Bull Put Spread

What Is a Bull Put Spread?

A bull put spread is a two-leg options strategy where you simultaneously sell a put option at a higher strike price and buy a put option at a lower strike price, both on the same underlying asset and with the same expiration date. Because you receive more premium from the short put than you pay for the long put, this is a net credit strategy — you collect cash upfront the moment the trade fills.

You profit when the underlying closes above your short put strike at expiration. Your maximum loss is fixed and defined from the start — the long put you purchased acts as your downside cap, meaning there are no nasty surprises. This makes the bull put spread one of the cleanest, most risk-controlled ways to express a bullish or neutral view.

When to Use It

• You are bullish or neutral on a stock. The underlying doesn't need to rally — it just needs to avoid falling below your short put strike. This is a lower-bar trade than buying a call outright.
• IV Rank (IVR) is elevated — ideally 50 or higher. High implied volatility means fatter premiums. The more premium you collect, the more the stock can move against you and you still break even. Astre's SparkEdge score is specifically boosted when IVR is elevated, making high-IVR environments the natural hunting ground for this setup.
• You want defined-risk exposure. Unlike selling a naked put — where a stock collapse could cost you far more than you collected — the long put in this spread defines your worst-case outcome before you ever enter the trade.
• You don't want to own 100 shares. A bull put spread lets you express a bullish view without tying up the capital required to own stock or a cash-secured put. It's a capital-efficient structure.

Structure

Both legs use the same underlying and the same expiration. The spread is typically entered as a single order — your broker routes both legs simultaneously at the net credit price.

Risk and Reward

• Max Profit: The net credit received. This is yours to keep if the stock closes above the short put strike at expiration.
• Max Loss: Width of the spread minus the net credit. For a $5-wide spread where you collected $1.50, your max loss is $3.50 per share ($350 per contract).
• Breakeven at Expiration: Short put strike minus the net credit received. If you sold the $50 put and collected $1.50, your breakeven is $48.50.

Example Trade

NVDA is trading at $950. SparkEdge = 87. IVR = 72. You're neutral-to-bullish and believe NVDA will hold above $900 through expiration three weeks out.

The trade requires no additional capital beyond margin for the spread width. If NVDA stays above $920 at expiration, both puts expire worthless and you keep the $250. If NVDA collapses to $870, your loss is capped at $1,750 — not a cent more.

Managing the Trade

Entering a trade well is only half the job. Knowing when and how to exit is what separates disciplined traders from gamblers.

• Target exit at 50% of max profit. In the example above, that means buying back the spread when it's worth $1.25. You collect half the available premium and eliminate the remaining risk. This is the standard professional approach — don't get greedy chasing the last dollar of decay.
• Stop loss at 200% of credit received. If the spread reaches $5.00 in value (double what you collected), consider closing the position. This limits the loss to a manageable level and preserves capital for better setups.
• Rolling the spread. If the stock drops toward your short strike, you can "roll" the spread by closing the current position and opening a new one at lower strikes and/or a later expiration. Rolling down and out can reduce your at-risk strike while collecting additional credit to lower your breakeven — but it also extends your time in the trade. Don't roll into a losing position indefinitely.

How Astre Surfaces Bull Put Spreads

The Options feed's Top Option Ideas section ranks bull put setups by SparkEdge score. When you see a high SparkEdge reading on a bull put setup, Astre has detected a confluence of favorable conditions: elevated IVR (fatter premiums), bullish price momentum aligned with SparkScore, and no major binary events — earnings, FDA decisions, or significant macro catalysts — within the expiration window.

You can filter the Options feed by Spreads to surface bull put and bear call setups specifically. Tapping any setup shows the full breakdown: strikes, expiration, max profit, max loss, probability of profit, and the components driving the SparkEdge score.

Common Mistakes

• Selling into earnings. Implied volatility is elevated before earnings specifically because the stock might make a large move. While IV crush after an in-line report is helpful, a meaningful earnings miss can blow through your short strike and drive the spread to max loss in a single session. Avoid binary events unless that's your explicit thesis — and even then, size very small.
• Going too wide on the spread. A $20-wide spread has a $2,000 max loss per contract. Size the width to what you're genuinely comfortable losing. Most traders target spreads no wider than 5–10% of the stock price.
• No exit plan before entry. Define your profit target (50% of credit) and your stop level (200% of credit) before you click the button. Decisions made under pressure during a fast-moving tape are almost always worse than decisions made in advance.
• Chasing premium with too-tight strikes. Placing your short put too close to the current stock price inflates your credit but dramatically increases the probability of loss. Use the delta of your short put as a guide — many traders target the 0.20–0.30 delta range for the short leg.

Bull Put Spread vs. Other Strategies

The bull put spread shines when you want to capture elevated IV premium without fully committing capital to 100 shares (cash-secured put) and without the unlimited upside — and downside — of a directional long call. It's the defined-risk, high-IV workhorse of the options world.