ACAD · Acadia Pharmaceuticals Inc

Track ACAD — free

$28.24 -0.14 (-0.49%) At close · Aug 14

Market Cap

$4.87B

172.31M

Options Chain

Underlying $28.24 · at close Aug 14, 2026 Options Calculator

Positioning

Aug 21, 2026 · 5 days to expiry · 48 contracts · mixed snapshot sessions · Jun 23, 2026–Aug 13, 2026; 25 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 5d Sep 18 33d Oct 16 61d Dec 18 124d Jan 15 152d Mar 19 215d

Calls						Puts
OI	Vol	IV	Δ	Last	Strike	Last	Δ	IV	Vol	OI
0	—	218.6%	0.999	—		$0.05	—	—	6	6
Call · $13 In the money Snapshot session Unknown Last — Breakeven — Implied vol 218.6% Delta 0.999 ≈100% ITM Gamma 0 Theta -0.004 Vega 0 Open interest 0 Model this call Put · $13 Snapshot session Aug 5, 2026 Last $0.05 Breakeven $12.95 Implied vol — Delta — Gamma — Theta — Vega — Open interest 6 Model this put
1	1	—	—	$14.57		$0.14	—	—	1	1
Call · $14 In the money Snapshot session Aug 13, 2026 Last $14.57 Breakeven $28.57 Implied vol — Delta — Gamma — Theta — Vega — Open interest 1 Model this call Put · $14 Snapshot session Jul 31, 2026 Last $0.14 Breakeven $13.86 Implied vol — Delta — Gamma — Theta — Vega — Open interest 1 Model this put
0	—	174.4%	0.999	—		—	—	—	—	0
Call · $15 In the money Snapshot session Unknown Last — Breakeven — Implied vol 174.4% Delta 0.999 ≈100% ITM Gamma 0 Theta -0.003 Vega 0 Open interest 0 Model this call Put · $15 Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	258.2%	0.974	—		$0.07	-0.064	351.8%	1	1
Call · $16 In the money Snapshot session Unknown Last — Breakeven — Implied vol 258.2% Delta 0.974 ≈97% ITM Gamma 0.007 Theta -0.05 Vega 0.003 Open interest 0 Model this call Put · $16 Snapshot session Aug 5, 2026 Last $0.07 Breakeven $15.93 Implied vol 351.8% Delta -0.064 ≈6% ITM Gamma 0.01 Theta -0.138 Vega 0.005 Open interest 1 Model this put
0	—	—	—	—		—	-0.113	434.3%	—	0
Call · $17 In the money Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $17 Snapshot session Unknown Last — Breakeven — Implied vol 434.3% Delta -0.113 ≈11% ITM Gamma 0.013 Theta -0.26 Vega 0.007 Open interest 0 Model this put
0	—	0.1%	1	—		$0.05	-0.113	370.3%	1	1
Call · $18 In the money Snapshot session Unknown Last — Breakeven — Implied vol 0.1% Delta 1 ≈100% ITM Gamma 0 Theta -0.002 Vega 0 Open interest 0 Model this call Put · $18 Snapshot session Jul 20, 2026 Last $0.05 Breakeven $17.95 Implied vol 370.3% Delta -0.113 ≈11% ITM Gamma 0.015 Theta -0.222 Vega 0.007 Open interest 1 Model this put
0	—	0.1%	1	—		—	-0.095	285.2%	—	0
Call · $19 In the money Snapshot session Unknown Last — Breakeven — Implied vol 0.1% Delta 1 ≈100% ITM Gamma 0 Theta -0.002 Vega 0 Open interest 0 Model this call Put · $19 Snapshot session Unknown Last — Breakeven — Implied vol 285.2% Delta -0.095 ≈10% ITM Gamma 0.017 Theta -0.153 Vega 0.005 Open interest 0 Model this put
3	3	0.1%	1	$6.00		$0.70	-0.077	215.3%	1	1
