Ardelyx (ARDX) Stock: Why It Moved Today
Updated Oct 19, 2026, 4:00 PM ET · closing price
- Closed at $3.09, +0.00% vs the prior close of $3.09.
- Volume 3.23M shares, 0.7x its 50-day average.
- No new SEC filings since the prior session.
- No new insider buys or sales reported since the prior session.
ARDX ends flat (+0.0%) to $3.09. Closed at $3.09, +0.00% vs the prior close of $3.09. Day range $3.05–$3.13, opened at $3.09.
ARDX daily analysis — what happened
A plain-English, data-only note for every US trading day (today's note updates every 2 hours while the market is open). Newest first; older days stay archived below.
Oct 19, 2026 — ARDX ends flat (+0.0%) to $3.09
- Closed at $3.09, +0.00% vs the prior close of $3.09. Day range $3.05–$3.13, opened at $3.09.
- Volume was 3.23M shares, 0.7x its 50-day average of 4.78M.
- Price is -13.8% vs its 50-day average ($3.59) and -43.8% vs its 200-day average ($5.49).
- 52-week range $3.05–$8.40; today's close sits at 1% of that range, 63.2% below the 52-week high.
Oct 16, 2026 — ARDX slides 5.5% to $3.09, a 52-week low
- Closed at $3.09, -5.50% vs the prior close of $3.27. Day range $3.08–$3.27, opened at $3.26.
- Volume was 5.78M shares, 1.2x its 50-day average of 4.82M.
- Price is -14.3% vs its 50-day average ($3.60) and -43.9% vs its 200-day average ($5.51).
- 52-week range $3.06–$8.40; today's close sits at 1% of that range, 63.2% below the 52-week high.
Oct 15, 2026 — ARDX rises 2.5% to $3.27
- Closed at $3.27, +2.51% vs the prior close of $3.19. Day range $3.19–$3.35, opened at $3.24.
- Volume was 4.07M shares, 0.8x its 50-day average of 4.80M.
- Price is -10.2% vs its 50-day average ($3.64) and -40.8% vs its 200-day average ($5.52).
- 52-week range $3.06–$8.40; today's close sits at 4% of that range, 61.1% below the 52-week high.
Oct 14, 2026 — ARDX rises 2.2% to $3.19
- Closed at $3.19, +2.24% vs the prior close of $3.12. Day range $3.06–$3.25, opened at $3.10.
- Volume was 5.82M shares, 1.2x its 50-day average of 4.74M.
- Price is -13.1% vs its 50-day average ($3.67) and -42.4% vs its 200-day average ($5.53).
- 52-week range $3.06–$8.40; today's close sits at 2% of that range, 62.0% below the 52-week high.
Oct 13, 2026 — ARDX slides 3.4% to $3.12, a 52-week low
- Closed at $3.12, -3.41% vs the prior close of $3.23. Day range $3.09–$3.20, opened at $3.20.
- Volume was 6.87M shares, 1.5x its 50-day average of 4.66M.
- Price is -15.9% vs its 50-day average ($3.71) and -43.7% vs its 200-day average ($5.55).
- 52-week range $3.09–$8.40; today's close sits at 1% of that range, 62.9% below the 52-week high.
Oct 12, 2026 — ARDX dips 1.5% to $3.23, a 52-week low
- Closed at $3.23, -1.52% vs the prior close of $3.28. Day range $3.18–$3.28, opened at $3.28.
- Volume was 3.54M shares, 0.8x its 50-day average of 4.65M.
- Price is -13.8% vs its 50-day average ($3.75) and -41.9% vs its 200-day average ($5.56).
- 52-week range $3.18–$8.40; today's close sits at 1% of that range, 61.5% below the 52-week high.
Oct 9, 2026 — ARDX rises 0.3% to $3.28
- Closed at $3.28, +0.31% vs the prior close of $3.27. Day range $3.21–$3.30, opened at $3.26.
- Volume was 2.36M shares, 0.5x its 50-day average of 4.65M — lighter than usual.
- Price is -13.2% vs its 50-day average ($3.78) and -41.2% vs its 200-day average ($5.57).
