Trading Glossary: Terms Explained Simply

Every term below is written for someone who is new to trading. Each one starts with the plain meaning, adds one concrete detail, and links to a longer guide or pattern page where there is one. Jump to a letter, or search the page with your browser.

A

Ask price

The ask (also called the offer) is the lowest price anyone is currently willing to sell at. Buy with a market order and you pay the ask, not the last traded price on the ticker.

Say gold shows a bid of $4,150.00 and an ask of $4,150.40 (hypothetical numbers). Buy one ounce at market and you pay $4,150.40. Sell it straight back and you receive $4,150.00, so you are down $0.40 before the price has moved at all. That gap is the spread.

See also: Bid price, Spread, Market order

B

Bear market

In a bear market, prices grind lower over months and pessimism spreads. The usual yardstick for stock indices is a 20% decline from a recent high. Crypto swings far more, so a 20% drop there can happen without anyone calling it a bear market.

Watch the recovery math. Hypothetical: an asset falls from $100 to $80, a 20% loss. Getting back to $100 needs a 25% gain from $80 ($20 / $80), and a 50% loss needs a 100% gain to recover. Bear markets also produce sharp rallies that fade, so one strong green week is not proof the decline is over. Traders who can go short have a way to act on falling prices.

Bid price

Sellers get the bid. It is the highest price any buyer is offering at this moment, and in a normal market it sits just below the ask.

This matters when you close a long position. Hypothetical: you bought an ETF at a $50.10 ask, and later the quote reads $50.30 bid, $50.35 ask. Your exit at market is $50.30, so the real gain is $0.20 a share, not the $0.25 you would get by reading the ask. For a short it flips: you open at the bid and close by buying at the ask. Both directions are covered in long vs short.

Bollinger Bands

Bollinger Bands wrap price in an envelope that adjusts to volatility. The middle line is usually a 20-period simple moving average. The upper and lower bands sit two standard deviations above and below it.

Hypothetical: the 20-period average is 50 and the standard deviation is 1.5. The bands are at 47 and 53 (50 minus 3, 50 plus 3). When price swings calm down, the bands pinch together, a "squeeze" that often comes before a bigger move, direction unknown. Touching the upper band does not mean price must fall. In a strong trend, price can ride along a band for many candles.

See also: Volatility, Moving average, Breakout

Breakout

A breakout happens when price escapes a level or range that had contained it. Traders care because a range that finally breaks can start a new trend.

The catch is the false breakout: price pokes above resistance, triggers eager buyers, then drops back inside. Two simple filters help. Wait for a candle to close beyond the level rather than reacting to a wick, and look for rising volume on the break. Hypothetical: gold ranges between $4,100 and $4,150 for a week, then a 1D candle closes at $4,168 on heavy volume. That is a breakout. A wick to $4,160 that closes at $4,145 is not.

Bull market

Bull market means prices have been rising for an extended period and most participants expect more of the same. For stock indices, a common rule of thumb is a gain of 20% or more from a recent low, though there is no official line.

Hypothetical: an index falls to 4,000, then climbs to 4,800. That is a 20% rise from the low (800 / 4,000), so many commentators would call it a new bull market. The ride is rarely smooth. A rising trend on the weekly chart can contain several 5% to 10% pullbacks that look alarming on the daily chart. The opposite phase is a bear market.

C

Candle body

The body is the part of the candle between the open and the close. Its size tells you how far price actually traveled by the end of the period, which is why traders read it as a rough gauge of conviction.

Say gold opens a 1D candle at $4,150 and closes at $4,130. The body is red and $20 tall. If the day's full range was $60, the body covers a third of it and the wicks hold the rest. A body that fills most of the range, like a bullish marubozu, shows one side in charge. A tiny body, as in a doji, shows a stalemate.

Candlestick

Each candlestick packs four prices from one period into a single shape: the open, the high, the low and the close. The thick part (the body) spans open to close. The thin lines above and below (the wicks) reach the high and the low. Green or hollow means it closed above the open; red or filled means it closed below.

Hypothetical 1H Bitcoin candle: open $60,000, high $60,400, low $59,700, close $60,250. That draws a green body $250 tall, an upper wick of $150 and a lower wick of $300. Our guide on how to read candlestick charts walks through the rest.

