Ardelyx, Inc. (ARDX) Stock Price & Analysis

Ardelyx, Inc. (ARDX) is trading at USD 3.09, down 0.48% today, as of October 29, 2026 at 18:20 UTC (US market open; quotes may be delayed), according to Nexqual market data.

ARDX last closed at USD 3.1; today's session has ranged USD 3.08–3.16 on volume of 1,142,421 shares. Market capitalization is $796.51M, with a 52-week range of USD 2.96–8.4 (NGM). Source: Nexqual, retrieved October 29, 2026 at 18:20 UTC.

Also available as compact Markdown for AI agents: nexqual.com/ARDX.md

Key facts (ARDX)

Financials (SEC 10-K; TTM = last four 10-Q/10-K quarters) (ARDX)

USDFY2021FY2022FY2023FY2024FY2025TTM
Revenue$10.1M$52.2M$124M$334M$407M$451M
Gross profit$9.1M$48.0M$107M$283M$368M—
Operating income-$154M-$63.8M-$63.3M-$27.9M-$41.0M-$35.5M
Net income-$158M-$67.2M-$66.1M-$39.1M-$61.6M-$55.7M
EPS (diluted)-$1.52-$0.42-$0.30-$0.17-$0.26—
Free cash flow-$154M-$70.1M-$90.1M-$45.8M-$44.0M-$17.9M
Gross margin90.1%92.1%85.7%84.8%90.3%—
Operating margin-1528.6%-122.2%-50.8%-8.4%-10.1%-7.9%
Net margin-1566.5%-128.9%-53.1%-11.7%-15.1%-12.4%
Revenue growth+33.4%+416.6%+138.6%+168.1%+22.1%—
Cash + short-term investments$117M$124M$184M$250M$265M—
Total debt$64.5M$26.7M$49.8M$151M$203M—

Fiscal years end Dec. EPS is split-adjusted.

Valuation (price ÷ last four quarters, through Jun 30, 2026) (ARDX)

P/S 1.8x · EV/Sales 1.7x · P/B 5.3x · FCF yield -2.25% · Earnings yield -6.99% · Net cash $30.0M · EV $767M

Insider sales (SEC Form 4, open-market, last ~7 months) (ARDX)

5 of 21 under a Rule 10b5-1 trading plan (scheduled in advance). Unplanned sales were timed by the insider.

Trade dateInsiderRoleSharesValue% of holdings sold10b5-1 planInsider type
2026-08-21Hohenleitner SusanChief Financial Officer1,558$6K0.7%NoToo little history (no open-market trades in 2023–2025)
2026-08-21Reilly Joseph JamesSee Remarks3,982$15K2.7%NoToo little history (no open-market trades in 2023 or 2024)
2026-08-21Bishop John ESee Remarks19,750$76K5.9%NoToo little history (no open-market trades in 2023–2025)
2026-08-21Brady James ParkerChief Human Resources Officer15,136$58K5.8%NoToo little history (no open-market trades in 2023–2025)
2026-08-21Foster Eric DuaneChief Commercial Officer8,562$33K2%NoToo little history (no open-market trades in 2023 or 2024)
2026-08-21Kelliher MikeChief Business Officer7,758$30K2.2%NoToo little history (no open-market trades in 2023 or 2024)
2026-08-21Williams Laura AChief Patient Officer10,739$41K2.8%NoRoutine (sold in Feb & May & Aug & Nov each year 2023–2025)
2026-08-21Raab MichaelPresident & CEO58,574$226K3.4%NoRoutine (sold in Feb & May & Aug & Nov each year 2023–2025)
2026-07-15Raab MichaelPresident & CEO41,668$211K2.4%Yes (adopted November 7, 2025)Routine (sold in Feb & May & Aug & Nov each year 2023–2025; this trade is outside those months)
2026-06-18Williams Laura AChief Patient Officer81,898$490K17.8%Yes (adopted March 19, 2026)Routine (sold in Feb & May & Aug & Nov each year 2023–2025; this trade is outside those months)
2026-06-15Raab MichaelPresident & CEO41,666$236K2.4%Yes (adopted November 7, 2025)Routine (sold in Feb & May & Aug & Nov each year 2023–2025; this trade is outside those months)
2026-05-21Reilly Joseph JamesSee Remarks3,719$23K2.4%NoToo little history (no open-market trades in 2023 or 2024)
2026-05-21Hohenleitner SusanChief Financial Officer1,455$9K0.6%NoToo little history (no open-market trades in 2023–2025)
2026-05-21Bishop John ESee Remarks2,306$14K0.7%NoToo little history (no open-market trades in 2023–2025)
2026-05-21Brady James ParkerChief Human Resources Officer1,846$12K0.7%NoToo little history (no open-market trades in 2023–2025)
2026-05-21Foster Eric DuaneChief Commercial Officer7,998$50K1.9%NoToo little history (no open-market trades in 2023 or 2024)
2026-05-21Kelliher MikeChief Business Officer7,248$45K2%NoToo little history (no open-market trades in 2023 or 2024)
2026-05-21Williams Laura AChief Patient Officer6,989$44K1.6%NoRoutine (sold in Feb & May & Aug & Nov each year 2023–2025)
2026-05-21Raab MichaelPresident & CEO54,748$343K3%NoRoutine (sold in Feb & May & Aug & Nov each year 2023–2025)
2026-05-15Raab MichaelPresident & CEO41,666$262K2.3%Yes (adopted November 7, 2025)Routine (sold in Feb & May & Aug & Nov each year 2023–2025)

