MRSH · Marsh & Mclennan Companies, Inc.

Track MRSH — free Ask ALVIS about MRSH

$192.19 +8.88 (+4.84%) At close · Jul 28

Market Cap

$91.72B

477.21M

Options Chain

15-min delayed Underlying $192.19 · at close Jul 28, 2026 Options Calculator

Positioning

Aug 21, 2026 · 23 days to expiry · 46 contracts

Put / call OI

0.81

Balanced positioning

Open interest

3,815

contracts outstanding

Volume

1,458

traded today

Max pain

$180.00

$12.19 below spot

ATM implied vol

22.9%

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 23d Sep 18 51d Oct 16 79d Jan 15 170d Mar 19 233d Jan 21 541d

Calls						Puts
OI	Vol	IV	Δ	Last	Strike	Last	Δ	IV	Vol	OI
0	—	—	—	—		—	-0.023	121.8%	—	0
Call · $110 In the money Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $110 Last — Breakeven — Implied vol 121.8% Delta -0.023 ≈2% ITM Gamma 0.001 Theta -0.069 Vega 0.037 Open interest 0 Model this put
0	—	—	—	—		—	-0.02	107.3%	—	0
Call · $115 In the money Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $115 Last — Breakeven — Implied vol 107.3% Delta -0.02 ≈2% ITM Gamma 0.001 Theta -0.054 Vega 0.019 Open interest 0 Model this put
0	—	0.1%	0.999	—		$0.05	-0.023	102%	1	1
Call · $120 In the money Last — Breakeven — Implied vol 0.1% Delta 0.999 ≈100% ITM Gamma 0 Theta -0.004 Vega 0 Open interest 0 Model this call Put · $120 Last $0.05 Breakeven $119.95 Implied vol 102% Delta -0.023 ≈2% ITM Gamma 0.001 Theta -0.058 Vega 0.039 Open interest 1 Model this put
0	—	0.1%	0.999	—		$0.10	-0.017	85%	1	25
Call · $125 In the money Last — Breakeven — Implied vol 0.1% Delta 0.999 ≈100% ITM Gamma 0 Theta -0.005 Vega 0 Open interest 0 Model this call Put · $125 Last $0.10 Breakeven $124.90 Implied vol 85% Delta -0.017 ≈2% ITM Gamma 0.001 Theta -0.036 Vega 0.02 Open interest 25 Model this put
0	—	0.1%	0.999	—		—	-0.024	84.4%	—	0
Call · $130 In the money Last — Breakeven — Implied vol 0.1% Delta 0.999 ≈100% ITM Gamma 0 Theta -0.005 Vega 0 Open interest 0 Model this call Put · $130 Last — Breakeven — Implied vol 84.4% Delta -0.024 ≈2% ITM Gamma 0.001 Theta -0.05 Vega 0.04 Open interest 0 Model this put
0	—	0.1%	0.999	—		$0.06	-0.027	77.7%	1	0
Call · $135 In the money Last — Breakeven — Implied vol 0.1% Delta 0.999 ≈100% ITM Gamma 0 Theta -0.006 Vega 0 Open interest 0 Model this call Put · $135 Last $0.06 Breakeven $134.94 Implied vol 77.7% Delta -0.027 ≈3% ITM Gamma 0.002 Theta -0.05 Vega 0.041 Open interest 0 Model this put
0	—	—	—	—		$0.90	-0.034	72.9%	6	7
Call · $140 In the money Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $140 Last $0.90 Breakeven $139.10 Implied vol 72.9% Delta -0.034 ≈3% ITM Gamma 0.002 Theta -0.057 Vega 0.042 Open interest 7 Model this put
0	—	0.1%	0.999	—		$0.10	-0.027	61.3%	1	3
Call · $145 In the money Last — Breakeven — Implied vol 0.1% Delta 0.999 ≈100% ITM Gamma 0 Theta -0.007 Vega 0 Open interest 0 Model this call Put · $145 Last $0.10 Breakeven $144.90 Implied vol 61.3% Delta -0.027 ≈3% ITM Gamma 0.002 Theta -0.039 Vega 0.042 Open interest 3 Model this put
0	—	0.1%	0.999	—		$0.40	-0.041	59.4%	3	27
Call · $150 In the money Last — Breakeven — Implied vol 0.1% Delta 0.999 ≈100% ITM Gamma 0 Theta -0.007 Vega 0 Open interest 0 Model this call Put · $150 Last $0.40 Breakeven $149.60 Implied vol 59.4% Delta -0.041 ≈4% ITM Gamma 0.003 Theta -0.054 Vega 0.043 Open interest 27 Model this put
0	—	0.1%	0.999	—		$0.10	-0.044	52.4%	1	12
Call · $155 In the money Last — Breakeven — Implied vol 0.1% Delta 0.999 ≈100% ITM Gamma 0 Theta -0.008 Vega 0 Open interest 0 Model this call Put · $155 Last $0.10 Breakeven $154.90 Implied vol 52.4% Delta -0.044 ≈4% ITM Gamma 0.004 Theta -0.051 Vega 0.044 Open interest 12 Model this put
0	—	—	—	—		$0.15	-0.024	38.2%	4	207
Call · $160 In the money Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $160 Last $0.15 Breakeven $159.85 Implied vol 38.2% Delta -0.024 ≈2% ITM Gamma 0.003 Theta -0.022 Vega 0.022 Open interest 207 Model this put
