What Is a Protective Put? The Stock Fell to $80 — Why You Only Lost $800

Insurance for Your Shares

You own a stock that has run up nicely — and one worry keeps nagging: what if it suddenly collapses? Is there a way to keep holding, keep the upside, and still lock the door on a crash?

There is. Buy one put option against the shares you own — an insurance policy for your stock. If it keeps rising, you keep earning; if it truly falls, someone is contractually obligated to take it off your hands at the agreed price. This is the protective put — the standard institutional hedge against downside risk.

What It Actually Is

One sentence: hold the stock, and buy a put on that same stock. The put grants you the right to sell your shares at the strike price any time before expiration.

It works exactly like an insurance policy: no matter how ugly the fall, you can always exit at the strike — a hard floor under your position. The premium you pay is your insurance cost; what it buys is the certainty that the floor cannot break.

How the Protection Kicks In

The floor is the whole story: once the stock falls below the strike, every dollar the stock loses, the put gains a dollar — a one-for-one offset.

Your maximum loss is therefore locked: purchase price − strike + premium. Anything below that is no longer your problem. Upside stays fully open, dragged only slightly by the premium.

Draw the payoff and you get a solid floor on the downside with the upside wide open. That is the charm of the protective put: downside protected, upside uncapped.

The Example: Down to $80, Yet Only $800 Lost

You hold 100 shares at $100 (your cost basis too). You buy one 30-day put struck at $95 for a $3.00 premium — $300 total. Your floor: 95 − 3 = $92.

Scenario one: the stock crashes to $80. The shares lose $2,000; the put earns (95 − 80 − 3) × 100 = $1,200. Net loss: $800 instead of $2,000 — the insurance paid out.

Scenario two: the stock rallies to $120. Shares gain $2,000, minus the $300 premium: net +$1,700. The upside was barely touched; you paid $300 for peace of mind the whole way up.

Insurance Is Never Free

If the stock never breaks the strike, the policy expires worthless and the $300 is gone — like a year of car insurance with no claim.

Worse, buying protective puts habitually stacks premium upon premium and visibly erodes long-term returns. This is not a set-and-forget, always-on tool.

Its best moments: locking in a large unrealized gain, or sleeping soundly through a major event. In one line — spend the insurance where it counts.

Choosing the Strike: How Big a Deductible?

A near-the-money put sets a high floor and strong protection — at a high premium. An out-of-the-money put is cheap — but you absorb the first leg of the drop yourself before coverage starts.

It is exactly like a car-insurance deductible: the lower the deductible, the pricier the policy. There is no optimal answer, only a trade-off. A common approach: pick the price you are absolutely unwilling to fall below, and make that the strike.

Why Not Just a Stop-Loss Order?

A stop-loss sells at market once triggered — a gap-down can fill you far below your stop, and a single wick can shake you out right before the stock recovers.

A protective put is a contractual floor: even after an overnight blow-up and a massive gap, your right to sell at the strike stands. The cost is the premium a stop-loss never charges.

The verdict: for everyday chop, a stop-loss is fine; for black swans and gap risk, the protective put takes the field. Pre-earnings profit locks, hedging a core long, deep-uncertainty regimes — that is its home turf.