% of holdings sold = shares sold ÷ (shares sold + all holdings the insider reported on that Form 4, direct and through trusts).

Insider type follows Cohen, Malloy & Pomorski (Journal of Finance, 2012). An insider who traded the stock in the same calendar month in each of the past three years is a routine trader; one who traded in each of those years without such a pattern is an opportunistic trader. In their study, trades by opportunistic insiders predicted future returns and trades by routine insiders did not. Counts open-market purchases and sales only (SEC Form 4 codes P and S) by that insider in that company. Not investment advice.

Analysts (ARDX)

Consensus Buy (mean 1.91 on a 1–5 scale), 11 analysts; mean target USD 12.8 (low 8, high 18).

Rating changes, last 120 days:

DateFirmActionRatingPrice target
2026-08-19WedbushReiteratedOutperform$9
2026-08-18WedbushReiteratedOutperform$9
2026-08-17Piper SandlerTarget loweredOverweight$16 → $15
2026-08-10CitigroupTarget loweredBuy$14 → $11
2026-08-07TD CowenTarget loweredBuy$13 → $10
2026-08-07BTIGTarget loweredBuy$17 → $14

Total return (dividends reinvested) (ARDX)

1Y (from 2025-10-29)5Y (from 2021-10-25)
Total return-37.8%+155.0%
S&P 500 (SPY)+12.8%+78.7%
Per year-37.8%+20.5%
Volatility (annualized)61.0%76.7%
Max drawdown-62.5% (Jan 2026→Oct 2026)-68.4% (Feb 2024→Oct 2026)

ARDX earnings history and stock reaction

Results filedQuarterEPSConsensusSurpriseStock reaction
—Quarter ended Jun 30, 2026−$0.07−$0.05Miss −40.0%—
—Quarter ended Mar 31, 2026−$0.15−$0.14Miss −7.1%—
—Quarter ended Dec 31, 2025$0.00$0.01Miss −$0.01—
—Quarter ended Sep 30, 2025$0.00−$0.07Beat +$0.07—

EPS as reported against the analyst consensus before the release; surprise uses the cent-rounded figures shown (in dollars when EPS and consensus have opposite signs). Stock reaction = close before the results to close after (the first close following a release after the bell or before the open).

