Hedging with Puts and Collars

What it is

A protective-put is a long put bought against shares you own; it sets a floor under the position for the life of the put. A collar finances that put by selling a call above the market, giving up upside beyond the call strike in exchange for a cheaper or free floor. Both are hedges: they do not add return, they reshape the distribution of outcomes. This article explains how to size and structure them, what they cost over time, and the uncomfortable truth that for most retail portfolios, selling some of the position is a cheaper hedge than buying puts.

The logic

A put is insurance, and insurance is priced to be profitable for the insurer on average. Buying puts continuously on an equity index has historically cost several percent a year in premium and paid out in crashes; over most multi-year periods the net effect has been negative. A collar reduces the cost by selling the upside that the option market prices generously (calls are cheap relative to puts because of skew, so a collar usually gives up more upside than it seems). Hedging therefore makes sense in specific situations: a concentrated position that cannot be sold (tax, lock-up, employment), a known event window, or a portfolio where the investor's real constraint is the maximum drawdown rather than the expected return.

The other side is the option seller collecting the volatility risk premium described in the-wheel-strategy and credit-spread-program. When you hedge, you are their customer.

Setup rules

Market: the stock, ETF or index option that most closely tracks the position being hedged. For a diversified portfolio, index puts are cheaper and more liquid than puts on each holding, at the cost of basis risk.
Timeframe: 3 to 12 months for a protective put; buying very short-dated puts repeatedly is the most expensive way to hedge. Collars are often set 6 to 12 months out.
Put strike: 5 to 15 percent below the current price. A put at the money is expensive and mostly a bet on volatility; a put 20 percent down is cheap but leaves a large uncovered loss.
Collar call strike: chosen so the call premium covers most or all of the put premium; typically 8 to 15 percent above the market for a 12-month collar. Write down the upside you are giving up as a number.
When to hedge instead of sell: the position cannot be reduced for external reasons, or the hedge is for a defined window. Otherwise, compare the put's annualised cost with the expected return of the fraction of the position you could sell instead.
IV condition: buy puts when iv-rank is low if you can choose the timing; a put bought at IV rank 80 is paying crisis prices.

Entry, stop, target

A hedge has no stop or target of its own. It is entered once, held for the period, and either expires (if the market was fine), is exercised or sold (if the market fell), or is rolled. The table shows a 12-month collar on a concentrated position.

Item	Value	Notes
Stock position	1,000 shares at 100.00 ($100,000)	Cannot be sold for tax reasons
Buy	10 puts, 90 strike, 12 months	4.50 each, $4,500 total
Sell	10 calls, 115 strike, 12 months	4.20 each, $4,200 received
Net cost	$300	Near zero-cost collar
Floor	$90,000 (minus $300)	Maximum loss 10.3 percent
Cap	$115,000 (minus $300)	Maximum gain 14.7 percent
Give-up	All upside above 115 for 12 months	The real price of the collar

The put-only version costs $4,500 (4.5 percent of the position) for a 12-month floor at 90; that is the annual "premium" and it is paid whether or not the market falls.

Position sizing and risk

Size the hedge to the portion of the position you actually need to protect, not to the whole position by reflex; a half-hedge at a lower cost is often the better trade-off. The framework at /learn/risk-management explains hedges as a substitute for position reduction, and /tools/position-size can compute the equivalent reduction: a 10 percent floor on 100 percent of a position is roughly equivalent, in maximum loss terms, to holding 90 percent of it unhedged for a small decline, and the comparison changes for large declines. Hedges on margin, or hedges funded by selling calls on a stock you are not willing to lose, are not hedges.

What breaks it

Cost drag. Continuous put buying is the single most reliable way to underperform over a decade. Hedge for reasons, not for comfort.
Basis risk. Index puts do not protect a portfolio that falls for its own reasons; single-stock puts are expensive.
Collar upside give-up. In a strong year the stock is called away at plus 15 percent while the index rises 25 percent, and the collar has cost 10 percent of return, invisibly.
Timing. Hedges bought after the selloff, at high IV, cost the most and protect the least; that is when most hedges are bought.
Roll management. Rolling a collar every year means giving up the upside every year; over long periods a collared position tends to compound well below the stock.
Early assignment on the short call around dividends, which removes the stock and leaves a naked long put.

How to test it

Simulate a continuously rolled 10 percent out-of-the-money 12-month put on an equity index over 30 or more years with historical implied volatility, and report the annual cost, the total return versus unhedged, and the drawdown reduction in the worst 3 bear markets. Then do the same for a collar. Then compare both with simply holding 80 percent of the position and 20 percent in treasuries. The last comparison is the honest benchmark, and it usually wins on return with a similar drawdown. For a concentrated position that cannot be sold, the calculus is different and the collar often earns its place; model your own numbers.

Variations

Put spread hedge: buy a 10 percent OTM put, sell a 25 percent OTM put; cheaper, and uncovered below the lower strike.
Rolling short-dated puts for a defined event window only; see news-event-trading-process.
Trend-based de-risking as a substitute for options; see trend-following-200-day.