MSA · MSA Safety Inc · Options Chain

Track MSA — free

$188.72 +0.03 (+0.02%) At close · Sep 8

S&P 400 member Russell 1000 member Rebalance outlook locked

Market Cap

$7.28B

38.58M

Options Chain

Underlying $188.72 · at close Sep 8, 2026 Options Calculator

Pull option chains with greeks and open interest through the options chain API or MCP →

Positioning

Sep 18, 2026 · 9 days to expiry · 52 contracts · mixed daily-bar sessions · Jan 15, 2026–Aug 28, 2026; 30 unknown

Put / call OI

1.03

Balanced positioning

Open interest

132

as of Sep 4, 2026

Volume

—

dated and unknown daily-bar sessions

Max pain

$165.00

$23.72 below spot

ATM implied vol

22.6%

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

250

260

270

Chain

Click any strike for greeks, breakeven and the calculator

Expiry

Sep 18 9d Oct 16 37d Dec 18 100d Mar 19 191d

Calls								Puts
OI	Vol	IV	Δ	Bid	Ask	Last	Strike	Last	Bid	Ask	Δ	IV	Vol	OI
—	—	—	—	$76.80	$81.00	—		—	$0.00	$4.80	—	—	—	—
Call · $110 In the money Daily-bar session Unknown Quote as of 2026-09-08 19:57:40.877 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $110 Daily-bar session Unknown Quote as of 2026-09-08 13:35:35.804 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	—	—	$72.10	$76.00	—		—	$0.00	$4.80	—	—	—	—
Call · $115 In the money Daily-bar session Unknown Quote as of 2026-09-08 19:57:40.877 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $115 Daily-bar session Unknown Quote as of 2026-09-08 18:48:43.942 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	—	—	$66.80	$71.10	—		$0.95	$0.00	$4.80	—	—	1	3
Call · $120 In the money Daily-bar session Unknown Quote as of 2026-09-08 19:55:13.033 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $120 Daily-bar session Apr 9, 2026 Quote as of 2026-09-08 19:10:39.061 UTC Last $0.95 Breakeven $119.05 Implied vol — Delta — Gamma — Theta — Vega — Open interest 3 OI effective date Sep 4, 2026 Model this put
—	—	—	—	$61.90	$66.20	—		$0.85	$0.00	$4.80	—	—	1	5
Call · $125 In the money Daily-bar session Unknown Quote as of 2026-09-08 19:55:12.851 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $125 Daily-bar session May 13, 2026 Quote as of 2026-09-08 19:55:01.209 UTC Last $0.85 Breakeven $124.15 Implied vol — Delta — Gamma — Theta — Vega — Open interest 5 OI effective date Sep 4, 2026 Model this put
—	—	—	—	$57.00	$61.50	—		$1.35	$0.00	$0.75	—	—	1	7
Call · $130 In the money Daily-bar session Unknown Quote as of 2026-09-08 19:55:12.609 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $130 Daily-bar session Jun 2, 2026 Quote as of 2026-09-08 13:30:03.706 UTC Last $1.35 Breakeven $128.65 Implied vol — Delta — Gamma — Theta — Vega — Open interest 7 OI effective date Sep 4, 2026 Model this put
—	—	—	—	$52.70	$56.50	—		$1.30	$0.00	$4.80	—	—	1	7
Call · $135 In the money Daily-bar session Unknown Quote as of 2026-09-08 19:55:08.722 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $135 Daily-bar session May 15, 2026 Quote as of 2026-09-08 19:55:01.209 UTC Last $1.30 Breakeven $133.70 Implied vol — Delta — Gamma — Theta — Vega — Open interest 7 OI effective date Sep 4, 2026 Model this put
—	—	—	—	$47.20	$51.50	—		$2.30	$0.00	$4.80	—	—	2	8