5	1	—	—	$12.89		$0.50	-0.059	40.8%	1	38
Call · $165 In the money Last $12.89 Breakeven $177.89 Implied vol — Delta — Gamma — Theta — Vega — Open interest 5 Model this call Put · $165 Last $0.50 Breakeven $164.50 Implied vol 40.8% Delta -0.059 ≈6% ITM Gamma 0.006 Theta -0.05 Vega 0.046 Open interest 38 Model this put
15	2	22.1%	0.988	$20.60		$0.40	-0.064	33.5%	16	230
Call · $170 In the money Last $20.60 Breakeven $190.60 Implied vol 22.1% Delta 0.988 ≈99% ITM Gamma 0.003 Theta -0.016 Vega 0.022 Open interest 15 Model this call Put · $170 Last $0.40 Breakeven $169.60 Implied vol 33.5% Delta -0.064 ≈6% ITM Gamma 0.008 Theta -0.043 Vega 0.079 Open interest 230 Model this put
182	9	0.1%	0.999	$5.01		$0.55	-0.086	28.3%	493	256
Call · $175 In the money Last $5.01 Breakeven $180.01 Implied vol 0.1% Delta 0.999 ≈100% ITM Gamma 0 Theta -0.01 Vega 0 Open interest 182 Model this call Put · $175 Last $0.55 Breakeven $174.45 Implied vol 28.3% Delta -0.086 ≈9% ITM Gamma 0.011 Theta -0.045 Vega 0.08 Open interest 256 Model this put
612	10	20.6%	0.904	$11.20		$1.12	-0.135	24.7%	5	118
Call · $180 In the money Last $11.20 Breakeven $191.20 Implied vol 20.6% Delta 0.904 ≈90% ITM Gamma 0.017 Theta -0.046 Vega 0.08 Open interest 612 Model this call Put · $180 Last $1.12 Breakeven $178.88 Implied vol 24.7% Delta -0.135 ≈13% ITM Gamma 0.018 Theta -0.055 Vega 0.122 Open interest 118 Model this put
281	3	23.1%	0.759	$8.22		$2.24	-0.277	27.8%	808	769
Call · $185 In the money Last $8.22 Breakeven $193.22 Implied vol 23.1% Delta 0.759 ≈76% ITM Gamma 0.028 Theta -0.083 Vega 0.163 Open interest 281 Model this call Put · $185 Last $2.24 Breakeven $182.76 Implied vol 27.8% Delta -0.277 ≈28% ITM Gamma 0.025 Theta -0.094 Vega 0.164 Open interest 769 Model this put
538	28	21.6%	0.603	$5.37		$3.70	-0.407	24.2%	27	19
Call · $190 In the money Last $5.37 Breakeven $195.37 Implied vol 21.6% Delta 0.603 ≈60% ITM Gamma 0.037 Theta -0.094 Vega 0.19 Open interest 538 Model this call Put · $190 Last $3.70 Breakeven $186.30 Implied vol 24.2% Delta -0.407 ≈41% ITM Gamma 0.033 Theta -0.094 Vega 0.191 Open interest 19 Model this put
Underlying $192.19
64	20	19.9%	0.406	$3.00		—	-0.569	25.9%	—	0
Call · $195 Last $3.00 Breakeven $198.00 Implied vol 19.9% Delta 0.406 ≈41% ITM Gamma 0.04 Theta -0.086 Vega 0.195 Open interest 64 Model this call Put · $195 In the money Last — Breakeven — Implied vol 25.9% Delta -0.569 ≈57% ITM Gamma 0.032 Theta -0.1 Vega 0.195 Open interest 0 Model this put
399	9	23.2%	0.264	$1.77		—	-0.712	26.1%	—	0
Call · $200 Last $1.77 Breakeven $201.77 Implied vol 23.2% Delta 0.264 ≈26% ITM Gamma 0.029 Theta -0.083 Vega 0.175 Open interest 399 Model this call Put · $200 In the money Last — Breakeven — Implied vol 26.1% Delta -0.712 ≈71% ITM Gamma 0.028 Theta -0.086 Vega 0.173 Open interest 0 Model this put
7	8	24.3%	0.08	$0.25		—	-0.948	22.4%	—	0
Call · $210 Last $0.25 Breakeven $210.25 Implied vol 24.3% Delta 0.08 ≈8% ITM Gamma 0.013 Theta -0.039 Vega 0.093 Open interest 7 Model this call Put · $210 In the money Last — Breakeven — Implied vol 22.4% Delta -0.948 ≈95% ITM Gamma 0.013 Theta -0.019 Vega 0.046 Open interest 0 Model this put
0	—	—	—	—		—	-0.936	35.4%	—	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 35.4% Delta -0.936 ≈94% ITM Gamma 0.008 Theta -0.039 Vega 0.051 Open interest 0 Model this put
0	—	—	—	—		—	-0.951	42.8%	—	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 42.8% Delta -0.951 ≈95% ITM Gamma 0.006 Theta -0.038 Vega 0.05 Open interest 0 Model this put
0	—	—	—	—		—	-0.953	51.9%	—	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 51.9% Delta -0.953 ≈95% ITM Gamma 0.004 Theta -0.045 Vega 0.051 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 62709 CUSIP 571748102 13F (30d) 522 filings 493 filers Visit website Investor relations