Mirum Pharmaceuticals (MIRM) Options Chain

NASDAQ: MIRMHealth CareBiotechnology: Pharmaceutical PreparationsUSD

86.01+4.66 (+5.73%)

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

Expiration date

Expiration: Dec 17, 2027
Days to expiration: 432
Share price: $86.01
Put/call ratio (OI): 0.14
Put/call ratio (volume): 0.24
ATM implied volatility: 58.8%
Expected move: ±$55.05
Open interest (C / P): 297 / 42

MIRM options summary

The MIRM options chain for the December 17, 2027 expiration lists 17 call and 6 put contracts, with 432 days until expiration. Open interest stands at 297 calls and 42 puts, a put/call ratio of 0.14, which is tilted bullish, with calls outnumbering puts. At-the-money implied volatility near the $85.00 strike is 58.8%, which implies the market expects a move of about ±$55.05 (64.0%) in Mirum Pharmaceuticals stock by expiration.

The most open interest sits at the $100.00 call (127 contracts) and the $100.00 put (30 contracts).

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

MIRM options chain · December 17, 2027

MIRM 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
5	5	154.2%	48.60	52.50	57.50	70.00	—	—	—	—	—	—
—	—	—	—	—	—	75.00	9.50	14.50	12.50	56.8%	—	10
7	1	60.3%	25.80	22.00	27.00	80.00	—	—	—	—	—	—
87	2	58.8%	23.00	19.50	24.50	85.00	—	—	—	—	—	—
MIRM $86.01
7	1	58.3%	22.88	17.50	22.50	90.00	—	—	—	—	—	—
6	2	58.1%	28.00	16.00	20.50	95.00	0.00	0.00	19.30	—	—	0
127	1	58.3%	17.10	14.60	19.00	100.00	24.00	28.50	28.62	52.2%	2	30
12	—	73.3%	38.38	18.50	23.50	105.00	0.00	0.00	23.50	—	—	0
13	1	56.5%	22.40	11.00	16.00	110.00	0.00	0.00	29.10	—	18	0
2	1	57.6%	18.00	10.50	15.00	115.00	—	—	—	—	—	—
0	60	6.3%	15.57	0.00	0.00	120.00	—	—	—	—	—	—
3	2	69.2%	34.63	12.50	17.50	125.00	36.00	41.00	26.91	29.6%	—	2
0	—	6.3%	13.44	0.00	0.00	130.00	—	—	—	—	—	—
6	1	90.4%	16.50	16.50	21.00	150.00	—	—	—	—	—	—
2	—	66.9%	23.00	6.50	11.50	160.00	—	—	—	—	—	—
2	—	65.5%	21.50	5.50	10.50	165.00	—	—	—	—	—	—
8	5	65.4%	16.20	5.00	10.00	170.00	—	—	—	—	—	—
10	—	65.3%	15.50	4.50	9.50	175.00	—	—	—	—	—	—

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 MIRM put/call ratio?

For the December 17, 2027 expiration, the MIRM put/call ratio based on open interest is 0.14 (42 puts vs 297 calls), and 0.24 based on today's volume. A ratio above 1 means more puts than calls.

What is MIRM's implied volatility?

At-the-money implied volatility for MIRM options expiring December 17, 2027 is about 58.8%, an annualized estimate of how much the market expects Mirum Pharmaceuticals stock to move.

How many MIRM option expiration dates are there?

MIRM has 7 listed expiration dates, from Oct 16, 2026 to Dec 17, 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.