Call · $140 In the money Daily-bar session Unknown Quote as of 2026-09-08 19:55:11.985 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $140 Daily-bar session Mar 6, 2026 Quote as of 2026-09-08 19:55:01.209 UTC Last $2.30 Breakeven $137.70 Implied vol — Delta — Gamma — Theta — Vega — Open interest 8 OI effective date Sep 4, 2026 Model this put
—	—	102.2%	0.958	$42.30	$46.50	—		$2.20	$0.00	$4.80	—	—	1	3
Call · $145 In the money Daily-bar session Unknown Quote as of 2026-09-08 19:55:11.544 UTC Last — Breakeven — Implied vol 102.2% Delta 0.958 ≈96% ITM Gamma 0.003 Theta -0.164 Vega 0.027 Open interest — OI effective date — Model this call Put · $145 Daily-bar session Feb 27, 2026 Quote as of 2026-09-08 19:55:01.209 UTC Last $2.20 Breakeven $142.80 Implied vol — Delta — Gamma — Theta — Vega — Open interest 3 OI effective date Sep 4, 2026 Model this put
—	—	96%	0.946	$37.60	$41.50	—		—	$0.00	$4.80	—	—	—	—
Call · $150 In the money Daily-bar session Unknown Quote as of 2026-09-08 19:55:08.723 UTC Last — Breakeven — Implied vol 96% Delta 0.946 ≈95% ITM Gamma 0.004 Theta -0.188 Vega 0.033 Open interest — OI effective date — Model this call Put · $150 Daily-bar session Unknown Quote as of 2026-09-08 19:55:01.209 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	78.7%	0.952	$32.20	$36.50	—		$7.77	$0.00	$4.80	—	—	10	10
Call · $155 In the money Daily-bar session Unknown Quote as of 2026-09-08 19:55:10.227 UTC Last — Breakeven — Implied vol 78.7% Delta 0.952 ≈95% ITM Gamma 0.004 Theta -0.144 Vega 0.03 Open interest — OI effective date — Model this call Put · $155 Daily-bar session Apr 6, 2026 Quote as of 2026-09-08 19:55:01.938 UTC Last $7.77 Breakeven $147.23 Implied vol — Delta — Gamma — Theta — Vega — Open interest 10 OI effective date Sep 4, 2026 Model this put
—	—	68.2%	0.946	$27.20	$31.50	—		$11.70	$0.00	$4.80	—	—	1	1
Call · $160 In the money Daily-bar session Unknown Quote as of 2026-09-08 19:55:09.289 UTC Last — Breakeven — Implied vol 68.2% Delta 0.946 ≈95% ITM Gamma 0.006 Theta -0.139 Vega 0.033 Open interest — OI effective date — Model this call Put · $160 Daily-bar session Mar 30, 2026 Quote as of 2026-09-08 19:55:01.575 UTC Last $11.70 Breakeven $148.30 Implied vol — Delta — Gamma — Theta — Vega — Open interest 1 OI effective date Sep 4, 2026 Model this put
14	10	57.8%	0.938	$22.40	$26.30	$14.64		$0.70	$0.00	$4.80	—	—	10	21
Call · $165 In the money Daily-bar session Apr 6, 2026 Quote as of 2026-09-08 19:55:02.126 UTC Last $14.64 Breakeven $179.64 Implied vol 57.8% Delta 0.938 ≈94% ITM Gamma 0.007 Theta -0.132 Vega 0.036 Open interest 14 OI effective date Sep 4, 2026 Model this call Put · $165 Daily-bar session Aug 4, 2026 Quote as of 2026-09-08 19:55:01.575 UTC Last $0.70 Breakeven $164.30 Implied vol — Delta — Gamma — Theta — Vega — Open interest 21 OI effective date Sep 4, 2026 Model this put
1	1	49.8%	0.917	$17.40	$21.50	$9.65		$1.00	$0.00	$4.80	—	—	3	1
Call · $170 In the money Daily-bar session Jul 6, 2026 Quote as of 2026-09-08 19:56:08.741 UTC Last $9.65 Breakeven $179.65 Implied vol 49.8% Delta 0.917 ≈92% ITM Gamma 0.01 Theta -0.141 Vega 0.045 Open interest 1 OI effective date Sep 4, 2026 Model this call Put · $170 Daily-bar session Jul 31, 2026 Quote as of 2026-09-08 19:55:01.349 UTC Last $1.00 Breakeven $169.00 Implied vol — Delta — Gamma — Theta — Vega — Open interest 1 OI effective date Sep 4, 2026 Model this put
