CMPS · COMPASS Pathways plc

Track CMPS — free

$13.27 -0.02 (-0.15%) At close · Sep 4

Rebalance outlook locked

Market Cap

$1.84B

138.48M

Options Chain

Underlying $13.27 · at close Sep 4, 2026 Options Calculator

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Positioning

Sep 18, 2026 · 10 days to expiry · 34 contracts · mixed daily-bar sessions · Jul 30, 2026–Sep 4, 2026; 6 unknown

Put / call OI

0.21

Call-heavy positioning

Open interest

24,662

as of Sep 3, 2026

Volume

—

dated and unknown daily-bar sessions

Max pain

$13.00

$0.27 below spot

ATM implied vol

72.8%

market's expected move

Open interest by strike

Calls Puts

Chain

Click any strike for greeks, breakeven and the calculator

Expiry

Sep 18 10d Oct 16 38d Nov 20 73d Jan 15 129d Feb 19 164d Jan 21 500d

Calls								Puts
OI	Vol	IV	Δ	Bid	Ask	Last	Strike	Last	Bid	Ask	Δ	IV	Vol	OI
2	2	—	—	$7.50	$9.50	$8.90		—	$0.00	$0.25	—	—	—	—
Call · $5 In the money Daily-bar session Aug 21, 2026 Quote as of 2026-09-04 19:59:22.459 UTC Last $8.90 Breakeven $13.90 Implied vol — Delta — Gamma — Theta — Vega — Open interest 2 OI effective date Sep 3, 2026 Model this call Put · $5 Daily-bar session Unknown Quote as of 2026-09-04 19:56:55.501 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
13	16	—	—	$6.50	$8.50	$7.60		$0.25	$0.00	$0.25	—	—	1	1
Call · $6 In the money Daily-bar session Aug 21, 2026 Quote as of 2026-09-04 19:59:22.460 UTC Last $7.60 Breakeven $13.60 Implied vol — Delta — Gamma — Theta — Vega — Open interest 13 OI effective date Sep 3, 2026 Model this call Put · $6 Daily-bar session Jul 30, 2026 Quote as of 2026-09-04 19:58:30.209 UTC Last $0.25 Breakeven $5.75 Implied vol — Delta — Gamma — Theta — Vega — Open interest 1 OI effective date Sep 3, 2026 Model this put
—	—	—	—	$5.50	$7.50	—		$0.04	$0.00	$0.75	—	—	80	80
Call · $7 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:59:21.945 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $7 Daily-bar session Aug 13, 2026 Quote as of 2026-09-04 19:59:30.804 UTC Last $0.04 Breakeven $6.96 Implied vol — Delta — Gamma — Theta — Vega — Open interest 80 OI effective date Sep 3, 2026 Model this put
5	5	—	—	$4.60	$6.30	$5.50		$0.02	$0.00	$0.75	—	—	2	56
Call · $8 In the money Daily-bar session Aug 21, 2026 Quote as of 2026-09-04 19:55:37.060 UTC Last $5.50 Breakeven $13.50 Implied vol — Delta — Gamma — Theta — Vega — Open interest 5 OI effective date Sep 3, 2026 Model this call Put · $8 Daily-bar session Aug 24, 2026 Quote as of 2026-09-04 19:59:30.728 UTC Last $0.02 Breakeven $7.98 Implied vol — Delta — Gamma — Theta — Vega — Open interest 56 OI effective date Sep 3, 2026 Model this put
9	10	—	—	$3.80	$5.00	$5.90		$0.10	$0.00	$0.75	—	—	205	215
Call · $9 In the money Daily-bar session Aug 27, 2026 Quote as of 2026-09-04 19:59:40.650 UTC Last $5.90 Breakeven $14.90 Implied vol — Delta — Gamma — Theta — Vega — Open interest 9 OI effective date Sep 3, 2026 Model this call Put · $9 Daily-bar session Aug 19, 2026 Quote as of 2026-09-04 19:59:30.683 UTC Last $0.10 Breakeven $8.90 Implied vol — Delta — Gamma — Theta — Vega — Open interest 215 OI effective date Sep 3, 2026 Model this put
