Mirum Pharmaceuticals (MIRM) Options Chain
NASDAQ: MIRMHealth CareBiotechnology: Pharmaceutical PreparationsUSD
At close: Oct 9, 4:00 PM ET · Delayed 15 min
Expiration date
- Expiration
- Nov 20, 2026
- Days to expiration
- 40
- Share price
- $86.01
- Put/call ratio (OI)
- 0.75
- Put/call ratio (volume)
- 2.20
- Expected move
- ±$23.02
- Open interest (C / P)
- 16 / 12
MIRM options summary
The MIRM options chain for the November 20, 2026 expiration lists 7 call and 5 put contracts, with 40 days until expiration. Open interest stands at 16 calls and 12 puts, a put/call ratio of 0.75, which is fairly balanced between calls and puts. At-the-money implied volatility near the $85.00 strike is 80.9%, which implies the market expects a move of about ±$23.02 (26.8%) in Mirum Pharmaceuticals stock by expiration.
The most open interest sits at the $120.00 call (5 contracts) and the $100.00 put (5 contracts).
Summary generated from market data by MetaCap's automated system. Methodology
MIRM options chain · November 20, 2026
| Calls | Puts | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Last | Bid | Ask | Strike | Bid | Ask | Last | |||||
| — | — | — | 70.00 | 1.30 | 5.50 | 2.55 | |||||
| — | — | — | 75.00 | 3.10 | 7.00 | 3.25 | |||||
| 14.90 | 7.50 | 12.30 | 85.00 | 6.40 | 10.70 | 11.38 | |||||
| — | — | — | 90.00 | 9.00 | 13.50 | 14.78 | |||||
| 2.42 | 3.90 | 8.50 | 95.00 | — | — | — | |||||
| — | — | — | 100.00 | 16.20 | 20.70 | 19.00 | |||||
| 1.10 | 0.05 | 4.90 | 120.00 | — | — | — | |||||
| 2.60 | 0.00 | 4.90 | 125.00 | — | — | — | |||||
| 2.10 | 0.00 | 4.90 | 130.00 | — | — | — | |||||
| 1.75 | 0.00 | 4.90 | 135.00 | — | — | — | |||||
| 1.45 | 0.00 | 4.90 | 140.00 | — | — | — | |||||
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 November 20, 2026 expiration, the MIRM put/call ratio based on open interest is 0.75 (12 puts vs 16 calls), and 2.20 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 November 20, 2026 is about 80.9%, 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.