MSA · MSA Safety Inc

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$174.64 +0.58 (+0.33%) At close · Jul 24

Market Cap

$6.74B

38.60M

Options Chain

15-min delayed Underlying $174.64 · at close Jul 24, 2026 Options Calculator

Positioning

Aug 21, 2026 · 26 days to expiry · 46 contracts

Put / call OI

3.00

Put-heavy positioning

Open interest

contracts outstanding

Volume

traded today

Max pain

$175.00

$0.36 above spot

ATM implied vol

30.1%

market's expected move

Open interest by strike

Calls Puts

110

115

120

125

130

135

140

145

150

155

160

165

170

175

180

185

190

195

200

210

220

230

240

Chain

Click any strike for greeks, breakeven and the calculator

Expiry

Aug 21 26d Sep 18 54d Dec 18 145d Mar 19 236d

Calls						Puts
OI	Vol	IV	Δ	Last	Strike	Last	Δ	IV	Vol	OI
0	—	91.2%	0.978	—		—	—	—	—	0
Call · $110 In the money Last — Breakeven — Implied vol 91.2% Delta 0.978 ≈98% ITM Gamma 0.001 Theta -0.046 Vega 0.019 Open interest 0 Model this call Put · $110 Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	83.2%	0.977	—		—	—	—	—	0
Call · $115 In the money Last — Breakeven — Implied vol 83.2% Delta 0.977 ≈98% ITM Gamma 0.001 Theta -0.045 Vega 0.019 Open interest 0 Model this call Put · $115 Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	76.9%	0.973	—		—	—	—	—	0
Call · $120 In the money Last — Breakeven — Implied vol 76.9% Delta 0.973 ≈97% ITM Gamma 0.002 Theta -0.047 Vega 0.039 Open interest 0 Model this call Put · $120 Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	71.6%	0.966	—		—	—	—	—	0
Call · $125 In the money Last — Breakeven — Implied vol 71.6% Delta 0.966 ≈97% ITM Gamma 0.002 Theta -0.053 Vega 0.04 Open interest 0 Model this call Put · $125 Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	62.9%	0.966	—		—	-0.033	63%	—	0
Call · $130 In the money Last — Breakeven — Implied vol 62.9% Delta 0.966 ≈97% ITM Gamma 0.002 Theta -0.047 Vega 0.041 Open interest 0 Model this call Put · $130 Last — Breakeven — Implied vol 63% Delta -0.033 ≈3% ITM Gamma 0.002 Theta -0.041 Vega 0.041 Open interest 0 Model this put
0	—	56.9%	0.96	—		—	-0.037	56.1%	—	0
Call · $135 In the money Last — Breakeven — Implied vol 56.9% Delta 0.96 ≈96% ITM Gamma 0.003 Theta -0.049 Vega 0.042 Open interest 0 Model this call Put · $135 Last — Breakeven — Implied vol 56.1% Delta -0.037 ≈4% ITM Gamma 0.003 Theta -0.04 Vega 0.042 Open interest 0 Model this put
0	—	51.1%	0.953	—		$1.25	-0.042	49.5%	1	1
Call · $140 In the money Last — Breakeven — Implied vol 51.1% Delta 0.953 ≈95% ITM Gamma 0.004 Theta -0.051 Vega 0.042 Open interest 0 Model this call Put · $140 Last $1.25 Breakeven $138.75 Implied vol 49.5% Delta -0.042 ≈4% ITM Gamma 0.004 Theta -0.038 Vega 0.042 Open interest 1 Model this put
0	—	50.1%	0.926	—		$1.80	-0.047	43.1%	1	1
Call · $145 In the money Last — Breakeven — Implied vol 50.1% Delta 0.926 ≈93% ITM Gamma 0.006 Theta -0.069 Vega 0.075 Open interest 0 Model this call Put · $145 Last $1.80 Breakeven $143.20 Implied vol 43.1% Delta -0.047 ≈5% ITM Gamma 0.005 Theta -0.037 Vega 0.043 Open interest 1 Model this put
0	—	43.4%	0.914	—		$0.90	-0.059	38.1%	1	3
Call · $150 In the money Last — Breakeven — Implied vol 43.4% Delta 0.914 ≈91% ITM Gamma 0.008 Theta -0.068 Vega 0.076 Open interest 0 Model this call Put · $150 Last $0.90 Breakeven $149.10 Implied vol 38.1% Delta -0.059 ≈6% ITM Gamma 0.007 Theta -0.039 Vega 0.044 Open interest 3 Model this put
0	—	40.5%	0.879	—		$1.45	-0.086	33.9%	1	3
Call · $155 In the money Last — Breakeven — Implied vol 40.5% Delta 0.879 ≈88% ITM Gamma 0.011 Theta -0.081 Vega 0.116 Open interest 0 Model this call Put · $155 Last $1.45 Breakeven $153.55 Implied vol 33.9% Delta -0.086 ≈9% ITM Gamma 0.01 Theta -0.046 Vega 0.077 Open interest 3 Model this put
