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Option Structures

Bear Put Spread

A vertical debit spread using put options — buy a higher-strike put and sell a lower-strike put to profit from a downward SPX move at reduced cost.

A bear put spread is the mirror image of a bull call spread: you buy a put at a higher strike price and sell a put at a lower strike price, both sharing the same expiration date. It is the standard directional structure when you expect SPX to fall.

Example — SPX at 6,000:

  • Buy the SPX 6,000 Put for $12.00
  • Sell the SPX 5,980 Put for $5.00
  • Net debit (your cost & max loss): $12.00 − $5.00 = $7.00
  • Width between strikes: 20 points
  • Max profit: 20 − 7 = $13.00 (reached at or below 5,980)
  • Breakeven: 6,000 − 7 = 5,993

Notice the perfect symmetry with the bull call spread. A bull call spread profits as SPX rises toward the upper strike; a bear put spread profits as SPX falls toward the lower strike. Both cost a small net debit, both cap your loss at that debit, and both cap your gain at the width minus the debit. Same structure, opposite direction.

When to use a bear put spread:

  • SPXXL classifies the session as a Trend Day (bearish) or an Expansion Day with downside bias
  • You have a directional bias to the downside
  • You want defined risk without the full cost of a naked long put

Key benefits for 0DTE traders:

  • Lower cost of entry compared to a single put
  • Lower breakeven — SPX doesn't need to fall as far
  • Less theta drag — the sold put decays in your favor
  • Defined risk — maximum loss is always the net debit

Beginner mistakes to avoid:

  • Building the spread too wide — negates the cost-reduction benefit
  • Placing the short (lower) strike too far away — you'll never see full max profit
  • Legging in — always enter both legs as a single spread order
  • Forgetting it's still directional — you lose the entire net debit if SPX rises instead

How SPXXL helps:

When SPXXL classifies a bearish session, the engine's projected downside levels and key support zones help you place your short (lower) strike where SPX is realistically expected to travel. The session classification removes guesswork from the most critical decision: which direction to bet.

Important: Options trading involves substantial risk of loss and is not suitable for all investors. This definition is educational and uses SPX for illustration — it is not financial advice.

Related Terms

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