MRSH · Marsh & Mclennan Companies, Inc. · Options Chain

Track MRSH — free

$176.91 -0.38 (-0.21%) At close · Sep 11

S&P 500 member Russell 1000 member Rebalance outlook locked

Market Cap

$84.42B

477.21M

Options Chain

Underlying $176.91 · at close Sep 11, 2026 Options Calculator

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

Positioning

Sep 18, 2026 · 5 days to expiry · 46 contracts · mixed daily-bar sessions · Jul 22, 2026–Sep 11, 2026; 27 unknown

Put / call OI

0.72

Balanced positioning

Open interest

3,357

as of Sep 10, 2026

Volume

—

dated and unknown daily-bar sessions

Max pain

$190.00

$13.09 above spot

ATM implied vol

25.4%

market's expected move

Open interest by strike

Calls Puts

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 5d Oct 16 33d Jan 15 124d Mar 19 187d Apr 16 215d Jan 21 495d

Calls								Puts
OI	Vol	IV	Δ	Bid	Ask	Last	Strike	Last	Bid	Ask	Δ	IV	Vol	OI
—	—	—	—	$50.40	$53.10	—		—	$0.00	$2.15	—	—	—	—
Call · $125 In the money Daily-bar session Unknown Quote as of 2026-09-11 19:59:59.946 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $125 Daily-bar session Unknown Quote as of 2026-09-11 19:59:59.453 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	—	—	$45.40	$48.30	—		—	$0.00	$2.15	—	—	—	—
Call · $130 In the money Daily-bar session Unknown Quote as of 2026-09-11 19:59:59.727 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $130 Daily-bar session Unknown Quote as of 2026-09-11 19:59:59.453 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	—	—	$40.40	$43.60	—		—	$0.00	$1.40	—	—	—	—
Call · $135 In the money Daily-bar session Unknown Quote as of 2026-09-11 19:59:59.817 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $135 Daily-bar session Unknown Quote as of 2026-09-11 19:59:59.453 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	—	—	$35.40	$38.10	—		$0.55	$0.00	$2.15	—	—	10	10
Call · $140 In the money Daily-bar session Unknown Quote as of 2026-09-11 19:59:59.974 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $140 Daily-bar session Jul 29, 2026 Quote as of 2026-09-11 19:58:45.087 UTC Last $0.55 Breakeven $139.45 Implied vol — Delta — Gamma — Theta — Vega — Open interest 10 OI effective date Sep 10, 2026 Model this put
2	2	—	—	$30.40	$33.20	$31.57		—	$0.00	$2.15	—	—	—	—
Call · $145 In the money Daily-bar session Jul 22, 2026 Quote as of 2026-09-11 19:59:59.958 UTC Last $31.57 Breakeven $176.57 Implied vol — Delta — Gamma — Theta — Vega — Open interest 2 OI effective date Sep 10, 2026 Model this call Put · $145 Daily-bar session Unknown Quote as of 2026-09-11 19:59:59.453 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	78.5%	0.968	$25.40	$29.00	—		$0.51	$0.00	$2.15	—	—	1	1
Call · $150 In the money Daily-bar session Unknown Quote as of 2026-09-11 19:59:59.727 UTC Last — Breakeven — Implied vol 78.5% Delta 0.968 ≈97% ITM Gamma 0.005 Theta -0.133 Vega 0.015 Open interest — OI effective date — Model this call Put · $150 Daily-bar session Jul 24, 2026 Quote as of 2026-09-11 19:58:45.087 UTC Last $0.51 Breakeven $149.49 Implied vol — Delta — Gamma — Theta — Vega — Open interest 1 OI effective date Sep 10, 2026 Model this put
—	—	—	—	$20.40	$23.20	—		—	$0.00	$2.15	—	—	—	—
Call · $155 In the money Daily-bar session Unknown Quote as of 2026-09-11 19:59:59.727 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $155 Daily-bar session Unknown Quote as of 2026-09-11 19:58:45.087 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	32.2%	0.997	$16.00	$18.00	—		—	$0.00	$2.15	—	—	—	—
