Ardelyx ARDX Institutional Ownership

NASDAQ ARDX

$3.74 +0.03 (+0.81%)

As of: Sep 4, 2026 · 11:51 AM EDT

Institutions by Trading Activity

246 Institutions

Increased 131 53.3%

Unchanged 30 12.2%

Reduced 85 34.6%

Ownership Statistics

13F · as of 30 Jun, 2026

Institutional Ownership

72.37%

▲+0.00 pp QoQ

Shares Held by Institutions

179.53Mn

of 248.07Mn outstanding

▲+15.70% QoQ

Shares Outstanding

248.07Mn

68.54Mn held outside 13F filers

Institutional Investors

246

filed 13F for Jun 2026

▲+7 vs prior quarter

Net Shares Added (QoQ)

+24.36Mn

accumulated since last quarter

Value of Holdings

$666.05Mn

reported market value

Shares Owned by Institutions

Shares held % of outstanding

Latest —

Average ownership —

Peak ownership —

Shares Purchased/Sold by Institutions

Accumulated Distributed

Latest quarter —

Net over range —

Accumulating quarters —

Ownership Summary

Quarter ending 30 Jun, 2026

Ardelyx, Inc. (NASDAQ:ARDX) has 246 institutional investors with active 13F positions as of June 2026.

These investors collectively held 72.4% of Ardelyx's outstanding shares in June 2026, up from 72.4% in March 2026.
They increased total shares held in ARDX by 15.7% quarter over quarter, and investors in Ardelyx increased 20.59% from a year ago.
Among the 246 funds, 131 bought more Ardelyx shares, 85 sold down, and 30 held their ground.
Combined, these investors held 179.53Mn shares in ARDX for June 2026, up by 24.36Mn shares quarter on quarter, and up 14.68Mn shares year over year.
As of June 30, 2026, BlackRock, Inc. held the largest stake in Ardelyx with 23.5Mn shares, accounting for 9.48% of total shares outstanding.
The biggest buyers of Ardelyx for the quarter ending June 2026 included Rubric Capital Management LP (14.34Mn), Jupiter Topco LLC (5.3Mn), AIGH Capital Management LLC (3.2Mn), BlackRock, Inc. (2.34Mn), Sixth Street Partners Management Company, L.P. (2.21Mn).
Leading sellers of Ardelyx shares for the quarter ending June 2026 were MILLENNIUM MANAGEMENT LLC (3.94Mn), CITADEL ADVISORS LLC (2.43Mn), Freestone Grove Partners LP (1.63Mn), MARSHALL WACE, LLP (1.54Mn), J. Goldman & Co LP (1.42Mn).
According to Business Quant data, leading holders of ARDX for June 2026 are BlackRock, Inc. (23.5Mn), Rubric Capital Management LP (16.2Mn), MILLENNIUM MANAGEMENT LLC (13.9Mn), State Street Corp (13.36Mn), VANGUARD CAPITAL MANAGEMENT LLC (10.47Mn), NOMURA ASSET MANAGEMENT INTERNATIONAL INC. (9.55Mn), VANGUARD PORTFOLIO MANAGEMENT LLC (8.03Mn), GEODE CAPITAL MANAGEMENT, LLC (6.4Mn), Jupiter Topco LLC (5.3Mn), TWO SIGMA INVESTMENTS, LP (5.21Mn).

Form 13F Holdings

246 Institutional Holders

Report period 30 Jun, 2026

Total shares held 179.53Mn

Of outstanding 72.37%

#	Institution	CIK	Shares Held	% of Outstanding	Change (QoQ)	Change (%)	Value (USD)
1	BlackRock, Inc.	0002012383	23,504,630	9.48%	▲2,340,498	+11.06%	$119.87Mn
2	Rubric Capital Management LP	0001687509	16,202,700	6.53%	▲14,341,804	+770.69%	$82.63Mn
3	MILLENNIUM MANAGEMENT LLC	0001273087	13,900,773	5.60%	▼3,941,597	-22.09%	$70.89Mn
4	State Street Corp	0000093751	13,356,128	5.38%	▼248,179	-1.82%	$68.12Mn
5	VANGUARD CAPITAL MANAGEMENT LLC	0002100119	10,471,494	4.22%	▲105,982	+1.02%	$53.40Mn
6	NOMURA ASSET MANAGEMENT INTERNATIONAL INC.	0000921739	9,546,732	3.85%	▲1,377,363	+16.86%	$48.69Mn
7	VANGUARD PORTFOLIO MANAGEMENT LLC	0002100121	8,026,774	3.24%	▲1,365,081	+20.49%	$40.94Mn
8	GEODE CAPITAL MANAGEMENT, LLC	0001214717	6,401,736	2.58%	▲394,281	+6.56%	$32.66Mn
9	Jupiter Topco LLC	0002146052	5,302,311	2.14%	▲5,302,311	0.00%	$27.04Mn
10	TWO SIGMA INVESTMENTS, LP	0001179392	5,209,823	2.10%	▲935,780	+21.89%	$26.57Mn
11	Nuveen, LLC	0001871926	3,997,099	1.61%	▼1,237,584	-23.64%	$20.39Mn
12	Goldman Sachs Group Inc	0000886982	3,685,034	1.49%	▲468,824	+14.58%	$18.79Mn
13	AIGH Capital Management LLC	0001835943	3,200,000	1.29%	▲3,200,000	0.00%	$16.32Mn
14	Morgan Stanley	0000895421	2,389,546	0.96%	▲680,573	+39.82%	$12.19Mn
15	AQR CAPITAL MANAGEMENT LLC	0001167557	2,316,220	0.93%	▼123,230	-5.05%	$11.81Mn
16	Northern Trust Corp	0000073124	2,280,143	0.92%	▲209,096	+10.10%	$11.63Mn
17	Rock Springs Capital Management LP	0001595725	2,241,769	0.90%	▼57,704	-2.51%	$11.43Mn
18	Sixth Street Partners Management Company, L.P.	0001812095	2,211,760	0.89%	▲2,211,760	0.00%	$11.28Mn
18	CHARLES SCHWAB INVESTMENT MANAGEMENT INC	0000884546	2,211,760	0.89%	▲97,662	+4.62%	$11.28Mn
19	Bank Of America Corp /De/	0000070858	2,163,500	0.87%	▼173,494	-7.42%	$11.03Mn

Showing 1 to 20 of 246 holders