Unrealized vs Realized P&L
Your profit and loss (P&L) falls into two categories depending on whether you have closed the trade or are still holding it.
Unrealized P&L (paper gains/losses)
- The profit or loss on positions you currently hold
- Changes every time the stock price moves
- Not taxable until you sell
- Also called "paper gains" or "paper losses" because they only exist on paper until you close the trade
Realized P&L
- The profit or loss on positions you have closed (sold)
- Locked in permanently once the trade is closed
- This is what you pay taxes on (capital gains) or deduct (capital losses)
- This is what matters for your actual trading performance
Example
You buy 100 shares of TSLA at $200. It rises to $220. You have $2,000 in unrealized profit. If you sell, that becomes $2,000 in realized profit. If TSLA drops back to $200 before you sell, your unrealized profit goes to $0. You made nothing.
Why this matters
- Unrealized gains are not real until you sell: watching a winner turn into a loser because you did not take profits is one of the most common mistakes in trading
- Tax planning: you can control when you realize gains and losses. Selling losers before year-end to offset gains is called tax loss harvesting
- Performance tracking: your trading journal should track realized P&L, not unrealized. Open positions are still in play
"You never go broke taking a profit" is about converting unrealized gains into realized gains. An unrealized gain can disappear. A realized gain is in your account.