ARDX · Ardelyx, Inc.

Track ARDX — free

$4.06 +0.15 (+3.84%) At close · Aug 14

Market Cap

$1.01B

249.19M

Options Chain

Underlying $4.06 · at close Aug 14, 2026 Options Calculator

Positioning

Aug 21, 2026 · 4 days to expiry · 22 contracts · mixed snapshot sessions · Jul 20, 2026–Aug 14, 2026; 4 unknown

Put / call OI

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dated and unknown snapshot sessions

Open interest

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dated and unknown snapshot sessions

Volume

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dated and unknown snapshot sessions

Chain

Click any strike for greeks, breakeven and the calculator

Expiry

Aug 21 4d Sep 18 32d Oct 16 60d Jan 15 151d Jan 21 522d

Calls						Puts
OI	Vol	IV	Δ	Last	Strike	Last	Δ	IV	Vol	OI
109	6	767.4%	0.979	$2.96		$0.22	—	—	1	3
Call · $1 In the money Snapshot session Aug 14, 2026 Last $2.96 Breakeven $3.96 Implied vol 767.4% Delta 0.979 ≈98% ITM Gamma 0.014 Theta -0.019 Vega 0 Open interest 109 Model this call Put · $1 Snapshot session Aug 3, 2026 Last $0.22 Breakeven $0.78 Implied vol — Delta — Gamma — Theta — Vega — Open interest 3 Model this put
8	2	616.8%	0.913	$2.07		—	—	—	—	0
Call · $2 In the money Snapshot session Aug 14, 2026 Last $2.07 Breakeven $4.07 Implied vol 616.8% Delta 0.913 ≈91% ITM Gamma 0.055 Theta -0.048 Vega 0.001 Open interest 8 Model this call Put · $2 Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
1	2	287.3%	0.86	$1.07		—	—	—	—	0
Call · $3 In the money Snapshot session Aug 14, 2026 Last $1.07 Breakeven $4.07 Implied vol 287.3% Delta 0.86 ≈86% ITM Gamma 0.166 Theta -0.031 Vega 0.001 Open interest 1 Model this call Put · $3 Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
972	280	35%	0.658	$0.12		$0.10	-0.408	68.9%	9	832
Call · $4 In the money Snapshot session Aug 14, 2026 Last $0.12 Breakeven $4.12 Implied vol 35% Delta 0.658 ≈66% ITM Gamma 2.298 Theta -0.007 Vega 0.002 Open interest 972 Model this call Put · $4 Snapshot session Aug 14, 2026 Last $0.10 Breakeven $3.90 Implied vol 68.9% Delta -0.408 ≈41% ITM Gamma 1.217 Theta -0.013 Vega 0.002 Open interest 832 Model this put
Underlying $4.06
2.5k	1	232.9%	0.259	$0.05		$1.08	-0.681	285.3%	12	2.5k
Call · $5 Snapshot session Aug 13, 2026 Last $0.05 Breakeven $5.05 Implied vol 232.9% Delta 0.259 ≈26% ITM Gamma 0.302 Theta -0.037 Vega 0.001 Open interest 2.5k Model this call Put · $5 In the money Snapshot session Aug 12, 2026 Last $1.08 Breakeven $3.92 Implied vol 285.3% Delta -0.681 ≈68% ITM Gamma 0.27 Theta -0.049 Vega 0.002 Open interest 2.5k Model this put
4.6k	5	315.3%	0.182	$0.01		$2.10	-0.917	227.5%	2	93
Call · $6 Snapshot session Aug 12, 2026 Last $0.01 Breakeven $6.01 Implied vol 315.3% Delta 0.182 ≈18% ITM Gamma 0.182 Theta -0.041 Vega 0.001 Open interest 4.6k Model this call Put · $6 In the money Snapshot session Aug 10, 2026 Last $2.10 Breakeven $3.90 Implied vol 227.5% Delta -0.917 ≈92% ITM Gamma 0.147 Theta -0.017 Vega 0.001 Open interest 93 Model this put
1.7k	2	362.1%	0.136	$0.03		$2.90	-0.815	421.2%	1	163
Call · $7 Snapshot session Aug 14, 2026 Last $0.03 Breakeven $7.03 Implied vol 362.1% Delta 0.136 ≈14% ITM Gamma 0.129 Theta -0.038 Vega 0.001 Open interest 1.7k Model this call Put · $7 In the money Snapshot session Aug 7, 2026 Last $2.90 Breakeven $4.10 Implied vol 421.2% Delta -0.815 ≈82% ITM Gamma 0.137 Theta -0.055 Vega 0.001 Open interest 163 Model this put
856	3	398.2%	0.101	$0.04		$4.04	-0.831	478.5%	7	2
Call · $8 Snapshot session Aug 4, 2026 Last $0.04 Breakeven $8.04 Implied vol 398.2% Delta 0.101 ≈10% ITM Gamma 0.096 Theta -0.034 Vega 0.001 Open interest 856 Model this call Put · $8 In the money Snapshot session Aug 7, 2026 Last $4.04 Breakeven $3.96 Implied vol 478.5% Delta -0.831 ≈83% ITM Gamma 0.113 Theta -0.058 Vega 0.001 Open interest 2 Model this put
23	2	476%	0.114	$0.05		$4.20	-0.842	529.6%	2	0
Call · $9 Snapshot session Jul 28, 2026 Last $0.05 Breakeven $9.05 Implied vol 476% Delta 0.114 ≈11% ITM Gamma 0.087 Theta -0.045 Vega 0.001 Open interest 23 Model this call Put · $9 In the money Snapshot session Aug 6, 2026 Last $4.20 Breakeven $4.80 Implied vol 529.6% Delta -0.842 ≈84% ITM Gamma 0.097 Theta -0.061 Vega 0.001 Open interest 0 Model this put
4	1	—	—	$0.10		—	-0.725	760.9%	—	0
Call · $10 Snapshot session Jul 20, 2026 Last $0.10 Breakeven $10.10 Implied vol — Delta — Gamma — Theta — Vega — Open interest 4 Model this call Put · $10 In the money Snapshot session Unknown Last — Breakeven — Implied vol 760.9% Delta -0.725 ≈73% ITM Gamma 0.093 Theta -0.123 Vega 0.002 Open interest 0 Model this put
2	4	—	—	$0.05		—	-0.827	656.9%	—	0
Call · $11 Snapshot session Jul 21, 2026 Last $0.05 Breakeven $11.05 Implied vol — Delta — Gamma — Theta — Vega — Open interest 2 Model this call Put · $11 In the money Snapshot session Unknown Last — Breakeven — Implied vol 656.9% Delta -0.827 ≈83% ITM Gamma 0.083 Theta -0.081 Vega 0.001 Open interest 0 Model this put

About this data

Each contract's last price, volume, greeks, implied volatility and open interest belongs to the snapshot session shown in its details; unknown means the provider omitted the timestamp. This chain has mixed snapshot sessions · Jul 20, 2026–Aug 14, 2026; 4 unknown. Cross-contract positioning totals are shown only when every returned row has the same known session. Bid and ask are not included on this plan.

In-the-money strikes are tinted, deepening toward the money, and the bar beside each open-interest figure scales to the heaviest strike shown.

Key facts CIK 1437402 CUSIP 039697107 13F (30d) 241 filings 235 filers Visit website Investor relations