Commodity

Commodities are basic goods with standardized quality, so one ounce of gold or one barrel of a given oil grade is as good as any other. That sameness is what lets them trade on exchanges.

They are usually grouped into metals (gold, silver, copper), energy (crude oil, natural gas) and agriculture (wheat, coffee). Prices react to the physical world: a pipeline outage, a poor harvest, a shift in industrial demand. Most traders never handle the goods and use futures, ETFs or other price-tracking products instead. Gold is often treated as a haven when stocks fall, though that relationship does not hold every time. Oil can jump or slide several percent in a day on supply news, a textbook case of high volatility.

Continuation pattern

These patterns form when a trend stops to rest. Price moves sideways or drifts slightly against the trend, and the pattern is read as a sign the original move will resume. Many do. Plenty fail.

Classic chart versions are flags, pennants and triangles. On candles, an inside bar during a trend is a small-scale example: one candle's range sits entirely within the previous one. Hypothetical: Bitcoin rallies from $58,000 to $62,000, then chops between $61,000 and $62,000 for several hours. A close above $62,000 would complete the continuation. A close below $61,000 would suggest the pause is turning into a reversal instead. Direction of the break decides it, not the shape alone.

D

Drawdown

Drawdown measures how far your balance has fallen from its peak. If your account grows to $2,400 and then slides to $1,800, the drawdown is $600, or 25% from the peak.

The cruel part is recovery math. A loss takes a bigger percentage gain to repair:

down 10% needs about 11% to get back
down 25% needs about 33%
down 50% needs 100%

That is why most risk rules aim to keep drawdowns small rather than chase big wins. Small, consistent position sizes are the main control. Your maximum drawdown while practicing also shows how you handle a losing run, a big theme in trading psychology.

E

EMA (exponential moving average)

An EMA works like a moving average with a bias toward fresh data. It uses a multiplier of 2 divided by (N + 1). For a 9-period EMA that is 2/10, or 0.2.

Each update: new EMA = previous EMA + 0.2 x (close minus previous EMA). If the previous EMA was 100 and price closes at 110, the new EMA is 100 + 0.2 x 10 = 102. A 9-period simple average gives the newest close a weight of 1/9, about 0.11, which is why the EMA turns sooner. Traders often pair a fast and a slow EMA, like 9 and 21, and watch for crossovers. In Alphacent, EMA, RSI, MACD and Bollinger Bands are on the full-screen chart, which is a Pro feature.

ETF (exchange-traded fund)

An ETF, or exchange-traded fund, pools money into a basket of assets (the companies in an index, a set of bonds, or physical gold) and lists it as one ticker you can buy and sell during market hours.

The appeal is diversification in a single trade. Hypothetical: $500 in an S&P 500 tracker gives you a small slice of roughly 500 companies instead of $500 riding on one. Most ETFs charge a yearly expense ratio; at 0.10%, holding $1,000 costs about $1 a year. The price follows the holdings, so an index ETF moves roughly in line with its index. Leveraged and inverse ETFs also exist. They reset daily, so over longer holding periods they can drift far from a simple multiple of their index.

I

Index

An index sums up a slice of the market in one figure. The S&P 500 tracks roughly 500 large US companies, and the Nasdaq 100 follows another group. Most major indices are weighted by market capitalization, so the biggest companies move the number most. The Dow Jones Industrial Average is the famous exception: it is weighted by share price.

The index itself is just a calculation, so you trade something that follows it, such as an ETF or a futures contract. Hypothetical: the index closes at 5,000 and the next day at 5,050. That is a 1% gain (50 / 5,000), and a fund tracking it should rise by about the same, minus small costs.

Isolated margin

With isolated margin, the collateral for a position is fenced off. The most that trade can lose is the margin you assigned to it; the rest of your balance is untouched.

Hypothetical example: your account holds $2,000 and you open a 10x Ethereum long with $100 of isolated margin, a $1,000 position. If Ethereum drops about 10%, that $100 is gone and the position is liquidated. Your other $1,900 stays where it was.

