ARDELYX INC (ARDX)
Institutional ownership reported to the SEC as of Q2 2026, across 32 quarters.
Institutions report 177,453,794 shares against 249,187,572 outstanding. Shares only - option lines are excluded, which is why this can be compared with the company at all. The count comes from the cover page of the company's own most recent report, so it is dated when that was filed rather than at quarter end.
Calls and puts are the parts of reported value carried in derivative lines rather than shares, and they point in opposite directions: a manager holding calls is positioned for the security, one holding puts against it - or hedging shares they already own, which is why index funds carry so many. Most sites add the two together and report one figure, which averages away the only interesting part.
Holders
| Filer | Value | Shares | Their book | Held | Change |
|---|---|---|---|---|---|
| BlackRock, Inc. | $119.9M | 23,504,630 | 0.00% | 8q | +11.1%+$11.9M |
| Rubric Capital Management LP | $82.6M | 16,202,700 | 0.76% | 2q | +770.7%+$73.1M |
| MILLENNIUM MANAGEMENT LLC | $72.8M incl. $1.9M options CALL+PUT | 13,900,773 | 0.03% | 10q | -22.1%-$20.6M |
| STATE STREET CORP | $68.1M | 13,356,128 | 0.00% | 31q | -1.8%-$1.3M |
| VANGUARD CAPITAL MANAGEMENT LLC | $53.4M | 10,471,494 | 0.00% | 2q | +1.0%+$540.5K |
| NOMURA ASSET MANAGEMENT INTERNATIONAL INC. | $48.7M | 9,546,732 | 0.07% | 3q | +16.9%+$7.0M |
| VANGUARD PORTFOLIO MANAGEMENT LLC | $40.9M | 8,026,774 | 0.00% | 2q | +20.5%+$7.0M |
| GEODE CAPITAL MANAGEMENT, LLC | $32.7M | 6,401,736 | 0.00% | 31q | +6.6%+$2.0M |
| Jupiter Topco LLC | $27.0M | 5,302,311 | 0.01% | new | FIRST |
| TWO SIGMA INVESTMENTS, LP | $26.6M | 5,209,823 | 0.02% | 15q | +21.9%+$4.8M |
| Nuveen, LLC | $20.4M | 3,997,099 | 0.00% | 6q | -23.6%-$6.3M |
| GOLDMAN SACHS GROUP INC | $18.8M | 3,685,034 | 0.00% | 31q | +14.6%+$2.4M |
| AIGH Capital Management LLC | $16.3M | 3,200,000 | 1.03% | new | NEW |
| MORGAN STANLEY | $12.2M | 2,389,546 | 0.00% | 35q | +39.8%+$3.5M |
| AQR CAPITAL MANAGEMENT LLC | $11.8M | 2,316,220 | 0.00% | 13q | -5.1%-$628.5K |
| NORTHERN TRUST CORP | $11.6M | 2,280,143 | 0.00% | 31q | +10.1%+$1.1M |
| Rock Springs Capital Management LP | $11.4M | 2,241,769 | 0.56% | 7q | -2.5%-$294.3K |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $11.3M | 2,211,760 | 0.00% | 31q | +4.6%+$498.1K |
| BANK OF AMERICA CORP /DE/ | $11.0M | 2,163,500 | 0.00% | 31q | -7.4%-$884.8K |
| Qube Research & Technologies Ltd | $10.7M | 2,090,675 | 0.01% | 3q | -14.2%-$1.8M |
| JONES FINANCIAL COMPANIES LLLP | $9.8M | 1,765,932 | 0.00% | 9q | -5.0%-$515.9K |
| VANGUARD FIDUCIARY TRUST CO | $8.9M | 1,754,819 | 0.00% | 2q | +4.6%+$391.2K |
| Eversept Partners, LP | $8.6M | 1,678,345 | 0.44% | 4q | -24.7%-$2.8M |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | $8.3M incl. $3.6M options CALL+PUT | 916,037 | 0.00% | 29q | +30.5%+$1.9M |
| J. Goldman & Co LP | $8.1M | 1,579,828 | 0.21% | 5q | -47.3%-$7.2M |
| CITADEL ADVISORS LLC | $7.2M incl. $2.0M options CALL+PUT | 1,030,174 | 0.00% | 29q | -70.3%-$17.1M |
