ALGM · Allegro Microsystems, Inc.

Track ALGM — free

$44.39 +0.26 (+0.59%) At close · Aug 14

Market Cap

$8.24B

186.40M

Options Chain

Underlying $44.39 · at close Aug 14, 2026 Options Calculator

Positioning

Aug 21, 2026 · 6 days to expiry · 58 contracts · mixed snapshot sessions · Dec 29, 2025–Aug 14, 2026; 6 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 6d Sep 18 34d Nov 20 97d Jan 15 153d Feb 19 188d May 21 279d Aug 20 370d Dec 17 489d Jan 21 524d Dec 15 853d

Calls						Puts
OI	Vol	IV	Δ	Last	Strike	Last	Δ	IV	Vol	OI
12	16	—	—	$13.00		$0.05	-0.008	382.2%	78	305
Call · $15 In the money Snapshot session Dec 29, 2025 Last $13.00 Breakeven $28.00 Implied vol — Delta — Gamma — Theta — Vega — Open interest 12 Model this call Put · $15 Snapshot session Jul 27, 2026 Last $0.05 Breakeven $14.95 Implied vol 382.2% Delta -0.008 ≈1% ITM Gamma 0.001 Theta -0.038 Vega 0.002 Open interest 305 Model this put
0	—	—	—	—		$0.10	-0.031	450.3%	5	13
Call · $17.5 In the money Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $17.5 Snapshot session Jun 22, 2026 Last $0.10 Breakeven $17.40 Implied vol 450.3% Delta -0.031 ≈3% ITM Gamma 0.003 Theta -0.146 Vega 0.004 Open interest 13 Model this put
5	1	—	—	$34.50		$0.22	-0.027	356.5%	2	3
Call · $20 In the money Snapshot session Jul 2, 2026 Last $34.50 Breakeven $54.50 Implied vol — Delta — Gamma — Theta — Vega — Open interest 5 Model this call Put · $20 Snapshot session May 21, 2026 Last $0.22 Breakeven $19.78 Implied vol 356.5% Delta -0.027 ≈3% ITM Gamma 0.003 Theta -0.102 Vega 0.004 Open interest 3 Model this put
8	1	—	—	$21.35		$0.16	-0.03	304.2%	100	122
Call · $22.5 In the money Snapshot session Jul 28, 2026 Last $21.35 Breakeven $43.85 Implied vol — Delta — Gamma — Theta — Vega — Open interest 8 Model this call Put · $22.5 Snapshot session Jul 28, 2026 Last $0.16 Breakeven $22.34 Implied vol 304.2% Delta -0.03 ≈3% ITM Gamma 0.004 Theta -0.093 Vega 0.004 Open interest 122 Model this put
18	1	—	—	$20.15		$0.40	-0.048	299%	10	38
Call · $25 In the money Snapshot session Aug 13, 2026 Last $20.15 Breakeven $45.15 Implied vol — Delta — Gamma — Theta — Vega — Open interest 18 Model this call Put · $25 Snapshot session Jul 30, 2026 Last $0.40 Breakeven $24.60 Implied vol 299% Delta -0.048 ≈5% ITM Gamma 0.006 Theta -0.137 Vega 0.008 Open interest 38 Model this put
11	2	—	—	$17.00		$0.05	-0.053	253.2%	23	80
Call · $27.5 In the money Snapshot session Aug 14, 2026 Last $17.00 Breakeven $44.50 Implied vol — Delta — Gamma — Theta — Vega — Open interest 11 Model this call Put · $27.5 Snapshot session Aug 10, 2026 Last $0.05 Breakeven $27.45 Implied vol 253.2% Delta -0.053 ≈5% ITM Gamma 0.007 Theta -0.126 Vega 0.008 Open interest 80 Model this put
36	3	—	—	$10.40		$0.05	-0.029	167.9%	10	44
Call · $30 In the money Snapshot session Jul 30, 2026 Last $10.40 Breakeven $40.40 Implied vol — Delta — Gamma — Theta — Vega — Open interest 36 Model this call Put · $30 Snapshot session Aug 12, 2026 Last $0.05 Breakeven $29.95 Implied vol 167.9% Delta -0.029 ≈3% ITM Gamma 0.007 Theta -0.05 Vega 0.005 Open interest 44 Model this put
