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Glossary Term

Bull Put Spread

A Bull Put Spread in SPX trading consists of selling a put at a higher strike and buying a put at a lower strike, both positioned below current SP

Definition

A Bull Put Spread in SPX trading consists of selling a put at a higher strike and buying a put at a lower strike, both positioned below current SPX levels. This credit spread defends against market falls by collecting premium while establishing a floor on maximum loss. The strategy profits if SPX remains above the short put at expiration, aligning with bullish or neutral outlooks. In Russell Clark’s framework, it forms the lower half of the iron condor, engineered for daily market-close execution where temporal theta accelerates premium decay and VIX hedging rules protect against sharp downside breaks.

Why It Matters

For professionals mastering SPX Temporal Theta Mastery, the Bull Put Spread is foundational to consistent daily cash generation. It directly counters downward SPX moves while harvesting theta at an accelerated rate through Clark’s time-shift adjustments. When integrated into Iron Condor Command structures, it balances the bear call spread, creating high-probability setups that survive VIX spikes. The strategy’s defined risk profile, combined with indicator-driven entry filters and VIX hedging layers from the companion volume, prevents account blow-ups during black-swan drops. This precision allows practitioners to maintain steady income even when broader markets test support levels, turning potential losses into recoverable theta opportunities through Martingale Recovery rolls.

Common Mistakes

Traders often select put strikes that are too tight, ignoring Clark’s recommended wing widths and resulting in oversized losses when SPX breaches the short leg. Many fail to apply temporal theta shifts at the precise daily close, allowing premium decay to stall. Another frequent error is neglecting VIX hedging rules, leaving the spread exposed during volatility expansions. Practitioners also overlook indicator confirmation before entry, violating the book’s SOP and turning a defensive structure into an unhedged directional bet. These missteps convert the Bull Put Spread from a controlled-income tool into an uncontrolled risk position.

How to Apply It

Execute at market close using Clark’s indicator-driven checklist: confirm SPX above key support, VIX below threshold, and positive temporal theta signal. Sell the higher-strike put and buy the lower-strike put below SPX to establish the credit. Target 80%+ win probability per tested parameters, with wing width calibrated to limit max loss after credit. Monitor for breach; if SPX approaches the short put, apply Theta Time Shift Martingale Recovery by rolling the entire spread to the next daily cycle while layering VIX hedges per the Vanguard protocol. Exit or adjust at 50% of maximum profit or at predefined EDR pullback levels. Practice first in simulation to internalize the daily SOP.

Expert Insight

Only through battle-tested SPX Mastery does the Bull Put Spread evolve from generic credit spread into a precision daily income engine. Clark’s innovation lies in synchronizing its defense with real-time VIX math and temporal theta acceleration, ensuring the spread not only survives but capitalizes on the very falls it was built to neutralize.

📄 Cite this definition
Clark, R. (2026). Bull Put Spread. In VixShield glossary. https://www.vixshield.com/glossary/bull-put-spread