Call · $20 In the money Snapshot session Jun 29, 2026 Last $6.00 Breakeven $26.00 Implied vol 0.1% Delta 1 ≈100% ITM Gamma 0 Theta -0.002 Vega 0 Open interest 3 Model this call Put · $20 Snapshot session Jun 23, 2026 Last $0.70 Breakeven $19.30 Implied vol 215.3% Delta -0.077 ≈8% ITM Gamma 0.019 Theta -0.097 Vega 0.005 Open interest 1 Model this put
0	—	0.1%	1	—		$0.24	-0.104	215.2%	2	2
Call · $21 In the money Snapshot session Unknown Last — Breakeven — Implied vol 0.1% Delta 1 ≈100% ITM Gamma 0 Theta -0.002 Vega 0 Open interest 0 Model this call Put · $21 Snapshot session Jul 15, 2026 Last $0.24 Breakeven $20.76 Implied vol 215.2% Delta -0.104 ≈10% ITM Gamma 0.024 Theta -0.123 Vega 0.005 Open interest 2 Model this put
0	—	0.1%	1	—		—	-0.124	195.2%	—	0
Call · $22 In the money Snapshot session Unknown Last — Breakeven — Implied vol 0.1% Delta 1 ≈100% ITM Gamma 0 Theta -0.002 Vega 0 Open interest 0 Model this call Put · $22 Snapshot session Unknown Last — Breakeven — Implied vol 195.2% Delta -0.124 ≈12% ITM Gamma 0.03 Theta -0.125 Vega 0.008 Open interest 0 Model this put
58	6	94.3%	0.966	$7.97		$0.64	-0.14	169.5%	1	44
Call · $23 In the money Snapshot session Aug 11, 2026 Last $7.97 Breakeven $30.97 Implied vol 94.3% Delta 0.966 ≈97% ITM Gamma 0.023 Theta -0.024 Vega 0.003 Open interest 58 Model this call Put · $23 Snapshot session Jul 24, 2026 Last $0.64 Breakeven $22.36 Implied vol 169.5% Delta -0.14 ≈14% ITM Gamma 0.038 Theta -0.117 Vega 0.008 Open interest 44 Model this put
7	1	117.6%	0.886	$2.11		$1.01	-0.175	156.7%	1	61
Call · $24 In the money Snapshot session Jul 21, 2026 Last $2.11 Breakeven $26.11 Implied vol 117.6% Delta 0.886 ≈89% ITM Gamma 0.048 Theta -0.074 Vega 0.006 Open interest 7 Model this call Put · $24 Snapshot session Jul 24, 2026 Last $1.01 Breakeven $22.99 Implied vol 156.7% Delta -0.175 ≈17% ITM Gamma 0.047 Theta -0.126 Vega 0.009 Open interest 61 Model this put
74	50	72.2%	0.921	$3.80		$0.15	-0.122	89.9%	5	5
Call · $25 In the money Snapshot session Aug 6, 2026 Last $3.80 Breakeven $28.80 Implied vol 72.2% Delta 0.921 ≈92% ITM Gamma 0.058 Theta -0.035 Vega 0.006 Open interest 74 Model this call Put · $25 Snapshot session Aug 5, 2026 Last $0.15 Breakeven $24.85 Implied vol 89.9% Delta -0.122 ≈12% ITM Gamma 0.065 Theta -0.057 Vega 0.009 Open interest 5 Model this put
522	300	49.7%	0.916	$2.60		$0.54	-0.186	79.2%	1	33
Call · $26 In the money Snapshot session Aug 13, 2026 Last $2.60 Breakeven $28.60 Implied vol 49.7% Delta 0.916 ≈92% ITM Gamma 0.089 Theta -0.026 Vega 0.006 Open interest 522 Model this call Put · $26 Snapshot session Aug 11, 2026 Last $0.54 Breakeven $25.46 Implied vol 79.2% Delta -0.186 ≈19% ITM Gamma 0.097 Theta -0.066 Vega 0.009 Open interest 33 Model this put
2k	6	—	—	$2.40		—	-0.278	66.5%	—	0
Call · $27 In the money Snapshot session Aug 13, 2026 Last $2.40 Breakeven $29.40 Implied vol — Delta — Gamma — Theta — Vega — Open interest 2k Model this call Put · $27 Snapshot session Unknown Last — Breakeven — Implied vol 66.5% Delta -0.278 ≈28% ITM Gamma 0.145 Theta -0.069 Vega 0.012 Open interest 0 Model this put
999	3	41.8%	0.579	$1.16		$0.46	-0.422	42.1%	2	3
