Fenced Collar: A Lower-Cost Collar Variant

Key Takeaways

• A fenced collar adds a short out-of-the-money put to a standard collar to reduce cost.
• The extra premium can fund the hedge fully, but it reintroduces loss below the lower put.
• Protection is partial: you are covered between the two put strikes, then exposed again.
• It suits a mildly bullish view where a deep crash is seen as unlikely.

What It Is

A fenced collar starts as a normal collar: long stock, a long put for a floor, and a short call for a ceiling. The fence then adds one more leg, a short put at a strike below the protective put. That extra short put brings in premium that lowers or erases the cost of the hedge.

The structure trades cost for completeness of protection. A standard collar protects all the way down. The fence protects only down to the lower short put strike, after which losses resume because the short put obligates you to buy more shares.

The Intuition

Full downside protection is expensive, and most of that cost pays for protection against a rare deep crash. The fence assumes that crash is unlikely and sells it back to the market through the lower put.

You keep protection for the moderate decline you actually worry about, the zone between the two put strikes. You give up protection against a severe drop in exchange for a cheaper or free hedge. It is a bet that the worst case will not happen.

How the Fenced Collar Works

You hold the stock, buy a put at Kp1 for the floor, sell a call at Kc for the ceiling, and sell a second put at Kp2 below Kp1. The premium from the short call plus the short put offsets the cost of the long put.

The structure, with stock price S and strikes Kp2 < Kp1 < Kc:

Legs       = long stock + long put (Kp1) + short call (Kc) + short put (Kp2)
Net cost   = put(Kp1) premium - call(Kc) premium - put(Kp2) premium
Protected  = between Kp2 and Kp1 (loss capped here)
Re-exposed = below Kp2 (short put forces buying more shares)
Max profit = (Kc - S) - net debit, capped at the call strike

Between Kp1 and Kc, you keep the shares. Above Kc, the call is assigned. Between Kp2 and Kp1, the long put caps your loss. Below Kp2, the short put is assigned and your downside opens up again.

The payoff at expiration:

Profit
   |          ___________  <- capped at Kc
   |         /
 0 +--------/--------------- Stock price
   |       /
   |______/ flat (protected)
   |     /
   |____/  loss resumes below Kp2
     Kp2  Kp1   Kc

Worked Example

Suppose you own 100 shares of XYZ at 50. You buy a 47 put for 1.40, sell a 55 call for 0.90, and sell a 42 put for 0.50. Net cost is 1.40 minus 0.90 minus 0.50, or zero.

You are protected between 42 and 47. If XYZ falls to 45, your loss is capped near 3 points by the long put. If XYZ rallies to 60, the call is assigned at 55. But if XYZ collapses to 35, the 42 short put is assigned, and your losses grow again below 42, just as if you owned extra shares from that level.

Common Mistakes

1. Treating it as full protection. The fence only protects between the two put strikes. A sharp drop below the lower put exposes you again, sometimes severely.

2. Setting the lower put too close. A narrow gap between the two puts saves little premium and offers a thin protection band. The savings rarely justify the added complexity.

3. Underestimating the extra assignment. The short put can force you to buy more shares at the lower strike, increasing your position size right as the stock falls.

4. Using it in high-volatility names. A fence assumes the deep crash is unlikely. On a volatile stock, the very scenario you sold protection against is the most likely one.

5. Confusing it with a costless collar. A costless collar protects all the way down. A fenced collar gives up that deep protection to lower the cost, a meaningfully different risk profile.

Frequently Asked Questions

What is a fenced collar in simple terms? It is a collar with an extra short put added below the protective put to make the hedge cheaper. You stay protected for a moderate fall but lose that protection if the stock drops below the lower strike.

How does a fenced collar affect investment decisions? It lowers the cost of hedging, sometimes to zero, in exchange for accepting risk in a deep decline. Use it when you want protection against a normal pullback but judge a crash unlikely, and only when you could absorb buying more shares at the lower strike.

What is a real-world example of a fenced collar? Own 100 shares at 50, buy a 47 put, sell a 55 call, and sell a 42 put so the premiums net to zero. You are protected between 42 and 47, capped at 55, and exposed again below 42.

How can investors use a fenced collar effectively? Place the lower put at a level where you would genuinely be willing to own more shares, and keep the protected band wide enough to matter. Avoid it on highly volatile names where a deep drop is plausible.

How is a fenced collar different from a standard collar? A standard collar protects all the way down to the put strike. A fenced collar adds a short put that funds the hedge but caps protection at the lower strike, leaving deep-decline risk open.

Sources

1. The Options Industry Council (OIC). "Collar (Protective Collar)." https://www.optionseducation.org/strategies/all-strategies/collar-protective-collar
2. Strike. "Fence Option: Strategy, Construction, Payoff." https://www.strike.money/options/fence-option
3. SuperMoney. "Options Fence: Strategy, Construction, and Benefits." https://www.supermoney.com/encyclopedia/fence-options
4. Fidelity Learning Center. "Collar." https://www.fidelity.com/learning-center/investment-products/options/options-strategy-guide/collar

Disclaimer

This article is educational content only and is not financial advice. Nothing here is a recommendation to buy, sell, or hold any security. Consult a licensed advisor before making investment decisions.