Money Basics · Lesson 6 of 14
Read Common Market Terms in Plain English
Tickers, market cap, bid and ask, volume, gains and losses, long and short: the everyday vocabulary on every quote screen.
In this lesson
- Read a quote: ticker, bid, ask, spread and volume
- Explain why share price alone doesn’t tell you a company’s size
- Tell realized from unrealized results, and long from short positions
A ticker is the short symbol used to identify a listed security, such as SPY. Market capitalization is a company’s share price multiplied by its outstanding shares. A $10 stock isn’t automatically a smaller or cheaper business than a $100 stock; it may simply have more shares.
Reading a quote
- Bid — a price a buyer is currently offering.
- Ask — a price a seller is currently requesting.
- Bid-ask spread — the gap between them.
- Liquidity — how easily you can trade without substantially changing the price.
- Volume — the number of shares or contracts traded during a period.
- Volatility — how much prices fluctuate.
Example Consider this example
If the bid is $49.90 and the ask is $50.10, the spread is $0.20. Buying at the ask and immediately selling at the unchanged bid would lose $0.20 per share before fees.
A bullish view expects prices to rise. A bearish view expects prices to fall. Neither word tells you whether the view will be correct.
Gains, losses and returns
Realized
- Comes from a position you’ve closed
- The result is settled
Unrealized
- Belongs to a position you still hold
- It changes as the price moves
A drawdown is a decline from a previous peak. Yield describes income relative to a price or investment amount, while total return includes both price changes and income.
Long and short
Being long usually means owning an asset or contract. Short selling means selling borrowed shares that must later be returned. A short seller can lose more than the original proceeds if the stock rises, because there’s no fixed upper limit on a price.
Check your understanding
4 questions. Answer each one, then open “Show answer” to compare.
Question 1 of 4 The bid is $24.95 and the ask is $25.05. You buy 100 shares at the ask and immediately sell them at the unchanged bid. How much do you lose before fees?
dollarsShow answer
Answer: 10 dollars.
The spread is $0.10 per share, and 100 shares × $0.10 = $10. Wider spreads, common in less liquid securities, make this hidden cost bigger.
Show answer
Answer: B. A $6 unrealized gain per share
The gain is unrealized because you still hold the position. It becomes realized only when you sell, and it can shrink or grow before then.
Show answer
Answer: False.
Company size is market capitalization: share price × shares outstanding. A $10 stock with 10 billion shares is far larger than a $100 stock with 10 million shares.
Show answer
Answer: C. $1,500
To close, you must buy the shares back at $45: ($45 − $30) × 100 = $1,500. Until you do, the loss is unrealized but very real, and because a price can keep rising, it has no fixed upper limit.
Key takeaways
- Share price alone doesn’t tell you company size; market capitalization does.
- The bid-ask spread is a real cost every time you enter and exit.
- Unrealized results can change; realized results are settled when you close.
- A short position can lose more than its original proceeds.
Try it in StratosHedge
Add three tickers you know to a Watchlist and note each one’s price and day change. Free prices are delayed, so treat them as practice, not as execution quotes.
Read your first quotes Needs: Free account
Key terms
- Ticker
- The short symbol that identifies a listed security, such as SPY.
- Market capitalization
- Share price multiplied by shares outstanding: a measure of a company’s size that share price alone can’t give you.
- Bid
- The highest price a buyer is currently offering. If you sell with a market order, you usually get the bid.
- Ask (offer)
- The lowest price a seller is currently willing to accept. If you buy with a market order, you usually pay the ask.
- Bid-ask spread
- The gap between the bid and the ask. It’s a cost you pay every time you enter and exit a trade.
- Liquidity
- How easily you can trade without moving the price. Liquid markets have tight spreads and plenty of size at each price.
- Volume
- How many shares or contracts traded during a period. Rising volume shows more participation behind a move.
- Volatility
- How much and how fast a price moves. Realized (historical) volatility measures past moves; implied volatility is what option prices expect.
- Drawdown
- The drop from an account’s peak value to its later low, usually shown as a percentage.
- Total return
- An investment’s result including both price change and income such as dividends or interest.
- Short selling
- Borrowing shares and selling them, hoping to buy them back cheaper later. Losses can exceed what you put in because a price can keep rising.
- Realized vs unrealized
- A realized result comes from a position you’ve closed and is settled. An unrealized one belongs to a position you still hold and changes with price.
Sources and further reading
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Educational content, not investment advice. Lessons describe how markets and models tend to behave. They don’t tell anyone what to buy, sell or hold. Interactive examples use illustrative sample data, and simulator results are simulated — not actual trading. Options involve risk and are not suitable for all investors.
Risk disclosureCharacteristics and Risks of Standardized Options (OCC) (opens in a new tab)