ARDX · Ardelyx, Inc.
Market Cap
$933.21M
Shares
249.19M
Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.
Holders: 252
Total Value: $916,642,539
Total Shares: 179,833,848
Showing 1–100
of 262 holdings by value
· page 1 of 3
Institutional Ownership Trend
26 quarters
Holder Concentration
Across 252 13F filers · Δ vs Mar 31, 2026Top Holder
13.1%
+0.8 pts
Top 5
43.3%
+1.6 pts
Top 10
62.5%
+3.1 pts
HHI
516
Broadly held+26
Quarterly Activity
vs Mar 31, 2026
New
44
Increased
88
Decreased
88
Sold Out
35
Unchanged
32
Holder count:
+9
Institutional value:
-10.9%
Shares held:
+4.7%
Top Buyers
vs Mar 31, 2026| Institution | Added | Now Holds | Open |
|---|---|---|---|
| Large Rubric Capital Management LP | +14,341,804 | 16,202,700 | |
| Mega BlackRock, Inc. | +2,340,498 | 23,504,630 | |
| Large NOMURA ASSET MANAGEMENT INTERNATIONAL INC. | +1,377,363 | 9,546,732 | |
| Mega VANGUARD PORTFOLIO MANAGEMENT LLC | +1,365,081 | 8,026,774 | |
| Mega Invesco Ltd. | +1,056,156 | 1,368,868 |
Top Sellers
vs Mar 31, 2026| Institution | Sold | Now Holds | Open |
|---|---|---|---|
| Mega MILLENNIUM MANAGEMENT LLC | −3,771,497 | 14,272,473 | |
| Mega CITADEL ADVISORS LLC | −2,343,800 | 1,419,974 | |
| Large Freestone Grove Partners LP | −1,626,091 | 253,692 | |
| Large MARSHALL WACE, LLP | −1,544,362 | 56,495 | |
| Mid J. Goldman & Co LP | −1,420,685 | 1,579,828 |
Top New Positions
vs Mar 31, 2026| Institution | Acquired | Value (USD) | Open |
|---|---|---|---|
| Mega Jupiter Topco LLC | 5,302,311 | $27,041,785 | |
| Mid AIGH Capital Management LLC | 3,200,000 | $16,319,999 | |
| Large PANAGORA ASSET MANAGEMENT INC | 890,944 | $4,543,814 | |
| Large ExodusPoint Capital Management, LP | 752,923 | $3,839,907 | |
| Mid Jump Financial, LLC | 536,981 | $2,738,601 |
Top Sold-Out Positions
vs Mar 31, 2026| Institution | Previously Held | Last Value (USD) | Open |
|---|---|---|---|
| Mega JANUS HENDERSON GROUP PLC | 8,371,234 | $50,143,690 | |
| Large Point72 Asset Management, L.P. | 2,984,261 | $17,875,723 | |
| Small Ishara Investments LP | 451,000 | $2,701,490 | |
| Large HRT FINANCIAL LP | 325,124 | $1,947,492 | |
| Large CAPITAL FUND MANAGEMENT S.A. | 165,498 | $991,333 |
| Holder | Value (USD) | % of 13F | Shares | Type | Filed | Open |
|---|---|---|---|---|---|---|
| Mega BlackRock, Inc. | $119,873,606 | 13.08% | 23,504,630 | Shares | 2026-08-07 | |
| Large Rubric Capital Management LP | $82,633,770 | 9.01% | 16,202,700 | Shares | 2026-08-14 | |
| Mega MILLENNIUM MANAGEMENT LLC | $70,893,942 | 7.73% | 13,900,773 | Shares | 2026-08-14 | |
| Mega STATE STREET CORP | $68,116,252 | 7.43% | 13,356,128 | Shares | 2026-08-07 | |
| Mega VANGUARD CAPITAL MANAGEMENT LLC | $53,404,619 | 5.83% | 10,471,494 | Shares | 2026-08-13 | |
| Large NOMURA ASSET MANAGEMENT INTERNATIONAL INC. | $48,688,333 | 5.31% | 9,546,732 | Shares | 2026-08-14 | |
| Mega VANGUARD PORTFOLIO MANAGEMENT LLC | $40,936,547 | 4.47% | 8,026,774 | Shares | 2026-08-13 | |