The alternative, cross margin, lets every open position draw on the full balance. That can keep a trade alive longer but puts the whole account behind it. Beginners are usually better served by isolated margin because the worst case is known before you click. See leverage and margin.

L

Leverage

Leverage lets you open a bigger position than your cash alone would buy. At 5x, every $1 of your own money controls $5 of the market.

Hypothetical example: you put up $200 at 5x, so your position is worth $1,000. A 2% move in your favor makes $20, which is 10% on your $200. A 2% move against you costs the same 10%. The percentage move on your money is always the market move times the leverage.

Higher leverage also pulls your liquidation price closer. At 5x, a move of roughly 20% against you wipes out the margin; at 10x, roughly 10% does. The full mechanics are in leverage and margin.

Limit order

A limit order sets the worst price you will accept. A buy limit fills at your price or lower, a sell limit at your price or higher. If the market never gets there, nothing happens.

Hypothetical: silver trades at $30.50 and you place a buy limit at $30.00. If the price drops to $30.00, you can be filled there or better. If it turns at $30.10 and runs to $32, you miss the move entirely. That is the trade-off against a market order: price certainty in exchange for fill uncertainty. Many traders place buy limits near support, and a take-profit on a long works much like a sell limit above your entry.

Liquidation

Liquidation happens when a leveraged trade loses so much that your margin can no longer cover it. The platform closes the position automatically, whether or not you agree, and you usually lose most or all of that margin.

A rough rule: the liquidation distance is about 100% divided by your leverage. At 10x, a move of roughly 10% against you wipes out the margin. At 2x, it takes roughly 50%. Most platforms trigger it a little earlier because of fees and maintenance requirements.

The usual defense is a stop-loss placed well before that price. You take a smaller, planned loss instead of letting the platform take the whole stake. The mechanics are in leverage and margin.

Liquidity

A liquid market has plenty of buyers and sellers quoting prices close together, so you can trade a normal size instantly at a fair price. An illiquid one has few, and your own order can push the price against you.

The quickest tells are a tight spread and steady volume. Large index ETFs, gold and Bitcoin are generally very liquid. A small, obscure token might still show a price on screen, but try to sell $10,000 of it and you could knock that price down several percent on the way out. Liquidity also shifts by the hour: the same market can be deep in its main session and thin overnight.

Long position

Going long means buying an asset because you expect its price to rise. Your profit is the difference between where you sell and where you bought, multiplied by how much you hold.

Hypothetical example: you buy 10 units of silver at $30 and later sell at $33. That is $3 gained per unit, so $30 in total, a 10% return on the $300 you put in. If silver drops to $27 instead, you lose the same $30.

On an unleveraged long, the worst case is the asset going to zero, so you can lose what you paid and no more. For the mirror-image trade and when each one makes sense, see long vs short.

M

MACD

MACD tracks momentum by subtracting a slow EMA from a fast one. With standard settings, the MACD line is the 12-period EMA minus the 26-period EMA. A signal line (a 9-period EMA of the MACD line) sits on top, and the histogram shows the distance between the two.

Hypothetical: 12 EMA at 105, 26 EMA at 102. The MACD line is 3. If the signal line is 2, the histogram bar is 1. The MACD line crossing above the signal line is read as bullish momentum; crossing below, bearish. Because it is built from averages, MACD lags, and it throws off plenty of false crosses in sideways markets.

Margin

Margin is your own stake in a leveraged trade, the deposit that backs the borrowed part. It is not a fee. You get it back when you close, plus or minus whatever the trade made.

The math is simple: required margin equals position size divided by leverage. A $2,000 position at 10x needs $200 of margin. The same position at 4x needs $500.

When a trade moves against you, the losses come out of that margin first. If they eat through most of it, the platform closes the position for you, which is liquidation. The more leverage you use, the thinner that cushion is, as leverage and margin shows in detail.

Market capitalization

Market cap tells you how big a company is in the eyes of the stock market. Multiply the share price by the number of shares outstanding.

Hypothetical: a company has 200 million shares trading at $50. Its market cap is $10 billion (200 million x $50). Share price alone says nothing about size: a $500 stock with 10 million shares is worth $5 billion, half the value of that $50 stock. Companies are loosely sorted into large-cap, mid-cap and small-cap, and smaller caps tend to swing harder. Cap-weighted indices such as the S&P 500 give the largest companies the most influence. Crypto uses the term too: coin price times circulating supply.

