A collar is a hedge on stock you already own. You buy an out-of-the-money put to set a floor under the position, and you sell an out-of-the-money call to help pay for that put. The put provides the floor and the call the ceiling, so your loss and your gain are both limited for the life of the options. The price of that certainty is that you give up the big upside moves.
This guide walks through the mechanics, a worked example with real arithmetic, how a collar differs from a protective put and from a stop-loss order, and the risks that catch people out near expiration.
TL;DR
- A collar = long 100 shares + long put (floor) + short call (ceiling). The call premium offsets some or all of the put's cost.
- Max gain is the call strike minus your purchase price. Max loss is your purchase price minus the put strike. Both are adjusted by any net debit or credit.
- A protective put keeps unlimited upside but costs full premium. A collar is cheaper, but caps your gains.
- Watch assignment: if the stock finishes above the call strike, your shares will likely be called away.
- Use it when you want to hold through a specific risk window, such as earnings or a volatile quarter, not as a permanent default.
Table of Contents
- What a collar does in options
- Collar example with real numbers
- Protective put vs. collar
- Collar vs. a stop-loss order
- How to build a collar, step by step
- Risks and what changes along the way
- When a collar makes sense
- Our perspective
- Get the setup before the open
- FAQ
- Sources
What a collar does in options
The collar combines three positions on the same underlying stock:
- Long stock, typically 100 shares per contract set.
- A long put, usually below the current price. It lets you sell your shares at the strike price no matter how far the stock falls.
- A short (written) call, usually above the current price. It obligates you to sell your shares at that strike if the buyer exercises.
Per the Options Industry Council, the short-call premium helps pay for the put. Some traders pick strikes so the two premiums roughly cancel, which is often called a zero-cost collar. That label is a little misleading: you still pay with the upside you gave away.
Think of it as a trade-off between protection and cost. A collar hedges a long stock position against a possible near-term decline, and you decide how much of the upside to surrender to buy that protection.
Collar example with real numbers
The cleanest example comes from Fidelity's options guide. You own 100 shares at $100, sell a $105 call for $1.80 and buy a $95 put for $1.60. That is a net credit of $0.20 per share.
| Item | Per share | Per 100 shares |
|---|---|---|
| Stock purchase price | $100.00 | $10,000 |
| Call sold ($105 strike) | +$1.80 | +$180 |
| Put bought ($95 strike) | -$1.60 | -$160 |
| Net credit | +$0.20 | +$20 |
| Maximum profit | $5.20 | $520 |
| Maximum risk | $4.80 | $480 |
The same source puts maximum profit at $5.20 and maximum risk at $4.80. You can reproduce those numbers yourself with the formulas below.
The formulas
According to the Options Industry Council:
- Maximum gain = call strike minus stock purchase price, less any net debit or plus any net credit.
- Maximum loss = stock purchase price minus put strike, less any net debit or plus any net credit.
- Breakeven at expiration is, in principle, the initial stock level adjusted by the debit or credit.
These are all stated on the Options Industry Council's collar page. Run the example: $105 minus $100 is $5, plus the $0.20 credit is $5.20. The downside is $100 minus $95, which is $5, minus the $0.20 credit, which is $4.80. With a credit, your breakeven sits $0.20 below your purchase price, at $99.80.
What happens at expiration
| Stock at expiration | Result |
|---|---|
| Above $105 | Call is likely assigned. You sell at $105 and keep the $5.20 maximum. |
| Between $95 and $105 | Both options expire worthless. You keep the shares and the $0.20 credit. |
| Below $95 | You can exercise the put and sell at $95. Your loss is capped at $4.80. |
If the stock is above the call strike at expiration, you will likely be assigned and sell the stock at that strike. If that outcome would be a problem, for tax or personal reasons, choose a higher call strike before you open the trade.
Protective put vs. collar
A protective put (also called a married put) is the simpler cousin. You own the stock and buy a put, and nothing else. If the stock drops below the strike, you can exercise the put to sell at the strike price, which is your minimum exit price.
