One ticker holds 80% of your net worth. What fires when the floor drops out?
Correlation to 1
What protects you when correlation goes to 1?
Diversification is a fair-weather guarantee. In a crash, scattered positions converge, correlation snaps to 1, and the spread you thought you had collapses in a single session.
This is the one-hit-wonder failure mode in pure form: the asset that made you regresses faster than you can act. The protection has to be already armed, not assembled after the fact — the same logic behind Spitznagel’s convex tail-hedge architecture.
The cost of an unhedged lock-up
The cost of an unhedged lock-up
A daily loss greater than 5 standard deviations is a once-in-13,954-year event under a normal model — and a once-in-35-year event under the fat-tailed reality of equity returns (Student t, ν = 10). Fat tails are roughly 400x more frequent than the Gaussian math your risk report assumes.
Inside a lock-up or a single-stock concentration, that gap is paper wealth wiped before you hold a single liquid share. The drawdown lands; your hands are tied — the precise mechanism that destroyed concentrated holders in the 2008 financial crisis.
Liquidity that stays free
Liquidity that stays free
The Fail-Safe Circuit is an overlay, not a liquidation. Your underlying position stays intact and your capital stays mobile — free to pivot when the next paradigm shift arrives.
You buy protection without selling the thing you believe in. Velocity control, kept.
How the fail-safe circuit works
How the fail-safe circuit works
Put-option overlay sized to your beta
The circuit holds a put-option overlay scaled to your portfolio’s beta and tail exposure. It stays dormant in normal regimes and triggers when the model detects correlation breakdown — measured as a widening value-at-risk spread between a normal-innovation GARCH model and a fat-tailed (Generalized Pareto) one. The GPD signal is the cleanest because extreme-value theory makes it native to the tail; the quantitative method behind the trigger is documented in full.
In an 11-year out-of-sample backtest on DAX futures, this dynamic tail-risk protection raised the Sharpe ratio to 0.459 from 0.302 and cut the worst drawdown to 42.96% from 57.91% versus buy-and-hold — while outperforming traditional protection strategies (Packham, Papenbrock, Schwendner & Woebbeking, Quantitative Finance, 2017).
Stated limitation
This is a tail-risk strategy, not an arbitrary-event hedge. It cannot guarantee protection against every shock, and it carries basis risk: the overlay is calibrated to your sector, not to a specific catastrophe. The signal reduces tail exposure; it does not eliminate it.
Objection
“Isn’t options hedging just expensive insurance?”
Static long-dated puts bleed premium continuously — the cost the persistent volatility skew bakes in. The circuit instead stays out of the market when signals are quiet and arms only when risk builds, which is why the backtested strategy improved returns rather than dragging them. It is positioned automatically, not held perpetually, so you pay for protection when it is actually pricing risk.
3 fields · 48-hour document · no call, no sequence. If your tail is smaller than you feared, the document will say so.
Frequently asked questions
How do put-option tail hedges actually perform?
In an 11-year out-of-sample backtest on DAX futures, a dynamic put-option tail hedge raised the Sharpe ratio to 0.459 from 0.302 and cut the worst drawdown to 42.96% from 57.91% versus buy-and-hold (Packham et al., 2017). It improves risk-adjusted return precisely because it is armed selectively, not held continuously.
What is the cost of carry on this hedge?
Static long-dated puts bleed premium continuously because of the persistent volatility skew, which is why naive option insurance drags returns. This circuit stays out of the market when signals are quiet and arms only when the value-at-risk spread widens, so carry is paid when risk is actually pricing rather than as a constant tax.
Does the protection execute automatically?
Yes. The overlay is dormant in normal regimes and triggers on its own when the model detects correlation breakdown — a widening spread between a normal-innovation GARCH model and a fat-tailed Generalized Pareto one. No manual call, no human latency between the signal and the position.
What is the basis risk?
The overlay is calibrated to your sector and beta, not to a specific catastrophe, so a shock that misses your calibration is only partially covered. This is a tail-risk strategy, not an arbitrary-event hedge: it reduces tail exposure, it does not eliminate it.
Is this suitable for a concentrated single-stock position?
It is designed for exactly that failure mode — one ticker holding most of your net worth, where diversification collapses as correlation snaps to 1 in a crash. The put overlay protects the position without forcing a sale, keeping the underlying intact and capital mobile.