| Invesco Ltd. | $7.0M | 1,368,868 | 0.00% | 15q | +337.7%+$5.4M |
| FIRST TRUST ADVISORS LP | $6.6M | 1,301,624 | 0.00% | 5q | -13.2%-$1.0M |
| Hennion & Walsh Asset Management, Inc. | $6.2M | 1,211,690 | 0.18% | 13q | +21.0%+$1.1M |
| SCHRODER INVESTMENT MANAGEMENT GROUP | $6.1M | 1,161,238 | 0.00% | 3q | +176.6%+$3.9M |
| RENAISSANCE TECHNOLOGIES LLC | $4.6M | 892,593 | 0.01% | 6q | -29.9%-$1.9M |
| PANAGORA ASSET MANAGEMENT INC | $4.5M | 890,944 | 0.01% | new | NEW |
| BNP PARIBAS FINANCIAL MARKETS | $4.1M | 810,322 | 0.00% | 31q | +16.0%+$569.0K |
| DEUTSCHE BANK AG\ | $3.9M | 770,910 | 0.00% | 34q | +8.8%+$317.8K |
| ExodusPoint Capital Management, LP | $3.8M | 752,923 | 0.02% | new | NEW |
| Bank of New York Mellon Corp | $3.8M | 749,676 | 0.00% | 31q | +7.0%+$249.4K |
| Squarepoint Ops LLC | $3.6M | 715,262 | 0.00% | 5q | +2.6%+$91.7K |
| SECTOR GAMMA AS | $3.5M | 686,844 | 0.76% | 2q | +33.1%+$870.6K |
| Trexquant Investment LP | $3.4M | 660,586 | 0.02% | 10q | -17.9%-$735.2K |
| Redmile Group, LLC | $3.3M | 641,750 | 0.22% | 2q | -12.5%-$467.2K |
| RAYMOND JAMES FINANCIAL INC | $3.1M incl. $250.0K options CALL | 562,672 | 0.00% | 7q | +15.6%+$421.1K |
| UBS Group AG | $2.8M | 551,721 | 0.00% | 31q | -19.9%-$698.3K |
| Jump Financial, LLC | $2.7M | 536,981 | 0.02% | new | NEW |
| Krensavage Asset Management, LLC | $2.7M | 534,523 | 1.04% | 2q | +6.9%+$176.1K |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | $2.5M | 486,412 | 0.00% | 14q | +10.4%+$233.3K |
| Caption Management, LLC | $2.4M incl. $1.8M options CALL+PUT | 130,000 | 0.01% | 3q | +24.8%+$485.8K |
| MACKENZIE FINANCIAL CORP | $2.4M | 474,094 | 0.00% | new | NEW |
| Swiss National Bank | $2.4M | 467,600 | 0.00% | 14q | -2.7%-$67.3K |
| HUSSMAN STRATEGIC ADVISORS, INC. | $2.1M | 420,000 | 0.49% | new | NEW |
| GROUP ONE TRADING LLC | $2.1M incl. $1.6M options CALL+PUT | 105,903 | 0.00% | 31q | -12.0%-$287.2K |
| Universal- Beteiligungs- und Servicegesellschaft mbH | $2.1M | 411,386 | 0.00% | 6q | +15.2%+$276.5K |
| SIMPLEX TRADING, LLC | $1.9M incl. $1.2M options CALL+PUT | 151,427 | 0.00% | 29q | -13.4%-$299.4K |
| JANE STREET GROUP, LLC | $1.9M CALL+PUT | options only | 0.00% | 25q | OPTIONS |
| PRICE T ROWE ASSOCIATES INC /MD/ | $1.8M | 359,635 | 0.00% | 15q | +22.4%+$336.4K |
| Clay Northam Wealth Management, LLC | $1.7M | 334,115 | 0.84% | 11q | +0.6%+$11.0K |
| CITIGROUP INC | $1.6M | 311,021 | 0.00% | 31q | +370.3%+$1.2M |
| ALLIANCEBERNSTEIN L.P. | $1.6M | 264,770 | 0.00% | 13q | HELD |
| Raiffeisen Bank International AG | $1.6M | 300,000 | 0.02% | 3q | HELD |
| RHUMBLINE ADVISERS | $1.6M | 305,800 | 0.00% | 13q | +4.8%+$71.2K |
| DIADEMA PARTNERS LP | $1.5M | 303,025 | 0.20% | new | NEW |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM | $1.5M | 295,635 | 0.00% | 14q | -2.5%-$38.3K |
| Y-Intercept (Hong Kong) Ltd | $1.5M | 290,254 | 0.03% | 5q | -35.6%-$818.5K |
| WELLS FARGO & COMPANY/MN | $1.4M | 280,470 | 0.00% | 31q | +96.1%+$700.9K |
| Knott David M Jr | $1.3M | 263,168 | 0.71% | 2q | +27.1%+$286.5K |
| Freestone Grove Partners LP | $1.3M | 253,692 | 0.01% | 7q | -86.5%-$8.3M |
