Ultragenyx Pharmaceutical (RARE) Options Chain

NASDAQ: RAREHealth CareBiotechnology: Pharmaceutical PreparationsUSD

15.48+0.19 (+1.24%)

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

Expiration date

Expiration: Feb 19, 2027
Days to expiration: 131
Share price: $15.48
Put/call ratio (OI): 1.13
Put/call ratio (volume): 0.63
ATM implied volatility: 71.5%
Expected move: ±$6.63
Open interest (C / P): 4.21K / 4.75K

RARE options summary

The RARE options chain for the February 19, 2027 expiration lists 15 call and 11 put contracts, with 131 days until expiration. Open interest stands at 4,211 calls and 4,745 puts, a put/call ratio of 1.13, which is fairly balanced between calls and puts. At-the-money implied volatility near the $15.00 strike is 71.5%, which implies the market expects a move of about ±$6.63 (42.8%) in Ultragenyx Pharmaceutical stock by expiration.

The most open interest sits at the $17.50 call (1.31K contracts) and the $15.00 put (1.58K contracts).

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

RARE options chain · February 19, 2027

RARE 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
115	10	74.0%	6.60	5.30	6.60	10.00	0.40	0.55	0.66	74.3%	5	221
137	21	76.5%	4.23	3.80	4.80	12.50	0.55	1.20	1.07	60.9%	39	248
644	5	75.2%	2.97	2.45	3.50	15.00	1.80	2.65	2.17	67.7%	73	1,585
RARE $15.48
1,307	176	73.3%	2.00	1.55	2.40	17.50	3.30	4.30	3.70	68.0%	38	1,091
526	27	74.6%	1.30	1.00	1.75	20.00	5.10	6.40	7.54	70.4%	2	547
225	4	73.5%	0.95	0.55	1.25	22.50	7.00	8.50	8.70	67.8%	13	42
81	1	74.2%	0.60	0.30	0.95	25.00	9.20	10.70	10.52	66.2%	1	1,008
94	2	75.5%	0.50	0.00	0.90	27.50	11.30	13.50	8.70	72.2%	—	1
20	1	71.9%	0.65	0.00	0.50	30.00	12.80	16.50	10.10	62.9%	—	1
2	1	79.6%	6.20	0.00	0.55	32.50	15.30	18.90	12.70	63.3%	—	1
3	1	81.6%	0.45	0.00	0.45	35.00	—	—	—	—	—	—
2	1	77.7%	5.00	0.00	0.25	37.50	—	—	—	—	—	—
15	9	91.2%	0.05	0.00	0.35	42.50	25.70	28.70	27.82	91.8%	9	0
1,001	2	102.9%	0.05	0.00	0.45	47.50	—	—	—	—	—	—
39	25	110.3%	2.60	0.00	0.55	50.00	—	—	—	—	—	—

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 RARE put/call ratio?

For the February 19, 2027 expiration, the RARE put/call ratio based on open interest is 1.13 (4,745 puts vs 4,211 calls), and 0.63 based on today's volume. A ratio above 1 means more puts than calls.

What is RARE's implied volatility?

At-the-money implied volatility for RARE options expiring February 19, 2027 is about 71.5%, an annualized estimate of how much the market expects Ultragenyx Pharmaceutical stock to move.

How many RARE option expiration dates are there?

RARE has 11 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.