14	1	—	—	$2.60	$4.40	$4.20		$0.01	$0.00	$0.30	—	—	1	163
Call · $10 In the money Daily-bar session Aug 24, 2026 Quote as of 2026-09-04 19:59:45.099 UTC Last $4.20 Breakeven $14.20 Implied vol — Delta — Gamma — Theta — Vega — Open interest 14 OI effective date Sep 3, 2026 Model this call Put · $10 Daily-bar session Sep 3, 2026 Quote as of 2026-09-04 19:56:30.089 UTC Last $0.01 Breakeven $9.99 Implied vol — Delta — Gamma — Theta — Vega — Open interest 163 OI effective date Sep 3, 2026 Model this put
101	100	71.8%	0.956	$1.30	$3.50	$2.43		$0.12	$0.00	$0.35	—	—	19	174
Call · $11 In the money Daily-bar session Sep 1, 2026 Quote as of 2026-09-04 19:59:40.624 UTC Last $2.43 Breakeven $13.43 Implied vol 71.8% Delta 0.956 ≈96% ITM Gamma 0.059 Theta -0.008 Vega 0.002 Open interest 101 OI effective date Sep 3, 2026 Model this call Put · $11 Daily-bar session Sep 4, 2026 Quote as of 2026-09-04 19:59:02.642 UTC Last $0.12 Breakeven $10.88 Implied vol — Delta — Gamma — Theta — Vega — Open interest 174 OI effective date Sep 3, 2026 Model this put
786	1	85.6%	0.798	$1.20	$2.00	$1.65		$0.24	$0.15	$0.30	-0.2	84.9%	558	505
Call · $12 In the money Daily-bar session Sep 4, 2026 Quote as of 2026-09-04 19:59:10.609 UTC Last $1.65 Breakeven $13.65 Implied vol 85.6% Delta 0.798 ≈80% ITM Gamma 0.149 Theta -0.028 Vega 0.006 Open interest 786 OI effective date Sep 3, 2026 Model this call Put · $12 Daily-bar session Sep 4, 2026 Quote as of 2026-09-04 19:59:59.539 UTC Last $0.24 Breakeven $11.76 Implied vol 84.9% Delta -0.2 ≈20% ITM Gamma 0.149 Theta -0.026 Vega 0.006 Open interest 505 OI effective date Sep 3, 2026 Model this put
1.2k	19	74.5%	0.614	$0.70	$1.00	$0.76		$0.49	$0.25	$0.65	-0.383	71.1%	378	1.1k
Call · $13 In the money Daily-bar session Sep 4, 2026 Quote as of 2026-09-04 19:59:34.058 UTC Last $0.76 Breakeven $13.76 Implied vol 74.5% Delta 0.614 ≈61% ITM Gamma 0.232 Theta -0.032 Vega 0.009 Open interest 1.2k OI effective date Sep 3, 2026 Model this call Put · $13 Daily-bar session Sep 4, 2026 Quote as of 2026-09-04 19:59:50.297 UTC Last $0.49 Breakeven $12.51 Implied vol 71.1% Delta -0.383 ≈38% ITM Gamma 0.243 Theta -0.03 Vega 0.008 Open interest 1.1k OI effective date Sep 3, 2026 Model this put
Underlying $13.27
726	70	74%	0.377	$0.35	$0.45	$0.36		$1.20	$0.80	$1.25	-0.624	73.7%	1	1.6k
Call · $14 Daily-bar session Sep 4, 2026 Quote as of 2026-09-04 19:59:56.056 UTC Last $0.36 Breakeven $14.36 Implied vol 74% Delta 0.377 ≈38% ITM Gamma 0.232 Theta -0.032 Vega 0.008 Open interest 726 OI effective date Sep 3, 2026 Model this call Put · $14 In the money Daily-bar session Sep 4, 2026 Quote as of 2026-09-04 19:59:58.004 UTC Last $1.20 Breakeven $12.80 Implied vol 73.7% Delta -0.624 ≈62% ITM Gamma 0.233 Theta -0.03 Vega 0.008 Open interest 1.6k OI effective date Sep 3, 2026 Model this put
13.9k	61	87.7%	0.236	$0.15	$0.35	$0.20		$1.57	$1.35	$2.35	-0.776	83.7%	24	358
Call · $15 Daily-bar session Sep 4, 2026 Quote as of 2026-09-04 19:59:54.900 UTC Last $0.20 Breakeven $15.20 Implied vol 87.7% Delta 0.236 ≈24% ITM Gamma 0.159 Theta -0.03 Vega 0.007 Open interest 13.9k OI effective date Sep 3, 2026 Model this call Put · $15 In the money Daily-bar session Aug 28, 2026 Quote as of 2026-09-04 19:59:02.642 UTC Last $1.57 Breakeven $13.43 Implied vol 83.7% Delta -0.776 ≈78% ITM Gamma 0.162 Theta -0.027 Vega 0.007 Open interest 358 OI effective date Sep 3, 2026 Model this put