The Options Industry Council puts the cost of protection this way: maximum loss is the stock purchase price minus the put strike plus the premium paid. Here is a hypothetical illustration of our own, using that formula:
- You buy 100 shares at $100 and a $95 put for $2.00.
- Maximum loss: $100 minus $95 plus $2.00 = $7.00 per share, or $700.
- Breakeven at expiration: $102.00.
- Upside: unlimited, less the $2.00 you paid.
Now compare the collar above: maximum risk of $4.80 instead of $7.00, but gains stop at $105.
The same source offers a useful framing: a protective put is like homeowner's insurance. You would rather the stock do well than need the claim.
| Protective put | Collar | |
|---|---|---|
| Legs | Stock + long put | Stock + long put + short call |
| Upfront cost | Full put premium | Reduced, zero or a small credit |
| Upside | Unlimited, minus premium | Capped at the call strike |
| Downside | Floor at the put strike, minus premium | Floor at the put strike, adjusted by net debit or credit |
| Assignment risk | None on the put you own | Short call can be assigned |
| Best for | Bullish holders who want insurance | Holders who accept a cap in exchange for cheaper insurance |
If you want to understand the short-call side in more depth, our guide to covered call strategy types covers how that leg behaves on its own. For a refresher on the building blocks, see what an options contract is.
Collar vs. a stop-loss order
Many stockholders manage risk with a stop order instead. The two are not the same tool.
A stop order turns into a market order once the stop price is reached, so the price you actually get can differ from your stop. If a stock gaps down overnight on earnings, your fill can land well below the level you picked. A put's strike is a contractual floor: you can sell at that strike regardless of where the stock opens.

The collar also has costs a stop does not. A stop is free to place, while a collar needs option premium, margin-free but contract-bound capital, and attention to expiration. The put also expires: a stop can sit on a position indefinitely, while a collar protects only until the options end.
For busy people, that difference matters. If you hold a position while you are on a job site, in meetings or in the operating room, a defined floor does not depend on you being at the screen when news hits.
How to build a collar, step by step
- Start with the shares. You need at least 100 of a stock with listed options. Many traders prefer a position they would be content to sell at the call strike.
- Choose your window. Pick an expiration that covers the risk you are hedging, for example an earnings report or a stretch of macro uncertainty. Shorter terms mean less premium on both legs and more frequent decisions.
- Set the floor. A put closer to the stock price protects more and costs more. A put further out costs less but lets more loss through. Compare the put's strike to your own pain threshold in dollars, not percentages.
- Set the ceiling. A call closer to the stock price pays you more premium but caps gains sooner. Ask what price you would happily sell at.
- Check the net. Add the premiums. If the result is a small debit, a zero or a small credit, the structure is working as designed. Also read the options premium breakdown so you know what you are paying for.
- Enter as one order. Most brokers let you submit a collar or a married put plus a call as a multi-leg ticket, which avoids filling one leg and not the other. Confirm your account has the options approval level the strategy needs.
- Set a calendar reminder for roughly a week before expiration to decide whether to hold, roll or close.
Risks and what changes along the way
Assignment
The short call is the leg that can surprise you. According to Schwab, a covered call may be assigned early, and carrying collar options into expiration can bring unanticipated exercise or assignment. Dividend dates are a classic trigger, so read our checklist on avoiding assignment on ex-dividend options and the broader options assignment guide.
The SEC's investor education arm also notes that options writers may face greater risks than holders because certain contracts can carry unlimited potential loss. In a collar, the call is covered by your shares, which is why the structure is far more contained than a naked call. Still, the risk is that you are forced to sell shares you wanted to keep.
Volatility and time
Volatility affects the cost of both legs. Schwab observes that rising implied volatility can make the put more costly. The Options Industry Council adds that because you buy one option and sell another, implied-volatility effects may largely offset and usually are not a major consideration, and that strike choice drives the hedge's cost and protection. In practice, volatility matters most when you are shopping for strikes: the same net price buys a tighter or looser collar depending on the market's mood.
