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The bull put spread, leg by leg, with two real trades

The hedg3 Team

A bull put spread is two puts on one expiry: one sold, and one bought at a lower strike to cap the loss. It opens for a credit and keeps all of it when the stock finishes above the sold strike. The gap between the two strikes is the wing: $95 to $90 is $5 a share, $500 on 100 shares.

Bull put spread

CreditSpread Agent
Bull put spread at expiry: S 95P, B 90PS 95PB 90P$0−$400−$300−$200−$100+$100+$200+$100−$400Target +$50BE $94XYZ today $100P&L AT EXPIRYMax −$400LossMax +$100SHARES IF HELD THROUGH EXPIRYNo sharesOwn 100 sh ($9,500)No shares$85$90$95$100$105
Net credit $100

The numbers at expiry

  • Max profit: $100, the credit, with XYZ above $95.
  • Max loss: $400 below $90: the $500 wing less the $100 credit.
  • Breakeven: $94: the 95 strike less the $1 credit.
  • Collateral: $400 held at entry.

Why the max loss is $400

Two numbers set it: the credit and the wing. The 95 put brings in $160 and the 90 put costs $60, so the spread opens for a $100 credit. Below $90 the 95 put is assigned and the 90 put is exercised: 100 shares bought at $95 and sold at $90, a $500 loss, the full wing. The $100 credit is kept.

Premium at the open
Sell the 95 put+$160
Buy the 90 put−$60
Net credit+$100
Worst case at expiry: XYZ below $90
95 put assigned: buy 100 XYZ at $95−$9,500
90 put exercised: sell 100 XYZ at $90+$9,000
Credit kept from the open+$100
Max loss−$400
Formula$500 wing, less the $100 credit = −$400Wing: the gap between the sold and bought strike, $95 to $90 on 100 shares.

Where assignment happens

Between $90 and $95 the 95 put is assigned and the 90 put expires: you own 100 shares at $95, $9,500. Below $90 both puts are exercised, the shares net out, and the loss is the $400 maximum. Closing before expiry avoids the zone.

Winner: MARA, Sep 3 to Sep 8

Winner

MARA bull put spread

Sep 18, 2026 expirySpread AgentTrade detail →
MARA Bull put spread: B 9P, S 9.5P, closed with a gain of $2.50B 9PS 9.5P$0+$5−$45Target +$2.50BE $9.45Open $11.435Closed +$2.50$8$9$10$11$12$13
Legs
LegContractPrice
BuyMARA 9 put$0.075
SellMARA 9.5 put$0.125
Opened
Sep 3, 2026, 1:00 PM ET · MARA $11.435
Net credit
$0.05 · $5 received
Target
Buy back at $0.025 · +$2.50
Stop
$0.10
Closed
Sep 8, 2026, 11:42 AM ET · MARA $11.83
How
Target hit
Result
+$2.50
Max loss
−$45
Return on max loss
+5.6%

MARA was at $11.435, $1.935 above the 9.5 sold put, when the spread opened for a $0.05 credit. MARA rose to $11.83, and the target bought the spread back at $0.025 on Sep 8: +$2.50 on $45 at risk.

Loser: NFLX, Sep 4 to Sep 8

Loser

NFLX bull put spread

Sep 18, 2026 expirySpread AgentTrade detail →
NFLX Bull put spread: B 80P, S 81P, closed with a loss of $39.50B 80PS 81P$0+$60.50−$39.50Target +$30.25BE $80.40Open $79.15Closed −$39.50$74$76$78$80$82$84
Legs
LegContractPrice
BuyNFLX 80 put$2.18
SellNFLX 81 put$2.785
Opened
Sep 4, 2026, 12:00 PM ET · NFLX $79.15
Net credit
$0.605 · $60.50 received
Target
Buy back at $0.3025 · +$30.25
Stop
$1.00
Closed
Sep 8, 2026, 10:50 AM ET · NFLX $76.71
How
Price stop
Result
−$39.50
Max loss
−$39.50
Return on max loss
−100%

NFLX was at $79.15, already under both strikes, when the spread opened for $0.605 of its $1 width. NFLX fell to $76.71, the spread reached its full $1 width, and the price stop closed it on Sep 8: −$39.50, the whole max loss.

Every trade, on the record

The two trades above are the Spread Agent's most recent settled winner and loser. Every bull put spread it closes, winners and losers, is on the public track record.

The full strategy page covers the Greeks and when it is used: bull put spread.

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