INSM · INSMED Inc · Options Chain

Track INSM — free

$120.00 -3.98 (-3.21%) At close · Sep 18

Russell 1000 member Rebalance outlook locked

Market Cap

$27.07B

218.38M

Options Chain

Underlying $120.00 · at close Sep 18, 2026 Options Calculator

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

Positioning

Oct 16, 2026 · 26 days to expiry · 46 contracts · mixed daily-bar sessions · Aug 21, 2026–Sep 18, 2026; 23 unknown

Put / call OI

0.31

Call-heavy positioning

Open interest

1,371

as of Sep 17, 2026

Volume

—

dated and unknown daily-bar sessions

Max pain

$125.00

$5.00 above spot

ATM implied vol

43%

market's expected move

Open interest by strike

Calls Puts

100

105

110

115

120

125

130

135

140

145

150

155

160

165

170

175

180

185

Chain

Click any strike for greeks, breakeven and the calculator

Expiry

Oct 16 26d Nov 20 61d Jan 15 117d Feb 19 152d Mar 19 180d May 21 243d Aug 20 334d Nov 19 425d Jan 21 488d Dec 15 817d Jan 19 852d

Calls								Puts
OI	Vol	IV	Δ	Bid	Ask	Last	Strike	Last	Bid	Ask	Δ	IV	Vol	OI
—	—	—	—	$43.20	$47.40	—		—	$0.00	$1.15	—	—	—	—
Call · $75 In the money Daily-bar session Unknown Quote as of 2026-09-18 19:59:59.456 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $75 Daily-bar session Unknown Quote as of 2026-09-18 19:59:52.841 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	—	—	$38.20	$42.40	—		—	$0.00	$1.35	—	—	—	—
Call · $80 In the money Daily-bar session Unknown Quote as of 2026-09-18 19:59:59.456 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $80 Daily-bar session Unknown Quote as of 2026-09-18 19:59:59.296 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
1	1	—	—	$33.20	$37.40	$42.15		—	$0.00	$1.15	—	—	—	—
Call · $85 In the money Daily-bar session Sep 14, 2026 Quote as of 2026-09-18 19:59:52.225 UTC Last $42.15 Breakeven $127.15 Implied vol — Delta — Gamma — Theta — Vega — Open interest 1 OI effective date Sep 17, 2026 Model this call Put · $85 Daily-bar session Unknown Quote as of 2026-09-18 19:59:59.296 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	—	—	$28.20	$32.40	—		—	$0.00	$0.95	—	—	—	—
Call · $90 In the money Daily-bar session Unknown Quote as of 2026-09-18 19:59:59.302 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $90 Daily-bar session Unknown Quote as of 2026-09-18 19:59:52.519 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	—	—	$23.90	$27.40	—		—	$0.00	$1.15	—	—	—	—
Call · $95 In the money Daily-bar session Unknown Quote as of 2026-09-18 19:59:59.688 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $95 Daily-bar session Unknown Quote as of 2026-09-18 19:59:00.855 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	34.4%	0.982	$19.10	$22.60	—		$0.34	$0.00	$2.30	—	—	2	2
Call · $100 In the money Daily-bar session Unknown Quote as of 2026-09-18 19:59:59.751 UTC Last — Breakeven — Implied vol 34.4% Delta 0.982 ≈98% ITM Gamma 0.004 Theta -0.02 Vega 0.014 Open interest — OI effective date — Model this call Put · $100 Daily-bar session Sep 11, 2026 Quote as of 2026-09-18 19:56:59.150 UTC Last $0.34 Breakeven $99.66 Implied vol — Delta — Gamma — Theta — Vega — Open interest 2 OI effective date Sep 17, 2026 Model this put