10	10	41%	0.889	$12.60	$16.50	$9.83		$2.75	$0.00	$4.80	—	—	1	1
Call · $175 In the money Daily-bar session Apr 6, 2026 Quote as of 2026-09-08 19:59:59.360 UTC Last $9.83 Breakeven $184.83 Implied vol 41% Delta 0.889 ≈89% ITM Gamma 0.016 Theta -0.143 Vega 0.056 Open interest 10 OI effective date Sep 4, 2026 Model this call Put · $175 Daily-bar session Jul 31, 2026 Quote as of 2026-09-08 19:55:01.349 UTC Last $2.75 Breakeven $172.25 Implied vol — Delta — Gamma — Theta — Vega — Open interest 1 OI effective date Sep 4, 2026 Model this put
—	—	31.1%	0.844	$7.70	$11.60	—		—	$0.00	$4.80	—	—	—	—
Call · $180 In the money Daily-bar session Unknown Quote as of 2026-09-08 19:55:04.068 UTC Last — Breakeven — Implied vol 31.1% Delta 0.844 ≈84% ITM Gamma 0.026 Theta -0.137 Vega 0.071 Open interest — OI effective date — Model this call Put · $180 Daily-bar session Unknown Quote as of 2026-09-08 19:55:39.676 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
2	1	23.8%	0.718	$3.00	$7.30	$3.50		—	$0.05	$4.90	-0.343	35.3%	—	—
Call · $185 In the money Daily-bar session Jul 6, 2026 Quote as of 2026-09-08 19:59:59.360 UTC Last $3.50 Breakeven $188.50 Implied vol 23.8% Delta 0.718 ≈72% ITM Gamma 0.048 Theta -0.146 Vega 0.1 Open interest 2 OI effective date Sep 4, 2026 Model this call Put · $185 Daily-bar session Unknown Quote as of 2026-09-08 19:55:01.326 UTC Last — Breakeven — Implied vol 35.3% Delta -0.343 ≈34% ITM Gamma 0.035 Theta -0.207 Vega 0.109 Open interest — OI effective date — Model this put
Underlying $188.72
15	1	25.7%	0.45	$0.15	$4.90	$3.29		—	$0.90	$4.90	-0.57	19.4%	—	—
Call · $190 Daily-bar session Aug 28, 2026 Quote as of 2026-09-08 19:55:08.478 UTC Last $3.29 Breakeven $193.29 Implied vol 25.7% Delta 0.45 ≈45% ITM Gamma 0.052 Theta -0.176 Vega 0.117 Open interest 15 OI effective date Sep 4, 2026 Model this call Put · $190 In the money Daily-bar session Unknown Quote as of 2026-09-08 19:55:01.938 UTC Last — Breakeven — Implied vol 19.4% Delta -0.57 ≈57% ITM Gamma 0.068 Theta -0.115 Vega 0.116 Open interest — OI effective date — Model this put
1	1	—	—	$0.00	$4.80	$1.30		—	$4.60	$8.00	-0.906	15.3%	—	—
Call · $195 Daily-bar session Aug 26, 2026 Quote as of 2026-09-08 19:55:01.326 UTC Last $1.30 Breakeven $196.30 Implied vol — Delta — Gamma — Theta — Vega — Open interest 1 OI effective date Sep 4, 2026 Model this call Put · $195 In the money Daily-bar session Unknown Quote as of 2026-09-08 19:55:01.349 UTC Last — Breakeven — Implied vol 15.3% Delta -0.906 ≈91% ITM Gamma 0.037 Theta -0.024 Vega 0.05 Open interest — OI effective date — Model this put
2	1	—	—	$0.00	$1.05	$3.70		—	$9.00	$12.80	—	—	—	—
Call · $200 Daily-bar session Aug 4, 2026 Quote as of 2026-09-08 19:55:03.312 UTC Last $3.70 Breakeven $203.70 Implied vol — Delta — Gamma — Theta — Vega — Open interest 2 OI effective date Sep 4, 2026 Model this call Put · $200 In the money Daily-bar session Unknown Quote as of 2026-09-08 19:56:47.134 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
9	32	—	—	$0.00	$4.80	$0.47		—	$19.00	$22.80	—	—	—	—