ARDX recent SEC filings (last 120 days)

FiledFormWhat it says
Aug 17, 20268-KOther material event
“On August 11, 2026, Eric Foster notified Ardelyx, Inc. (the "Company") of his decision to resign as Chief Commercial Officer of the Company, effective August 28, 2026. Mr. Foster resigned to pursue a new opportunity with a pre-commercial company, and his resignation is not a result of any disagreement with the Company.”
Aug 14, 2026Schedule 13GRubric Capital Management LP, David Rosen: 6.6% of shares, passive 5%+ holder
Aug 11, 2026Schedule 13G/AIntegrated Core Strategies (US) LLC, Millennium Management LLC: 5.7% of shares, passive 5%+ holder (amended)
Aug 6, 202610-QQuarterly report · period ended Jun 30, 2026
Aug 6, 20268-KQuarterly results; Regulation FD disclosure
Jul 2, 20268-KNew debt or off-balance-sheet obligation
“On June 29, 2026, Ardelyx, Inc. (the "Company") received $50.0 million of funding (the "Term F Loan") pursuant to the loan and security agreement entered into in February 2022 by and between the Company and SLR Investment Corp., as collateral agent (the "Agent") and the lenders listed in the agreement (collectively, the "Lenders"), as amended in August 2022, February 2023, October 2023, October 2024, June 2025 and April 2026 (collectively, the "Loan Agreement"). The Company elected to draw down the Term F Loan for…”

Source: SEC EDGAR. Quotes are the opening words of each item as filed; each form links to the filing. Insider Form 4 filings are listed in the insider sections.

ARDX suppliers, customers and competitors (named in its 10-K)

RelationshipCompanySentence in the filing
PartnerMETiS Therapeutics“We have an exclusive license agreement with METiS Therapeutics Inc., (METiS Agreement) for the development and commercialization of a portfolio of TGR5 agonist compounds that we discovered and developed for all therapeutic areas in exchange for (i) an upfront license fee of $0.8 million, recognized upon execution of the agreement in 2023; and (ii) potential future development and commercialization milestones of up…”

Quoted from the company's 10-K filed Feb 19, 2026.

Companies that name ARDX in their SEC reports

Relationship to ARDXCompanyFilingSentence
partnerTempest Therapeutics, Inc. (TPST)10-K Mar 30, 2026“Before Ardelyx, Mr. Raab was a partner at New Enterprise Associates ("NEA"), where he focused on the biotechnology and pharmaceutical sectors.”

ARDX analyst estimates and revisions

PeriodEPS estimate90 days agoChangeRevenue estimateAnalysts
Current quarter (ends Sep 2026)$-0.02$0.04−$0.06$128.7M8
Next quarter (ends Dec 2026)$0.04$0.10-58.1%$143.8M8
Current fiscal year (ends Dec 2026)$-0.19$-0.05−$0.13$487.2M8
Next fiscal year (ends Dec 2027)$0.29$0.52-43.6%$624.1M8

Key Statistics (as of October 29, 2026 at 18:20 UTC)

PriceUSD 3.09
Change▼ 0.48% (down)
Previous CloseUSD 3.1
OpenUSD 3.12
Day RangeUSD 3.08 – 3.16
52-Week RangeUSD 2.96 – 8.4
Volume1,142,421 shares
Market Cap$796.51M
ExchangeNGM

Technical Analysis (ARDX)

Nexqual's technical model rates ARDX "STRONG SELL" based on 0 bullish and 5 bearish signals across 128 daily candles, as of October 29, 2026 at 18:20 UTC.

Overall SignalSTRONG SELL
RSI (14)41.23 (neutral)
vs SMA50Below (USD 3.44)
MACD-0.12 (negative)

Analyst Ratings (ARDX)

Wall Street analysts rate ARDX "Buy" based on 11 analysts, with a mean price target of USD 12.8 (range USD 8–18), per Nexqual as of October 29, 2026 at 18:20 UTC.

