Ardelyx, Inc. (ARDX) Institutional Ownership

Institutions by Trading Activity

Ownership Statistics

241,908,407Shares Outstanding

169,584,069Shares held by institutions

$1,075,162,997Value 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) is held by 223 institutional investors per 13F filings through December 2025.

Their combined ownership stood at 68.8% of outstanding shares in December 2025, down from 68.9% in September 2025.
They increased total shares held in Ardelyx by 9.17% from the prior quarter, while the number of investors in ARDX increased 5.19% year over year.
Of these 223 funds, 113 grew their exposure to Ardelyx, 82 cut back, and 28 maintained positions.
Combined, these investors held 166.42Mn shares in ARDX for December 2025, up by 13.97Mn shares quarter on quarter, and up 9.01Mn shares year over year.
Raiffeisen Bank International AG is the top holder of Ardelyx as of December 31, 2025, with 300.0K shares representing 0.12% of outstanding stock.
Top purchasers of ARDX stock for the quarter ending December 2025 included WEALTH ENHANCEMENT ADVISORY SERVICES, LLC (91.56K), PSP Research LLC (80.0K), E Fund Management Co., Ltd. (51.27K), Raiffeisen Bank International AG (30.0K), STRS OHIO (27.8K).
The largest sellers of Ardelyx for the quarter ending December 2025 were SG Americas Securities, LLC (64.78K), Pallas Capital Advisors LLC (2.14K), WEBSTER BANK, N. A. (500), Farther Finance Advisors, LLC (123), Sterling Capital Management LLC (15).
Per Business Quant, the top 10 investors in ARDX for the quarter ending December 2025 include Raiffeisen Bank International AG (300.0K), SG Americas Securities, LLC (106.8K), WEALTH ENHANCEMENT ADVISORY SERVICES, LLC (91.56K), Inspire Investing, LLC (86.82K), PSP Research LLC (80.0K), Vise Technologies, Inc. (57.64K), Root Financial Partners, LLC (57.54K), STRS OHIO (55.3K), E Fund Management Co., Ltd. (51.27K), Pictet Asset Management Holding SA (40.61K).

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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