DXCM Options Chain Analysis

As of previous close (2026-10-02) · OPRA historical data

Spot $85.36 at that close. Nothing on this page comes from the session in progress.

Put/Call (OI)

0.91

38k P / 42k C

Put/Call (Volume)

0.73

451 P / 614 C that session

30d ATM IV

36%

annualized implied move

Call wall

$100

6k contracts

Put wall

$60

6k contracts

Tail hedging

1.1×

deep-OTM puts vs calls

What the positioning says

●Call wall at $100 (6k contracts), 17% above spot — the upside strike the crowd is already parked on; often acts as near-term resistance.
●Put wall at $60 (6k contracts), 30% below spot — the hedge floor; often acts as support.

Open interest by strike

All expiries combined. Amber lines mark the call and put walls; the dashed line is spot.

IV term structure

At-the-money implied volatility per expiry.

Volatility smile

IV by strike — expiry 2026-10-30. A steep left side = expensive downside protection.

30-day implied volatility history

Daily ATM IV (~30 DTE bucket) collected since March 2026. Rising IV into an event = the market bracing; collapsing IV after = the crush.

Open interest by expiry

Expiry	Call OI	Put OI	P/C	Volume that session
2026-10-09	2k	124	0.08	96
2026-10-16	2k	2k	1.20	133
2026-10-23	212	63	0.30	112
2026-10-30	290	81	0.28	36
2026-11-06	274	280	1.02	6
2026-11-13	0	0	—	4
2026-11-20	1k	387	0.38	52
2026-12-18	9k	4k	0.48	29
2027-01-15	17k	16k	0.96	20
2027-03-19	2k	3k	1.55	73
2027-06-17	927	2k	2.69	10
2027-09-17	183	288	1.57	0
2028-01-21	8k	8k	1.06	412
2029-01-19	66	26	0.39	0

Source: Cboe end-of-session option chains, summarized after each US market close and published from the following trading day — OPRA historical data. Under the OPRA plan options data becomes historical, and freely publishable, at the opening of the next trading session; data from the session in progress is never displayed or served here. Open interest is exchange-reported once a day. Research, not investment advice.