- 52-week range $3.18–$8.40; today's close sits at 2% of that range, 61.0% below the 52-week high.
Oct 8, 2026 — ARDX rises 0.3% to $3.27
- Closed at $3.27, +0.31% vs the prior close of $3.26. Day range $3.18–$3.30, opened at $3.23.
- Volume was 6.54M shares, 1.4x its 50-day average of 4.56M.
- Price is -14.3% vs its 50-day average ($3.82) and -41.5% vs its 200-day average ($5.59).
- 52-week range $3.18–$8.40; today's close sits at 2% of that range, 61.1% below the 52-week high.
Oct 7, 2026 — ARDX dips 1.5% to $3.26, a 52-week low
- Closed at $3.26, -1.51% vs the prior close of $3.31. Day range $3.22–$3.35, opened at $3.26.
- Volume was 5.39M shares, 1.2x its 50-day average of 4.49M.
- Price is -15.3% vs its 50-day average ($3.85) and -41.8% vs its 200-day average ($5.60).
- 52-week range $3.22–$8.40; today's close sits at 1% of that range, 61.2% below the 52-week high.
Oct 6, 2026 — ARDX dips 2.4% to $3.31, a 52-week low
- Closed at $3.31, -2.36% vs the prior close of $3.39. Day range $3.23–$3.41, opened at $3.39.
- Volume was 5.82M shares, 1.3x its 50-day average of 4.41M.
- Price is -14.8% vs its 50-day average ($3.89) and -41.0% vs its 200-day average ($5.61).
- 52-week range $3.23–$8.40; today's close sits at 2% of that range, 60.6% below the 52-week high.
Oct 5, 2026 — ARDX rises 1.5% to $3.39
- Closed at $3.39, +1.50% vs the prior close of $3.34. Day range $3.28–$3.42, opened at $3.35.
- Volume was 4.25M shares, 1.0x its 50-day average of 4.36M.
- Price is -13.6% vs its 50-day average ($3.92) and -39.7% vs its 200-day average ($5.62).
- 52-week range $3.28–$8.40; today's close sits at 2% of that range, 59.6% below the 52-week high.
Oct 2, 2026 — ARDX dips 1.2% to $3.34, a 52-week low
- Closed at $3.34, -1.18% vs the prior close of $3.38. Day range $3.29–$3.40, opened at $3.38.
- Volume was 4.09M shares, 0.9x its 50-day average of 4.32M.
- Price is -15.5% vs its 50-day average ($3.95) and -40.7% vs its 200-day average ($5.64).
- 52-week range $3.29–$8.40; today's close sits at 1% of that range, 60.2% below the 52-week high.
ARDX bull case vs bear case (from the data)
- Annual revenue grew 22.1% in the latest fiscal year (SEC XBRL).
- Price is -13.8% vs its 50-day average — short-term trend is down.
- Price is -43.8% vs its 200-day average — below the long-term trend line.
- Latest fiscal-year net income: loss of $61.60M.
- Insider selling outweighs buying: 25 sales vs 0 open-market buys among the 25 most recent reported insider trades (Form 4, last 12 months).
ARDX latest news & SEC filings
Every SEC filing by or about ARDX in the last 120 days, explained in plain English. Updated daily, with a same-day refresh for new filings.
Aug 25, 2026 · Form 4 — Insider trade
Insider trade report (Form 4) — a director, officer or 10%+ owner changed their holdings
Insider holdings update with no common-stock transactions in the table (often options or derivative awards only).
Aug 25, 2026 · Form 4 — Insider trade
Insider trade report (Form 4) — a director, officer or 10%+ owner changed their holdings
Insider holdings update with no common-stock transactions in the table (often options or derivative awards only).
Aug 25, 2026 · Form 4 — Insider trade
Insider trade report (Form 4) — a director, officer or 10%+ owner changed their holdings
Insider holdings update with no common-stock transactions in the table (often options or derivative awards only).
Aug 25, 2026 · Form 4 — Insider trade
Insider trade report (Form 4) — a director, officer or 10%+ owner changed their holdings
Insider holdings update with no common-stock transactions in the table (often options or derivative awards only).
