Merit Medical Systems (MMSI) Options Chain

NASDAQ: MMSIHealth CareMedical/Dental InstrumentsUSD

87.21+1.96 (+2.30%)

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

Expiration date

Expiration: Dec 18, 2026
Days to expiration: 68
Share price: $87.21
Put/call ratio (OI): 1.42
Put/call ratio (volume): 0.70
ATM implied volatility: 44.9%
Expected move: ±$16.89
Open interest (C / P): 84 / 119

MMSI options summary

The MMSI options chain for the December 18, 2026 expiration lists 12 call and 12 put contracts, with 68 days until expiration. Open interest stands at 84 calls and 119 puts, a put/call ratio of 1.42, which is more bearish, with puts outnumbering calls. At-the-money implied volatility near the $85.00 strike is 44.9%, which implies the market expects a move of about ±$16.89 (19.4%) in Merit Medical Systems stock by expiration.

The most open interest sits at the $100.00 call (25 contracts) and the $80.00 put (40 contracts).

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

MMSI options chain · December 18, 2026

MMSI 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
—	—	—	—	—	—	40.00	0.00	2.15	0.20	125.3%	—	1
2	2	—	26.52	25.50	29.40	45.00	0.00	1.15	0.25	94.5%	1	2
—	—	—	—	—	—	50.00	0.00	1.15	0.40	81.5%	1	2
8	—	—	18.52	17.00	20.90	55.00	0.00	1.15	0.25	69.5%	1	9
1	1	58.9%	28.70	25.80	29.80	60.00	0.00	1.15	0.45	58.5%	1	26
1	1	52.3%	23.90	21.00	25.00	65.00	0.00	1.20	0.30	59.0%	1	11
5	5	67.5%	21.63	16.30	20.20	70.00	0.00	1.60	0.60	52.7%	1	9
21	1	54.1%	13.95	11.80	15.20	75.00	0.50	3.20	1.05	56.0%	1	8
6	3	65.1%	5.20	11.40	15.50	80.00	0.35	4.20	1.75	50.1%	8	40
5	2	49.3%	5.80	4.60	8.50	85.00	1.50	5.00	3.20	40.5%	7	9
MMSI $87.21
6	5	38.4%	2.58	2.05	4.60	90.00	3.90	8.00	5.70	42.4%	1	2
4	1	47.3%	1.88	0.60	4.20	95.00	—	—	—	—	—	—
25	7	40.5%	1.35	0.00	2.05	100.00	0.00	0.00	22.12	—	—	0
0	5	34.6%	0.38	0.00	0.75	105.00	—	—	—	—	—	—

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 MMSI put/call ratio?

For the December 18, 2026 expiration, the MMSI put/call ratio based on open interest is 1.42 (119 puts vs 84 calls), and 0.70 based on today's volume. A ratio above 1 means more puts than calls.

What is MMSI's implied volatility?

At-the-money implied volatility for MMSI options expiring December 18, 2026 is about 44.9%, an annualized estimate of how much the market expects Merit Medical Systems stock to move.

How many MMSI option expiration dates are there?

MMSI has 5 listed expiration dates, from Oct 16, 2026 to Apr 16, 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.