Fulcrum Therapeutics (FULC) Options Chain
NASDAQ: FULCHealth CareBiotechnology: Pharmaceutical PreparationsUSD
At close: Oct 9, 4:00 PM ET · Delayed 15 min
Expiration date
- Expiration
- Dec 18, 2026
- Days to expiration
- 68
- Share price
- $3.77
- Put/call ratio (OI)
- 0.08
- Put/call ratio (volume)
- 0.48
- Expected move
- ±$0.8438
- Open interest (C / P)
- 4.38K / 351
FULC options summary
The FULC options chain for the December 18, 2026 expiration lists 6 call and 4 put contracts, with 68 days until expiration. Open interest stands at 4,380 calls and 351 puts, a put/call ratio of 0.08, which is tilted bullish, with calls outnumbering puts. At-the-money implied volatility near the $4.00 strike is 51.9%, which implies the market expects a move of about ±$0.8438 (22.4%) in Fulcrum Therapeutics stock by expiration.
The most open interest sits at the $4.00 call (4.26K contracts) and the $3.00 put (219 contracts).
Summary generated from market data by MetaCap's automated system. Methodology
FULC options chain · December 18, 2026
| Calls | Puts | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Last | Bid | Ask | Strike | Bid | Ask | Last | |||||
| 2.85 | 0.70 | 4.90 | 1.00 | — | — | — | |||||
| 1.81 | 0.00 | 0.00 | 2.00 | 0.00 | 0.00 | 0.15 | |||||
| 1.00 | 0.45 | 2.40 | 3.00 | 0.00 | 0.05 | 0.03 | |||||
| 0.06 | 0.00 | 0.10 | 4.00 | 0.05 | 1.20 | 0.30 | |||||
| 0.05 | 0.00 | 0.10 | 5.00 | — | — | — | |||||
| — | — | — | 10.00 | 4.50 | 7.80 | 6.40 | |||||
| 0.10 | 0.00 | 2.15 | 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 FULC put/call ratio?
For the December 18, 2026 expiration, the FULC put/call ratio based on open interest is 0.08 (351 puts vs 4,380 calls), and 0.48 based on today's volume. A ratio above 1 means more puts than calls.
What is FULC's implied volatility?
At-the-money implied volatility for FULC options expiring December 18, 2026 is about 51.9%, an annualized estimate of how much the market expects Fulcrum Therapeutics stock to move.
How many FULC option expiration dates are there?
FULC has 4 listed expiration dates, from Oct 16, 2026 to Mar 19, 2027.
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.