How the SPX Tail Hedge Works

What it is

Our tail hedge is a bear put debit spread on the S&P 500 index (SPX). It is a permanent, always-on insurance policy against a severe market drawdown. We opened the first one in March when volatility subsided after the Iran strikes. We roll it quarterly. We never take it off.

The structure is simple. We buy a put at a strike about 15 to 17 percent below the current index level, and we sell a put at a strike about 30 to 33 percent below. The difference between the two strikes is the width of the spread. The combined position pays off if the index declines into that band between the two strikes.

Why SPX and not SPY

Feature	SPX	SPY
Settlement	Cash-settled	Physical delivery (shares)
Style	European (exercise at expiry only)	American (can be exercised any time)
Multiplier	100 (per index point)	100 (per ETF share)
Contracts needed per $1M notional	Fewer, larger contracts	10x more contracts
Early assignment risk	None	Real, especially near dividend dates
Tax treatment (US)	Section 1256, 60/40 long/short term	Standard equity options

SPX is the professional hedge instrument. Cash settlement means no share delivery surprises at expiry. European style means no early assignment during a volatility spike. The Section 1256 tax treatment is structurally favorable. We migrated from SPY to SPX after the first round of trades specifically to get these benefits.

Why these strikes

The choice of strikes is deliberate.

Leg	Strike location	Purpose	Trade-off
Long put (BUY)	15-17% below spot	Defines where the hedge begins to pay	Closer to spot costs more but pays sooner. Farther OTM is cheaper but misses ordinary corrections.
Short put (SELL)	30-33% below spot	Caps the payout, finances part of the long put	Shorting this put is what makes the hedge cheap. We give up payout below this level in exchange for a smaller premium cost up front.

Historically, S&P 500 drawdowns of 10 to 20 percent happen often and are not catastrophic. Drawdowns beyond 30 percent are genuinely rare and systemic. Our strike choice says: we are not trying to hedge every wobble, we are trying to be paid when something real breaks in the system. That is where we need liquidity, and that is where our put-selling book is most exposed.

The current hedge, for context

We opened this structure on March 17, 2026. At the time SPX was trading around 6,710.

Parameter	Value
SPX at entry	approx. 6,710
Long put strike	5,600 (16.5% below spot)
Short put strike	4,500 (32.9% below spot)
Spread width	1,100 points
Expiration	June 18, 2026 (quarterly roll)
Cost as % of portfolio	approx. 1.1% combined
Maximum payout as % of portfolio	approx. 38% combined
Payout ratio (max : cost)	approx. 34 to 1

For every dollar paid, the hedge pays approximately thirty-four dollars if the index closes at or below the short strike on expiry. That is the shape of asymmetric insurance. Most of the time it expires worthless. Once in a while, it pays the portfolio through a real crash.

Priced to today: SPX 7000

If we were opening the hedge fresh today with SPX near 7,000, we would apply the same proportional structure. Strikes scale with the index. The payout math does not change, only the anchor point.

Parameter	March hedge (SPX 6710)	New hedge at SPX 7000
Long put strike	5,600 (16.5% OTM)	5,800 (17.1% OTM)
Short put strike	4,500 (32.9% OTM)	4,700 (32.9% OTM)
Spread width	1,100 points	1,100 points
Estimated net debit per spread	approx. $31 per share ($3,100 per contract)	approx. $30-35 per share ($3,000-3,500 per contract)
Maximum payout per spread	$110,000	$110,000
Payout ratio	approx. 35x	approx. 32x to 37x (rolls with pricing)

Payout at expiry

The table below shows the value of one 5800 / 4700 SPX bear put spread at various index levels on expiry, assuming an entry cost of approximately $3,200 per spread. Values are rounded and reflect intrinsic value at expiry (time value is zero on the last day).

SPX at expiry	% move from 7,000	5800 put intrinsic	4700 put obligation	Net spread value	P&L per spread
7,000+	flat or up	$0	$0	$0	-$3,200
6,500	-7.1%	$0	$0	$0	-$3,200
6,000	-14.3%	$0	$0	$0	-$3,200
5,800	-17.1%	$0	$0	$0 (at long strike)	-$3,200
5,500	-21.4%	$30,000	$0	$30,000	+$26,800 (approx. 8x)
5,000	-28.6%	$80,000	$0	$80,000	+$76,800 (approx. 24x)
4,700	-32.9%	$110,000	$0	$110,000 (MAX)	+$106,800 (approx. 33x)
4,500	-35.7%	$130,000	-$20,000	$110,000 (capped)	+$106,800 (approx. 33x)
4,000	-42.9%	$180,000	-$70,000	$110,000 (capped)	+$106,800 (approx. 33x)

The maximum loss is the premium paid at entry. There is no scenario in which we lose more than the initial debit. The maximum gain is the spread width times one hundred, minus the net debit, and caps at the short strike. Between the two strikes the payout is linear.

How the hedge interacts with the rest of the portfolio

The core of our book is selling cash-secured puts on high-quality companies. Those positions are short volatility and make money when markets are calm or rising. They lose money when markets drop sharply and everything correlates to one. That is the exact scenario the SPX hedge is built to pay off in.

Scenario	Core put book	SPX hedge	Net effect
Calm market, slow grind up	Collects theta steadily	Decays toward zero	Core profit absorbs hedge decay; substantial net gain
Routine correction (-5 to -10%)	Paper loss, usually recovers	Mostly worthless	Ride it out; hedge was not built for this
Deep correction (-15 to -25%)	Large paper losses; some positions get assigned	Partial to full payout, up to approx. 33x cost	Hedge proceeds cover a substantial portion of book drawdown; liquidity to buy back or redeploy
Severe crash (-30%+)	Multiple assignments; potential short-term drawdown	Capped payout at maximum	Hedge at full payout; we own quality companies at deep discounts with long runway

This is why we pay the premium every quarter. Not because we expect the crash, but because the cost of being wrong about a crash is knowable and small, while the cost of being unhedged when one arrives is potentially existential.

How we size it

The hedge cost is roughly one percent of the portfolio per quarter, or about three to four percent annualized. We consider this a fixed operational cost, the same way a business pays for property insurance. The payout ratio on a severe drawdown is structured so that the hedge by itself covers a large fraction of the put book losses in that scenario.

We do not try to over-hedge. Buying larger spreads or closer-to-the-money strikes increases the cost faster than it increases the effective protection. One appropriately-sized spread at the right strikes is more capital efficient than three oversized ones.

How we manage it

Action	Trigger
Do nothing	SPX above long strike, any time remaining
Partial profit	Spread reaches 75-80% of maximum payout before expiry
Full close	Spread reaches 90%+ of maximum payout, or spot nears short strike
Roll forward	DTE approaching 21 days on any position that has not paid
Roll up	Quarterly roll at calibrated new strikes as SPX drifts higher

The quarterly roll is the key discipline. If SPX rallies 5 percent between now and the next roll date, the new hedge will be struck 5 percent higher. The hedge always sits at a consistent proportional distance below the current index level. It does not drift out of alignment with the portfolio it is protecting.

What this is not

This is not a forecast of a market crash. We do not predict crashes. We position for the possibility of one because our core strategy has structural short-volatility exposure and because severe drawdowns are the scenarios that destroy otherwise excellent businesses.

This is also not a replacement for position-level risk management inside the core book. We still sell puts at conservative strikes, on quality companies, sized by Kelly-calibrated position sizing. The hedge is the last line. The first line is not buying bad positions in the first place.

The SPX hedge is permanent infrastructure, not a trade. It will run for as long as the fund exists.