Collar Strategy

What is a collar strategy?

A collar strategy is a hedge that combines long stock, a long put below the stock price, and a short call above it in the same expiration. The put sets a sale floor that limits the downside, and the call premium pays for part or all of the put while capping the upside at the call strike.

A standard position uses one put and one call for each 100 shares, with matching expiration and deliverables.

How to calculate collar profit, loss, and breakeven

At expiration, the stock-and-options value per share is the stock price bounded by the put and call strikes. Subtract the stock reference price and the net option debit to calculate P&L. A net option credit adds to the result.

The example starts with 100 shares at $100, buys the 95 put for $2.80, and sells the 110 call for $2.10. The options cost $70 net. Minimum expiration P&L is −$570, maximum profit is $930, and breakeven is $100.70.

Below $95, the put offsets further stock declines point for point. Between $95 and $110, the position’s expiration result changes by $100 for every one-dollar stock move. Above $110, the short call offsets additional stock gains.

For a new stock purchase, use the share entry price as the P&L reference. For an existing holding, calculate both the lifetime result from the original cost and the forward result from today’s price. The collar’s strike range is the same; the measured profit changes with the reference.

Zero-cost collars and volatility skew

The put purchase and call sale create one net cash flow. A zero-cost collar matches those two executed premiums. Compare different put floors and call ceilings to see how the funding changes.

Volatility skew shapes the relative option prices. Compare the quoted premiums for the actual strikes and expiration. Use the resulting debit or credit to calculate the finished range, then include execution charges in the trade total.

How to choose collar strikes and expiration

Select the put strike from the protected value you want and the call strike from a sale price you are prepared to accept. Match the expiration to the holding period or event you are trading through. The options profit calculator compares the premium, protected value, sale ceiling, and breakeven in one view while both strikes are adjusted.

Collar delta and volatility before expiration

Before expiration, one standard collar has share-equivalent delta of 100 + 100 × put delta − 100 × call delta, using the quoted delta of each long option. The put and call also contribute opposing volatility exposures. Price all three legs together to see the complete position at each date.

Managing a collar and assignment

Assignment of the short call delivers the covered shares and leaves the put open. Exercise of the put sells its specified shares. Plan those transitions alongside the ex-dividend date and the position you intend to retain. When rolling, add the closing cash flow and replacement cash flow to the original trade result.

Risks and limitations of collars

• Size the position from the floor’s loss. The example can lose $570 below $95, because the put strike sits below the entry price and the options cost $70 net.
• Set the call strike at a price you are glad to sell at. The short call caps the gain at $930 above $110, and a zero-cost collar is funded by giving up that upside.
• Watch the ex-dividend date while the short call is in the money. The American-style short call can be assigned before expiration, most often just ahead of that date, which delivers the shares while the put stays open.
• Price an early exit from all three legs. The floor and cap are expiration values; before then the position moves with its net delta and the two options’ opposing volatility exposures.
• Count every execution charge and roll in the result. Three legs carry execution charges, and each roll adds new closing and replacement cash flows.

Bottom line

A collar keeps you in the stock through the event with the loss fenced in, and the 110 call’s $2.10 pays for most of the 95 put’s $2.80. Set the floor first, then a ceiling you are prepared to sell at, and price all three legs together.