| Mega GEODE CAPITAL MANAGEMENT, LLC | $32,648,853 | 3.56% | 6,401,736 | Shares | 2026-08-12 | |
| Mega Jupiter Topco LLC | $27,041,785 | 2.95% | 5,302,311 | Shares | 2026-08-14 | |
| Mega TWO SIGMA INVESTMENTS, LP | $26,570,097 | 2.90% | 5,209,823 | Shares | 2026-08-14 | |
| Mega Nuveen, LLC | $20,385,204 | 2.22% | 3,997,099 | Shares | 2026-08-11 | |
| Mega GOLDMAN SACHS GROUP INC | $18,793,673 | 2.05% | 3,685,034 | Shares | 2026-08-14 | |
| Mid AIGH Capital Management LLC | $16,319,999 | 1.78% | 3,200,000 | Shares | 2026-08-07 | |
| Mega MORGAN STANLEY | $12,186,682 | 1.33% | 2,389,546 | Shares | 2026-08-13 | |
| Mega AQR CAPITAL MANAGEMENT LLC | $11,812,719 | 1.29% | 2,316,220 | Shares | 2026-08-14 | |
| Mega NORTHERN TRUST CORP Bank | $11,628,727 | 1.27% | 2,280,143 | Shares | 2026-08-13 | |
| Mid Rock Springs Capital Management LP | $11,433,021 | 1.25% | 2,241,769 | Shares | 2026-08-14 | |
| Mega CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $11,279,976 | 1.23% | 2,211,760 | Shares | 2026-08-14 | |
| Mega BANK OF AMERICA CORP /DE/ Bank | $11,033,848 | 1.20% | 2,163,500 | Shares | 2026-08-14 | |
| Mega Qube Research & Technologies Ltd | $10,662,442 | 1.16% | 2,090,675 | Shares | 2026-08-14 | |
| Large JONES FINANCIAL COMPANIES LLLP | $9,006,253 | 0.98% | 1,765,932 | Shares | 2026-08-14 | |
| Mega VANGUARD FIDUCIARY TRUST CO Bank | $8,949,576 | 0.98% | 1,754,819 | Shares | 2026-08-13 | |
| Mid Eversept Partners, LP | $8,559,559 | 0.93% | 1,678,345 | Shares | 2026-08-14 | |
| Mid J. Goldman & Co LP | $8,057,122 | 0.88% | 1,579,828 | Shares | 2026-08-14 | |
| Mega Invesco Ltd. | $6,981,226 | 0.76% | 1,368,868 | Shares | 2026-08-14 | |
| Mega FIRST TRUST ADVISORS LP | $6,638,282 | 0.72% | 1,301,624 | Shares | 2026-08-11 | |
| Mid Hennion & Walsh Asset Management, Inc. | $6,179,619 | 0.67% | 1,211,690 | Shares | 2026-07-08 | |
| Mega SCHRODER INVESTMENT MANAGEMENT GROUP | $5,922,313 | 0.65% | 1,161,238 | Shares | 2026-08-13 | |
| Mega CITADEL ADVISORS LLC | $5,253,887 | 0.57% | 1,030,174 | Shares | 2026-09-02 | |
| Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP | $4,671,788 | 0.51% | 916,037 | Shares | 2026-08-14 | |
| Large RENAISSANCE TECHNOLOGIES LLC | $4,552,224 | 0.50% | 892,593 | Shares | 2026-08-13 | |
| Large PANAGORA ASSET MANAGEMENT INC | $4,543,814 | 0.50% | 890,944 | Shares | 2026-08-06 | |
| Mega BNP PARIBAS ARBITRAGE, SA | $4,132,642 | 0.45% | 810,322 | Shares | 2026-08-13 | |
| Mega DEUTSCHE BANK AG\ Bank | $3,931,639 | 0.43% | 770,910 | Shares | 2026-08-07 | |
| Large ExodusPoint Capital Management, LP | $3,839,907 | 0.42% | 752,923 | Shares | 2026-08-14 | |
| Mega Bank of New York Mellon Corp Bank | $3,823,346 | 0.42% | 749,676 | Shares | 2026-08-06 | |
| Large Squarepoint Ops LLC | $3,647,836 | 0.40% | 715,262 | Shares | 2026-08-14 | |
| Small SECTOR GAMMA AS | $3,502,904 | 0.38% | 686,844 | Shares | 2026-08-12 | |
