2004issue C051
Constructing protective collars and reading cheap premia
A protective collar is assembled by bounding further decline with a put, then selling only enough call premium to cover that put's time value. A covered-call stop and a cheap far out-of-the-money option are separate structures, with different exits and different chances of finishing in the money.
- Build the loss bound first: one long put per 100-share lot, struck at the money or just in the money if the aim is to offset further declines most tightly.
- Sell a call at the same strike or a higher strike only so its premium pays for the put's time value. An out-of-the-money short call leaves additional upside until assignment.
- A covered call is handled as a spread, so a conventional stop may be unavailable. A contingency order can sell the whole position once the stock reaches a chosen price.
- Read listed premia as implied chances of finishing in the money, then check that a usable bid exists before treating a cheap far out-of-the-money option as an easy exit.
The three-leg collar
A protective collar is a three-leg stock hedge. It is built by holding the stock, buying one put per 100-share lot, and selling a call at the same strike or a higher strike so the short-call premium pays for the put's time value.
The short call may sit at the put strike or above it. In either case the call is there to offset the put's time value, not to replace the put as the bound on further decline.
Set the loss bound with the put
A protective put is a long put held against the stock to bound further decline. Any remaining downside is the gap between the stock price and the put strike.
Placing the long put at the money or just in the money is presented as the construction that most tightly offsets further declines in the stock. An out-of-the-money protective put leaves residual downside equal to the distance between the stock price and that put strike.
Finance the put with a short call
Once the put is in place, the short call is added so its premium pays for the put's time value. If the short call is sized only to cover the put's cost, that call can be struck out of the money, which leaves additional upside until assignment.
Call and put premiums are described as reflecting the chance the option finishes in the money at expiration, so a higher call strike implies a lower chance of finishing profitable.
A covered-call stop is a different structure
A covered call pairs long stock with a short call and is handled as a spread, which changes which exit orders a broker will accept. Many brokers will not accept a conventional stop order on the combined position.
When a stop on the spread is unavailable, a contingency order can sell the entire position once the underlying stock reaches a chosen price, subject to that broker's order types. That exit watches the stock alone. It is not the same construction as a long put that bounds further decline.
Cheap far out-of-the-money premia
Option premium analysis reads a listed price as an implied chance of finishing in the money, then checks whether a usable bid exists so the position can be exited. An out-of-the-money option sits beyond the current stock price, carries a lower chance of finishing in the money at expiration, and often has a thin or missing bid.
Whether a long call can gain value is attributed to the size of the underlying move, prevailing volatility, and how much time remains for that move to occur. Far out-of-the-money options that trade near 25 cents may show a bid of only 5 cents or no bid at all, which makes an exit difficult even when the entry premium looks small.
All readings on this track · 19 readings
- 2002Rebuilding a long-stock book with calls, puts and collars
- 2004Constructing protective collars and reading cheap premia
- 2004Protective collar, straddle exits, and index settlement
- 2005Collar and backspread construction as a pairing problem
- 2006Protective collar, net delta, and implied volatility
- 2007Interest as a sizing filter on collared stock
- 2008Collar versus bull call spread: capital and inventory
- 2008A long-stock case that sizes cash risk, then stays open with a protective put, covered calls, and a collar
- 2008Assignment as a planned handoff from put spread to collar
- 2008Protective collar rolls and straddle entry in extreme volatility
- 2010A margin call is a late exam in position size
- 2011Protective collars and covered calls after a volatility shock
- 2011Mid-life butterfly and collar adjustments across range and correction
- 2012Stacking a 1-by-2 overlay and a collar on underwater stock
- 2013Odd-lot mini-options for covered calls, puts, and collars
- 2014Zero-debit call-ratio repair for a broken long stock
- 2014An open collar funds the puts without capping every share
- 2018A protective collar as an event-risk budget
- 2020Constructing position-level collars around unsold holdings