Eton Pharmaceuticals (ETON) Options Chain

NASDAQ: ETONHealth CareBiotechnology: Pharmaceutical PreparationsUSD

54.56-0.19 (-0.35%)

Market open · Delayed 15 min · as of Oct 9, 10:48 AM ET

Expiration date

Expiration: Oct 16, 2026
Days to expiration: 7
Share price: $54.56
Put/call ratio (OI): 1.15
Put/call ratio (volume): 0.47
ATM implied volatility: 57.3%
Expected move: ±$4.33
Open interest (C / P): 755 / 872

ETON options summary

The ETON options chain for the October 16, 2026 expiration lists 10 call and 8 put contracts, with 7 days until expiration. Open interest stands at 755 calls and 872 puts, a put/call ratio of 1.15, which is fairly balanced between calls and puts. At-the-money implied volatility near the $55.00 strike is 57.3%, which implies the market expects a move of about ±$4.33 (7.9%) in Eton Pharmaceuticals stock by expiration.

The most open interest sits at the $60.00 call (302 contracts) and the $55.00 put (792 contracts).

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

ETON options chain · October 16, 2026

ETON 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
10	11	279.5%	19.30	18.90	22.80	35.00	—	—	—	—	—	—
11	1	218.1%	15.33	14.00	17.80	40.00	0.05	2.20	0.08	205.2%	3	5
7	1	156.1%	7.00	8.90	12.80	45.00	0.05	2.50	0.80	155.3%	4	32
176	10	115.7%	6.67	4.30	8.30	50.00	0.15	2.70	1.10	103.9%	4	32
ETON $54.56
131	9	61.4%	2.25	0.55	3.00	55.00	0.10	3.80	2.60	53.2%	5	792
302	1	80.6%	0.58	0.15	1.50	60.00	3.00	6.80	4.30	101.0%	1	9
60	1	108.9%	0.52	0.00	1.35	65.00	7.60	11.30	14.40	118.0%	—	1
55	1	97.3%	0.28	0.00	0.30	70.00	12.40	16.20	19.35	142.7%	—	0
1	1	186.0%	0.40	0.00	2.15	75.00	17.30	21.10	22.10	162.2%	1	1
2	2	251.9%	1.35	0.00	2.15	90.00	—	—	—	—	—	—

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 ETON put/call ratio?

For the October 16, 2026 expiration, the ETON put/call ratio based on open interest is 1.15 (872 puts vs 755 calls), and 0.47 based on today's volume. A ratio above 1 means more puts than calls.

What is ETON's implied volatility?

At-the-money implied volatility for ETON options expiring October 16, 2026 is about 57.3%, an annualized estimate of how much the market expects Eton Pharmaceuticals stock to move.

How many ETON option expiration dates are there?

ETON has 4 listed expiration dates, from Oct 16, 2026 to May 21, 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.