Ardelyx, Inc. (ARDX) Institutional Ownership

Institutions by Trading Activity

Ownership Statistics

241,908,407Shares Outstanding

169,584,069Shares held by institutions

$1,063,292,113Value of institutional holdings

70.10%Institutional ownership %

10.32%Shares Changed QoQ

223No. of institutional investors

Shares Owned by Institutions

Shares Purchased/Sold by Institutions

Ownership Summary

Ardelyx, Inc. (NASDAQ:ARDX) showed up in the 13F filings of 223 institutional investors as of December 2025.

They owned 68.8% of outstanding stock in December 2025, down from 68.9% the prior quarter.
They increased total shares held in Ardelyx by 9.17% from last quarter, and the number of investors in ARDX increased 5.19% annually.
Of these 223 funds, 113 grew their exposure to Ardelyx, 82 cut back, and 28 maintained positions.
The aggregate institutional position in Ardelyx amounted to 166.42Mn shares as of December 2025, up by 13.97Mn shares quarter on quarter, and up 9.01Mn shares year over year.
BlackRock, Inc. leads ownership in ARDX with 21.14Mn shares as of December 31, 2025, equal to 8.74% of outstanding shares.
Top purchasers of ARDX stock for the quarter ending December 2025 included NOMURA ASSET MANAGEMENT INTERNATIONAL INC. (9.33Mn), MILLENNIUM MANAGEMENT LLC (4.27Mn), Goldman Sachs Group Inc (3.54Mn), State Street Corp (2.19Mn), J. Goldman & Co LP (1.53Mn).
Top sellers of ARDX stock for the quarter ending December 2025 included MARSHALL WACE, LLP (3.75Mn), Bank Of America Corp /De/ (3.1Mn), D. E. Shaw & Co., Inc. (1.9Mn), Jpmorgan Chase & Co (1.27Mn), Barclays Plc (1.24Mn).
Business Quant data shows the 10 biggest positions in Ardelyx as of December 2025 are held by BlackRock, Inc. (21.14Mn), VANGUARD GROUP INC (18.98Mn), Janus Henderson Group Plc (14.51Mn), State Street Corp (11.91Mn), MILLENNIUM MANAGEMENT LLC (11.91Mn), NOMURA ASSET MANAGEMENT INTERNATIONAL INC. (9.33Mn), Goldman Sachs Group Inc (6.13Mn), GEODE CAPITAL MANAGEMENT, LLC (5.83Mn), MARSHALL WACE, LLP (5.19Mn), Nuveen, LLC (5.16Mn).

223 Institutional Holders

169,584,069 Total Shares Held

Rows:

Download Data

Owner Name	Date	Shares Held	Change (QoQ)	Change (%)	Value (USD)
BlackRock, Inc.	31 Dec, 2025	21,139,105	315,525	1.52%	$123,240,982.00
VANGUARD GROUP INC	31 Dec, 2025	18,979,483	610,162	3.32%	$110,650,386.00
Janus Henderson Group Plc	31 Dec, 2025	14,514,692	690,599	5.00%	$84,583,285.00
State Street Corp	31 Dec, 2025	11,912,339	2,193,649	22.57%	$69,448,936.00
MILLENNIUM MANAGEMENT LLC	31 Dec, 2025	11,909,511	4,267,524	55.84%	$69,432,449.00
NOMURA ASSET MANAGEMENT INTERNATIONAL INC.	31 Dec, 2025	9,328,744	9,328,744	0.00%	$54,387,000.00
Goldman Sachs Group Inc	31 Dec, 2025	6,129,492	3,544,615	137.13%	$35,734,938.00
GEODE CAPITAL MANAGEMENT, LLC	31 Dec, 2025	5,827,618	70,832	1.23%	$33,980,836.00
MARSHALL WACE, LLP	31 Dec, 2025	5,188,639	-3,754,403	-41.98%	$30,249,766.00
Nuveen, LLC	31 Dec, 2025	5,164,549	-10,404	-0.20%	$30,109,321.00
TWO SIGMA INVESTMENTS, LP	31 Dec, 2025	2,873,969	383,121	15.38%	$16,755,239.00
Morgan Stanley	31 Dec, 2025	2,358,806	-526,534	-18.25%	$13,751,843.00
Rock Springs Capital Management LP	31 Dec, 2025	2,299,473	13,200	0.58%	$13,405,928.00
Bank Of America Corp /De/	31 Dec, 2025	2,208,693	-3,099,701	-58.39%	$12,876,677.00
CHARLES SCHWAB INVESTMENT MANAGEMENT INC	31 Dec, 2025	2,117,293	-77,461	-3.53%	$12,343,818.00
JANE STREET GROUP, LLC	31 Dec, 2025	2,060,667	-133,058	-6.07%	$12,013,689.00
AQR CAPITAL MANAGEMENT LLC	31 Dec, 2025	2,025,083	-119,041	-5.55%	$11,806,235.00
Northern Trust Corp	31 Dec, 2025	2,019,285	-98,707	-4.66%	$11,772,430.00
ORACLE INVESTMENT MANAGEMENT INC	31 Dec, 2025	1,872,624	368,798	24.52%	$10,917,398.00
JONES FINANCIAL COMPANIES LLLP	31 Dec, 2025	1,854,755	-19,148	-1.02%	$10,813,222.00

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