Call · $160 In the money Daily-bar session Unknown Quote as of 2026-09-11 19:59:59.727 UTC Last — Breakeven — Implied vol 32.2% Delta 0.997 ≈100% ITM Gamma 0.002 Theta -0.024 Vega 0.002 Open interest — OI effective date — Model this call Put · $160 Daily-bar session Unknown Quote as of 2026-09-11 19:58:45.087 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	42.5%	0.924	$11.10	$13.50	—		$2.45	$0.00	$2.00	—	—	5	5
Call · $165 In the money Daily-bar session Unknown Quote as of 2026-09-11 19:59:59.728 UTC Last — Breakeven — Implied vol 42.5% Delta 0.924 ≈92% ITM Gamma 0.016 Theta -0.141 Vega 0.03 Open interest — OI effective date — Model this call Put · $165 Daily-bar session Jul 22, 2026 Quote as of 2026-09-11 19:59:59.479 UTC Last $2.45 Breakeven $162.55 Implied vol — Delta — Gamma — Theta — Vega — Open interest 5 OI effective date Sep 10, 2026 Model this put
—	—	33.9%	0.851	$6.20	$8.90	—		$0.26	$0.00	$1.35	—	—	3	203
Call · $170 In the money Daily-bar session Unknown Quote as of 2026-09-11 19:59:59.455 UTC Last — Breakeven — Implied vol 33.9% Delta 0.851 ≈85% ITM Gamma 0.033 Theta -0.178 Vega 0.048 Open interest — OI effective date — Model this call Put · $170 Daily-bar session Sep 2, 2026 Quote as of 2026-09-11 19:59:28.359 UTC Last $0.26 Breakeven $169.74 Implied vol — Delta — Gamma — Theta — Vega — Open interest 203 OI effective date Sep 10, 2026 Model this put
4	3	29.5%	0.636	$2.40	$4.70	$18.67		$1.17	$0.05	$1.80	-0.319	21.3%	3	44
Call · $175 In the money Daily-bar session Aug 21, 2026 Quote as of 2026-09-11 19:59:44.387 UTC Last $18.67 Breakeven $193.67 Implied vol 29.5% Delta 0.636 ≈64% ITM Gamma 0.062 Theta -0.24 Vega 0.078 Open interest 4 OI effective date Sep 10, 2026 Model this call Put · $175 Daily-bar session Sep 11, 2026 Quote as of 2026-09-11 19:59:59.929 UTC Last $1.17 Breakeven $173.83 Implied vol 21.3% Delta -0.319 ≈32% ITM Gamma 0.081 Theta -0.151 Vega 0.074 Open interest 44 OI effective date Sep 10, 2026 Model this put
Underlying $176.91
16	14	28.9%	0.316	$0.80	$1.60	$0.92		$4.70	$3.60	$4.80	-0.684	29%	6	194
Call · $180 Daily-bar session Sep 11, 2026 Quote as of 2026-09-11 19:59:54.885 UTC Last $0.92 Breakeven $180.92 Implied vol 28.9% Delta 0.316 ≈32% ITM Gamma 0.059 Theta -0.219 Vega 0.074 Open interest 16 OI effective date Sep 10, 2026 Model this call Put · $180 In the money Daily-bar session Sep 11, 2026 Quote as of 2026-09-11 19:58:34.467 UTC Last $4.70 Breakeven $175.30 Implied vol 29% Delta -0.684 ≈68% ITM Gamma 0.059 Theta -0.2 Vega 0.074 Open interest 194 OI effective date Sep 10, 2026 Model this put
263	1	—	—	$0.00	$0.80	$0.40		$7.80	$7.00	$9.50	-0.906	28.4%	1k	438
Call · $185 Daily-bar session Sep 11, 2026 Quote as of 2026-09-11 19:59:59.712 UTC Last $0.40 Breakeven $185.40 Implied vol — Delta — Gamma — Theta — Vega — Open interest 263 OI effective date Sep 10, 2026 Model this call Put · $185 In the money Daily-bar session Sep 10, 2026 Quote as of 2026-09-11 19:59:59.457 UTC Last $7.80 Breakeven $177.20 Implied vol 28.4% Delta -0.906 ≈91% ITM Gamma 0.029 Theta -0.081 Vega 0.035 Open interest 438 OI effective date Sep 10, 2026 Model this put
343	5	—	—	$0.00	$0.40	$0.27		$12.85	$11.70	$14.20	—	—	12	407
Call · $190 Daily-bar session Sep 11, 2026 Quote as of 2026-09-11 19:59:59.712 UTC Last $0.27 Breakeven $190.27 Implied vol — Delta — Gamma — Theta — Vega — Open interest 343 OI effective date Sep 10, 2026 Model this call Put · $190 In the money Daily-bar session Sep 11, 2026 Quote as of 2026-09-11 19:59:59.457 UTC Last $12.85 Breakeven $177.15 Implied vol — Delta — Gamma — Theta — Vega — Open interest 407 OI effective date Sep 10, 2026 Model this put