Call · $28 In the money Snapshot session Aug 12, 2026 Last $1.16 Breakeven $29.16 Implied vol 41.8% Delta 0.579 ≈58% ITM Gamma 0.268 Theta -0.053 Vega 0.014 Open interest 999 Model this call Put · $28 Snapshot session Aug 6, 2026 Last $0.46 Breakeven $27.54 Implied vol 42.1% Delta -0.422 ≈42% ITM Gamma 0.267 Theta -0.051 Vega 0.014 Open interest 3 Model this put
Underlying $28.24
66	1	52%	0.355	$0.90		—	-0.611	65.5%	—	0
Call · $29 Snapshot session Aug 7, 2026 Last $0.90 Breakeven $29.90 Implied vol 52% Delta 0.355 ≈36% ITM Gamma 0.207 Theta -0.062 Vega 0.012 Open interest 66 Model this call Put · $29 In the money Snapshot session Unknown Last — Breakeven — Implied vol 65.5% Delta -0.611 ≈61% ITM Gamma 0.17 Theta -0.078 Vega 0.014 Open interest 0 Model this put
771	1	64%	0.236	$0.50		—	-0.692	86.8%	—	0
Call · $30 Snapshot session Aug 12, 2026 Last $0.50 Breakeven $30.50 Implied vol 64% Delta 0.236 ≈24% ITM Gamma 0.139 Theta -0.063 Vega 0.01 Open interest 771 Model this call Put · $30 In the money Snapshot session Unknown Last — Breakeven — Implied vol 86.8% Delta -0.692 ≈69% ITM Gamma 0.116 Theta -0.094 Vega 0.013 Open interest 0 Model this put
0	—	99.5%	0.243	—		—	-0.965	42.5%	—	0
Call · $31 Snapshot session Unknown Last — Breakeven — Implied vol 99.5% Delta 0.243 ≈24% ITM Gamma 0.091 Theta -0.099 Vega 0.01 Open interest 0 Model this call Put · $31 In the money Snapshot session Unknown Last — Breakeven — Implied vol 42.5% Delta -0.965 ≈96% ITM Gamma 0.06 Theta -0.009 Vega 0.003 Open interest 0 Model this put
0	—	111.1%	0.204	—		$3.59	-0.971	54.3%	4	0
Call · $32 Snapshot session Unknown Last — Breakeven — Implied vol 111.1% Delta 0.204 ≈20% ITM Gamma 0.073 Theta -0.099 Vega 0.01 Open interest 0 Model this call Put · $32 In the money Snapshot session Aug 5, 2026 Last $3.59 Breakeven $28.41 Implied vol 54.3% Delta -0.971 ≈97% ITM Gamma 0.04 Theta -0.01 Vega 0.002 Open interest 0 Model this put
0	—	127.4%	0.184	—		—	—	—	—	0
Call · $33 Snapshot session Unknown Last — Breakeven — Implied vol 127.4% Delta 0.184 ≈18% ITM Gamma 0.06 Theta -0.106 Vega 0.01 Open interest 0 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
0	—	143.2%	0.169	—		—	—	—	—	0
Call · $34 Snapshot session Unknown Last — Breakeven — Implied vol 143.2% Delta 0.169 ≈17% ITM Gamma 0.051 Theta -0.114 Vega 0.01 Open interest 0 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
10	5	233.7%	0.274	$0.05		—	—	—	—	0
Call · $35 Snapshot session Aug 13, 2026 Last $0.05 Breakeven $35.05 Implied vol 233.7% Delta 0.274 ≈27% ITM Gamma 0.041 Theta -0.248 Vega 0.01 Open interest 10 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
0	—	—	—	—		—	—	—	—	0
Call · $40 Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 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

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 23, 2026–Aug 13, 2026; 25 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 1070494 CUSIP 004225108 13F (30d) 351 filings 323 filers Visit website Investor relations