Verastem (VSTM) Options Chain
NASDAQ: VSTMHealthcareBiotechnologyUSD
At close: Oct 8, 4:00 PM ET · Delayed 15 min
Expiration date
- Expiration
- Oct 16, 2026
- Days to expiration
- 8
- Share price
- $8.11
- Put/call ratio (OI)
- 0.26
- Put/call ratio (volume)
- 0.13
- ATM implied volatility
- 483.4%
- Expected move
- ±$5.80
- Open interest (C / P)
- 4.50K / 1.16K
VSTM options summary
The VSTM options chain for the October 16, 2026 expiration lists 10 call and 6 put contracts, with 8 days until expiration. Open interest stands at 4,499 calls and 1,157 puts, a put/call ratio of 0.26, which is tilted bullish, with calls outnumbering puts. At-the-money implied volatility near the $8.00 strike is 483.4%, which implies the market expects a move of about ±$5.80 (71.6%) in Verastem stock by expiration.
The most open interest sits at the $9.00 call (1.73K contracts) and the $6.00 put (532 contracts).
Summary generated from market data by MetaCap's automated system. Methodology
VSTM options chain · October 16, 2026
| Calls | Puts | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Last | Bid | Ask | Strike | Bid | Ask | Last | |||||
| — | — | — | 3.00 | 0.00 | 0.10 | 0.05 | |||||
| — | — | — | 4.00 | 0.00 | 0.75 | 0.15 | |||||
| 2.90 | 0.00 | 0.00 | 5.00 | — | — | — | |||||
| 2.45 | 0.70 | 4.00 | 6.00 | 0.10 | 0.65 | 0.55 | |||||
| 1.65 | 0.40 | 3.50 | 7.00 | 0.30 | 1.00 | 1.00 | |||||
| 1.50 | 1.45 | 1.75 | 8.00 | 0.85 | 4.90 | 1.03 | |||||
| 1.11 | 0.60 | 1.40 | 9.00 | 1.20 | 4.80 | 2.65 | |||||
| 0.85 | 0.75 | 1.00 | 10.00 | — | — | — | |||||
| 0.62 | 0.50 | 0.75 | 11.00 | — | — | — | |||||
| 0.40 | 0.00 | 4.50 | 12.00 | — | — | — | |||||
| 0.20 | 0.00 | 4.80 | 14.00 | — | — | — | |||||
| 0.24 | 0.00 | 5.00 | 15.00 | — | — | — | |||||
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 VSTM put/call ratio?
For the October 16, 2026 expiration, the VSTM put/call ratio based on open interest is 0.26 (1,157 puts vs 4,499 calls), and 0.13 based on today's volume. A ratio above 1 means more puts than calls.
What is VSTM's implied volatility?
At-the-money implied volatility for VSTM options expiring October 16, 2026 is about 483.4%, an annualized estimate of how much the market expects Verastem stock to move.
How many VSTM option expiration dates are there?
VSTM has 6 listed expiration dates, from Oct 16, 2026 to Jan 21, 2028.
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.