ARDELYX INC (ARDX)
Institutional ownership reported to the SEC as of Q2 2026, across 31 quarters.
238
Reporting holders
$925.1M
Reported value
71.4%
Of shares outstanding
1.8%
Held as options
+13
Holder change
Institutions report 177,896,441 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.
Options share is the part of reported value carried in derivative lines rather than shares. A high figure means institutions are expressing a view on this security without owning much of it.
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 | 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 |
| Sixth Street Partners Management Company, L.P. | $11.3M | 2,211,760 | 0.00% | new | NEW |
| 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 | 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 | 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 | 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 |
| 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 | 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 | 105,903 | 0.00% | 31q | -12.0%-$287.2K |
| Stonepine Capital Management, LLC | $2.1M | options only | 0.54% | 2q | OPTIONS |
| Universal- Beteiligungs- und Servicegesellschaft mbH | $2.1M | 411,386 | 0.00% | 6q | +15.2%+$276.5K |
| SIMPLEX TRADING, LLC | $1.9M | 151,427 | 0.00% | 29q | -13.4%-$299.4K |
| JANE STREET GROUP, LLC | $1.9M | options only | 0.00% | 25q | OPTIONS |
| 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 |
| 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 | -2.0%-$28.6K |
| 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 |
| Rafferty Asset Management, LLC | $1.1M | 206,163 | 0.00% | 14q | -49.5%-$1.0M |
| 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 |
| MERCER GLOBAL ADVISORS INC /ADV | $645.1K | 126,484 | 0.00% | 5q | +110.0%+$337.9K |
| SECTORAL ASSET MANAGEMENT INC | $624.2K | 122,394 | 0.44% | 2q | HELD |
| Trust Co | $593.5K | 116,369 | 0.05% | new | NEW |
| 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 |
| 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 |
| DIVERSIFIED TRUST CO | $496.0K | 97,247 | 0.01% | new | NEW |
| WELLINGTON MANAGEMENT GROUP LLP | $460.8K | 90,358 | 0.00% | 11q | -5.1%-$24.6K |
| WEALTH ENHANCEMENT ADVISORY SERVICES, LLC | $451.8K | 85,573 | 0.00% | 6q | -6.5%-$31.6K |
| KORNITZER CAPITAL MANAGEMENT INC /KS | $449.0K | 88,041 | 0.01% | new | NEW |
Five percent filings
Anyone crossing 5% of a company must say so within days - far sooner than the next quarterly holdings report. A 13D declares an intent to influence the company; a 13G is the passive version. See all activist filings →
| Filed | Form | Filer | % of class |
|---|---|---|---|
| 2026-08-14 | 13G | Rubric Capital Management LPwith 1 co-filers | 6.6% |
| 2026-08-11 | 13G/A | Millennium Management LLCwith 3 co-filers | 5.7% |
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 |
|---|---|---|---|---|---|---|---|
| Q2 2026 | 238 | $925.1M | 177,896,441 | 43 | 78 | 82 | 1.8% |
| Q1 2026 | 225 | $1.0B | 167,480,400 | 38 | 97 | 56 | 1.6% |
| Q4 2025 | 214 | $984.9M | 166,059,127 | 31 | 70 | 74 | 1.8% |
| Q3 2025 | 204 | $906.4M | 160,956,560 | 38 | 68 | 65 | 2.2% |
| Q2 2025 | 188 | $666.7M | 167,646,961 | 26 | 71 | 55 | 2.3% |
| Q1 2025 | 204 | $821.8M | 163,298,246 | 36 | 79 | 47 | 2.9% |
| Q4 2024 | 201 | $794.6M | 151,505,071 | 36 | 67 | 54 | 4.0% |
| Q3 2024 | 186 | $994.8M | 139,832,088 | 27 | 69 | 56 | 3.2% |
| Q2 2024 | 180 | $1.1B | 141,164,691 | 34 | 59 | 55 | 3.2% |
| Q1 2024 | 173 | $1.1B | 141,441,992 | 47 | 56 | 47 | 3.7% |
| Q4 2023 | 150 | $881.2M | 136,037,227 | 34 | 66 | 27 | 4.3% |
| Q3 2023 | 131 | $504.1M | 119,694,100 | 26 | 45 | 32 | 3.1% |
| Q2 2023 | 127 | $416.0M | 119,610,038 | 33 | 40 | 33 | 2.5% |
| Q1 2023 | 117 | $476.9M | 105,685,944 | 40 | 39 | 19 | 4.1% |
| Q4 2022 | 87 | $179.5M | 69,537,735 | 38 | 22 | 15 | 7.9% |
| Q3 2022 | 81 | $93.5M | 75,086,725 | 23 | 18 | 22 | 4.3% |
| Q2 2022 | 76 | $23.8M | 38,019,698 | 20 | 18 | 20 | 4.7% |
| Q1 2022 | 88 | $46.0M | 39,905,500 | 11 | 24 | 30 | 3.7% |
| Q4 2021 | 99 | $53.3M | 42,935,177 | 21 | 30 | 28 | 8.4% |
| Q3 2021 | 104 | $68.8M | 49,025,591 | 19 | 37 | 29 | 3.1% |
| Q2 2021 | 128 | $649.6M | 84,891,946 | 28 | 44 | 36 | 1.0% |
| Q1 2021 | 125 | $560.9M | 84,629,034 | 13 | 43 | 38 | 0.2% |
| Q4 2020 | 122 | $521.7M | 80,494,872 | 23 | 32 | 39 | 0.2% |
| Q3 2020 | 110 | $407.5M | 77,472,225 | 11 | 31 | 38 | 0.2% |
| Q2 2020 | 128 | $538.3M | 77,584,765 | 37 | 42 | 31 | 0.3% |
| Q1 2020 | 98 | $436.9M | 76,598,015 | 8 | 46 | 27 | 0.3% |
| Q4 2019 | 107 | $571.8M | 75,730,737 | 35 | 37 | 16 | 0.6% |
| Q3 2019 | 78 | $230.4M | 48,539,310 | 18 | 29 | 20 | 1.0% |
| Q2 2019 | 70 | $123.0M | 45,669,553 | 9 | 22 | 21 | 0.1% |
| Q1 2019 | 73 | $129.0M | 46,054,888 | 6 | 24 | 29 | 0.0% |
| Q4 2018 | 83 | $85.5M | 47,717,841 | 5 | 2 | 1 | 0.0% |