Inspire Medical Systems (INSP) Options Chain

NYSE: INSPHealth CareMedical/Dental InstrumentsUSD

68.89+2.20 (+3.30%)

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

Expiration date

Expiration: Dec 18, 2026
Days to expiration: 68
Share price: $68.89
Put/call ratio (OI): 4.25
Put/call ratio (volume): 0.80
ATM implied volatility: 68.8%
Expected move: ±$20.47
Open interest (C / P): 336 / 1.43K

INSP options summary

The INSP options chain for the December 18, 2026 expiration lists 29 call and 23 put contracts, with 68 days until expiration. Open interest stands at 336 calls and 1,427 puts, a put/call ratio of 4.25, which is more bearish, with puts outnumbering calls. At-the-money implied volatility near the $70.00 strike is 68.8%, which implies the market expects a move of about ±$20.47 (29.7%) in Inspire Medical Systems stock by expiration.

The most open interest sits at the $85.00 call (116 contracts) and the $135.00 put (551 contracts).

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

INSP options chain · December 18, 2026

INSP 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
—	—	—	—	—	—	22.50	0.00	0.75	0.59	145.9%	2	4
—	—	—	—	—	—	25.00	0.00	2.40	1.00	172.2%	1	1
0	10	—	33.00	0.00	0.00	30.00	0.05	0.80	2.50	114.0%	2	2
3	1	83.2%	37.68	32.30	35.90	35.00	0.25	2.95	3.51	131.9%	1	50
4	3	—	12.50	21.60	25.10	40.00	0.00	3.30	4.14	111.7%	1	2
0	—	—	16.51	0.00	0.00	45.00	0.00	3.20	1.98	91.7%	1	21
0	2	—	14.53	0.00	0.00	50.00	0.05	3.60	1.00	78.0%	1	3
0	1	75.8%	20.21	14.80	18.90	55.00	1.00	4.00	2.00	70.2%	1	19
0	—	—	13.70	0.00	0.00	60.00	1.80	6.00	4.30	67.7%	1	14
22	6	69.7%	9.10	8.00	12.30	65.00	5.30	9.50	6.00	79.8%	—	1
INSP $68.89
60	10	71.2%	8.90	6.00	10.00	70.00	6.80	10.30	10.20	66.5%	10	12
0	2	6.3%	4.25	0.00	0.00	75.00	9.20	13.30	12.40	62.9%	1	21
13	1	68.4%	3.60	2.35	6.30	80.00	37.10	40.40	36.00	270.0%	1	151
116	30	65.5%	7.50	1.00	4.80	85.00	0.00	0.00	35.87	—	2	0
16	10	68.5%	1.85	0.20	4.50	90.00	20.80	24.90	20.70	61.5%	1	8
21	10	71.2%	1.70	0.25	3.60	95.00	0.00	0.00	37.80	—	4	0
27	1	73.8%	2.15	0.00	3.20	100.00	0.00	0.00	40.80	—	3	0
1	—	77.4%	1.70	0.00	2.85	105.00	—	—	—	—	—	—
10	5	81.4%	0.70	0.00	2.65	110.00	—	—	—	—	—	—
1	—	85.4%	1.70	0.00	2.50	115.00	71.10	75.40	71.55	323.4%	1	0
1	—	89.4%	1.35	0.00	2.40	120.00	0.00	0.00	67.70	—	16	0
25	3	93.0%	0.35	0.00	2.30	125.00	36.50	43.00	37.60	—	6	67
0	1	25.0%	4.20	0.00	0.00	130.00	42.00	47.00	25.39	—	25	500
2	2	208.8%	33.00	8.70	13.30	135.00	46.50	51.00	29.20	—	—	551
2	—	207.2%	34.57	8.10	12.40	140.00	0.00	0.00	80.00	—	10	0
4	4	201.5%	29.10	6.70	11.50	145.00	—	—	—	—	—	—
1	1	133.6%	7.04	0.50	4.30	150.00	—	—	—	—	—	—
4	4	196.5%	24.80	5.30	10.00	155.00	—	—	—	—	—	—
0	4	50.0%	1.70	0.00	0.00	160.00	—	—	—	—	—	—
0	1	50.0%	0.35	0.00	0.00	180.00	—	—	—	—	—	—
3	2	143.7%	0.15	0.00	2.15	210.00	—	—	—	—	—	—

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 INSP put/call ratio?

For the December 18, 2026 expiration, the INSP put/call ratio based on open interest is 4.25 (1,427 puts vs 336 calls), and 0.80 based on today's volume. A ratio above 1 means more puts than calls.

What is INSP's implied volatility?

At-the-money implied volatility for INSP options expiring December 18, 2026 is about 68.8%, an annualized estimate of how much the market expects Inspire Medical Systems stock to move.

How many INSP option expiration dates are there?

INSP has 8 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.