The Collar Strategy: How to Protect Concentrated Stock Without Selling It

A familiar situation: an engineer or executive who joined early now holds 60–80% of their liquid net worth in one stock, bought at a basis of a few dollars. Selling it would trigger up to 23.8% in federal tax on almost the whole value, plus state tax — 13.3% at the top California rate. Not selling means one earnings miss can take 30% off the family balance sheet in a day. The collar exists for exactly this gap between “can’t sell yet” and “can’t afford to lose it.” If calls and puts are new to you, start with options basics for tech investors, then come back.

What is a collar strategy?

A collar is a three-part position: 100 shares of stock you own, one put you buy below the current price, and one call you sell above it, both on the same expiry. The put gives you the right to sell at its strike, so it sets the floor. The call obliges you to sell at its strike if the stock finishes above it, so it sets the ceiling. The premium you collect for the call pays for some or all of the put.

Each listed equity option covers 100 shares, so a holder of 20,000 shares collars the whole position with 200 puts and 200 calls. Between the two strikes, the position behaves like the stock alone: every dollar up or down is yours. Outside them, the options take over.

Think of it as trading the tails of your distribution. You give away the best outcomes — the quarter where the stock rips 40% — in exchange for removing the worst ones. For a position that already made you wealthy, that is usually the right trade. The asymmetry that matters is personal, not statistical: a 40% gain on the concentrated position changes little about your life, while a 40% loss can change a lot.

How does a collar work at expiry?

At expiry, a collar pays off in three zones: below the put strike your loss stops, between the strikes you ride the stock, and above the call strike your gain stops. Chart 1 shows a $100 stock collared with a 90 put and a 115 call for 90 days.

Read it left to right. If the stock falls to $70, the unhedged holder is down $30 a share; the collared holder is down about $10, because the put lets them sell at $90. If the stock finishes at $105, both are up about $5. If it rallies to $135, the unhedged holder is up $35, while the collared holder is capped at about $15, because the shares get called away at $115 unless the call is bought back first.

Before expiry the picture is softer. The collar’s value moves less than the stock’s because the put gains as the stock falls and the short call loses value as it falls. In Greeks terms, the collar cuts your delta, so the position might move only 40–60 cents per dollar of stock move while the options have time left.

What does a collar cost?

A collar costs the put premium minus the call premium, plus whatever upside you surrender above the call strike. The cash part is usually small by design; the opportunity cost is the real price, and you should size it honestly.

Chart 2 shows why nearly everyone who hedges a large position ends up with a collar rather than a bare put. Three months of protection 10% below spot costs about 1.8% of the position on its own — roughly 7% a year if you keep rolling it. That is a large drag on a stock whose expected return might be 8–10%. Selling a 115 call covers nearly all of it.

Three things move the price you actually get:

• Implied volatility. Higher volatility makes both legs dearer, but it makes the call you sell more valuable too, so zero-cost collars get wider in volatile names: you keep more upside for the same floor. Our implied volatility guide explains how to read it.
• Skew. In most stocks, downside puts trade at higher implied volatility than upside calls. Real zero-cost collars therefore usually need a call closer to the money than Black–Scholes suggests — often 110–112 rather than 115 for a 90 put.
• Dividends and rates. A dividend-paying stock has cheaper calls and dearer puts, which tightens the zero-cost band.

Should you collar, sell, or use an exchange fund?

For most concentrated holders the practical choice is between a collar and a staged sale, often both together. Exchange funds and prepaid variable forwards solve different problems and suit larger positions with longer horizons.

Selling is the only option that removes the risk permanently, and for a low-basis position the tax is the whole problem. A collar doesn’t remove the tax; it defers the decision. That is valuable when:

• You expect a lower tax year soon (a sabbatical, a move from California to a no-income-tax state, retirement).
• You are close to the one-year mark on a large lot and want to reach long-term treatment.
• You are an insider waiting for an open trading window, and your policy permits hedging.
• You plan to diversify gradually through direct indexing and tax-loss harvesting, which needs time to generate offsetting losses.

A protective put alone keeps all the upside but costs real money every quarter, which is why we cover it separately in how to hedge a stock portfolio with options and, for one stock, in our protective put guide. If you are a director or officer, a 10b5-1 plan is the standard way to schedule sales of the shares themselves. Writing calls without the put — the income trade behind covered call ETFs — does the opposite: it gives up upside and collects income but leaves the downside open. A collar is the two combined.

How do you choose collar strikes and expiry?

Choose the put strike from the loss you can absorb, the call strike from the zero-cost solve, and the expiry from how long you need the hedge. In that order — never start from the call.

Expiry. Longer-dated collars are more efficient per day because option value doesn’t scale linearly with time, and they mean fewer rolls and fewer transactions. Shorter ones let you reset strikes as the stock moves. For most positions, 90 to 180 days balances both. Avoid expiries that straddle an earnings date unless you mean to hedge it.

Size. You don’t have to collar everything. A common structure is to collar the shares you intend to sell over the next 12–24 months, sell a tranche each quarter, and leave a smaller long-term core unhedged.

