BioMarin Pharmaceutical (BMRN) Options Chain

NASDAQ: BMRNHealth CareBiotechnology: Pharmaceutical PreparationsUSD

54.80-0.095 (-0.17%)

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

After hours: 54.80 0.00%

Expiration date

Expiration: Oct 16, 2026
Days to expiration: 7
Share price: $54.80
Put/call ratio (OI): 0.43
Put/call ratio (volume): 0.26
ATM implied volatility: 40.8%
Expected move: ±$3.10
Open interest (C / P): 5.78K / 2.47K

BMRN options summary

The BMRN options chain for the October 16, 2026 expiration lists 20 call and 15 put contracts, with 7 days until expiration. Open interest stands at 5,781 calls and 2,467 puts, a put/call ratio of 0.43, which is tilted bullish, with calls outnumbering puts. At-the-money implied volatility near the $55.00 strike is 40.8%, which implies the market expects a move of about ±$3.10 (5.6%) in BioMarin Pharmaceutical stock by expiration.

The most open interest sits at the $62.50 call (1.39K contracts) and the $60.00 put (901 contracts).

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

BMRN options chain · October 16, 2026

BMRN 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
0	6	—	35.00	0.00	0.00	30.00	—	—	—	—	—	—
—	—	—	—	—	—	37.50	0.10	0.75	0.51	180.7%	10	11
0	1	—	15.27	0.00	0.00	40.00	0.00	2.25	0.50	206.8%	2	2
—	—	—	—	—	—	42.50	0.00	0.00	1.54	50.0%	4	0
2	2	212.3%	10.30	11.20	13.40	45.00	0.00	0.25	0.47	81.0%	1	11
70	70	526.3%	13.25	17.40	21.40	47.50	0.00	2.20	0.30	121.0%	4	40
0	2	—	19.30	0.00	0.00	50.00	0.00	1.10	0.30	69.4%	11	14
80	67	409.3%	8.75	12.80	15.10	52.50	0.15	0.50	0.20	42.6%	17	142
BMRN $54.80
308	294	40.1%	1.15	0.90	1.20	55.00	0.80	1.45	1.25	41.5%	26	342
959	32	64.5%	0.30	0.05	1.05	57.50	1.10	4.90	2.98	102.0%	2	579
604	2	66.8%	0.05	0.00	1.10	60.00	3.30	7.30	5.10	124.0%	5	901
1,386	22	54.3%	0.05	0.00	0.10	62.50	6.00	9.70	6.30	58.8%	1	40
790	7	97.6%	0.05	0.00	1.00	65.00	8.20	12.10	8.90	158.3%	27	385
252	1	119.3%	0.01	0.00	1.25	67.50	10.60	14.60	8.30	176.0%	10	0
603	2	92.6%	0.10	0.00	0.25	70.00	13.40	17.10	10.64	78.5%	10	0
539	2	170.9%	0.05	0.00	2.15	72.50	—	—	—	—	—	—
97	1	112.9%	0.05	0.00	0.25	75.00	18.40	22.10	11.12	96.5%	6	0
16	1	196.6%	0.05	0.00	2.15	77.50	—	—	—	—	—	—
50	2	104.7%	0.05	0.00	0.05	80.00	—	—	—	—	—	—
25	2	118.8%	0.05	0.00	0.05	85.00	—	—	—	—	—	—
0	—	50.0%	0.25	0.00	0.00	90.00	—	—	—	—	—	—
0	—	50.0%	0.69	0.00	0.00	95.00	—	—	—	—	—	—

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 BMRN put/call ratio?

For the October 16, 2026 expiration, the BMRN put/call ratio based on open interest is 0.43 (2,467 puts vs 5,781 calls), and 0.26 based on today's volume. A ratio above 1 means more puts than calls.

What is BMRN's implied volatility?

At-the-money implied volatility for BMRN options expiring October 16, 2026 is about 40.8%, an annualized estimate of how much the market expects BioMarin Pharmaceutical stock to move.

How many BMRN option expiration dates are there?

BMRN has 7 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.