ALMS · Alumis Inc.

Track ALMS — free

$22.86 -1.13 (-4.71%) At close · Aug 20

Market Cap

$2.96B

129.44M

Options Chain

Underlying $22.86 · at close Aug 20, 2026 Options Calculator

Positioning

Aug 21, 2026 · expires today · 56 contracts · mixed snapshot sessions · Jun 12, 2026–Aug 20, 2026; 21 unknown

Put / call OI

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dated and unknown snapshot sessions

Open interest

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dated and unknown snapshot sessions

Volume

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dated and unknown snapshot sessions

Chain

Click any strike for greeks, breakeven and the calculator

Expiry

Aug 21 0d Sep 18 28d Oct 16 56d Dec 18 119d Jan 15 147d Apr 16 238d

Calls						Puts
OI	Vol	IV	Δ	Last	Strike	Last	Δ	IV	Vol	OI
0	—	—	—	—		$0.05	-0.089	1060.8%	1	20
Call · $14 In the money Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $14 Snapshot session Aug 20, 2026 Last $0.05 Breakeven $13.95 Implied vol 1060.8% Delta -0.089 ≈9% ITM Gamma 0.016 Theta -1.314 Vega 0.001 Open interest 20 Model this put
0	—	755.9%	0.934	—		$0.75	-0.175	1837.8%	1	12
Call · $15 In the money Snapshot session Unknown Last — Breakeven — Implied vol 755.9% Delta 0.934 ≈93% ITM Gamma 0.018 Theta -0.736 Vega 0.001 Open interest 0 Model this call Put · $15 Snapshot session Jun 15, 2026 Last $0.75 Breakeven $14.25 Implied vol 1837.8% Delta -0.175 ≈17% ITM Gamma 0.015 Theta -3.614 Vega 0.002 Open interest 12 Model this put
0	—	823.7%	0.89	—		$0.20	-0.109	816.9%	3	3
Call · $16 In the money Snapshot session Unknown Last — Breakeven — Implied vol 823.7% Delta 0.89 ≈89% ITM Gamma 0.024 Theta -1.19 Vega 0.002 Open interest 0 Model this call Put · $16 Snapshot session Aug 14, 2026 Last $0.20 Breakeven $15.80 Implied vol 816.9% Delta -0.109 ≈11% ITM Gamma 0.024 Theta -1.168 Vega 0.002 Open interest 3 Model this put
0	—	669.4%	0.889	—		—	-0.169	944.4%	—	0
Call · $17 In the money Snapshot session Unknown Last — Breakeven — Implied vol 669.4% Delta 0.889 ≈89% ITM Gamma 0.03 Theta -0.978 Vega 0.002 Open interest 0 Model this call Put · $17 Snapshot session Unknown Last — Breakeven — Implied vol 944.4% Delta -0.169 ≈17% ITM Gamma 0.029 Theta -1.835 Vega 0.002 Open interest 0 Model this put
0	—	637.7%	0.85	—		$0.35	-0.179	767.7%	1	9
Call · $18 In the money Snapshot session Unknown Last — Breakeven — Implied vol 637.7% Delta 0.85 ≈85% ITM Gamma 0.039 Theta -1.132 Vega 0.002 Open interest 0 Model this call Put · $18 Snapshot session Aug 14, 2026 Last $0.35 Breakeven $17.65 Implied vol 767.7% Delta -0.179 ≈18% ITM Gamma 0.037 Theta -1.551 Vega 0.002 Open interest 9 Model this put
1	1	464.6%	0.855	$5.00		$0.30	-0.156	491.5%	4	4
Call · $19 In the money Snapshot session Jun 12, 2026 Last $5.00 Breakeven $24.00 Implied vol 464.6% Delta 0.855 ≈86% ITM Gamma 0.052 Theta -0.807 Vega 0.002 Open interest 1 Model this call Put · $19 Snapshot session Aug 19, 2026 Last $0.30 Breakeven $18.70 Implied vol 491.5% Delta -0.156 ≈16% ITM Gamma 0.052 Theta -0.895 Vega 0.002 Open interest 4 Model this put
1	1	429.4%	0.802	$5.00		$0.15	-0.159	348.6%	14	441
Call · $20 In the money Snapshot session Jun 12, 2026 Last $5.00 Breakeven $25.00 Implied vol 429.4% Delta 0.802 ≈80% ITM Gamma 0.07 Theta -0.924 Vega 0.002 Open interest 1 Model this call Put · $20 Snapshot session Aug 20, 2026 Last $0.15 Breakeven $19.85 Implied vol 348.6% Delta -0.159 ≈16% ITM Gamma 0.074 Theta -0.642 Vega 0.002 Open interest 441 Model this put
1	1	536.6%	0.69	$5.60		$0.35	-0.272	388.3%	7	70