| JPMORGAN CHASE & CO | $1.2M | 225,800 | 0.00% | 15q | -47.5%-$1.1M |
| IEQ CAPITAL, LLC | $1.2M | 240,798 | 0.01% | 6q | -18.5%-$279.0K |
| Headlands Technologies LLC | $1.2M | 240,796 | 0.13% | 4q | +8.2%+$93.1K |
| Pekin Hardy Strauss, Inc. | $1.2M | 226,400 | 0.10% | 31q | -11.5%-$149.9K |
| LPL Financial LLC | $1.1M | 210,612 | 0.00% | 20q | HELD |
| Thrivent Financial for Lutherans | $1.1M | 210,555 | 0.00% | 6q | +7.3%+$72.6K |
| Rafferty Asset Management, LLC | $1.1M | 206,163 | 0.00% | 14q | -49.5%-$1.0M |
| Stonepine Capital Management, LLC | $1.1M CALL | options only | 0.59% | 2q | OPTIONS |
| Virtus Investment Advisers, LLC | $1.0M | 204,373 | 0.24% | 6q | +50.3%+$348.9K |
| FRANKLIN RESOURCES INC | $1.0M | 201,445 | 0.00% | 18q | +8.7%+$82.6K |
| MONIMUS CAPITAL MANAGEMENT, LP | $997.6K | 195,611 | 0.23% | 6q | -55.9%-$1.3M |
| Legal & General Group Plc | $996.9K | 195,464 | 0.00% | 14q | -5.4%-$57.1K |
| Carrera Capital Advisors | $995.3K | 195,159 | 0.15% | 2q | +2.1%+$20.5K |
| Walleye Capital LLC | $872.2K | 171,014 | 0.00% | new | NEW |
| VANGUARD ASSET MANAGEMENT, Ltd | $849.3K | 166,521 | 0.00% | 2q | HELD |
| SEI INVESTMENTS CO | $775.5K | 152,059 | 0.00% | 10q | +13.1%+$90.0K |
| STATE OF WISCONSIN INVESTMENT BOARD | $731.5K | 143,425 | 0.00% | 14q | -10.2%-$83.2K |
| MetLife Investment Management, LLC | $727.5K | 142,652 | 0.00% | 4q | +7.3%+$49.2K |
| PFG Investments, LLC | $702.1K | 137,660 | 0.03% | 14q | HELD |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | $699.3K | 136,512 | 0.00% | 9q | -3.4%-$24.4K |
| Inspire Investing, LLC | $684.7K | 134,251 | 0.03% | 12q | +54.6%+$241.9K |
| LOS ANGELES CAPITAL MANAGEMENT LLC | $659.8K | 129,367 | 0.00% | 3q | +13855.4%+$655.0K |
| Lion Point Capital, LP | $656.1K | 128,650 | 3.14% | 16q | HELD |
| SECTORAL ASSET MANAGEMENT INC | $624.2K | 122,394 | 0.44% | 2q | HELD |
| Trust Co | $593.5K | 116,369 | 0.05% | new | NEW |
| DekaBank Deutsche Girozentrale | $591.0K | 100,000 | 0.00% | 14q | HELD |
| PRUDENTIAL FINANCIAL INC | $590.5K | 115,790 | 0.00% | 13q | +3.0%+$17.3K |
| Pavaki Capital Management LLC | $586.5K | 115,000 | 0.20% | 3q | HELD |
| Vanguard Global Advisers, LLC | $575.8K | 112,904 | 0.00% | 2q | HELD |
| PROFUND ADVISORS LLC | $537.2K | 105,338 | 0.01% | 14q | -42.1%-$391.3K |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE | $535.1K | 104,922 | 0.00% | 15q | -2.1%-$11.3K |
| Zurcher Kantonalbank (Zurich Cantonalbank) | $527.8K | 103,494 | 0.00% | 14q | HELD |
| SG Americas Securities, LLC | $526.0K | 103,174 | 0.00% | 12q | -3.4%-$18.5K |
| Russell Investments Group, Ltd. | $523.3K | 102,617 | 0.00% | 12q | +82.3%+$236.3K |
| HSBC HOLDINGS PLC | $509.3K | 100,550 | 0.00% | 7q | +7.0%+$33.5K |
Showing the largest 100 of 253 reported holders.
What the insiders did
Open market purchases and sales reported on Form 4 in the last 180 days. Grants, option exercises and shares surrendered to cover tax are left out: they are compensation rather than a decision to buy or sell. Where a broker filled one order in tranches the lines are summed, because it was one decision.
