DexCom (DXCM) Options Chain

NASDAQ: DXCMHealth CareMedical/Dental InstrumentsUSD

83.85-0.565 (-0.67%)

Market open · Delayed 15 min · as of Oct 9, 3:25 PM ET

Expiration date

Expiration: Oct 9, 2026
Days to expiration: 0
Share price: $83.86
Put/call ratio (OI): 0.38
Put/call ratio (volume): 1.74
ATM implied volatility: 50.5%
Expected move: ±$2.22
Open interest (C / P): 1.82K / 687

DXCM options summary

The DXCM options chain for the October 9, 2026 expiration lists 23 call and 20 put contracts, expiring today. Open interest stands at 1,820 calls and 687 puts, a put/call ratio of 0.38, which is tilted bullish, with calls outnumbering puts. At-the-money implied volatility near the $84.00 strike is 50.5%, which implies the market expects a move of about ±$2.22 (2.6%) in DexCom stock by expiration.

The most open interest sits at the $90.00 call (534 contracts) and the $80.00 put (422 contracts).

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

DXCM options chain · October 9, 2026

DXCM 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
—	—	—	—	—	—	45.00	0.00	2.15	0.75	868.4%	—	2
—	—	—	—	—	—	50.00	0.00	2.15	1.43	745.3%	—	1
—	—	—	—	—	—	65.00	0.00	2.15	0.31	431.3%	—	1
3	2	299.4%	14.40	12.80	14.60	70.00	—	—	—	—	—	—
1	1	258.6%	10.94	9.70	11.70	73.00	—	—	—	—	—	—
4	3	196.3%	7.82	5.80	7.80	77.00	0.00	2.05	0.26	203.4%	5	7
—	—	—	—	—	—	78.00	0.00	0.75	0.87	127.0%	—	1
—	—	—	—	—	—	79.00	0.00	0.75	0.15	111.1%	14	35
8	2	52.3%	3.50	2.70	3.90	80.00	0.00	0.75	0.30	95.1%	434	422
5	4	56.1%	4.27	1.80	4.20	81.00	0.00	0.75	0.15	78.4%	1	9
1	2	85.9%	4.51	0.80	2.60	82.00	0.00	0.10	0.10	37.1%	1	57
14	5	117.2%	1.35	0.05	2.50	83.00	0.00	0.75	0.05	64.8%	2	37
DXCM $83.86
46	1	51.0%	1.50	0.00	1.65	84.00	0.20	1.70	0.85	50.1%	8	51
113	120	21.1%	0.15	0.00	0.05	85.00	0.25	2.50	1.32	106.3%	1	26
12	2	50.2%	0.17	0.00	0.40	86.00	0.90	3.40	1.15	122.1%	16	25
19	6	116.6%	0.04	0.00	1.75	87.00	2.60	4.20	3.08	70.1%	6	10
54	11	55.5%	0.25	0.00	0.05	88.00	3.60	5.30	3.90	88.9%	1	0
61	1	162.5%	0.26	0.00	2.10	89.00	3.90	6.20	5.20	163.2%	1	0
534	8	67.2%	0.02	0.00	0.05	90.00	5.50	7.20	3.83	103.1%	3	0
108	75	75.8%	0.20	0.00	0.05	91.00	6.60	7.80	5.00	87.5%	3	0
95	1	210.0%	0.05	0.00	2.15	92.00	7.50	9.20	8.60	126.0%	1	1
26	2	224.2%	0.05	0.00	2.15	93.00	—	—	—	—	—	—
2	1	237.9%	1.00	0.00	2.15	94.00	—	—	—	—	—	—
500	2	108.6%	0.01	0.00	0.05	95.00	9.90	12.20	11.22	249.8%	2	2
152	1	264.1%	0.30	0.00	2.15	96.00	—	—	—	—	—	—
30	30	288.9%	0.55	0.00	2.15	98.00	—	—	—	—	—	—
2	1	300.8%	0.71	0.00	2.15	99.00	—	—	—	—	—	—
30	5	312.5%	0.01	0.00	2.15	100.00	—	—	—	—	—	—

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 DXCM put/call ratio?

For the October 9, 2026 expiration, the DXCM put/call ratio based on open interest is 0.38 (687 puts vs 1,820 calls), and 1.74 based on today's volume. A ratio above 1 means more puts than calls.

What is DXCM's implied volatility?

At-the-money implied volatility for DXCM options expiring October 9, 2026 is about 50.5%, an annualized estimate of how much the market expects DexCom stock to move.

How many DXCM option expiration dates are there?

DXCM has 14 listed expiration dates, from Oct 9, 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.