What does a collar look like on a real-sized position?

Here is an illustrative collar on a position of the size we see among Bay Area executives. It shows the numbers you should have in front of you before placing the trade.

1. Position: 20,000 shares at $150 = $3,000,000. Cost basis $7.50 a share.
2. Tax if sold today: gain of $142.50 × 20,000 = $2,850,000. At 23.8% federal, that is $678,300 before state tax.
3. Buy 200 puts at the $135 strike (90%), 90 days, at about $2.65 = $53,000.
4. Sell 200 calls at the $172.50 strike (115%), same expiry, at about $2.52 = $50,300.
5. Net cost: $2,700, or 0.09% of the position.
6. Result for the quarter: the position is worth at least $2,700,000 and at most $3,450,000 at expiry, before the net premium.

Compare that with the unhedged position: a 30% drawdown, which large-cap tech names have had several times in the last decade, would take it to $2,100,000. The collar turns a potential $900,000 loss into a maximum of about $302,700 for the quarter.

What are the tax rules for collars?

Two parts of the tax code matter: constructive sales under Section 1259 and straddles under Section 1092. Neither stops you from collaring, but both shape the strikes you can use.

Constructive sales. If a hedge removes substantially all of your risk of loss and opportunity for gain on appreciated stock, the IRS can treat it as a sale on the day you enter it. A very tight collar — say a 98 put and a 102 call — looks like a sale in all but name. The statute gives no bright-line safe band, and practitioners generally want a meaningful gap between the strikes. The wider balanced ranges above are chosen with that in mind, but the answer for your position is your tax adviser’s call, not ours.

Straddles. Stock plus a put is a straddle for tax purposes. The rules can defer a loss on one leg while you hold a gain on the other, and they can suspend or reset the holding period of stock you have held for less than a year. If a large lot is close to going long-term, collaring it early can be expensive.

Our guides on taxes on sold stock and tax-efficient investing cover the diversification side of the plan.

How do you manage and roll a collar?

You manage a collar by deciding in advance what you will do in each of three scenarios, then following the plan instead of the headlines.

1. Stock drifts between the strikes. About two to three weeks before expiry, close both options and open a new collar around the current price. Re-solve the zero-cost call each time.
2. Stock rallies toward the call strike. Buy back the call and sell a higher one further out (“roll up and out”). You will usually pay a small debit; that is the cost of keeping the shares. If you were planning to sell anyway, you can let the shares go at the strike — that is a sale at a price you chose.
3. Stock falls toward the put. The put is now worth real money. You can sell it and buy a lower put to bank the gain (“roll down”), or exercise it and sell the shares at the floor if the thesis has broken.

Two practical points. First, use limit orders at the mid-price and enter both legs as a single spread order so you are never half-hedged. Second, check your broker’s treatment of the shares: some require the stock to be held in the same account as the options, and early assignment on the call is possible, especially just before an ex-dividend date.

What should you check before opening a collar?

1. Confirm your company’s insider trading and hedging policy, and your trading window.
2. Decide the floor you need: the value below which your plans — a house, a tax bill, a fund commitment — break.
3. Solve for the zero-cost call at 90, 120 and 180 days and pick the expiry that gives the best band.
4. Have your tax adviser review the strikes for constructive-sale and straddle issues.
5. Pair it with a written diversification plan: which tranche you sell each quarter and when the collar comes off.
6. Set price alerts at both strikes and a calendar reminder three weeks before expiry.

Frequently asked questions

Key takeaways

1. A collar is a bought put plus a sold call on stock you own; it sets a floor and a ceiling on the position for a fixed period.
2. At roughly 90% and 115% strikes for 90 days, the call usually pays for most or all of the put — the price is the upside above the call strike.
3. The collar’s job is to buy time: it lets you diversify on a tax-aware schedule instead of selling everything at once or holding everything unhedged.
4. Keep the band wide enough to avoid constructive-sale treatment under Section 1259, and expect the straddle rules of Section 1092 to apply.
5. Plan the rolls before you open the trade: when the stock rallies through the call, when it falls to the put, and at every expiry.
6. Insiders must clear hedges with their company first; many policies ban them outright.

Sources and method

1. OCC, Characteristics and Risks of Standardized Options — contract terms (100 shares per contract), exercise and assignment
2. 26 U.S. Code § 1259, Constructive sales treatment — when a hedge on appreciated stock is taxed as a sale
3. 26 U.S. Code § 1092, Straddles — loss deferral and holding-period rules for offsetting positions
4. IRS Topic 409, Capital gains and losses — long-term capital gains rates (0%, 15%, 20%)
5. IRS, Net Investment Income Tax — the additional 3.8% on investment income above the thresholds
6. SEC Release 33-10593, Disclosure of Hedging by Employees, Officers and Directors — company disclosure of hedging policies

Option prices in this article are illustrative Black–Scholes values at 30% implied volatility and a 4% risk-free rate unless stated; real quotes include volatility skew, which usually makes downside puts more expensive and upside calls cheaper than these figures. The worked example is hypothetical. Tax rules are summarized for 2026 federal law and are not tax advice.