Market order

Use a market order when getting filled matters more than the exact price. It executes right away against the best available quote: buys fill at the ask, sells at the bid.

The catch is that you do not choose the price. In a fast or thin market the fill can land away from what you saw on screen, which is called slippage. A made-up example: you tap buy while Bitcoin shows a $60,000 ask, a news spike hits, and you fill at $60,030. On one coin that is $30 you did not plan to pay. If a specific price matters more than speed, use a limit order.

Moving average

A simple moving average (SMA) adds up the last N closing prices and divides by N. Each new candle drops the oldest price and adds the newest, so the line "moves" along the chart.

Worked example with a 5-period SMA: closes of 10, 11, 12, 13 and 14 sum to 60, and 60 divided by 5 is 12. Price above a rising average suggests an uptrend; below a falling one suggests a downtrend. Common settings are 20, 50 and 200. The trade-off is lag: because it averages the past, it always turns after price does. The EMA reduces that lag by weighting recent candles more.

P

Paper trading

Paper trading means placing simulated trades with pretend money while prices move for real. The name comes from traders who once wrote their trades down on paper and tracked the results by hand.

It is a safe place to learn order types, build a stop-loss habit or find out how you react to a losing streak. Its blind spot is emotion. Losing virtual money rarely hurts the way real losses do, so a plan that feels easy on paper can feel very different with real money.

In Alphacent's simulator everyone starts with $2,000 in paper money at live market prices, across crypto, gold, indices and more. For how to get the most out of it, read what is paper trading.

Position size

Position size is the value of a trade: how many units you buy or sell, times the price. Experienced traders work it out backwards, starting from how much they are willing to lose.

The usual formula: position size equals the amount you will risk divided by the distance to your stop, as a fraction of the entry price. Hypothetical example: with $2,000 and a 1% risk rule you can lose $20. If your stop is 4% from entry, the position is $20 divided by 0.04, which is $500.

Widen the stop and the position shrinks; tighten it and the position grows, while the dollar risk stays at $20. The step-by-step method is in position sizing.

Profit and loss (P&L)

P&L is the running score of your trading. For a single trade, it is exit price minus entry price, times the quantity, with the sign flipped for a short (before any fees).

Hypothetical example: you buy 0.5 ETH at $3,000 and sell at $3,200. The P&L is $200 times 0.5, so $100. Short the same amount at $3,000 and buy back at $3,200 and the P&L is minus $100.

Platforms usually split it in two. Realized P&L is locked in from closed trades. Unrealized P&L is what your open positions would make or lose if you closed them right now. Only realized P&L is final. Percentages are handy for comparing trades of different sizes.

See also: Unrealized P&L, Drawdown, Win rate

Pullback

Pullbacks are the pauses inside a trend. In an uptrend, price dips; in a downtrend, it bounces. Many traders prefer entering on a pullback over chasing a candle that has already run.

Hypothetical: an index rises from 100 to 120, then slips to 112. The pullback is 8 points, or 40% of the 20-point move (8 divided by 20). If price then turns up and makes a new high above 120, the pullback is confirmed. The hard part is that a pullback and the start of a reversal look the same at first. A break below the prior swing low is the usual sign it was more than a dip.

R

Resistance

Rallies have stalled at this level before. Sellers turned price back there, often because earlier buyers were waiting to exit at breakeven or take profit.

Suppose Ethereum stalls near $3,500 twice in two weeks. That area acts as resistance until price closes clearly above it. After a clean break, the old ceiling often becomes the new floor. Traders call this role reversal, and it is a tendency, not a rule. Round numbers like $100 or $3,000 often act as resistance simply because many people place orders there. See the support and resistance guide for drawing it well.

Reversal pattern

Reversal patterns hint that a trend is running out of steam. Bullish ones appear after a decline, bearish ones after a rally. Without a prior trend there is nothing to reverse, so the same shape in a sideways market means little.