—	—	35.1%	0.939	$14.70	$17.50	—		$0.90	$0.00	$2.65	—	—	1	4
Call · $105 In the money Daily-bar session Unknown Quote as of 2026-09-18 19:55:18.007 UTC Last — Breakeven — Implied vol 35.1% Delta 0.939 ≈94% ITM Gamma 0.011 Theta -0.037 Vega 0.039 Open interest — OI effective date — Model this call Put · $105 Daily-bar session Sep 15, 2026 Quote as of 2026-09-18 19:58:39.084 UTC Last $0.90 Breakeven $104.10 Implied vol — Delta — Gamma — Theta — Vega — Open interest 4 OI effective date Sep 17, 2026 Model this put
2	2	41.4%	0.817	$10.50	$13.90	$12.80		$1.02	$0.50	$3.30	-0.209	47.1%	74	8
Call · $110 In the money Daily-bar session Aug 31, 2026 Quote as of 2026-09-18 19:59:52.491 UTC Last $12.80 Breakeven $122.80 Implied vol 41.4% Delta 0.817 ≈82% ITM Gamma 0.02 Theta -0.077 Vega 0.085 Open interest 2 OI effective date Sep 17, 2026 Model this call Put · $110 Daily-bar session Sep 18, 2026 Quote as of 2026-09-18 19:59:52.580 UTC Last $1.02 Breakeven $108.98 Implied vol 47.1% Delta -0.209 ≈21% ITM Gamma 0.019 Theta -0.081 Vega 0.092 Open interest 8 OI effective date Sep 17, 2026 Model this put
3	1k	38.7%	0.702	$6.20	$10.40	$8.70		$2.47	$1.60	$5.10	-0.322	46.4%	85	57
Call · $115 In the money Daily-bar session Sep 18, 2026 Quote as of 2026-09-18 19:59:59.317 UTC Last $8.70 Breakeven $123.70 Implied vol 38.7% Delta 0.702 ≈70% ITM Gamma 0.028 Theta -0.091 Vega 0.112 Open interest 3 OI effective date Sep 17, 2026 Model this call Put · $115 Daily-bar session Sep 18, 2026 Quote as of 2026-09-18 19:59:59.647 UTC Last $2.47 Breakeven $112.53 Implied vol 46.4% Delta -0.322 ≈32% ITM Gamma 0.024 Theta -0.098 Vega 0.115 Open interest 57 OI effective date Sep 17, 2026 Model this put
Underlying $120.00
74	23	43.6%	0.547	$4.90	$7.10	$5.85		$5.30	$3.80	$6.20	-0.453	42.3%	34	139
Call · $120 Daily-bar session Sep 18, 2026 Quote as of 2026-09-18 19:59:52.516 UTC Last $5.85 Breakeven $125.85 Implied vol 43.6% Delta 0.547 ≈55% ITM Gamma 0.028 Theta -0.113 Vega 0.127 Open interest 74 OI effective date Sep 17, 2026 Model this call Put · $120 Daily-bar session Sep 18, 2026 Quote as of 2026-09-18 19:59:53.572 UTC Last $5.30 Breakeven $114.70 Implied vol 42.3% Delta -0.453 ≈45% ITM Gamma 0.029 Theta -0.097 Vega 0.127 Open interest 139 OI effective date Sep 17, 2026 Model this put
94	12	38.6%	0.391	$1.55	$4.90	$4.05		$7.42	$7.60	$9.50	-0.58	48%	2	106
Call · $125 Daily-bar session Sep 18, 2026 Quote as of 2026-09-18 19:59:53.073 UTC Last $4.05 Breakeven $129.05 Implied vol 38.6% Delta 0.391 ≈39% ITM Gamma 0.031 Theta -0.096 Vega 0.123 Open interest 94 OI effective date Sep 17, 2026 Model this call Put · $125 In the money Daily-bar session Sep 18, 2026 Quote as of 2026-09-18 19:59:59.999 UTC Last $7.42 Breakeven $117.58 Implied vol 48% Delta -0.58 ≈58% ITM Gamma 0.025 Theta -0.108 Vega 0.126 Open interest 106 OI effective date Sep 17, 2026 Model this put