0	—	37.9%	0.821	—		$2.00	-0.155	33.9%	1	1
Call · $160 In the money Last — Breakeven — Implied vol 37.9% Delta 0.821 ≈82% ITM Gamma 0.015 Theta -0.096 Vega 0.118 Open interest 0 Model this call Put · $160 Last $2.00 Breakeven $158.00 Implied vol 33.9% Delta -0.155 ≈15% ITM Gamma 0.015 Theta -0.07 Vega 0.118 Open interest 1 Model this put
0	—	32.8%	0.759	—		—	-0.249	34.1%	—	0
Call · $165 In the money Last — Breakeven — Implied vol 32.8% Delta 0.759 ≈76% ITM Gamma 0.02 Theta -0.098 Vega 0.157 Open interest 0 Model this call Put · $165 Last — Breakeven — Implied vol 34.1% Delta -0.249 ≈25% ITM Gamma 0.02 Theta -0.093 Vega 0.157 Open interest 0 Model this put
0	—	31.7%	0.647	—		—	-0.314	23.2%	—	0
Call · $170 In the money Last — Breakeven — Implied vol 31.7% Delta 0.647 ≈65% ITM Gamma 0.025 Theta -0.112 Vega 0.183 Open interest 0 Model this call Put · $170 Last — Breakeven — Implied vol 23.2% Delta -0.314 ≈31% ITM Gamma 0.033 Theta -0.07 Vega 0.16 Open interest 0 Model this put
Underlying $174.64
1	1	30.7%	0.515	$4.19		—	-0.488	29.5%	—	0
Call · $175 Last $4.19 Breakeven $179.19 Implied vol 30.7% Delta 0.515 ≈51% ITM Gamma 0.028 Theta -0.115 Vega 0.187 Open interest 1 Model this call Put · $175 In the money Last — Breakeven — Implied vol 29.5% Delta -0.488 ≈49% ITM Gamma 0.029 Theta -0.1 Vega 0.187 Open interest 0 Model this put
0	—	31.3%	0.383	—		—	-0.646	26.3%	—	0
Call · $180 Last — Breakeven — Implied vol 31.3% Delta 0.383 ≈38% ITM Gamma 0.026 Theta -0.112 Vega 0.191 Open interest 0 Model this call Put · $180 In the money Last — Breakeven — Implied vol 26.3% Delta -0.646 ≈65% ITM Gamma 0.031 Theta -0.081 Vega 0.168 Open interest 0 Model this put
1	1	34%	0.288	$1.15		—	-0.775	26.8%	—	0
Call · $185 Last $1.15 Breakeven $186.15 Implied vol 34% Delta 0.288 ≈29% ITM Gamma 0.021 Theta -0.106 Vega 0.17 Open interest 1 Model this call Put · $185 In the money Last — Breakeven — Implied vol 26.8% Delta -0.775 ≈78% ITM Gamma 0.025 Theta -0.064 Vega 0.13 Open interest 0 Model this put
0	—	23.9%	0.107	—		—	-0.931	21.8%	—	0
Call · $190 Last — Breakeven — Implied vol 23.9% Delta 0.107 ≈11% ITM Gamma 0.016 Theta -0.04 Vega 0.09 Open interest 0 Model this call Put · $190 In the money Last — Breakeven — Implied vol 21.8% Delta -0.931 ≈93% ITM Gamma 0.016 Theta -0.02 Vega 0.074 Open interest 0 Model this put
1	1	27.5%	0.074	$0.35		—	—	—	—	0
Call · $195 Last $0.35 Breakeven $195.35 Implied vol 27.5% Delta 0.074 ≈7% ITM Gamma 0.011 Theta -0.036 Vega 0.053 Open interest 1 Model this call Put · $195 In the money Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	32%	0.065	—		—	—	—	—	0
Call · $200 Last — Breakeven — Implied vol 32% Delta 0.065 ≈7% ITM Gamma 0.008 Theta -0.037 Vega 0.053 Open interest 0 Model this call Put · $200 In the money Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	—	—	—		—	—	—	—	0
Call · $210 Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $210 In the money Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	—	—	—		—	—	—	—	0
Call · $220 Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $220 In the money Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	—	—	—		—	—	—	—	0
Call · $230 Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $230 In the money Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	—	—	—		—	—	—	—	0
Call · $240 Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $240 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 66570 CUSIP 553498106 13F (30d) 89 filings 87 filers Visit website Investor relations