| Large Trexquant Investment LP | $3,368,988 | 0.37% | 660,586 | Shares | 2026-08-14 | |
| Mid Redmile Group, LLC | $3,272,925 | 0.36% | 641,750 | Shares | 2026-08-14 | |
| Mega RAYMOND JAMES FINANCIAL INC | $2,869,626 | 0.31% | 562,672 | Shares | 2026-08-14 | |
| Mega UBS Group AG | $2,813,776 | 0.31% | 551,721 | Shares | 2026-08-13 | |
| Mid Jump Financial, LLC | $2,738,601 | 0.30% | 536,981 | Shares | 2026-08-13 | |
| Small Krensavage Asset Management, LLC | $2,726,067 | 0.30% | 534,523 | Shares | 2026-08-14 | |
| Mega UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | $2,480,698 | 0.27% | 486,412 | Shares | 2026-08-13 | |
| Large MACKENZIE FINANCIAL CORP | $2,417,879 | 0.26% | 474,094 | Shares | 2026-08-13 | |
| Mega Swiss National Bank Bank | $2,384,760 | 0.26% | 467,600 | Shares | 2026-08-11 | |
| Small HUSSMAN STRATEGIC ADVISORS, INC. | $2,142,000 | 0.23% | 420,000 | Shares | 2026-08-03 | |
| Large Universal- Beteiligungs- und Servicegesellschaft mbH | $2,098,068 | 0.23% | 411,386 | Shares | 2026-08-06 | |
| Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP | $2,033,880 | 0.22% | 398,800 | Put | 2026-08-14 | |
| Mega PRICE T ROWE ASSOCIATES INC /MD/ | $1,834,138 | 0.20% | 359,635 | Shares | 2026-08-14 | |
| Small Clay Northam Wealth Management, LLC | $1,703,986 | 0.19% | 334,115 | Shares | 2026-08-11 | |
| Mega CITIGROUP INC | $1,586,206 | 0.17% | 311,021 | Shares | 2026-08-03 | |
| Mega RHUMBLINE ADVISERS | $1,559,580 | 0.17% | 305,800 | Shares | 2026-08-12 | |
| Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP | $1,558,560 | 0.17% | 305,600 | Call | 2026-08-14 | |
| Small DIADEMA PARTNERS LP | $1,545,427 | 0.17% | 303,025 | Shares | 2026-08-14 | |
| Mega CITADEL ADVISORS LLC | $1,545,300 | 0.17% | 303,000 | Put | 2026-09-02 | |
| Mega MILLENNIUM MANAGEMENT LLC | $1,530,000 | 0.17% | 300,000 | Call | 2026-08-14 | |
| Mid Raiffeisen Bank International AG Bank | $1,530,000 | 0.17% | 300,000 | Shares | 2026-08-03 | |
| Mega CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM Pension | $1,507,738 | 0.16% | 295,635 | Shares | 2026-08-24 | |
| Mid Y-Intercept (Hong Kong) Ltd | $1,480,295 | 0.16% | 290,254 | Shares | 2026-07-14 | |
| Mega WELLS FARGO & COMPANY/MN | $1,430,395 | 0.16% | 280,470 | Shares | 2026-08-14 | |
| Mega ALLIANCEBERNSTEIN L.P. | $1,350,327 | 0.15% | 264,770 | Shares | 2026-08-14 | |
| Small Knott David M Jr | $1,342,156 | 0.15% | 263,168 | Shares | 2026-08-12 | |
| Large Freestone Grove Partners LP | $1,293,829 | 0.14% | 253,692 | Shares | 2026-08-14 | |
| Large IEQ CAPITAL, LLC | $1,228,069 | 0.13% | 240,798 | Shares | 2026-08-11 | |
| Small Headlands Technologies LLC | $1,228,059 | 0.13% | 240,796 | Shares | 2026-08-13 | |
| Small Pekin Hardy Strauss, Inc. | $1,154,640 | 0.13% | 226,400 | Shares | 2026-07-30 | |
| Mega JPMORGAN CHASE & CO | $1,151,576 | 0.13% | 225,800 | Shares | 2026-08-12 | |