43	5	—	—	$10.79		$0.18	-0.095	203.8%	8	440
Call · $32.5 In the money Snapshot session Aug 10, 2026 Last $10.79 Breakeven $43.29 Implied vol — Delta — Gamma — Theta — Vega — Open interest 43 Model this call Put · $32.5 Snapshot session Aug 10, 2026 Last $0.18 Breakeven $32.32 Implied vol 203.8% Delta -0.095 ≈10% ITM Gamma 0.014 Theta -0.159 Vega 0.009 Open interest 440 Model this put
36	10	—	—	$9.05		$0.05	-0.067	129.8%	9	692
Call · $35 In the money Snapshot session Aug 7, 2026 Last $9.05 Breakeven $44.05 Implied vol — Delta — Gamma — Theta — Vega — Open interest 36 Model this call Put · $35 Snapshot session Aug 14, 2026 Last $0.05 Breakeven $34.95 Implied vol 129.8% Delta -0.067 ≈7% ITM Gamma 0.017 Theta -0.077 Vega 0.009 Open interest 692 Model this put
56	2	—	—	$5.68		$0.20	-0.061	89.5%	1	365
Call · $37.5 In the money Snapshot session Aug 11, 2026 Last $5.68 Breakeven $43.18 Implied vol — Delta — Gamma — Theta — Vega — Open interest 56 Model this call Put · $37.5 Snapshot session Aug 14, 2026 Last $0.20 Breakeven $37.30 Implied vol 89.5% Delta -0.061 ≈6% ITM Gamma 0.023 Theta -0.05 Vega 0.01 Open interest 365 Model this put
360	7	59.3%	0.926	$4.44		$0.30	-0.15	84.7%	10	1.4k
Call · $40 In the money Snapshot session Aug 14, 2026 Last $4.44 Breakeven $44.44 Implied vol 59.3% Delta 0.926 ≈93% ITM Gamma 0.039 Theta -0.041 Vega 0.01 Open interest 360 Model this call Put · $40 Snapshot session Aug 14, 2026 Last $0.30 Breakeven $39.70 Implied vol 84.7% Delta -0.15 ≈15% ITM Gamma 0.046 Theta -0.09 Vega 0.015 Open interest 1.4k Model this put
170	2	63.8%	0.738	$2.70		$0.78	-0.243	57.7%	1	150
Call · $42.5 In the money Snapshot session Aug 14, 2026 Last $2.70 Breakeven $45.20 Implied vol 63.8% Delta 0.738 ≈74% ITM Gamma 0.085 Theta -0.098 Vega 0.02 Open interest 170 Model this call Put · $42.5 Snapshot session Aug 14, 2026 Last $0.78 Breakeven $41.72 Implied vol 57.7% Delta -0.243 ≈24% ITM Gamma 0.091 Theta -0.082 Vega 0.02 Open interest 150 Model this put
Underlying $44.39
419	1	66.4%	0.491	$1.00		$1.95	-0.513	61.3%	2	691
Call · $45 Snapshot session Aug 14, 2026 Last $1.00 Breakeven $46.00 Implied vol 66.4% Delta 0.491 ≈49% ITM Gamma 0.101 Theta -0.124 Vega 0.024 Open interest 419 Model this call Put · $45 In the money Snapshot session Aug 14, 2026 Last $1.95 Breakeven $43.05 Implied vol 61.3% Delta -0.513 ≈51% ITM Gamma 0.11 Theta -0.11 Vega 0.024 Open interest 691 Model this put
255	6	64.4%	0.256	$0.45		$3.95	-0.674	87.7%	2	238
Call · $47.5 Snapshot session Aug 14, 2026 Last $0.45 Breakeven $47.95 Implied vol 64.4% Delta 0.256 ≈26% ITM Gamma 0.084 Theta -0.097 Vega 0.022 Open interest 255 Model this call Put · $47.5 In the money Snapshot session Aug 12, 2026 Last $3.95 Breakeven $43.55 Implied vol 87.7% Delta -0.674 ≈67% ITM Gamma 0.069 Theta -0.142 Vega 0.022 Open interest 238 Model this put
235	3	62.5%	0.1	$0.37		$5.59	-0.813	87.6%	2	373
Call · $50 Snapshot session Aug 13, 2026 Last $0.37 Breakeven $50.37 Implied vol 62.5% Delta 0.1 ≈10% ITM Gamma 0.047 Theta -0.05 Vega 0.011 Open interest 235 Model this call Put · $50 In the money Snapshot session Aug 14, 2026 Last $5.59 Breakeven $44.41 Implied vol 87.6% Delta -0.813 ≈81% ITM Gamma 0.052 Theta -0.104 Vega 0.017 Open interest 373 Model this put