292	61	79.2%	0.096	$0.05	$0.10	$0.15		$2.92	$2.30	$3.50	-0.795	117.7%	1	—
Call · $16 Daily-bar session Sep 3, 2026 Quote as of 2026-09-04 19:59:56.048 UTC Last $0.15 Breakeven $16.15 Implied vol 79.2% Delta 0.096 ≈10% ITM Gamma 0.097 Theta -0.015 Vega 0.004 Open interest 292 OI effective date Sep 3, 2026 Model this call Put · $16 In the money Daily-bar session Sep 3, 2026 Quote as of 2026-09-04 19:59:48.247 UTC Last $2.92 Breakeven $13.08 Implied vol 117.7% Delta -0.795 ≈79% ITM Gamma 0.109 Theta -0.036 Vega 0.006 Open interest — OI effective date — Model this put
296	29	—	—	$0.05	$0.45	$0.05		$3.80	$3.30	$4.40	-0.839	132%	1	1
Call · $17 Daily-bar session Sep 4, 2026 Quote as of 2026-09-04 19:58:32.290 UTC Last $0.05 Breakeven $17.05 Implied vol — Delta — Gamma — Theta — Vega — Open interest 296 OI effective date Sep 3, 2026 Model this call Put · $17 In the money Daily-bar session Aug 14, 2026 Quote as of 2026-09-04 19:59:22.459 UTC Last $3.80 Breakeven $13.20 Implied vol 132% Delta -0.839 ≈84% ITM Gamma 0.084 Theta -0.034 Vega 0.005 Open interest 1 OI effective date Sep 3, 2026 Model this put
119	1	—	—	$0.00	$0.35	$0.20		—	$4.40	$5.30	—	—	—	—
Call · $18 Daily-bar session Aug 31, 2026 Quote as of 2026-09-04 19:56:12.010 UTC Last $0.20 Breakeven $18.20 Implied vol — Delta — Gamma — Theta — Vega — Open interest 119 OI effective date Sep 3, 2026 Model this call Put · $18 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:59:54.390 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
80	5	—	—	$0.00	$0.35	$0.06		—	$5.10	$6.60	—	—	—	—
Call · $19 Daily-bar session Sep 3, 2026 Quote as of 2026-09-04 19:55:11.256 UTC Last $0.06 Breakeven $19.06 Implied vol — Delta — Gamma — Theta — Vega — Open interest 80 OI effective date Sep 3, 2026 Model this call Put · $19 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:59:34.070 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
2.8k	20	—	—	$0.00	$0.10	$0.10		—	$6.10	$7.60	—	—	—	—
Call · $20 Daily-bar session Sep 4, 2026 Quote as of 2026-09-04 19:59:48.064 UTC Last $0.10 Breakeven $20.10 Implied vol — Delta — Gamma — Theta — Vega — Open interest 2.8k OI effective date Sep 3, 2026 Model this call Put · $20 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:59:30.455 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
77	3	—	—	$0.00	$0.25	$0.05		—	$7.10	$8.60	—	—	—	—
Call · $21 Daily-bar session Sep 3, 2026 Quote as of 2026-09-04 19:59:31.001 UTC Last $0.05 Breakeven $21.05 Implied vol — Delta — Gamma — Theta — Vega — Open interest 77 OI effective date Sep 3, 2026 Model this call Put · $21 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:59:21.947 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — 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 · Jul 30, 2026–Sep 4, 2026; 6 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 1816590 CUSIP 20451W101 13F (30d) 132 filings 131 filers Visit website Investor relations