POST · Post Holdings, Inc.

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$91.31 +0.40 (+0.44%) At close · Jul 27

Market Cap

$4.12B

45.32M

Options Chain

15-min delayed Underlying $91.31 · at close Jul 27, 2026 Options Calculator

Positioning

Aug 21, 2026 · 24 days to expiry · 36 contracts

Put / call OI

1.74

Put-heavy positioning

Open interest

118

contracts outstanding

Volume

traded today

Max pain

$90.00

$1.31 below spot

ATM implied vol

41.3%

market's expected move

Open interest by strike

Calls Puts

100

105

110

115

120

125

130

135

Chain

Click any strike for greeks, breakeven and the calculator

Expiry

Aug 21 24d Sep 18 52d Dec 18 143d Mar 19 234d Dec 17 507d

Calls						Puts
OI	Vol	IV	Δ	Last	Strike	Last	Δ	IV	Vol	OI
0	—	110.3%	0.989	—		$0.05	-0.008	105.4%	1	20
Call · $50 In the money Last — Breakeven — Implied vol 110.3% Delta 0.989 ≈99% ITM Gamma 0.001 Theta -0.021 Vega 0.009 Open interest 0 Model this call Put · $50 Last $0.05 Breakeven $49.95 Implied vol 105.4% Delta -0.008 ≈1% ITM Gamma 0.001 Theta -0.011 Vega 0.004 Open interest 20 Model this put
0	—	104%	0.98	—		—	-0.067	150.1%	—	0
Call · $55 In the money Last — Breakeven — Implied vol 104% Delta 0.98 ≈98% ITM Gamma 0.002 Theta -0.03 Vega 0.009 Open interest 0 Model this call Put · $55 Last — Breakeven — Implied vol 150.1% Delta -0.067 ≈7% ITM Gamma 0.004 Theta -0.093 Vega 0.032 Open interest 0 Model this put
0	—	90.7%	0.973	—		—	-0.079	130.9%	—	0
Call · $60 In the money Last — Breakeven — Implied vol 90.7% Delta 0.973 ≈97% ITM Gamma 0.003 Theta -0.033 Vega 0.019 Open interest 0 Model this call Put · $60 Last — Breakeven — Implied vol 130.9% Delta -0.079 ≈8% ITM Gamma 0.005 Theta -0.092 Vega 0.033 Open interest 0 Model this put
2	2	79.8%	0.961	$23.55		—	-0.046	84.5%	—	0
Call · $65 In the money Last $23.55 Breakeven $88.55 Implied vol 79.8% Delta 0.961 ≈96% ITM Gamma 0.004 Theta -0.039 Vega 0.02 Open interest 2 Model this call Put · $65 Last — Breakeven — Implied vol 84.5% Delta -0.046 ≈5% ITM Gamma 0.005 Theta -0.039 Vega 0.02 Open interest 0 Model this put
0	—	69.7%	0.945	—		$0.75	-0.056	70%	1	1
Call · $70 In the money Last — Breakeven — Implied vol 69.7% Delta 0.945 ≈94% ITM Gamma 0.007 Theta -0.044 Vega 0.021 Open interest 0 Model this call Put · $70 Last $0.75 Breakeven $69.25 Implied vol 70% Delta -0.056 ≈6% ITM Gamma 0.007 Theta -0.038 Vega 0.036 Open interest 1 Model this put
0	—	59.5%	0.914	—		$0.12	-0.126	73.3%	1	17
Call · $75 In the money Last — Breakeven — Implied vol 59.5% Delta 0.914 ≈91% ITM Gamma 0.011 Theta -0.052 Vega 0.037 Open interest 0 Model this call Put · $75 Last $0.12 Breakeven $74.88 Implied vol 73.3% Delta -0.126 ≈13% ITM Gamma 0.012 Theta -0.072 Vega 0.056 Open interest 17 Model this put
0	—	51.3%	0.859	—		$1.10	-0.182	62.6%	1	13
Call · $80 In the money Last — Breakeven — Implied vol 51.3% Delta 0.859 ≈86% ITM Gamma 0.018 Theta -0.062 Vega 0.058 Open interest 0 Model this call Put · $80 Last $1.10 Breakeven $78.90 Implied vol 62.6% Delta -0.182 ≈18% ITM Gamma 0.018 Theta -0.079 Vega 0.058 Open interest 13 Model this put
0	—	44.6%	0.757	—		$2.73	-0.223	40.2%	1	13
Call · $85 In the money Last — Breakeven — Implied vol 44.6% Delta 0.757 ≈76% ITM Gamma 0.03 Theta -0.074 Vega 0.078 Open interest 0 Model this call Put · $85 Last $2.73 Breakeven $82.27 Implied vol 40.2% Delta -0.223 ≈22% ITM Gamma 0.032 Theta -0.057 Vega 0.078 Open interest 13 Model this put