Call · $210 Daily-bar session Aug 14, 2026 Quote as of 2026-09-08 19:55:03.897 UTC Last $0.47 Breakeven $210.47 Implied vol — Delta — Gamma — Theta — Vega — Open interest 9 OI effective date Sep 4, 2026 Model this call Put · $210 In the money Daily-bar session Unknown Quote as of 2026-09-08 19:59:58.853 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
1	—	—	—	$0.00	$4.80	—		—	$29.00	$32.50	—	—	—	—
Call · $220 Daily-bar session Unknown Quote as of 2026-09-08 19:55:01.938 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 1 OI effective date Sep 4, 2026 Model this call Put · $220 In the money Daily-bar session Unknown Quote as of 2026-09-08 19:59:58.853 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
8	7	—	—	$0.00	$4.80	$0.30		—	$39.00	$43.00	—	—	—	—
Call · $230 Daily-bar session Jun 23, 2026 Quote as of 2026-09-08 19:55:01.964 UTC Last $0.30 Breakeven $230.30 Implied vol — Delta — Gamma — Theta — Vega — Open interest 8 OI effective date Sep 4, 2026 Model this call Put · $230 In the money Daily-bar session Unknown Quote as of 2026-09-08 19:57:07.125 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
1	1	—	—	$0.00	$4.80	$1.55		—	$49.00	$52.80	—	—	—	—
Call · $240 Daily-bar session Jan 15, 2026 Quote as of 2026-09-08 19:55:02.067 UTC Last $1.55 Breakeven $241.55 Implied vol — Delta — Gamma — Theta — Vega — Open interest 1 OI effective date Sep 4, 2026 Model this call Put · $240 In the money Daily-bar session Unknown Quote as of 2026-09-08 19:57:07.125 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
1	1	—	—	$0.00	$4.80	$2.45		—	$59.00	$63.00	—	—	—	—
Call · $250 Daily-bar session Feb 27, 2026 Quote as of 2026-09-08 19:55:08.744 UTC Last $2.45 Breakeven $252.45 Implied vol — Delta — Gamma — Theta — Vega — Open interest 1 OI effective date Sep 4, 2026 Model this call Put · $250 In the money Daily-bar session Unknown Quote as of 2026-09-08 19:57:07.125 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$4.80	—		—	$69.00	$72.60	—	—	—	—
Call · $260 Daily-bar session Unknown Quote as of 2026-09-08 19:55:09.747 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $260 In the money Daily-bar session Unknown Quote as of 2026-09-08 19:59:58.853 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$4.80	—		—	$79.00	$82.90	—	—	—	—
Call · $270 Daily-bar session Unknown Quote as of 2026-09-08 19:55:02.308 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $270 In the money Daily-bar session Unknown Quote as of 2026-09-08 19:57:07.125 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put

About this data

Each contract's last price, day range and volume belong to the daily-bar session shown in its details; unknown means the source omitted that timestamp. Open interest has its own effective date shown separately; implied volatility and greeks are model values computed when fetched. This chain has mixed daily-bar sessions · Jan 15, 2026–Aug 28, 2026; 30 unknown. Positioning totals are shown only when every returned open-interest value has the same known effective date. Bid and ask are real-time consolidated OPRA readings.

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) 261 filings 257 filers Visit website Investor relations