219	116	42.5%	0.279	$1.65	$2.80	$2.10		$11.00	$10.80	$13.10	-0.695	47.8%	2	6
Call · $130 Daily-bar session Sep 18, 2026 Quote as of 2026-09-18 19:59:52.510 UTC Last $2.10 Breakeven $132.10 Implied vol 42.5% Delta 0.279 ≈28% ITM Gamma 0.025 Theta -0.092 Vega 0.108 Open interest 219 OI effective date Sep 17, 2026 Model this call Put · $130 In the money Daily-bar session Sep 18, 2026 Quote as of 2026-09-18 19:59:52.474 UTC Last $11.00 Breakeven $119.00 Implied vol 47.8% Delta -0.695 ≈69% ITM Gamma 0.023 Theta -0.094 Vega 0.113 Open interest 6 OI effective date Sep 17, 2026 Model this put
150	74	41.8%	0.174	$0.85	$1.55	$1.23		—	$13.90	$17.80	-0.79	47.8%	—	—
Call · $135 Daily-bar session Sep 18, 2026 Quote as of 2026-09-18 19:59:52.485 UTC Last $1.23 Breakeven $136.23 Implied vol 41.8% Delta 0.174 ≈17% ITM Gamma 0.019 Theta -0.069 Vega 0.083 Open interest 150 OI effective date Sep 17, 2026 Model this call Put · $135 In the money Daily-bar session Unknown Quote as of 2026-09-18 19:59:52.505 UTC Last — Breakeven — Implied vol 47.8% Delta -0.79 ≈79% ITM Gamma 0.019 Theta -0.073 Vega 0.093 Open interest — OI effective date — Model this put
385	2	—	—	$0.00	$1.80	$1.30		$18.70	$18.40	$21.80	-0.865	47.4%	1	1
Call · $140 Daily-bar session Sep 17, 2026 Quote as of 2026-09-18 19:59:52.474 UTC Last $1.30 Breakeven $141.30 Implied vol — Delta — Gamma — Theta — Vega — Open interest 385 OI effective date Sep 17, 2026 Model this call Put · $140 In the money Daily-bar session Sep 1, 2026 Quote as of 2026-09-18 19:59:52.243 UTC Last $18.70 Breakeven $121.30 Implied vol 47.4% Delta -0.865 ≈86% ITM Gamma 0.014 Theta -0.051 Vega 0.07 Open interest 1 OI effective date Sep 17, 2026 Model this put
48	2	—	—	$0.00	$2.50	$0.82		—	$23.00	$26.60	-0.902	50.1%	—	—
Call · $145 Daily-bar session Sep 16, 2026 Quote as of 2026-09-18 19:56:57.607 UTC Last $0.82 Breakeven $145.82 Implied vol — Delta — Gamma — Theta — Vega — Open interest 48 OI effective date Sep 17, 2026 Model this call Put · $145 In the money Daily-bar session Unknown Quote as of 2026-09-18 19:59:59.941 UTC Last — Breakeven — Implied vol 50.1% Delta -0.902 ≈90% ITM Gamma 0.011 Theta -0.039 Vega 0.055 Open interest — OI effective date — Model this put
45	2	—	—	$0.00	$1.75	$0.57		—	$27.90	$32.10	-0.895	60.7%	—	—
Call · $150 Daily-bar session Sep 15, 2026 Quote as of 2026-09-18 19:27:23.056 UTC Last $0.57 Breakeven $150.57 Implied vol — Delta — Gamma — Theta — Vega — Open interest 45 OI effective date Sep 17, 2026 Model this call Put · $150 In the money Daily-bar session Unknown Quote as of 2026-09-18 19:59:59.456 UTC Last — Breakeven — Implied vol 60.7% Delta -0.895 ≈90% ITM Gamma 0.009 Theta -0.054 Vega 0.058 Open interest — OI effective date — Model this put
4	4	—	—	$0.00	$2.40	$0.45		—	$32.90	$37.10	-0.902	67.4%	—	—
Call · $155 Daily-bar session Sep 3, 2026 Quote as of 2026-09-18 19:59:52.355 UTC Last $0.45 Breakeven $155.45 Implied vol — Delta — Gamma — Theta — Vega — Open interest 4 OI effective date Sep 17, 2026 Model this call Put · $155 In the money Daily-bar session Unknown Quote as of 2026-09-18 19:59:52.227 UTC Last — Breakeven — Implied vol 67.4% Delta -0.902 ≈90% ITM Gamma 0.008 Theta -0.057 Vega 0.056 Open interest — OI effective date — Model this put