Call · $21 In the money Snapshot session Jun 16, 2026 Last $5.60 Breakeven $26.60 Implied vol 536.6% Delta 0.69 ≈69% ITM Gamma 0.071 Theta -1.465 Vega 0.003 Open interest 1 Model this call Put · $21 Snapshot session Aug 20, 2026 Last $0.35 Breakeven $20.65 Implied vol 388.3% Delta -0.272 ≈27% ITM Gamma 0.091 Theta -0.981 Vega 0.003 Open interest 70 Model this put
23	48	280.9%	0.652	$1.00		$0.85	-0.358	311.2%	9	108
Call · $22 In the money Snapshot session Aug 20, 2026 Last $1.00 Breakeven $23.00 Implied vol 280.9% Delta 0.652 ≈65% ITM Gamma 0.142 Theta -0.801 Vega 0.004 Open interest 23 Model this call Put · $22 Snapshot session Aug 20, 2026 Last $0.85 Breakeven $21.15 Implied vol 311.2% Delta -0.358 ≈36% ITM Gamma 0.128 Theta -0.891 Vega 0.004 Open interest 108 Model this put
Underlying $22.86
1	1	222%	0.492	$4.70		$1.00	-0.502	251.7%	10	102
Call · $23 Snapshot session Aug 13, 2026 Last $4.70 Breakeven $27.70 Implied vol 222% Delta 0.492 ≈49% ITM Gamma 0.193 Theta -0.681 Vega 0.004 Open interest 1 Model this call Put · $23 In the money Snapshot session Aug 20, 2026 Last $1.00 Breakeven $22.00 Implied vol 251.7% Delta -0.502 ≈50% ITM Gamma 0.17 Theta -0.771 Vega 0.004 Open interest 102 Model this put
1	5	173.5%	0.259	$0.30		$1.25	-0.65	266.3%	3	82
Call · $24 Snapshot session Aug 20, 2026 Last $0.30 Breakeven $24.30 Implied vol 173.5% Delta 0.259 ≈26% ITM Gamma 0.2 Theta -0.432 Vega 0.003 Open interest 1 Model this call Put · $24 In the money Snapshot session Aug 19, 2026 Last $1.25 Breakeven $22.75 Implied vol 266.3% Delta -0.65 ≈65% ITM Gamma 0.149 Theta -0.755 Vega 0.003 Open interest 82 Model this put
147	4	416.1%	0.333	$1.57		$3.08	-0.647	456%	1	97
Call · $25 Snapshot session Aug 19, 2026 Last $1.57 Breakeven $26.57 Implied vol 416.1% Delta 0.333 ≈33% ITM Gamma 0.093 Theta -1.154 Vega 0.003 Open interest 147 Model this call Put · $25 In the money Snapshot session Aug 20, 2026 Last $3.08 Breakeven $21.92 Implied vol 456% Delta -0.647 ≈65% ITM Gamma 0.087 Theta -1.293 Vega 0.003 Open interest 97 Model this put
79	81	390.1%	0.236	$0.90		$4.76	-0.701	495%	4	4
Call · $26 Snapshot session Aug 19, 2026 Last $0.90 Breakeven $26.90 Implied vol 390.1% Delta 0.236 ≈24% ITM Gamma 0.085 Theta -0.922 Vega 0.003 Open interest 79 Model this call Put · $26 In the money Snapshot session Jul 16, 2026 Last $4.76 Breakeven $21.24 Implied vol 495% Delta -0.701 ≈70% ITM Gamma 0.075 Theta -1.31 Vega 0.003 Open interest 4 Model this put
20	6	449.1%	0.212	$0.15		$3.42	—	—	10	20
Call · $27 Snapshot session Aug 20, 2026 Last $0.15 Breakeven $27.15 Implied vol 449.1% Delta 0.212 ≈21% ITM Gamma 0.068 Theta -0.99 Vega 0.003 Open interest 20 Model this call Put · $27 In the money Snapshot session Aug 7, 2026 Last $3.42 Breakeven $23.58 Implied vol — Delta — Gamma — Theta — Vega — Open interest 20 Model this put
199	3	440.6%	0.15	$0.10		$4.50	-0.833	464.9%	1	53
Call · $28 Snapshot session Aug 20, 2026 Last $0.10 Breakeven $28.10 Implied vol 440.6% Delta 0.15 ≈15% ITM Gamma 0.057 Theta -0.791 Vega 0.002 Open interest 199 Model this call Put · $28 In the money Snapshot session Aug 20, 2026 Last $4.50 Breakeven $23.50 Implied vol 464.9% Delta -0.833 ≈83% ITM Gamma 0.057 Theta -0.887 Vega 0.003 Open interest 53 Model this put
9	1	596.7%	0.201	$0.10		—	—	—	—	0
Call · $29 Snapshot session Aug 20, 2026 Last $0.10 Breakeven $29.10 Implied vol 596.7% Delta 0.201 ≈20% ITM Gamma 0.05 Theta -1.273 Vega 0.003 Open interest 9 Model this call Put · $29 In the money Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
2.5k	14	384.8%	0.051	$0.05		$7.20	—	—	31	44
Call · $30 Snapshot session Aug 20, 2026 Last $0.05 Breakeven $30.05 Implied vol 384.8% Delta 0.051 ≈5% ITM Gamma 0.029 Theta -0.304 Vega 0.001 Open interest 2.5k Model this call Put · $30 In the money Snapshot session Aug 11, 2026 Last $7.20 Breakeven $22.80 Implied vol — Delta — Gamma — Theta — Vega — Open interest 44 Model this put
