What a Collar Actually Combines

A collar strategy combines three elements held simultaneously: ownership of the underlying stock, a protective put purchased below the current price, and a covered call sold above the current price. The put establishes a floor beneath which losses are capped, while the call caps the upside in exchange for premium that helps offset the cost of the put. The result is a position with a clearly defined range of possible outcomes between the two strikes.

Why Traders Reach for a Collar

The collar suits investors holding a stock with substantial unrealised gains who want protection against a downturn but are unwilling to sell outright and trigger capital gains tax, or who simply want to stay invested through an uncertain period — an earnings announcement, a broader market wobble — without fully exiting the position. It trades away some upside potential specifically to buy that downside protection cheaply, often near zero net cost.

The Zero-Cost Collar

A particularly popular variant is the zero-cost collar, where the strikes for the put and call are chosen so that the premium received from selling the call almost exactly offsets the premium paid for the put, resulting in little to no net cash outlay for the protection. Achieving this typically requires selling a call strike that is not too far out of the money, which correspondingly narrows the profitable range the stock can move within before the position’s upside gets capped.

The Trade-Off at the Core of the Strategy

Every collar involves a direct trade-off: cheaper (or free) downside protection in exchange for a hard ceiling on upside gains. If the stock rallies strongly beyond the call strike, the investor’s gains stop there, and any further appreciation accrues to whoever bought the call instead. This makes the collar unsuitable for investors who believe strongly in significant further upside — it is a strategy for protecting existing gains, not for maximising future ones.

Choosing the Put and Call Strikes

The put strike defines the floor and should be chosen based on the maximum loss the investor is willing to tolerate from current levels — closer strikes cost more but protect more, while further strikes cost less but leave more downside exposed. The call strike defines the ceiling and should be chosen based on how much upside the investor is comfortable forgoing, balanced against how much premium is needed to fund the desired level of put protection.

Collars Around Known Events

A common practical use is establishing a collar just ahead of a known event carrying binary risk — a company’s quarterly results, a major regulatory decision, an index rebalancing — where an investor wants continued exposure to the underlying but wants to cap the downside from a surprise negative outcome without exiting the position and potentially missing a positive surprise entirely.

Managing a Collar as It Approaches Expiry

As expiry nears, three broad outcomes are possible: the stock sits between the two strikes, in which case both options expire worthless and the investor can establish a fresh collar for the next period if continued protection is wanted; the stock rises above the call strike, in which case the shares may get called away at that strike price, realising the capped gain; or the stock falls below the put strike, in which case the put can be exercised or sold to realise the protection.

Collars on Indian Large-Caps

Collar strategies are most practical on liquid, large-cap Indian stocks with actively traded options chains, where both put and call strikes near the desired levels have reasonable liquidity and tight bid-ask spreads. Applying a collar to a thinly traded stock often results in poor fills on one or both legs, eroding much of the strategy’s cost efficiency and defeating the purpose of structuring a low-cost hedge in the first place.

Collar vs Simply Selling the Stock

Compared to outright selling the position, a collar keeps the investor exposed to dividends, voting rights, and any capped upside, while providing meaningful downside protection — but it introduces complexity, requires monitoring two additional option legs, and still caps the very upside the investor might have wanted to keep by holding the stock in the first place. For investors who are fundamentally still bullish but want short-term insurance, this trade-off frequently makes more sense than an outright exit.

A Worked Example

An investor holding a stock at 1,000 who wants protection below 950 while remaining comfortable capping gains above 1,050 could buy a 950-strike put and sell a 1,050-strike call in the same expiry. If the premiums roughly offset, the position now has a defined range: losses capped near 50 points below entry, gains capped near 50 points above, for little or no net premium outlay — a materially different risk profile than holding the naked stock position alone.

The Bottom Line

The collar strategy offers a practical, often low-cost way to protect meaningful unrealised gains on a stock position without fully exiting it, at the cost of capping further upside within a defined range. It suits investors navigating uncertain periods who want to stay invested rather than sell outright, and understanding how to select strikes for both the protective put and the funding call is the key skill in structuring a collar that matches an investor’s actual risk tolerance.