Common candlestick examples include the hammer, bearish engulfing and the evening star. On a larger scale, chart patterns like double tops and head and shoulders do the same job. Every one of them fails regularly, so read them as hints. Many traders wait for the next candle to confirm, and a pattern at a known support or resistance level carries more weight than one in open space.

Risk-reward ratio

This ratio compares the distance to your stop-loss with the distance to your target. Risking $20 to make $60 is 1:3.

It matters because it sets the win rate you need to break even, before costs: 1 divided by (1 plus the reward multiple). At 1:1 you need to win 50% of trades. At 1:2 you need about 33%. At 1:3, 25%.

A big ratio on paper means little if the target is unrealistic, so check it against the chart. A target that sits past strong resistance will rarely get hit. The ratio comes from where you place your stop-loss and take-profit.

RSI (relative strength index)

RSI measures how strongly price has been moving up versus down. The formula is RSI = 100 minus 100 / (1 + RS), where RS is the average gain divided by the average loss over the period (14 by default).

Hypothetical: average gain 2, average loss 1. RS is 2, so RSI = 100 minus 100/3, about 66.7. Readings above 70 are called overbought and below 30 oversold. Those labels mislead beginners. In a strong uptrend RSI can sit above 70 for weeks while price keeps climbing, so an overbought reading is not a sell signal by itself. Divergence, where price makes a new high and RSI does not, is often more useful.

S

Short selling

Short selling flips the usual order. You sell at today's price and buy back later, hoping the price has dropped in between. On a stock exchange this involves borrowing shares; on most trading apps and simulators you simply open a sell position.

Hypothetical example: you short Bitcoin at $60,000 with a $600 position. It falls 5% to $57,000 and you close, gaining $30. Had it risen 5%, you would have lost $30.

The risk is lopsided. A long can lose at most what you put in, but a price has no ceiling. If Bitcoin doubled to $120,000, that unleveraged $600 short would be down $600, and the loss keeps growing with the price. That is why a stop-loss matters even more on a short. More in long vs short.

Slippage

Slippage happens between the tap and the fill. You expect one price and the order executes at another, most often a worse one, because the market moved or there was not enough size available at your price.

Hypothetical: you sell 10 units expecting $45.00 and get an average of $44.92. That is $0.08 per unit, $0.80 in total. Trivial once, noticeable over hundreds of trades. It is worst around news, at market opens and in markets with low liquidity. Stop-losses are exposed too: if price gaps, a stop at $95 can fill at $93. Size your risk per trade with that possibility in mind, as covered in position sizing.

Spread

Spread is the difference between the ask and the bid. You buy at the ask and sell at the bid, so the spread is the toll for every round trip.

Hypothetical: bid $99.95, ask $100.05. The spread is $0.10, about 0.1% of the price, and the market has to move $0.10 your way before the trade is back to even. Busy markets usually have tight spreads. Thin markets, overnight sessions and fast news moments widen them. On a 1m chart with a $0.20 profit target, that same $0.10 spread takes half the planned gain before anything else goes wrong.

See also: Liquidity, Slippage, Ask price

Stop-loss

You set a stop-loss when you open a trade, at the price where your idea is clearly wrong. If the market reaches it, the position closes without you having to watch the screen.

Hypothetical example: you buy gold at $4,100 an ounce with a stop at $4,018. That is an $82 or 2% drop from entry. On a $1,000 position, the stop caps your planned loss at about $20.

In fast markets the fill can be worse than the stop price because of slippage. A stop limits the damage in most cases, but it cannot promise an exact exit. On a long, stops usually sit just under a level that matters, such as support. More in stop-loss and take-profit.

Support

Support is a floor that has held before. When price falls to it, buyers have tended to step in, so traders watch it for a bounce or a break.

Think of it as a zone, not a razor-thin line. If silver dropped to around $28.00 three times in a month and bounced each time, $27.80 to $28.20 is a support area. Each extra touch makes the level more obvious to other traders. It does not make it unbreakable. Once support gives way, it often flips and acts as resistance on the way back up. Many traders place a stop-loss just below it. Our support and resistance guide shows how to draw it.

T

Take-profit

Take-profit is the other half of a stop-loss: a preset exit on the winning side. When the price touches your target, the position closes and the gain is locked in.