1	10	1302%	0.385	$0.30		—	—	—	—	0
Call · $31 Snapshot session Aug 19, 2026 Last $0.30 Breakeven $31.30 Implied vol 1302% Delta 0.385 ≈39% ITM Gamma 0.031 Theta -3.791 Vega 0.004 Open interest 1 Model this call Put · $31 In the money Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	677.4%	0.144	—		—	—	—	—	0
Call · $32 Snapshot session Unknown Last — Breakeven — Implied vol 677.4% Delta 0.144 ≈14% ITM Gamma 0.036 Theta -1.171 Vega 0.002 Open interest 0 Model this call Put · $32 In the money Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
1	2	716.5%	0.138	$4.20		—	—	—	—	0
Call · $33 Snapshot session Jul 17, 2026 Last $4.20 Breakeven $37.20 Implied vol 716.5% Delta 0.138 ≈14% ITM Gamma 0.033 Theta -1.199 Vega 0.002 Open interest 1 Model this call Put · $33 In the money Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
3	3	754.5%	0.132	$1.20		—	—	—	—	0
Call · $34 Snapshot session Aug 12, 2026 Last $1.20 Breakeven $35.20 Implied vol 754.5% Delta 0.132 ≈13% ITM Gamma 0.03 Theta -1.226 Vega 0.002 Open interest 3 Model this call Put · $34 In the money Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
47	17	828.2%	0.142	$0.20		—	—	—	—	0
Call · $35 Snapshot session Aug 17, 2026 Last $0.20 Breakeven $35.20 Implied vol 828.2% Delta 0.142 ≈14% ITM Gamma 0.029 Theta -1.413 Vega 0.002 Open interest 47 Model this call Put · $35 In the money Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
109	25	1545%	0.345	$0.05		—	—	—	—	0
Call · $36 Snapshot session Aug 20, 2026 Last $0.05 Breakeven $36.05 Implied vol 1545% Delta 0.345 ≈34% ITM Gamma 0.025 Theta -4.387 Vega 0.004 Open interest 109 Model this call Put · $36 In the money Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	910.1%	0.138	—		—	—	—	—	0
Call · $37 Snapshot session Unknown Last — Breakeven — Implied vol 910.1% Delta 0.138 ≈14% ITM Gamma 0.026 Theta -1.52 Vega 0.002 Open interest 0 Model this call Put · $37 In the money Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
1	1	955.5%	0.138	$1.15		—	—	—	—	0
Call · $38 Snapshot session Aug 11, 2026 Last $1.15 Breakeven $39.15 Implied vol 955.5% Delta 0.138 ≈14% ITM Gamma 0.024 Theta -1.6 Vega 0.002 Open interest 1 Model this call Put · $38 In the money Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	929.6%	0.114	—		—	—	—	—	0
Call · $39 Snapshot session Unknown Last — Breakeven — Implied vol 929.6% Delta 0.114 ≈11% ITM Gamma 0.022 Theta -1.362 Vega 0.002 Open interest 0 Model this call Put · $39 In the money Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
164	5	996.7%	0.124	$0.05		—	—	—	—	0
Call · $40 Snapshot session Aug 20, 2026 Last $0.05 Breakeven $40.05 Implied vol 996.7% Delta 0.124 ≈12% ITM Gamma 0.022 Theta -1.547 Vega 0.002 Open interest 164 Model this call Put · $40 In the money Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
52	8	1135.2%	0.109	$0.05		—	—	—	—	0
Call · $45 Snapshot session Aug 20, 2026 Last $0.05 Breakeven $45.05 Implied vol 1135.2% Delta 0.109 ≈11% ITM Gamma 0.018 Theta -1.626 Vega 0.002 Open interest 52 Model this call Put · $45 In the money Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put

About this data

Each contract's last price, volume, greeks, implied volatility and open interest belongs to the snapshot session shown in its details; unknown means the provider omitted the timestamp. This chain has mixed snapshot sessions · Jun 12, 2026–Aug 20, 2026; 21 unknown. Cross-contract positioning totals are shown only when every returned row has the same known session. 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.

Key facts CIK 1847367 CUSIP 022307102 13F (30d) 190 filings 186 filers Visit website Investor relations