Omeros (OMER) Options Chain

NASDAQ: OMERHealth CareBiotechnology: Pharmaceutical PreparationsUSD

19.83+0.71 (+3.71%)

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

Expiration date

Expiration: Jan 15, 2027
Days to expiration: 96
Share price: $19.83
Put/call ratio (OI): 0.10
Put/call ratio (volume): 0.11
ATM implied volatility: 67.2%
Expected move: ±$6.83
Open interest (C / P): 12.07K / 1.26K

OMER options summary

The OMER options chain for the January 15, 2027 expiration lists 32 call and 20 put contracts, with 96 days until expiration. Open interest stands at 12,072 calls and 1,258 puts, a put/call ratio of 0.10, which is tilted bullish, with calls outnumbering puts. At-the-money implied volatility near the $20.00 strike is 67.2%, which implies the market expects a move of about ±$6.83 (34.4%) in Omeros stock by expiration.

The most open interest sits at the $10.00 call (1.89K contracts) and the $10.00 put (337 contracts).

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

OMER options chain · January 15, 2027

OMER 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
20	12	—	17.89	16.50	20.80	1.00	0.00	0.05	0.01	264.1%	6	32
43	10	541.4%	8.55	15.00	19.00	2.00	0.00	0.00	0.10	50.0%	1	0
0	30	—	13.50	0.00	0.00	3.00	0.00	0.50	0.65	244.9%	10	210
156	2	271.9%	15.00	15.10	17.90	4.00	0.00	3.00	1.65	375.0%	—	1
144	14	—	5.38	3.00	7.50	5.00	0.00	0.65	0.05	190.2%	2	135
0	5	—	13.51	0.00	0.00	6.00	0.00	0.00	0.21	50.0%	2	0
877	2	219.5%	11.51	11.20	14.00	7.00	0.00	0.00	0.35	50.0%	1	0
20	10	201.5%	12.80	10.20	13.10	8.00	0.00	0.00	0.20	50.0%	4	0
230	210	191.2%	2.10	8.20	12.30	9.00	0.00	0.30	1.85	95.7%	3	7
1,891	2	86.9%	9.39	8.90	11.10	10.00	0.10	0.85	0.20	113.3%	1	337
1	1	185.0%	4.00	6.10	11.00	11.00	0.15	0.45	2.34	88.0%	2	217
48	4	71.2%	7.66	7.00	9.10	12.00	0.00	0.65	0.80	79.1%	1	30
0	10	—	6.20	0.00	0.00	13.00	0.00	0.00	2.45	25.0%	10	0
17	1	90.9%	5.75	5.60	8.10	14.00	0.00	1.20	0.95	73.2%	2	84
1,696	200	79.1%	4.60	4.80	6.90	15.00	0.35	1.40	1.00	73.7%	1	89
30	1	77.7%	5.12	4.60	5.70	16.00	—	—	—	—	—	—
78	1	71.9%	5.51	3.30	5.40	17.00	0.85	1.95	1.34	68.4%	1	13
18	17	71.5%	3.55	2.85	4.70	18.00	—	—	—	—	—	—
303	41	70.3%	2.57	2.45	4.00	19.00	1.60	2.90	2.60	66.5%	10	50
OMER $19.83
1,411	5	69.6%	2.14	1.80	3.70	20.00	1.95	3.50	2.60	64.8%	27	50
6	2	68.8%	1.60	1.45	3.20	21.00	2.60	3.90	3.10	62.8%	1	2
439	103	64.9%	1.50	1.15	2.50	22.00	3.10	4.70	3.80	62.5%	—	1
84	25	67.3%	1.20	1.05	2.20	23.00	—	—	—	—	—	—
192	18	66.7%	1.29	1.00	1.70	24.00	—	—	—	—	—	—
813	2	67.1%	1.08	0.85	1.45	25.00	—	—	—	—	—	—
1,409	1	65.2%	0.75	0.55	1.25	26.00	—	—	—	—	—	—
76	1	63.6%	0.60	0.15	1.25	27.00	—	—	—	—	—	—
552	8	65.3%	0.44	0.10	1.15	28.00	—	—	—	—	—	—
131	1	65.6%	0.50	0.05	1.00	29.00	—	—	—	—	—	—
1,202	1	66.2%	0.40	0.05	0.85	30.00	—	—	—	—	—	—
62	2	71.8%	0.75	0.00	0.85	32.00	—	—	—	—	—	—
123	55	78.1%	0.30	0.00	0.75	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 OMER put/call ratio?

For the January 15, 2027 expiration, the OMER put/call ratio based on open interest is 0.10 (1,258 puts vs 12,072 calls), and 0.11 based on today's volume. A ratio above 1 means more puts than calls.

What is OMER's implied volatility?

At-the-money implied volatility for OMER options expiring January 15, 2027 is about 67.2%, an annualized estimate of how much the market expects Omeros stock to move.

How many OMER option expiration dates are there?

OMER has 8 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.