20	20	—	—	$0.00	$2.30	$0.50		—	$37.90	$42.10	-0.908	73.8%	—	—
Call · $160 Daily-bar session Sep 9, 2026 Quote as of 2026-09-18 19:59:52.356 UTC Last $0.50 Breakeven $160.50 Implied vol — Delta — Gamma — Theta — Vega — Open interest 20 OI effective date Sep 17, 2026 Model this call Put · $160 In the money Daily-bar session Unknown Quote as of 2026-09-18 19:59:59.304 UTC Last — Breakeven — Implied vol 73.8% Delta -0.908 ≈91% ITM Gamma 0.007 Theta -0.06 Vega 0.053 Open interest — OI effective date — Model this put
3	3	—	—	$0.00	$2.25	$0.50		$39.90	$42.90	$47.10	-0.912	79.9%	7	—
Call · $165 Daily-bar session Aug 21, 2026 Quote as of 2026-09-18 19:59:52.356 UTC Last $0.50 Breakeven $165.50 Implied vol — Delta — Gamma — Theta — Vega — Open interest 3 OI effective date Sep 17, 2026 Model this call Put · $165 In the money Daily-bar session Aug 27, 2026 Quote as of 2026-09-18 19:59:59.304 UTC Last $39.90 Breakeven $125.10 Implied vol 79.9% Delta -0.912 ≈91% ITM Gamma 0.006 Theta -0.062 Vega 0.051 Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$1.15	—		$46.25	$47.90	$52.10	-0.916	85.7%	25	—
Call · $170 Daily-bar session Unknown Quote as of 2026-09-18 19:59:53.034 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $170 In the money Daily-bar session Sep 17, 2026 Quote as of 2026-09-18 19:59:52.488 UTC Last $46.25 Breakeven $123.75 Implied vol 85.7% Delta -0.916 ≈92% ITM Gamma 0.006 Theta -0.065 Vega 0.05 Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$0.95	—		—	$52.90	$56.60	-0.934	85.8%	—	—
Call · $175 Daily-bar session Unknown Quote as of 2026-09-18 19:59:52.506 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $175 In the money Daily-bar session Unknown Quote as of 2026-09-18 19:59:59.436 UTC Last — Breakeven — Implied vol 85.8% Delta -0.934 ≈93% ITM Gamma 0.005 Theta -0.05 Vega 0.041 Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$1.15	—		—	$57.90	$62.10	-0.922	96.7%	—	—
Call · $180 Daily-bar session Unknown Quote as of 2026-09-18 19:59:53.857 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $180 In the money Daily-bar session Unknown Quote as of 2026-09-18 19:59:59.305 UTC Last — Breakeven — Implied vol 96.7% Delta -0.922 ≈92% ITM Gamma 0.005 Theta -0.069 Vega 0.047 Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$0.95	—		—	$62.90	$67.10	-0.924	101.9%	—	—
Call · $185 Daily-bar session Unknown Quote as of 2026-09-18 19:59:54.303 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $185 In the money Daily-bar session Unknown Quote as of 2026-09-18 19:59:59.305 UTC Last — Breakeven — Implied vol 101.9% Delta -0.924 ≈92% ITM Gamma 0.004 Theta -0.072 Vega 0.046 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 · Aug 21, 2026–Sep 18, 2026; 23 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 1104506 CUSIP 457669307 13F (30d) 14 filings 11 filers Visit website Investor relations