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Ardelyx, Inc. (ARDX) stock

ARDXNasdaqPharmaceutical PreparationsFiscal year ends December 31
Financials through Q2 FY2026, quarter ended Jun 30, 2026Last filing: 10-Q on Nov 3, 2026Score 9/3059% below fair value
$3.12−0.01 (-0.32%)

Close on Nov 12, 2026Market cap $777.47MP/E –Yield –

Ardelyx, Inc. grew revenue 16.8% to $450.89M over the twelve months to Jun 30, 2026. Free cash flow was -$17.92M. At the latest close the market valued the company at $777.47M.

Revenue
$450.89M
+16.8% vs. a year earlier
Operating income
-$35.45M
TTM Q2 2026
Free cash flow
-$17.92M
TTM Q2 2026
EPS, diluted
-$0.22
TTM Q2 2026

Key statistics

Valuation at the latest close; fundamentals over the trailing twelve months, balances at Jun 30, 2026

Valuation

Market cap
$777.47M
P/E ratio
–
Price to sales
1.72
Price to book
5.22
Dividend yield
–
Free cash flow yield
-2.30%

Fundamentals

Revenue
$450.89M
Net income
-$55.70M
EPS, diluted
-$0.22
Free cash flow
-$17.92M
Book value per share
$0.60
Diluted shares
248M

Trading

Next earnings
Feb 18, 2027 (estimated, during market hours)
Previous close
$3.13
Open
$3.15
Day's range
$3.01 – $3.17
Volume
4,034,894
Average volume (20 days)
4,883,671
Index membership
Russell 2000 (since Jun 2023), Russell 3000 (since Aug 2023)
Beta (5 years)
0.95
52-week range
$2.80 – $8.40
RSI (14 days)
48.7
Volatility (1 year)
58.2%
Relative volume
0.93×
WACC
9.8%

Index membership is inferred from the holdings of funds that track each index (IWM, IWV), as reported to the SEC for Jun 30, 2026. Join dates come from quarterly fund reports since 2019, so they are accurate to the quarter.

Market cap history

Month-end market cap since 2014, using shares outstanding reported at the time

Total return vs. the S&P 500

Price change plus reinvested dividends, to the close on Nov 12, 2026. The S&P 500 is measured by the SPY fund.

PeriodARDXS&P 500DifferenceARDX per yearS&P 500 per year
1 month-3.4%-2.7%−0.7 pts
3 months-21.4%-1.7%−19.7 pts
Year to date-46.5%+11.9%−58.4 pts
1 year-48.3%+12.0%−60.3 pts
3 years-12.4%+78.2%−90.5 pts-4.3%+21.2%
5 years+178.6%+73.2%+105.3 pts+22.7%+11.6%
10 years-80.4%+309.6%−390.1 pts-15.1%+15.1%

Fifteen years at a glance

Fiscal years 2011 to 2025 and trailing twelve months, USD

Revenue

$450.89M+16.8% YoY

Gross profit

$425.49M+29.9% YoY

Operating income

-$35.45M

Net income

-$55.70M

EPS, diluted

-$0.22

Free cash flow

-$17.92M
Reported periodTrailing twelve months

Press releases

Releases Ardelyx filed with the SEC as exhibits to Form 8-K or 6-K

All press releases and earnings

About Ardelyx

Pharmaceutical Preparations

Ardelyx is a commercial-stage biopharmaceutical company that discovers, develops, and commercializes small molecule therapies for unmet medical needs. It markets two products based on the active ingredient tenapanor: IBSRELA, which treats adults with irritable bowel syndrome with constipation, and XPHOZAH, which reduces serum phosphorus in adults with chronic kidney disease on dialysis. The company also develops pipeline candidates, including next-generation NHE3 inhibitors. Its end customers are adult gastrointestinal and kidney disease patients, reached through healthcare prescribers and commercial partners.

Company profile, executives and history

Ardelyx stock: common questions

What is Ardelyx's stock price?

ARDX closed at $3.12 on Nov 12, 2026, down 0.32% on the day. Over the past 52 weeks it traded between $2.80 and $8.40.

What is Ardelyx's market cap?

Ardelyx was worth $777.47M at the close on Nov 12, 2026: the share price times the diluted shares outstanding.

What is ARDX's P/E ratio?

Ardelyx lost money over the twelve months to Jun 30, 2026 (diluted EPS -$0.22), so it has no meaningful P/E ratio.

How much revenue does Ardelyx make?

Ardelyx reported revenue of $450.89M for the twelve months to Jun 30, 2026, up 16.8% from a year earlier.

Does Ardelyx pay a dividend?

No. Ardelyx has not paid a cash dividend over the last twelve months.

When does Ardelyx report earnings next?

Ardelyx is expected to report Q4 FY2026 results on Feb 18, 2027, during market hours. The date is estimated from its past reporting pattern until the company confirms it.

How has ARDX stock performed over the past year?

Including dividends, ARDX returned -48.3% over the past year, against +12.0% for the S&P 500.

How many ARDX shares are sold short?

29M shares were sold short at the latest FINRA report, 12.59% of the float, or 7.5 days of average trading volume.

Who are Ardelyx's competitors?

Companies most similar to Ardelyx by business, industry and size include IRWD, AKBA, XERS, MIRM, TVTX.

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