Aug 25, 2026 · Form 4 — Insider trade
Insider trade report (Form 4) — a director, officer or 10%+ owner changed their holdings
- Foster Eric Duane sold 2,598 shares at $3.86 (≈$10.03K) on Aug 21, 2026
- Foster Eric Duane sold 3,389 shares at $3.86 (≈$13.08K) on Aug 21, 2026
- Foster Eric Duane sold 2,575 shares at $3.86 (≈$9.94K) on Aug 21, 2026
- Foster Eric Duane sold 2,598 shares at $3.86 (≈$10.03K) on Aug 21, 2026
- Foster Eric Duane sold 3,389 shares at $3.86 (≈$13.08K) on Aug 21, 2026
- Foster Eric Duane sold 2,575 shares at $3.86 (≈$9.94K) on Aug 21, 2026
- …plus 3 more transaction lines in the filing.
Open-market purchases (P) and sales (S) are shown in colour; awards, exercises and tax withholding are routine pay-related moves. Many sales are pre-planned under 10b5-1 plans.
Aug 25, 2026 · Form 4 — Insider trade
Insider trade report (Form 4) — a director, officer or 10%+ owner changed their holdings
Insider holdings update with no common-stock transactions in the table (often options or derivative awards only).
Aug 17, 2026 · Form 8-K — Major event / current report
Current report — a filing companies must make within 4 business days of a major event
- Item 8.01 — Reported other events the company considers important.
Aug 14, 2026 · Form SCHEDULE 13G — Passive stake (13G)
Passive stake (13G) — an investor reported owning more than 5%
Filed by an outside investor (not the company). It reports a holding of more than 5% of a share class; percentage and holder name are in the filing.
Aug 11, 2026 · Form SCHEDULE 13G/A — Update to a passive 5%+ stake (13G)
Update to a passive 5%+ stake (13G)
Filed by an outside investor (not the company). It reports a holding of more than 5% of a share class; percentage and holder name are in the filing.
Aug 10, 2026 · Form S-8 — Employee share plan registration
Registration of shares for employee stock plans (S-8)
Aug 6, 2026 · Form 10-Q — Quarterly report
Quarterly report (unaudited financial statements for the quarter)
Quarter ended Jun 30, 2026:
- Revenue: $120.88M (prior year $97.66M) (+23.8% vs Jun 30, 2025)
- Net income: -$16.72M (prior year -$19.08M) (loss narrowed vs Jun 30, 2025)
- Diluted EPS: -$0.07 (prior year -$0.08) (loss narrowed vs Jun 30, 2025)
Aug 6, 2026 · Form 8-K — Major event / current report
Current report — a filing companies must make within 4 business days of a major event
- Item 2.02 — Reported results of operations (earnings release).
- Item 7.01 — Released information under Regulation FD (e.g. a presentation or press release).
This is a results-day filing: the earnings press release is attached as an exhibit.
Jul 2, 2026 · Form 8-K — Major event / current report
Current report — a filing companies must make within 4 business days of a major event
- Item 2.03 — Took on a new material debt or financial obligation.
Things to know before you trade ARDX
- Last results release: Aug 6, 2026 (8-K Item 2.02). Previous ones: Apr 30, 2026, Feb 19, 2026, Jan 8, 2026. Based on that rhythm, the next report is likely around Nov 5, 2026 — an estimate, not a confirmed date.
- How much it moves: over the last 20 sessions the average daily move was 1.72% (largest 5.5%).
- Liquidity: about 4.48M shares (≈$13.85M) trade per day on average.
- 52-week position: $3.09 vs a range of $3.05–$8.40 (1% of the range).
- Dividends: no cash dividends in the last 2 years.
- Splits: none in the last 2 years.
- Insider trades (Form 4, last 12 months, recent 25 shown): 0 open-market buys, 25 sales; latest: Laura A Williams sold 3,486 shares on Aug 21, 2026.
- Latest filings: 8-K Aug 17, 2026; 10-Q Aug 6, 2026; 8-K Aug 6, 2026.
- Share count: 249.19M shares outstanding (Jul 30, 2026), +3.4% vs a year earlier.