279	4	47.8%	0.044	$0.05	$0.30	$0.10		$4.40	$16.70	$19.80	-0.942	51.7%	1	1
Call · $195 Daily-bar session Sep 10, 2026 Quote as of 2026-09-11 19:59:59.632 UTC Last $0.10 Breakeven $195.10 Implied vol 47.8% Delta 0.044 ≈4% ITM Gamma 0.009 Theta -0.093 Vega 0.019 Open interest 279 OI effective date Sep 10, 2026 Model this call Put · $195 In the money Daily-bar session Aug 26, 2026 Quote as of 2026-09-11 19:59:59.457 UTC Last $4.40 Breakeven $190.60 Implied vol 51.7% Delta -0.942 ≈94% ITM Gamma 0.011 Theta -0.105 Vega 0.024 Open interest 1 OI effective date Sep 10, 2026 Model this put
708	5	—	—	$0.00	$0.25	$0.10		$8.00	$21.90	$24.40	-0.964	56.9%	107	107
Call · $200 Daily-bar session Sep 9, 2026 Quote as of 2026-09-11 19:59:59.713 UTC Last $0.10 Breakeven $200.10 Implied vol — Delta — Gamma — Theta — Vega — Open interest 708 OI effective date Sep 10, 2026 Model this call Put · $200 In the money Daily-bar session Jul 29, 2026 Quote as of 2026-09-11 19:58:45.087 UTC Last $8.00 Breakeven $192.00 Implied vol 56.9% Delta -0.964 ≈96% ITM Gamma 0.007 Theta -0.073 Vega 0.016 Open interest 107 OI effective date Sep 10, 2026 Model this put
332	1	—	—	$0.00	$0.50	$0.09		$22.60	$32.20	$34.60	-0.944	88.8%	1	—
Call · $210 Daily-bar session Sep 11, 2026 Quote as of 2026-09-11 19:59:59.706 UTC Last $0.09 Breakeven $210.09 Implied vol — Delta — Gamma — Theta — Vega — Open interest 332 OI effective date Sep 10, 2026 Model this call Put · $210 In the money Daily-bar session Aug 17, 2026 Quote as of 2026-09-11 19:58:34.467 UTC Last $22.60 Breakeven $187.40 Implied vol 88.8% Delta -0.944 ≈94% ITM Gamma 0.006 Theta -0.186 Vega 0.023 Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$2.15	—		—	$41.30	$44.50	—	—	—	—
Call · $220 Daily-bar session Unknown Quote as of 2026-09-11 19:59:59.458 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $220 In the money Daily-bar session Unknown Quote as of 2026-09-11 19:59:05.717 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$2.15	—		—	$51.60	$54.80	—	—	—	—
Call · $230 Daily-bar session Unknown Quote as of 2026-09-11 19:59:50.840 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $230 In the money Daily-bar session Unknown Quote as of 2026-09-11 19:59:59.727 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$2.15	—		—	$61.10	$64.80	—	—	—	—
Call · $240 Daily-bar session Unknown Quote as of 2026-09-11 19:59:50.840 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $240 In the money Daily-bar session Unknown Quote as of 2026-09-11 19:59:59.459 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$2.15	—		—	$72.00	$74.60	—	—	—	—
Call · $250 Daily-bar session Unknown Quote as of 2026-09-11 19:59:50.128 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $250 In the money Daily-bar session Unknown Quote as of 2026-09-11 19:59:59.727 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$2.15	—		—	$81.70	$84.80	—	—	—	—
Call · $260 Daily-bar session Unknown Quote as of 2026-09-11 19:59:50.840 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 2026-09-11 19:59:59.460 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$2.15	—		—	$91.50	$94.60	—	—	—	—
Call · $270 Daily-bar session Unknown Quote as of 2026-09-11 19:59:50.840 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 2026-09-11 19:59:59.461 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 · Jul 22, 2026–Sep 11, 2026; 27 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 62709 CUSIP 571748102 13F (30d) 299 filings 271 filers Visit website Investor relations