Hypothetical example: you go long Bitcoin at $60,000 with a stop at $58,800 (2% below) and a take-profit at $62,400 (4% above). You have planned to risk 2% to make 4%, a 1:2 risk-reward ratio.

Deciding the exit in advance stops you from grabbing a small gain out of nerves or holding too long out of greed. On a long, targets often sit just below the next resistance level. See stop-loss and take-profit.

Timeframe

Pick 1H and every candle covers one hour. Pick 1D and each covers a full day. One 1H candle contains the same price action as sixty 1m candles, just compressed into one shape.

The same market can look like it is rising on the 1D chart and falling on the 15m chart, and both are true. Short timeframes show more noise and more signals; longer ones move slower and tend to carry more weight. Many traders check a higher timeframe for direction, then drop to a lower one to time an entry. Patterns and support levels on a 1W chart generally matter more than the same shape on a 1m chart.

Trend

Price rarely moves in a straight line, so traders define direction by swings. An uptrend makes higher highs and higher lows. A downtrend makes lower highs and lower lows. When the swings do neither, price is in a range.

Hypothetical swings on a 4H chart: a high at 100, a low at 94, a high at 108, a low at 101, a high at 115. Highs rise (100, 108, 115) and lows rise (94, 101), so it is an uptrend until a low breaks. The old saying "the trend is your friend" survives because trading against a clear trend means betting it ends now. Sometimes it does, but a move looking stretched is not a reason on its own. A moving average is a common way to smooth the picture.

U

Unrealized P&L

Unrealized P&L, sometimes called paper profit or loss, is what an open position is up or down compared with your entry. It becomes realized only when you close the trade.

Hypothetical example: you hold a $1,000 long on the S&P 500. The index rises 3%, so your screen shows +$30 unrealized. If it then slips to 1% below your entry before you close, the same screen shows minus $10.

Beginners often treat a green unrealized number as money already earned and then watch it disappear. It is not yours until you exit. A take-profit order is one way to turn it into realized profit and loss at a level you chose in advance.

V

Volatility

Volatility measures the size of price swings, not their direction. A market that moves 5% on a typical day is more volatile than one that moves 0.5%, whether it is rising or falling.

It changes how big a position you can take. Say you have a $2,000 account and risk 1% ($20) per trade: a stop $2 away lets you hold 10 units. If volatility doubles and you need a $4 stop to avoid being shaken out by noise, the same $20 risk buys only 5 units. Crypto is typically more volatile than a broad stock index, and Bollinger Bands widen visibly when volatility rises. The full sizing math is in position sizing.

Volume

Volume counts the shares, coins or contracts traded during a period, such as one candle on your chart. Each volume bar sits directly under the candlestick it belongs to.

Traders read it as a gauge of conviction. A breakout above resistance on well above average volume suggests real participation; the same move on thin volume is easier to doubt. Hypothetical: a stock averages 1 million shares a day and trades 3 million on the breakout day, so volume is 3x normal. On its own, volume does not tell you where price goes next. Heavy volume on a red day can mean panic selling or a final washout low, and often you only know which in hindsight.

W

Wick (shadow)

Wicks, also called shadows, show where price went during the period but could not stay. The upper wick runs from the top of the body to the high; the lower wick runs from the bottom of the body to the low.

Measure it like this: upper wick = high minus the higher of open and close. If a candle opens at $100, closes at $104 and hits $110, the upper wick is $6. A long wick marks prices the market tested and rejected. A hammer has a lower wick at least twice the body, showing sellers pushed down and buyers pushed back. A shooting star is the mirror image at the top.

Win rate

Divide your winning trades by your total closed trades and you have your win rate. Twelve winners out of 30 trades is a 40% win rate.

On its own it says little. A trader who wins 40% of the time can be profitable if the average winner is much bigger than the average loser, and a trader who wins 80% of the time can still lose money if a few large losses wipe out many small gains.

Read it next to the risk-reward ratio. At 1:2, a 40% win rate is ahead before costs: 12 wins at $40 is $480, against 18 losses at $20, or $360. Chasing a high win rate tempts traders to bank small wins fast and let losers run, a habit covered in trading psychology.

Trading glossary

A