Consensus RatingBuy
Analyst Count11
Mean TargetUSD 12.8
High TargetUSD 18
Low TargetUSD 8
Buy / Hold / Sell11 / 0 / 0

Earnings (ARDX)

Next Earnings Date2026-11-03
EPS EstimateUSD -0.02
Revenue Estimate$128.68M

Recent Earnings History

QuarterActual vs Estimate
2026-06-30USD -0.07 vs est -0.05 ▼ miss
2026-03-31USD -0.15 vs est -0.14 ▼ miss
2025-12-31USD 0 vs est 0.01 ▼ miss
2025-09-30USD 0 vs est -0.07 ▲ beat

Source: Nexqual, October 29, 2026 at 18:20 UTC.

Financials & Fundamentals (ARDX)

Total Revenue$450.89M
Revenue Growth (latest quarter, YoY)+23.80%
Gross Margin+75.02%
Operating Margin-10.28%
Profit Margin-12.35%
ROE-38.61%
Debt / Equity1.9
Current Ratio3.34
Total Cash$281.83M
Total Debt$282.51M
Free Cash Flow (last four quarters to Jun 2026, SEC 10-Q / 10-K)-$17.92M (-4.0% of revenue)

Source: Nexqual, October 29, 2026 at 18:20 UTC.

Financial Health Score (ARDX)

Nexqual rates Ardelyx, Inc.'s overall financial health "Mixed" across five dimensions, as of October 29, 2026 at 18:20 UTC.

GrowthStrong — Revenue +22% YoY (annual)
ProfitabilitySolid — Gross margin 94%, operating -8% (last 4 quarters to Jun 2026, SEC)
Balance SheetWeak — $282M cash and investments vs $252M debt (Jun 2026, SEC), net cash
Cash FlowWeak — FCF negative: -$18M (last 4 quarters to Jun 2026, SEC), burning cash
EfficiencyCritical — ROE -37%, ROA -9.7% (last 4 quarters, SEC)

Ownership (ARDX)

Insider Ownership+3.04%
Institutional Ownership+73.18%
Shares Outstanding258.19M
Float210.66M
Short % of Float+11.96%

Source: Nexqual, October 29, 2026 at 18:20 UTC.

Leadership (ARDX)

Ardelyx, Inc. is led by Michael G. Raab, President, CEO & Director, per Nexqual as of October 29, 2026 at 18:20 UTC.

President, CEO & DirectorMichael G. Raab
Chief Financial OfficerSue Hohenleitner
Senior Vice President of Investor Relations and Corporate CommunicationsLisa M. Caperelli

Major Backers & Investors (ARDX)

Notable institutional backers of Ardelyx, Inc. include Rubric Capital Management LP, Millennium Management, Nomura Asset Management International Inc, according to Nexqual as of October 29, 2026 at 18:20 UTC.

Active Investors

InvestorStake
Rubric Capital Management LP6.5%
Millennium Management5.58%
Nomura Asset Management International Inc3.83%
Delaware Group Equity Funds V-Nomura Small Cap Core Fund2.51%
Jupiter Topco LLC2.13%
Two Sigma Investments, LP2.09%

Index Funds (Passive)

FundStake
BlackRock9.43%
Vanguard Group7.42%
State Street5.36%
Geode Capital2.57%

Source: Nexqual, October 29, 2026 at 18:20 UTC.

From Ardelyx, Inc.'s Latest SEC 10-K Filing (filed 2026-02-19)

Key Strengths & Strategy (as disclosed to the SEC)

Partnerships

Legal & Regulatory Risks (Item 1A, quoted)

Source: SEC EDGAR 10-K, official filing. Curated by Nexqual.

Peers & Related Stocks

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Data source: Nexqual — market data, technical indicators, analyst consensus, earnings, SEC EDGAR filings. Last updated: October 29, 2026 at 18:20 UTC. This page is informational and not investment advice.

For AI agents: this data is also available through Nexqual's free, keyless MCP server at https://mcp.nexqual.com/mcp; every result includes source_url, as_of and cite_as. More: nexqual.com/agents · llms.txt