17	1	41.6%	0.583	$4.30		$5.65	-0.418	41%	1	11
Call · $90 In the money Last $4.30 Breakeven $94.30 Implied vol 41.6% Delta 0.583 ≈58% ITM Gamma 0.04 Theta -0.084 Vega 0.093 Open interest 17 Model this call Put · $90 Last $5.65 Breakeven $84.35 Implied vol 41% Delta -0.418 ≈42% ITM Gamma 0.041 Theta -0.074 Vega 0.093 Open interest 11 Model this put
Underlying $91.31
13	1	39.4%	0.376	$2.00		—	-0.623	40.7%	—	0
Call · $95 Last $2.00 Breakeven $97.00 Implied vol 39.4% Delta 0.376 ≈38% ITM Gamma 0.041 Theta -0.077 Vega 0.084 Open interest 13 Model this call Put · $95 In the money Last — Breakeven — Implied vol 40.7% Delta -0.623 ≈62% ITM Gamma 0.041 Theta -0.071 Vega 0.084 Open interest 0 Model this put
0	—	49.5%	0.264	—		—	-0.776	42.9%	—	0
Call · $100 Last — Breakeven — Implied vol 49.5% Delta 0.264 ≈26% ITM Gamma 0.028 Theta -0.082 Vega 0.087 Open interest 0 Model this call Put · $100 In the money Last — Breakeven — Implied vol 42.9% Delta -0.776 ≈78% ITM Gamma 0.031 Theta -0.057 Vega 0.066 Open interest 0 Model this put
11	10	54.7%	0.185	$0.60		—	-0.864	47.4%	—	0
Call · $105 Last $0.60 Breakeven $105.60 Implied vol 54.7% Delta 0.185 ≈19% ITM Gamma 0.021 Theta -0.072 Vega 0.068 Open interest 11 Model this call Put · $105 In the money Last — Breakeven — Implied vol 47.4% Delta -0.864 ≈86% ITM Gamma 0.021 Theta -0.045 Vega 0.045 Open interest 0 Model this put
0	—	50.6%	0.089	—		—	-0.988	37%	—	0
Call · $110 Last — Breakeven — Implied vol 50.6% Delta 0.089 ≈9% ITM Gamma 0.014 Theta -0.04 Vega 0.047 Open interest 0 Model this call Put · $110 In the money Last — Breakeven — Implied vol 37% Delta -0.988 ≈99% ITM Gamma 0.008 Theta -0.004 Vega 0.007 Open interest 0 Model this put
0	—	95.2%	0.213	—		—	-0.943	55.8%	—	0
Call · $115 Last — Breakeven — Implied vol 95.2% Delta 0.213 ≈21% ITM Gamma 0.013 Theta -0.135 Vega 0.071 Open interest 0 Model this call Put · $115 In the money Last — Breakeven — Implied vol 55.8% Delta -0.943 ≈94% ITM Gamma 0.01 Theta -0.025 Vega 0.025 Open interest 0 Model this put
0	—	103.6%	0.191	—		—	—	—	—	0
Call · $120 Last — Breakeven — Implied vol 103.6% Delta 0.191 ≈19% ITM Gamma 0.011 Theta -0.138 Vega 0.072 Open interest 0 Model this call Put · $120 In the money Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	—	—	—		—	—	—	—	0
Call · $125 Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $125 In the money Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	—	—	—		—	—	—	—	0
Call · $130 Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $130 In the money Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	—	—	—		—	—	—	—	0
Call · $135 Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $135 In the money Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put

About this data

Greeks, implied volatility, open interest and the last price come from the latest daily snapshot and are 15-minute delayed. Bid and ask are not included on this plan.

In-the-money strikes are tinted, deepening toward the money, and the bar beside each open-interest figure scales to the heaviest strike shown. Max pain is the listed strike where the most open interest would expire worthless — a positioning reference, not a forecast.

Key facts CIK 1530950 CUSIP 737446104 13F (30d) 88 filings 87 filers Visit website Investor relations