Ardelyx (ARDX) Options Chain

NASDAQ: ARDXHealth CareBiotechnology: Pharmaceutical PreparationsUSD

3.28+0.01 (+0.31%)

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

Expiration date

Expiration: Jan 15, 2027
Days to expiration: 96
Share price: $3.28
Put/call ratio (OI): 4.99
Put/call ratio (volume): 17.11
ATM implied volatility: 61.7%
Expected move: ±$1.04
Open interest (C / P): 27.84K / 138.94K

ARDX options summary

The ARDX options chain for the January 15, 2027 expiration lists 14 call and 14 put contracts, with 96 days until expiration. Open interest stands at 27,835 calls and 138,936 puts, a put/call ratio of 4.99, which is more bearish, with puts outnumbering calls. At-the-money implied volatility near the $3.00 strike is 61.7%, which implies the market expects a move of about ±$1.04 (31.7%) in Ardelyx stock by expiration.

The most open interest sits at the $5.00 call (12.16K contracts) and the $4.00 put (100.98K contracts).

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

ARDX options chain · January 15, 2027

ARDX 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
106	1	440.6%	2.44	0.40	2.85	1.00	0.00	0.20	0.25	196.9%	1	12
214	1	74.2%	1.45	0.85	1.80	2.00	0.00	0.75	0.12	168.4%	—	100
2,282	15	69.5%	0.55	0.45	0.75	3.00	0.15	0.30	0.18	53.9%	20	35,303
ARDX $3.28
2,556	35	64.1%	0.20	0.15	0.25	4.00	0.80	0.90	0.80	52.3%	10,000	100,982
12,161	312	73.0%	0.08	0.05	0.15	5.00	1.40	2.35	1.70	84.8%	1	1,447
142	20	123.4%	0.10	0.00	0.50	6.00	2.00	3.30	2.32	176.6%	1	13
5,811	97	79.7%	0.05	0.00	0.05	7.00	3.10	4.30	3.55	194.5%	9	477
175	10	90.6%	0.05	0.00	0.05	8.00	4.00	5.30	4.55	209.0%	9	1
21	5	187.9%	0.05	0.00	0.75	9.00	3.10	7.30	3.25	373.6%	5	0
2,610	80	120.3%	0.05	0.00	0.10	10.00	4.70	5.60	4.39	—	125	598
112	10	207.0%	0.05	0.00	0.75	11.00	7.00	8.50	7.44	117.2%	56	3
1,582	5	145.3%	0.07	0.00	0.15	12.00	8.00	9.50	8.55	123.4%	1	0
7	5	301.9%	0.18	0.00	1.75	13.00	9.00	10.50	9.30	129.7%	1	0
56	2	171.1%	0.05	0.00	0.20	15.00	10.70	12.50	11.73	300.8%	1	0

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 ARDX put/call ratio?

For the January 15, 2027 expiration, the ARDX put/call ratio based on open interest is 4.99 (138,936 puts vs 27,835 calls), and 17.11 based on today's volume. A ratio above 1 means more puts than calls.

What is ARDX's implied volatility?

At-the-money implied volatility for ARDX options expiring January 15, 2027 is about 61.7%, an annualized estimate of how much the market expects Ardelyx stock to move.

How many ARDX option expiration dates are there?

ARDX has 6 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.