Officers and directors
| Date | Insider | Role | Side | Shares | Value |
|---|---|---|---|---|---|
| 2026-06-18 | Williams Laura A | Chief Patient Officer | Sold | 81,898 | $490.5K |
| 2026-05-21 | RAAB MICHAEL | President & CEO | Sold | 54,748 | $343.1K ×4 |
| 2026-05-15 | RAAB MICHAEL | President & CEO | Sold | 41,666 | $261.6K |
| 2026-06-15 | RAAB MICHAEL | President & CEO | Sold | 41,666 | $236.3K |
| 2026-08-21 | RAAB MICHAEL | President & CEO | Sold | 58,574 | $225.9K ×4 |
| 2026-07-15 | RAAB MICHAEL | President & CEO | Sold | 41,668 | $210.9K |
Quarter by quarter
Coverage begins with the quarter ending 2018-12-31. Earlier filings exist only as occasional late amendments, too sparse to describe a market, so they are not shown.
| Quarter | Holders | Value | Shares | New | Added | Trimmed | Options |
|---|---|---|---|---|---|---|---|
| Q3 2026 | 40 | $10.3M | 3,028,378 | 5 | 12 | 16 | 0.0% |
| Q2 2026 | 253 | $921.8M | 177,453,794 | 43 | 86 | 85 | 1.7% |
| Q1 2026 | 242 | $1.0B | 169,589,934 | 43 | 102 | 58 | 1.5% |
| Q4 2025 | 229 | $991.1M | 166,956,655 | 32 | 76 | 78 | 1.8% |
| Q3 2025 | 222 | $917.4M | 162,763,318 | 41 | 74 | 70 | 2.2% |
| Q2 2025 | 205 | $673.0M | 167,829,833 | 28 | 76 | 61 | 2.3% |
| Q1 2025 | 221 | $833.9M | 164,710,863 | 40 | 86 | 49 | 3.0% |
| Q4 2024 | 216 | $800.1M | 151,220,424 | 37 | 73 | 59 | 4.2% |
| Q3 2024 | 203 | $1.0B | 143,093,442 | 28 | 73 | 63 | 3.5% |
| Q2 2024 | 197 | $1.1B | 144,651,746 | 40 | 63 | 60 | 3.5% |
| Q1 2024 | 189 | $1.1B | 146,795,808 | 51 | 59 | 53 | 3.9% |
| Q4 2023 | 163 | $912.7M | 140,542,067 | 35 | 69 | 33 | 4.5% |
| Q3 2023 | 150 | $531.2M | 125,847,784 | 30 | 51 | 37 | 3.3% |
| Q2 2023 | 145 | $437.6M | 125,610,449 | 40 | 45 | 36 | 2.6% |
| Q1 2023 | 135 | $572.6M | 114,048,995 | 48 | 43 | 23 | 3.9% |
| Q4 2022 | 109 | $242.7M | 80,356,091 | 48 | 30 | 20 | 7.0% |
| Q3 2022 | 80 | $107.3M | 86,664,491 | 23 | 18 | 21 | 3.7% |
| Q2 2022 | 75 | $39.5M | 64,578,638 | 20 | 17 | 20 | 2.9% |
| Q1 2022 | 87 | $58.4M | 51,483,395 | 11 | 24 | 29 | 2.9% |
| Q4 2021 | 98 | $53.0M | 42,641,389 | 21 | 29 | 28 | 8.4% |
| Q3 2021 | 102 | $68.7M | 48,923,081 | 19 | 36 | 29 | 3.1% |
| Q2 2021 | 125 | $846.7M | 110,895,535 | 28 | 42 | 35 | 0.8% |
| Q1 2021 | 122 | $639.9M | 96,564,895 | 13 | 42 | 36 | 0.2% |
| Q4 2020 | 119 | $671.1M | 103,544,720 | 23 | 30 | 38 | 0.1% |
| Q3 2020 | 107 | $517.3M | 98,395,662 | 11 | 30 | 36 | 0.1% |
| Q2 2020 | 125 | $684.6M | 98,729,589 | 36 | 41 | 30 | 0.2% |
| Q1 2020 | 97 | $697.1M | 122,377,550 | 8 | 45 | 27 | 0.2% |
| Q4 2019 | 105 | $653.3M | 86,587,970 | 35 | 37 | 15 | 0.5% |
| Q3 2019 | 76 | $316.1M | 66,776,552 | 17 | 29 | 19 | 0.7% |
| Q2 2019 | 69 | $123.0M | 45,662,216 | 9 | 22 | 20 | 0.1% |
| Q1 2019 | 72 | $129.0M | 46,045,599 | 6 | 23 | 29 | 0.0% |
| Q4 2018 | 82 | $547.0M | 305,562,397 | 5 | 2 | 1 | 0.0% |