- Listing: Nasdaq · industry: Pharmaceutical Preparations.
ARDX market data (last 20 sessions)
| Date | Open | High | Low | Close | Volume |
|---|---|---|---|---|---|
| Oct 19, 2026 | 3.09 | 3.13 | 3.05 | 3.09 | 3.23M |
| Oct 16, 2026 | 3.26 | 3.27 | 3.08 | 3.09 | 5.78M |
| Oct 15, 2026 | 3.24 | 3.35 | 3.19 | 3.27 | 4.07M |
| Oct 14, 2026 | 3.10 | 3.25 | 3.06 | 3.19 | 5.82M |
| Oct 13, 2026 | 3.20 | 3.20 | 3.09 | 3.12 | 6.87M |
| Oct 12, 2026 | 3.28 | 3.28 | 3.18 | 3.23 | 3.54M |
| Oct 9, 2026 | 3.26 | 3.30 | 3.21 | 3.28 | 2.36M |
| Oct 8, 2026 | 3.23 | 3.30 | 3.18 | 3.27 | 6.54M |
| Oct 7, 2026 | 3.26 | 3.35 | 3.22 | 3.26 | 5.39M |
| Oct 6, 2026 | 3.39 | 3.41 | 3.23 | 3.31 | 5.82M |
| Oct 5, 2026 | 3.35 | 3.42 | 3.28 | 3.39 | 4.25M |
| Oct 2, 2026 | 3.38 | 3.40 | 3.29 | 3.34 | 4.09M |
| Oct 1, 2026 | 3.46 | 3.46 | 3.36 | 3.38 | 4.11M |
| Sep 30, 2026 | 3.43 | 3.46 | 3.37 | 3.42 | 4.41M |
| Sep 29, 2026 | 3.42 | 3.43 | 3.31 | 3.39 | 4.43M |
| Sep 28, 2026 | 3.40 | 3.44 | 3.38 | 3.41 | 3.32M |
| Sep 25, 2026 | 3.47 | 3.48 | 3.40 | 3.42 | 2.13M |
| Sep 24, 2026 | 3.47 | 3.49 | 3.41 | 3.45 | 3.23M |
| Sep 23, 2026 | 3.60 | 3.62 | 3.42 | 3.48 | 6.28M |
| Sep 22, 2026 | 3.54 | 3.63 | 3.47 | 3.62 | 3.99M |
About Ardelyx
Ardelyx (ARDX) is listed on the Nasdaq and classified by the SEC under “Pharmaceutical Preparations”. Its business address is in FREMONT, CA. State of incorporation: DE. Fiscal year ends December 31. SEC CIK 1437402.
ARDX board of directors & executives
From SEC Form 3/4/5 insider filings made in the last 12 months (date = latest filing).
Directors
| Name | Role | Latest filing |
|---|---|---|
| Robert B Bazemore | Director | Jun 18, 2026 |
| William C Jr Bertrand | Director | Jun 18, 2026 |
| Muna Bhanji | Director | Jun 18, 2026 |
| Onaiza Cadoret-Manier | Director | Jun 18, 2026 |
| David M Mott | Director | Jun 18, 2026 |
| Merdad Parsey | Director | Jun 18, 2026 |
| Michael Raab | President & CEO | Aug 25, 2026 |
| Richard J Rodgers | Director | Jun 18, 2026 |
Executive officers
| Name | Title | Latest filing |
|---|---|---|
| John E Bishop | See Remarks | Aug 25, 2026 |
| James Parker Brady | Chief Human Resources Officer | Aug 25, 2026 |
| Edward R. Conner | Chief Medical Officer | Oct 17, 2025 |
| Rajani Dinavahi | Chief Medical Officer | Apr 3, 2026 |
| Felecia Ettenberg | Chief Legal Officer | Apr 22, 2026 |
| Eric Duane Foster | Chief Commercial Officer | Aug 25, 2026 |
| Elizabeth A Grammer | See Remarks | Nov 25, 2025 |
| Susan Hohenleitner | Chief Financial Officer | Aug 25, 2026 |
| Mike Kelliher | Chief Business Officer | Aug 25, 2026 |
| Michael Raab | President & CEO | Aug 25, 2026 |
| Joseph James Reilly | See Remarks | Aug 25, 2026 |
| Laura A Williams | Chief Patient Officer | Aug 25, 2026 |