266	1	95.7%	0.119	$0.15		$13.41	-0.871	100%	5	67
Call · $52.5 Snapshot session Aug 14, 2026 Last $0.15 Breakeven $52.65 Implied vol 95.7% Delta 0.119 ≈12% ITM Gamma 0.035 Theta -0.087 Vega 0.012 Open interest 266 Model this call Put · $52.5 In the money Snapshot session Jul 30, 2026 Last $13.41 Breakeven $39.09 Implied vol 100% Delta -0.871 ≈87% ITM Gamma 0.036 Theta -0.093 Vega 0.012 Open interest 67 Model this put
468	2	106.2%	0.081	$0.33		$12.63	-0.898	114.7%	2	56
Call · $55 Snapshot session Aug 14, 2026 Last $0.33 Breakeven $55.33 Implied vol 106.2% Delta 0.081 ≈8% ITM Gamma 0.024 Theta -0.074 Vega 0.012 Open interest 468 Model this call Put · $55 In the money Snapshot session Aug 4, 2026 Last $12.63 Breakeven $42.37 Implied vol 114.7% Delta -0.898 ≈90% ITM Gamma 0.026 Theta -0.089 Vega 0.012 Open interest 56 Model this put
55	4	147.3%	0.122	$0.10		$13.70	-0.909	132.9%	10	59
Call · $57.5 Snapshot session Aug 13, 2026 Last $0.10 Breakeven $57.60 Implied vol 147.3% Delta 0.122 ≈12% ITM Gamma 0.023 Theta -0.136 Vega 0.012 Open interest 55 Model this call Put · $57.5 In the money Snapshot session Jul 17, 2026 Last $13.70 Breakeven $43.80 Implied vol 132.9% Delta -0.909 ≈91% ITM Gamma 0.021 Theta -0.096 Vega 0.012 Open interest 59 Model this put
860	15	136.8%	0.066	$0.15		$12.20	-0.926	143.9%	1	44
Call · $60 Snapshot session Aug 13, 2026 Last $0.15 Breakeven $60.15 Implied vol 136.8% Delta 0.066 ≈7% ITM Gamma 0.016 Theta -0.08 Vega 0.007 Open interest 860 Model this call Put · $60 In the money Snapshot session Jul 13, 2026 Last $12.20 Breakeven $47.80 Implied vol 143.9% Delta -0.926 ≈93% ITM Gamma 0.017 Theta -0.089 Vega 0.007 Open interest 44 Model this put
168	4	157.7%	0.07	$0.15		$11.02	-0.9	179.2%	2	0
Call · $62.5 Snapshot session Aug 3, 2026 Last $0.15 Breakeven $62.65 Implied vol 157.7% Delta 0.07 ≈7% ITM Gamma 0.014 Theta -0.097 Vega 0.007 Open interest 168 Model this call Put · $62.5 In the money Snapshot session Jul 9, 2026 Last $11.02 Breakeven $51.48 Implied vol 179.2% Delta -0.9 ≈90% ITM Gamma 0.017 Theta -0.14 Vega 0.012 Open interest 0 Model this put
338	6	171.1%	0.065	$0.17		$18.72	-0.906	195.1%	1	2
Call · $65 Snapshot session Aug 3, 2026 Last $0.17 Breakeven $65.17 Implied vol 171.1% Delta 0.065 ≈7% ITM Gamma 0.012 Theta -0.099 Vega 0.007 Open interest 338 Model this call Put · $65 In the money Snapshot session Jul 15, 2026 Last $18.72 Breakeven $46.28 Implied vol 195.1% Delta -0.906 ≈91% ITM Gamma 0.015 Theta -0.146 Vega 0.013 Open interest 2 Model this put
185	1	219.6%	0.105	$0.05		$8.27	-0.917	204.4%	6	1
Call · $67.5 Snapshot session Aug 3, 2026 Last $0.05 Breakeven $67.55 Implied vol 219.6% Delta 0.105 ≈10% ITM Gamma 0.014 Theta -0.183 Vega 0.013 Open interest 185 Model this call Put · $67.5 In the money Snapshot session Jun 30, 2026 Last $8.27 Breakeven $59.23 Implied vol 204.4% Delta -0.917 ≈92% ITM Gamma 0.013 Theta -0.139 Vega 0.007 Open interest 1 Model this put
