Puts in 3 Minutes

A put option = the right to sell a stock at a specific price. You buy puts when you think the stock is going down, or when you want to protect shares you already own.

The Setup

Stock at $100. You buy a $100 put for $3.00. You pay $300. Expiration is 30 days out.

Three Outcomes

Stock drops to $88: Your put lets you sell at $100. Stock is only worth $88. That right to sell at $100 is worth $12. Minus the $3 you paid = $9 profit per share. $900 on a $300 bet.

Stock stays at $100: Selling at $100 when the stock is at $100 gets you nothing. Option expires worthless. You lose $300.

Stock goes to $115: Why would you sell at $100 when it's worth $115? You wouldn't. Option expires worthless. You lose $300.

Breakeven

Stock needs to be below $97 at expiration. That's the strike ($100) minus the premium ($3).

Puts as Insurance

This is where puts shine. You own 100 shares of a stock at $100 — that's $10,000 in exposure. You buy a $95 put for $1.50 ($150).

If the stock crashes to $80, your shares lose $2,000. But your put gains $1,500 ($95 - $80 = $15, minus $1.50 premium). Net loss: $500 instead of $2,000. The put saved you $1,500.

If the stock goes up, you lose the $150 premium. That's the cost of insurance.

Professional money managers do this constantly. It's why the market for puts is enormous — institutions buy billions in puts to protect portfolios.

Puts vs. Short Selling

Short selling has unlimited risk — if the stock doubles, you lose 100% and more. Buying a put has defined risk — the most you lose is the premium. For bearish bets, puts are almost always the smarter choice for beginners.

One Key Tip

If you're buying puts for protection (hedging), you don't need an ATM put. A $90 put on a $100 stock is much cheaper and still protects against a big crash. You're not trying to profit from a small dip — you're protecting against disaster. Cheap, OTM puts work well for that.