Exercise near expiration
Expiration week is when mistakes happen. FINRA warns that for physically settled options, a brokerage firm may liquidate an in-the-money position before the close if you lack the funds or shares for exercise. FINRA's example is about 0DTE strategies, but the principle applies to any in-the-money option you hold into the last session. Close or roll before then unless you truly want exercise.
Opportunity cost
The biggest cost is the one you never see on a statement: a stock that runs well past your call strike. You are capped. If you expect a breakout, a collar is the wrong tool. A protective put, or no hedge at all, is a better fit.
Taxes
Tax treatment of collars depends on your holding period, the strikes and your situation, and some tight collars can be treated differently from ordinary hedges. Talk to a CPA before collaring a large or long-held position.
When a collar makes sense
Collars fit a narrow set of situations:
- You have a gain you want to protect but do not want to sell yet.
- A known event is coming, like earnings, a regulatory ruling or a product launch.
- A large share of your net worth sits in one stock. Business owners and professionals with employer stock often face this.
- You cannot watch the market during the day and want a floor in place before you step away.
They fit poorly when you are strongly bullish, when option spreads are wide (thinly traded stocks), or when you would be unhappy to sell at the call strike.
If you are comparing hedging approaches, you can also test how a given protection scheme would have performed. Before trusting any backtest, it helps to know the hedging backtesting data checks that separate real results from flattering ones.
Our perspective
Most retail traders meet the collar as a safety strategy and treat it as set-and-forget. We see it differently. A collar is a decision you make twice: once when you choose the floor and ceiling, and again as expiration approaches. The first decision is about price levels. The second is about whether the reason you opened the hedge still exists.

The traders we build for are professionals, tradespeople and business owners with a day job. They do not have hours to stare at a chain. What helps them is a clear read on the setup before the open: the catalyst, the levels, the bear case. That is why our daily briefings pair each idea with entry and exit levels and an explicit bear case, and why we think a hedge should start from the question "what would make this wrong?" rather than from the strategy name.
Use a collar when you know what you are protecting and from what. If you cannot say it in one sentence, wait.
— Customer
Get the setup before the open
If you hold stock and are weighing a hedge, you need to see the real levels and catalysts first. Morningoptions delivers free daily briefings with ranked, specific contract ideas. The Pro plan is $89 per month or $742 per year and adds the lunchtime scanner and an AI chat scanner for researching a ticker on demand, so you can check a stock's options chain and upcoming catalysts before you build a collar.
For related reading, see our guide to low-risk options trades for retail investors and single-leg options strategies.
FAQ
What does a collar do in options?
It brackets the value of stock you own. The long put sets a minimum sale price and the short call sets a maximum. Your result stays between those two levels, adjusted by the net premium, until the options expire.
Is a zero-cost collar really free?
Not in the way the name suggests. The call premium you receive equals the put premium you pay, so no cash leaves your account. You pay by giving up gains above the call strike, and you accept the risk of assignment.
Is a protective put better than a collar?
It depends on your outlook. A protective put keeps unlimited upside, but you pay the full premium. A collar costs less, but caps your gain. If you are bullish and willing to pay for insurance, the put fits. If you mainly want to hold through a risky stretch cheaply, the collar fits.
Is a protective put better than a stop loss?
They solve different problems. A stop order becomes a market order when triggered, so a gap can fill you below your stop. A put guarantees the strike as your sale price until expiration, but it costs premium and expires.
Can I lose money on a collar?
Yes. Your loss is limited to the stock purchase price minus the put strike, adjusted by any net debit or credit, but that is still real money. You can also lose out if the stock rallies past your call strike.
Sources
- Collar Protective Collar, Options Industry Council
- Protective Put (Married Put), Options Industry Council
- What Is A Collar Position? Fidelity
- What Are Options Collars? Charles Schwab
- An Introduction to Options, Investor Bulletin, Investor.gov
- Stop Order, Investor.gov glossary
- Zeroing In on an Options Trading Strategy: 0DTE, FINRA
- Hedging backtesting data checks, BacktestMarket