132	1	232.2%	0.098	$0.10		$17.25	-0.921	216.6%	1	0
Call · $70 Snapshot session Aug 5, 2026 Last $0.10 Breakeven $70.10 Implied vol 232.2% Delta 0.098 ≈10% ITM Gamma 0.012 Theta -0.184 Vega 0.013 Open interest 132 Model this call Put · $70 In the money Snapshot session Jul 10, 2026 Last $17.25 Breakeven $52.75 Implied vol 216.6% Delta -0.921 ≈92% ITM Gamma 0.012 Theta -0.142 Vega 0.008 Open interest 0 Model this put
10	3	251.9%	0.102	$0.72		—	-0.918	234.8%	—	0
Call · $72.5 Snapshot session Jul 27, 2026 Last $0.72 Breakeven $73.22 Implied vol 251.9% Delta 0.102 ≈10% ITM Gamma 0.012 Theta -0.206 Vega 0.013 Open interest 10 Model this call Put · $72.5 In the money Snapshot session Unknown Last — Breakeven — Implied vol 234.8% Delta -0.918 ≈92% ITM Gamma 0.011 Theta -0.159 Vega 0.008 Open interest 0 Model this put
198	4	272.8%	0.108	$0.30		$13.80	-0.927	239.8%	5	0
Call · $75 Snapshot session Aug 10, 2026 Last $0.30 Breakeven $75.30 Implied vol 272.8% Delta 0.108 ≈11% ITM Gamma 0.011 Theta -0.232 Vega 0.014 Open interest 198 Model this call Put · $75 In the money Snapshot session Jun 30, 2026 Last $13.80 Breakeven $61.20 Implied vol 239.8% Delta -0.927 ≈93% ITM Gamma 0.01 Theta -0.147 Vega 0.008 Open interest 0 Model this put
88	20	269.6%	0.077	$0.05		$17.40	-0.931	261.5%	2	0
Call · $80 Snapshot session Aug 14, 2026 Last $0.05 Breakeven $80.05 Implied vol 269.6% Delta 0.077 ≈8% ITM Gamma 0.009 Theta -0.177 Vega 0.008 Open interest 88 Model this call Put · $80 In the money Snapshot session Jun 30, 2026 Last $17.40 Breakeven $62.60 Implied vol 261.5% Delta -0.931 ≈93% ITM Gamma 0.008 Theta -0.152 Vega 0.008 Open interest 0 Model this put
206	11	301.7%	0.083	$0.50		—	-0.935	281.9%	—	0
Call · $85 Snapshot session Jul 20, 2026 Last $0.50 Breakeven $85.50 Implied vol 301.7% Delta 0.083 ≈8% ITM Gamma 0.008 Theta -0.21 Vega 0.008 Open interest 206 Model this call Put · $85 In the money Snapshot session Unknown Last — Breakeven — Implied vol 281.9% Delta -0.935 ≈94% ITM Gamma 0.008 Theta -0.156 Vega 0.008 Open interest 0 Model this put
0	—	305.7%	0.067	—		—	-0.938	301.2%	—	0
Call · $90 Snapshot session Unknown Last — Breakeven — Implied vol 305.7% Delta 0.067 ≈7% ITM Gamma 0.007 Theta -0.18 Vega 0.009 Open interest 0 Model this call Put · $90 In the money Snapshot session Unknown Last — Breakeven — Implied vol 301.2% Delta -0.938 ≈94% ITM Gamma 0.007 Theta -0.161 Vega 0.008 Open interest 0 Model this put
7	3	323.7%	0.064	$0.75		—	-0.963	286.5%	—	0
Call · $95 Snapshot session Aug 14, 2026 Last $0.75 Breakeven $95.75 Implied vol 323.7% Delta 0.064 ≈6% ITM Gamma 0.006 Theta -0.184 Vega 0.009 Open interest 7 Model this call Put · $95 In the money Snapshot session Unknown Last — Breakeven — Implied vol 286.5% Delta -0.963 ≈96% ITM Gamma 0.005 Theta -0.099 Vega 0.004 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 · Dec 29, 2025–Aug 14, 2026; 6 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. The 25 strikes around the money are shown by default — switch to "All 29" for the wings.

Key facts CIK 866291 CUSIP 01749D105 13F (30d) 359 filings 354 filers Visit website Investor relations