Glossary term
Buy to Cover
Buy to cover means buying shares or another security to close an existing short position.
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What Is Buy to Cover?
Buy to cover means buying a security to close an existing short position. It is the closing transaction for a short sale, just as selling is the closing transaction for many long positions.
In a short sale, the trader sells borrowed shares first, hoping to buy them back later at a lower price. The buy-to-cover order repurchases the shares so they can be returned to the lender and the short position can be closed.
Key Takeaways
- Buy to cover closes a short position.
- The trader buys back shares that were previously sold short.
- A short seller profits if the cover price is below the short-sale price, before costs.
- Losses can grow if the stock price rises instead of falls.
- Short selling involves margin, borrowing, recall, and regulatory risks.
How Buy to Cover Works
Suppose a trader shorts 100 shares at $50. If the stock falls to $40 and the trader buys to cover, the gross gain is $10 per share before commissions, borrowing costs, margin interest, taxes, and other expenses.
If the stock rises to $65 and the trader buys to cover, the gross loss is $15 per share before costs. Because a stock can rise far above the short-sale price, short positions can create large losses.
Short Sale Timeline
Step | Action | What it means |
|---|---|---|
1 | Borrow shares | Shares are located or borrowed through the broker |
2 | Sell short | The borrowed shares are sold in the market |
3 | Hold short position | The trader has exposure if the price rises or falls |
4 | Buy to cover | Shares are bought back to close the short |
5 | Return shares | The borrowed shares are delivered back to the lender |
Why It Matters
Buy-to-cover orders can affect market behavior, especially when many short sellers try to close positions at the same time. Heavy covering can add buying pressure and may contribute to a short squeeze.
For individual traders, the order type matters because buying to cover is not a new bullish purchase. It is the act of closing a bearish position.
Limits and Misunderstandings
Buying to cover does not guarantee a profit. The result depends on the original short-sale price, the cover price, timing, borrowing costs, and margin requirements.
Short sellers may also be forced to cover if margin requirements are not met, shares are recalled, borrowing costs rise, or risk limits are breached.
The Bottom Line
Buy to cover is the closing step in a short sale. It repurchases shares to close the short position, locking in a gain or loss based on the price difference and related costs.