CareDx (CDNA) Options Chain

NASDAQ: CDNAHealth CareMedical SpecialitiesUSD

63.67+1.47 (+2.36%)

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

Expiration date

Expiration: Oct 16, 2026
Days to expiration: 7
Share price: $63.67
Put/call ratio (OI): 0.49
Put/call ratio (volume): 3.42
ATM implied volatility: 67.3%
Expected move: ±$5.93
Open interest (C / P): 556 / 275

CDNA options summary

The CDNA options chain for the October 16, 2026 expiration lists 9 call and 8 put contracts, with 7 days until expiration. Open interest stands at 556 calls and 275 puts, a put/call ratio of 0.49, which is tilted bullish, with calls outnumbering puts. At-the-money implied volatility near the $65.00 strike is 67.3%, which implies the market expects a move of about ±$5.93 (9.3%) in CareDx stock by expiration.

The most open interest sits at the $65.00 call (316 contracts) and the $55.00 put (112 contracts).

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

CDNA options chain · October 16, 2026

CDNA 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
—	—	—	—	—	—	25.00	0.00	0.20	0.22	315.6%	—	1
—	—	—	—	—	—	40.00	0.00	1.95	1.13	271.5%	—	1
7	2	144.5%	16.70	16.70	21.00	45.00	0.00	1.85	0.17	213.2%	20	1
5	5	117.8%	16.30	11.90	16.00	50.00	0.00	1.95	0.28	166.0%	32	28
45	1	103.6%	15.52	7.20	11.50	55.00	0.00	0.40	0.15	73.2%	1	112
147	11	91.7%	4.57	4.10	6.50	60.00	0.10	1.00	1.00	53.5%	1	43
CDNA $63.67
316	4	75.0%	1.67	0.00	4.10	65.00	1.00	4.70	2.90	59.6%	20	60
19	2	69.4%	0.65	0.45	0.65	70.00	4.10	8.90	5.50	139.1%	32	29
13	2	118.7%	0.50	0.00	1.90	75.00	—	—	—	—	—	—
2	2	173.1%	1.03	0.00	1.95	85.00	—	—	—	—	—	—
2	2	195.7%	0.95	0.00	1.95	90.00	—	—	—	—	—	—

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 CDNA put/call ratio?

For the October 16, 2026 expiration, the CDNA put/call ratio based on open interest is 0.49 (275 puts vs 556 calls), and 3.42 based on today's volume. A ratio above 1 means more puts than calls.

What is CDNA's implied volatility?

At-the-money implied volatility for CDNA options expiring October 16, 2026 is about 67.3%, an annualized estimate of how much the market expects CareDx stock to move.

How many CDNA option expiration dates are there?

CDNA has 6 listed expiration dates, from Oct 16, 2026 to Nov 19, 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.