Erasca (ERAS) Options Chain
NASDAQ: ERASHealth CareBiotechnology: Pharmaceutical PreparationsUSD
At close: Oct 8, 4:00 PM ET · Delayed 15 min
Expiration date
- Expiration
- Oct 16, 2026
- Days to expiration
- 7
- Share price
- $15.46
- Put/call ratio (OI)
- 45.00
- Put/call ratio (volume)
- 0.19
- Expected move
- ±$0.1338
- Open interest (C / P)
- 1 / 45
ERAS options summary
The ERAS options chain for the October 16, 2026 expiration lists 11 call and 9 put contracts, with 7 days until expiration. Open interest stands at 1 calls and 45 puts, a put/call ratio of 45.00, which is more bearish, with puts outnumbering calls. At-the-money implied volatility near the $15.00 strike is 6.3%, which implies the market expects a move of about ±$0.1338 (0.9%) in Erasca stock by expiration.
The most open interest sits at the $2.50 call (1 contracts) and the $5.00 put (40 contracts).
Summary generated from market data by MetaCap's automated system. Methodology
ERAS options chain · October 16, 2026
| Calls | Puts | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Last | Bid | Ask | Strike | Bid | Ask | Last | |||||
| 11.17 | 16.70 | 19.60 | 2.50 | — | — | — | |||||
| — | — | — | 5.00 | 0.00 | 0.50 | 0.20 | |||||
| 11.55 | 0.00 | 0.00 | 7.50 | 0.00 | 0.00 | 0.14 | |||||
| 4.50 | 0.00 | 0.00 | 10.00 | 0.00 | 0.00 | 0.15 | |||||
| 2.05 | 0.00 | 0.00 | 12.50 | 0.00 | 0.00 | 0.08 | |||||
| 1.15 | 0.00 | 0.00 | 15.00 | 0.00 | 0.00 | 0.69 | |||||
| 0.30 | 0.00 | 0.00 | 17.50 | 0.00 | 0.00 | 2.90 | |||||
| 0.15 | 0.00 | 0.00 | 20.00 | 0.00 | 0.00 | 5.40 | |||||
| 0.05 | 0.00 | 0.00 | 22.50 | 0.00 | 0.00 | 7.89 | |||||
| 0.05 | 0.00 | 0.00 | 25.00 | 7.60 | 8.40 | 9.02 | |||||
| 0.05 | 0.00 | 0.00 | 30.00 | — | — | — | |||||
| 0.25 | 0.00 | 0.00 | 35.00 | — | — | — | |||||
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 ERAS put/call ratio?
For the October 16, 2026 expiration, the ERAS put/call ratio based on open interest is 45.00 (45 puts vs 1 calls), and 0.19 based on today's volume. A ratio above 1 means more puts than calls.
What is ERAS's implied volatility?
At-the-money implied volatility for ERAS options expiring October 16, 2026 is about 6.3%, an annualized estimate of how much the market expects Erasca stock to move.
How many ERAS option expiration dates are there?
ERAS has 10 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.