Erasca (ERAS) Options Chain

NASDAQ: ERASHealth CareBiotechnology: Pharmaceutical PreparationsUSD

16.03+0.57 (+3.69%)

At close: Oct 9, 4:00 PM ET · Delayed 15 min

Expiration date

Expiration: Jan 21, 2028
Days to expiration: 468
Share price: $16.03
Put/call ratio (OI): 0.80
Put/call ratio (volume): 0.19
ATM implied volatility: 77.6%
Expected move: ±$14.09
Open interest (C / P): 3.07K / 2.46K

ERAS options summary

The ERAS options chain for the January 21, 2028 expiration lists 12 call and 9 put contracts, with 468 days until expiration. Open interest stands at 3,069 calls and 2,462 puts, a put/call ratio of 0.80, which is fairly balanced between calls and puts. At-the-money implied volatility near the $15.00 strike is 77.6%, which implies the market expects a move of about ±$14.09 (87.9%) in Erasca stock by expiration.

The most open interest sits at the $35.00 call (978 contracts) and the $12.50 put (856 contracts).

Summary generated from market data by MetaCap's automated system. Methodology

ERAS options chain · January 21, 2028

ERAS calls and puts by strike price. Shaded cells are in the money.
Calls							Puts
OI	Vol	IV	Last	Bid	Ask	Strike	Bid	Ask	Last	IV	Vol	OI
21	1	221.1%	11.80	11.60	14.90	2.50	—	—	—	—	—	—
31	7	83.9%	11.00	9.70	13.20	5.00	0.00	5.00	2.03	181.3%	3	3
207	1	82.1%	8.80	7.60	11.70	7.50	0.05	4.50	2.75	116.7%	2	4
144	2	82.9%	7.20	6.30	10.20	10.00	0.55	4.50	2.71	89.7%	20	413
88	18	84.0%	6.20	5.10	9.20	12.50	1.15	5.20	3.50	76.0%	2	856
161	14	83.1%	5.80	4.10	8.20	15.00	2.15	6.70	5.05	72.2%	1	608
ERAS $16.03
192	31	81.4%	5.10	3.40	7.10	17.50	3.80	8.20	6.70	71.0%	31	15
463	44	82.3%	4.30	4.30	5.00	20.00	5.80	9.90	8.60	71.5%	1	563
40	10	76.4%	3.05	1.95	5.40	22.50	0.00	0.00	13.60	—	—	0
114	20	76.0%	3.53	1.65	4.70	25.00	12.90	16.60	16.30	112.4%	—	0
630	20	83.9%	2.13	1.80	4.20	30.00	—	—	—	—	—	—
978	154	84.4%	2.10	1.75	3.20	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 January 21, 2028 expiration, the ERAS put/call ratio based on open interest is 0.80 (2,462 puts vs 3,069 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 January 21, 2028 is about 77.6%, 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.