| Mega LPL Financial LLC | $1,074,121 | 0.12% | 210,612 | Shares | 2026-08-07 | |
| Large Thrivent Financial for Lutherans | $1,073,830 | 0.12% | 210,555 | Shares | 2026-08-14 | |
| Large Rafferty Asset Management, LLC | $1,051,431 | 0.11% | 206,163 | Shares | 2026-08-14 | |
| Mega JANE STREET GROUP, LLC | $1,049,070 | 0.11% | 205,700 | Put | 2026-08-14 | |
| Small Virtus Investment Advisers, LLC | $1,042,302 | 0.11% | 204,373 | Shares | 2026-08-11 | |
| Mega FRANKLIN RESOURCES INC | $1,027,369 | 0.11% | 201,445 | Shares | 2026-08-13 | |
| Large Caption Management, LLC | $1,020,000 | 0.11% | 200,000 | Put | 2026-08-14 | |
| Small MONIMUS CAPITAL MANAGEMENT, LP | $997,616 | 0.11% | 195,611 | Shares | 2026-08-14 | |
| Mega Legal & General Group Plc | $996,865 | 0.11% | 195,464 | Shares | 2026-08-14 | |
| Small Carrera Capital Advisors | $995,310 | 0.11% | 195,159 | Shares | 2026-08-03 | |
| Mega JANE STREET GROUP, LLC | $875,160 | 0.10% | 171,600 | Call | 2026-08-14 | |
| Large Walleye Capital LLC | $872,171 | 0.10% | 171,014 | Shares | 2026-08-03 | |
| Mega VANGUARD ASSET MANAGEMENT, Ltd | $849,257 | 0.09% | 166,521 | Shares | 2026-08-13 | |
| Large SEI INVESTMENTS CO | $775,500 | 0.08% | 152,059 | Shares | 2026-08-14 | |
| Mid SIMPLEX TRADING, LLC | $772,277 | 0.08% | 151,427 | Shares | 2026-08-12 | |
| Large Caption Management, LLC | $765,000 | 0.08% | 150,000 | Call | 2026-08-14 | |
| Small Stonepine Capital Management, LLC | $765,000 | 0.08% | 150,000 | Call | 2026-08-17 | |
| Large STATE OF WISCONSIN INVESTMENT BOARD | $731,467 | 0.08% | 143,425 | Shares | 2026-08-14 | |
| Large MetLife Investment Management, LLC | $727,525 | 0.08% | 142,652 | Shares | 2026-08-14 | |
| Mid PFG Investments, LLC | $702,066 | 0.08% | 137,660 | Shares | 2026-07-23 | |
| Large MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. Mutual Fund | $696,210 | 0.08% | 136,512 | Shares | 2026-08-14 | |
| Mid Inspire Investing, LLC | $684,680 | 0.07% | 134,251 | Shares | 2026-08-12 | |
| Large Caption Management, LLC | $663,000 | 0.07% | 130,000 | Shares | 2026-08-14 | |
| Large LOS ANGELES CAPITAL MANAGEMENT LLC | $659,771 | 0.07% | 129,367 | Shares | 2026-08-13 | |
| Micro Lion Point Capital, LP | $656,115 | 0.07% | 128,650 | Shares | 2026-08-14 | |
| Small SECTORAL ASSET MANAGEMENT INC | $624,209 | 0.07% | 122,394 | Shares | 2026-08-14 | |
| Micro Trust Co Bank | $593,481 | 0.06% | 116,369 | Shares | 2026-07-10 | |
| Large PRUDENTIAL FINANCIAL INC | $590,529 | 0.06% | 115,790 | Shares | 2026-08-12 | |
| Small Pavaki Capital Management LLC | $586,500 | 0.06% | 115,000 | Shares | 2026-08-07 | |
| Mega Vanguard Global Advisers, LLC | $575,810 | 0.06% | 112,904 | Shares | 2026-08-13 | |
| Mid GROUP ONE TRADING LLC | $540,105 | 0.06% | 105,903 | Shares | 2026-08-14 |
Key facts
CIK
1437402
CUSIP
039697107
13F (30d)
183 filings
180 filers
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