Compass Therapeutics (CMPX) Options Chain
NASDAQ: CMPXHealth CareBiotechnology: Biological Products (No Diagnostic Substances)USD
At close: Oct 8, 4:00 PM ET · Delayed 15 min
Expiration date
- Expiration
- Oct 16, 2026
- Days to expiration
- 8
- Share price
- $0.9834
- Put/call ratio (OI)
- 0.12
- Put/call ratio (volume)
- 1.33
- ATM implied volatility
- 395.3%
- Expected move
- ±$0.5755
- Open interest (C / P)
- 3.08K / 371
CMPX options summary
The CMPX options chain for the October 16, 2026 expiration lists 5 call and 4 put contracts, with 8 days until expiration. Open interest stands at 3,078 calls and 371 puts, a put/call ratio of 0.12, which is tilted bullish, with calls outnumbering puts. At-the-money implied volatility near the $1.00 strike is 395.3%, which implies the market expects a move of about ±$0.5755 (58.5%) in Compass Therapeutics stock by expiration.
The most open interest sits at the $3.00 call (1.72K contracts) and the $1.00 put (287 contracts).
Summary generated from market data by MetaCap's automated system. Methodology
CMPX options chain · October 16, 2026
| Calls | Puts | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Last | Bid | Ask | Strike | Bid | Ask | Last | |||||
| 0.13 | 0.00 | 0.70 | 1.00 | 0.05 | 0.15 | 0.08 | |||||
| 0.01 | 0.00 | 0.05 | 2.00 | 0.65 | 1.30 | 1.05 | |||||
| 0.03 | 0.00 | 0.05 | 3.00 | 1.65 | 2.30 | 1.82 | |||||
| 0.11 | 0.00 | 0.05 | 4.00 | 2.35 | 3.40 | 2.80 | |||||
| 0.05 | 0.00 | 0.20 | 5.00 | — | — | — | |||||
In-the-money callsIn-the-money puts. IV = implied volatility, OI = open interest (contracts). Each contract covers 100 shares. Quotes delayed at least 15 minutes.
Frequently asked questions
What is the CMPX put/call ratio?
For the October 16, 2026 expiration, the CMPX put/call ratio based on open interest is 0.12 (371 puts vs 3,078 calls), and 1.33 based on today's volume. A ratio above 1 means more puts than calls.
What is CMPX's implied volatility?
At-the-money implied volatility for CMPX options expiring October 16, 2026 is about 395.3%, an annualized estimate of how much the market expects Compass Therapeutics stock to move.
How many CMPX option expiration dates are there?
CMPX has 8 listed expiration dates, from Oct 16, 2026 to Jan 19, 2029.
What does "in the money" mean?
A call is in the money when the strike price is below the current share price; a put is in the money when the strike is above it. In-the-money contracts have intrinsic value and are shaded in the table.