Fence Spread: A Three-Way Hedge for Long Stock

Key Takeaways

• A fence spread is a collar plus an extra short put at a lower strike to fund the hedge.
• The added short put often lets you enter for a credit or zero cost.
• It removes the true floor a plain collar gives, exposing you below the short put strike.
• It fits investors who want cheap protection and accept catastrophe risk on a deep drop.

What It Is

A standard collar holds stock, buys a put for a floor, and sells a call for a ceiling. A fence spread adds one more leg: a short put at a lower strike. The premium from that extra put offsets more of the long put's cost.

The structure is long stock, long put (protection), short call (ceiling), and short put (financing). It is "three-way" because three options sit around the stock. The benefit is cheaper or free protection. The cost is that the lower short put cancels your protection below its strike, so a severe decline hurts again.

The Intuition

A zero-cost collar already funds the put by selling a call. A fence goes further: it sells a second option, the lower put, to raise even more premium, often enough to bank a credit.

The catch is what you sold. The lower short put obligates you to buy more exposure if the stock falls that far. So your protection is no longer a solid floor; it is a protected band that ends at the short put strike. Below that, you are exposed again. You are betting a crash that deep is unlikely, and you take income for that bet.

How a Fence Spread Options Strategy Works

The four components and the resulting zones:

Fence = long stock + long put (Kp) + short call (Kc) + short put (Kps)
  Kps < Kp < current price < Kc

Below Kps: protection gone, losses resume (and short put adds exposure)
Kps to Kp: protected band, downside limited
Kp to Kc:  stock moves freely
Above Kc:  capped, called away at Kc

The long put and short call act like a collar. The extra short put at Kps brings in premium that often makes the package a net credit. That credit and wider income come at the price of a gap: between the worst case at Kps and a deep crash, you are unhedged. A fence therefore suits a view that a moderate dip is the real risk and a collapse is remote.

Worked Example

You own 100 shares at 100 and want protection cheaply, believing a sharp crash is unlikely.

A plain collar buys a 95 put for 3.00 and sells a 110 call for 3.00, costing nothing, with a hard floor at 95. To turn it into a fence, you also sell an 85 put for 1.00. Now you collect a 1.00 net credit.

Your protected band runs from 95 down to 85. If the stock drifts to 90, your 95 put still protects you. If it falls to 88, you are protected to 85. But if it crashes to 70, your protection ended at 85 and the short 85 put adds losses below that, so your downside resumes and even accelerates. Compared with the collar, you gained 1.00 of credit and a wider breakeven band, and you gave up the unconditional floor the collar provided.

Common Mistakes

1. Believing you still have a floor. A fence protects only a band. Below the short put strike, losses resume and the short put adds exposure. Traders who treat it like a collar are caught in a crash.

2. Selling the lower put too close. A high short put strike collects more premium but ends your protection sooner, narrowing the band you are actually hedged across.

3. Using a fence when you fear a crash. The whole structure assumes a deep drop is unlikely. If tail risk is your real worry, a plain collar or long put is the right tool.

4. Doubling exposure on assignment. If the short put is assigned, you buy more shares on top of your existing stock, increasing your position right as it falls.

5. Ignoring margin on the extra short put. The lower short put is a naked-style obligation against your account and carries margin requirements beyond a simple collar.

Frequently Asked Questions

What is a fence spread options strategy in simple terms? A fence spread options strategy is a collar with an added short put at a lower strike. The extra put helps pay for the hedge, often for a credit, but it removes your protection if the stock falls below that lower strike.

How does a fence spread affect investment decisions? It gives cheaper or free protection over a moderate range while accepting risk on a deep drop. In the worked example, adding an 85 short put turned a free collar into a 1.00 credit but ended protection at 85.

What is a real-world example of a fence spread? An investor who expects a mild pullback rather than a crash buys a put, sells a call, and sells a lower put, collecting a credit and a wider band while staying exposed only to a severe decline.

How can investors use a fence spread effectively? Set the lower short put far enough below the price that the unhedged zone is one you can tolerate, size it for the margin involved, and use it only when you genuinely view a crash as remote.

How is a fence spread different from a zero-cost collar? A zero-cost collar gives an unconditional floor at the long put strike. A fence sells an extra lower put, so protection ends at that strike and a deep drop exposes you again, in exchange for more premium.

Sources

1. OIC (The Options Industry Council). "Collar (Protective Collar)." https://www.optionseducation.org/strategies/all-strategies/collar-protective-collar
2. Fidelity Learning Center. "Collar (long stock + long put + short call)." https://www.fidelity.com/learning-center/investment-products/options/options-strategy-guide/collar
3. Cboe Options Institute. "Options Education and Strategy Resources." https://www.cboe.com/optionsinstitute/
4. Corporate Finance Institute. "Collar Option Strategy." https://corporatefinanceinstitute.com/resources/derivatives/collar-option-strategy/

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.