Alpha Tau Medical (DRTS) Options Chain

NASDAQ: DRTSHealth CareMedical/Dental InstrumentsUSD

14.41+0.41 (+2.93%)

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

Expiration date

Expiration: Nov 20, 2026
Days to expiration: 40
Share price: $14.41
Put/call ratio (OI): 0.33
Put/call ratio (volume): 14.08
ATM implied volatility: 66.5%
Expected move: ±$3.17
Open interest (C / P): 3.56K / 1.17K

DRTS options summary

The DRTS options chain for the November 20, 2026 expiration lists 10 call and 6 put contracts, with 40 days until expiration. Open interest stands at 3,562 calls and 1,169 puts, a put/call ratio of 0.33, which is tilted bullish, with calls outnumbering puts. At-the-money implied volatility near the $15.00 strike is 66.5%, which implies the market expects a move of about ±$3.17 (22.0%) in Alpha Tau Medical stock by expiration.

The most open interest sits at the $12.50 call (840 contracts) and the $10.00 put (729 contracts).

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

DRTS options chain · November 20, 2026

DRTS 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
3	2	776.6%	12.70	10.30	13.40	2.50	0.00	0.75	0.34	423.4%	2	4
66	25	216.8%	10.27	8.30	10.90	5.00	0.00	0.40	0.30	219.5%	1	193
22	3	142.2%	7.50	5.80	8.40	7.50	0.00	0.75	0.07	172.1%	700	155
440	1	131.1%	4.60	3.60	5.00	10.00	0.00	0.75	0.20	110.3%	200	729
840	2	71.1%	2.40	1.95	2.95	12.50	0.20	0.55	0.49	59.7%	20	24
DRTS $14.41
678	2	67.5%	0.98	0.75	1.35	15.00	1.20	2.00	1.75	65.4%	6	64
674	1	71.7%	0.40	0.15	0.75	17.50	—	—	—	—	—	—
659	24	95.2%	0.25	0.10	0.75	20.00	—	—	—	—	—	—
70	4	104.3%	0.30	0.00	0.60	22.50	—	—	—	—	—	—
110	2	98.8%	0.25	0.00	0.25	25.00	—	—	—	—	—	—

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 DRTS put/call ratio?

For the November 20, 2026 expiration, the DRTS put/call ratio based on open interest is 0.33 (1,169 puts vs 3,562 calls), and 14.08 based on today's volume. A ratio above 1 means more puts than calls.

What is DRTS's implied volatility?

At-the-money implied volatility for DRTS options expiring November 20, 2026 is about 66.5%, an annualized estimate of how much the market expects Alpha Tau Medical stock to move.

How many DRTS option expiration dates are there?

DRTS has 7 listed expiration dates, from Oct 16, 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.