Recent insider buys & sales
| Date | Insider | Type | Shares | Price |
|---|---|---|---|---|
| Aug 21, 2026 | Laura A Williams | Sale | 3,486 | $3.86 |
| Aug 21, 2026 | Laura A Williams | Sale | 1,734 | $3.86 |
| Aug 21, 2026 | Laura A Williams | Sale | 2,430 | $3.86 |
| Aug 21, 2026 | Laura A Williams | Sale | 3,089 | $3.86 |
| Aug 21, 2026 | Laura A Williams | Sale | 3,486 | $3.86 |
| Aug 21, 2026 | Laura A Williams | Sale | 1,734 | $3.86 |
| Aug 21, 2026 | Laura A Williams | Sale | 2,430 | $3.86 |
| Aug 21, 2026 | Laura A Williams | Sale | 3,089 | $3.86 |
| Aug 21, 2026 | Laura A Williams | Sale | 3,486 | $3.86 |
| Aug 21, 2026 | Laura A Williams | Sale | 1,734 | $3.86 |
| Aug 21, 2026 | Laura A Williams | Sale | 2,430 | $3.86 |
| Aug 21, 2026 | Laura A Williams | Sale | 3,089 | $3.86 |
| Aug 21, 2026 | Laura A Williams | Sale | 3,486 | $3.86 |
| Aug 21, 2026 | Laura A Williams | Sale | 1,734 | $3.86 |
| Aug 21, 2026 | Laura A Williams | Sale | 2,430 | $3.86 |
ARDX financials (annual, from XBRL filings)
| Fiscal year end | Revenue | Net income | Diluted EPS | Operating cash flow |
|---|---|---|---|---|
| Dec 31, 2025 | $407.32M | $-61.60M | -0.26 | $-42.48M |
| Dec 31, 2024 | $333.62M | $-39.14M | -0.17 | $-44.81M |
| Dec 31, 2023 | $124.46M | $-66.07M | -0.30 | $-89.72M |
| Dec 31, 2022 | $52.16M | $-67.21M | -0.42 | $-70.04M |
| Dec 31, 2021 | $10.10M | $-158.16M | -1.52 | $-152.55M |
Latest balance sheet: total assets $575.89M, total liabilities $426.88M, cash $97.19M (as of Jun 30, 2026).
ARDX earnings / results-day log
| Date | Filing | Close that day |
|---|---|---|
| Aug 6, 2026 | 8-K Item 2.02 (results) | $4.87 |
| Apr 30, 2026 | 8-K Item 2.02 (results) | $6.33 |
| Feb 19, 2026 | 8-K Item 2.02 (results) | $6.74 |
| Jan 8, 2026 | 8-K Item 2.02 (results) | $7.00 |
| Oct 30, 2025 | 8-K Item 2.02 (results) | $5.01 |
| Aug 4, 2025 | 8-K Item 2.02 (results) | $4.39 |
| May 1, 2025 | 8-K Item 2.02 (results) | $5.47 |
| Feb 20, 2025 | 8-K Item 2.02 (results) | $5.72 |
| Jan 13, 2025 | 8-K Item 2.02 (results) | $5.88 |
| Oct 31, 2024 | 8-K Item 2.02 (results) | $5.87 |
| Aug 1, 2024 | 8-K Item 2.02 (results) | — |
| May 2, 2024 | 8-K Item 2.02 (results) | — |
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Information only, not investment advice. BuyMeWhiskey is not a registered investment adviser or broker-dealer; nothing here is a recommendation to buy, sell or hold any security, and there are no price targets. Data comes from SEC EDGAR filings and public end-of-day market data and may be delayed or contain errors. Verify with the company's filings before making decisions. Prices: end-of-day data as of Oct 19, 2026, 4:00 PM ET. Filings: SEC EDGAR. Refreshed every 2 hours during US market hours.