Ardelyx, Inc.: which funds bought and sold

Institutions that bought and sold Ardelyx shares in Q2 2026, from the holdings they reported to the SEC on Form 13F for March 31, 2026 and June 30, 2026.

Between March 31, 2026 and June 30, 2026, 126 institutions that filed 13F reports for both quarters added to or opened positions in Ardelyx, and 121 cut or closed them. Together they added a net 11.0M shares, +6.8% on what they held at the start of the quarter. Active managers and hedge funds on our list were net buyers of 1.5M shares (+3.0%); index fund managers were net buyers of 4.1M shares (+6.4%). 39 opened a new position and 34 sold out entirely.

Bought, Q2 2026 126 institutions, 39 of them new holders Sold, Q2 2026 121 institutions, 34 of them sold out

Net change, all compared +11.0M shares (+6.8%)

Net change, active managers +1.5M shares (+3.0%), 16 bought, 30 sold

Buyers versus sellers

institutions compared, 277

126 bought 30 121 sold

Active managers and hedge funds 16 bought · 30 sold · +1.5M

Index fund managers 8 bought · 4 sold · +4.1M

Other institutions 102 bought · 87 sold · +5.3M

Biggest buyers

by change in shares held

Biggest buyers
Institution	Change in shares	Shares June 30, 2026	Value
Rubric Capital Management LP Hedge fund	+14.3M +770.7%	16.2M	$82.6M
Aigh Capital Management LLC	+3.2M New position	3.2M	$16.3M
Blackrock, Inc. Index funds	+2.3M +11.1%	23.5M	$120M
Nomura Asset Management International Inc.	+1.4M +16.9%	9.5M	$48.7M
Vanguard Portfolio Management LLC Index funds	+1.4M +20.5%	8.0M	$40.9M
Invesco Ltd.	+1.1M +337.7%	1.4M	$7M
Two Sigma Investments, LP Hedge fund	+936K +21.9%	5.2M	$26.6M
Panagora Asset Management Inc Active manager	+891K New position	891K	$4.5M
Exoduspoint Capital Management, LP Hedge fund	+753K New position	753K	$3.8M
Schroder Investment Management Group Active manager	+741K +176.6%	1.2M	$6.1M
Morgan Stanley	+681K +39.8%	2.4M	$12.2M
Jump Financial, LLC	+537K New position	537K	$2.7M
Mackenzie Financial Corp	+474K New position	474K	$2.4M
Goldman Sachs Group Inc	+469K +14.6%	3.7M	$18.8M
Hussman Strategic Advisors, Inc.	+420K New position	420K	$2.1M
Geode Capital Management, LLC Index funds	+394K +6.6%	6.4M	$32.7M
Diadema Partners LP	+303K New position	303K	$1.5M
Citigroup Inc	+245K +370.3%	311K	$1.6M
Susquehanna International Group, LLP	+214K +30.5%	916K	$4.7M
Hennion & Walsh Asset Management, Inc.	+210K +21.0%	1.2M	$6.2M

Biggest buyers, active managers and hedge funds
Institution	Change in shares	Shares June 30, 2026	Value
Rubric Capital Management LP Hedge fund	+14.3M +770.7%	16.2M	$82.6M
Two Sigma Investments, LP Hedge fund	+936K +21.9%	5.2M	$26.6M
Panagora Asset Management Inc Active manager	+891K New position	891K	$4.5M
Exoduspoint Capital Management, LP Hedge fund	+753K New position	753K	$3.8M
Schroder Investment Management Group Active manager	+741K +176.6%	1.2M	$6.1M
Walleye Capital LLC Hedge fund	+171K New position	171K	$872,171
Los Angeles Capital Management LLC Active manager	+128K +13855.4%	129K	$659,772
Martingale Asset Management L P Active manager	+74K New position	74K	$377,431
Price T Rowe Associates Inc Active manager	+66K +22.4%	360K	$1.8M
Centerbook Partners LP Hedge fund	+47K New position	47K	$237,680

Biggest sellers

by change in shares held

Biggest sellers
Institution	Change in shares	Shares June 30, 2026	Value
Millennium Management LLC Hedge fund	−3.9M −22.1%	13.9M	$70.9M
Point72 Asset Management, L.P. Hedge fund	−3.0M Sold out	0	—
Citadel Advisors LLC Hedge fund	−2.4M −70.3%	1.0M	$5.3M
Freestone Grove Partners LP Hedge fund	−1.6M −86.5%	254K	$1.3M
Marshall Wace, LLP Hedge fund	−1.5M −96.5%	56K	$288,124
J. Goldman & Co LP Hedge fund	−1.4M −47.3%	1.6M	$8.1M
Nuveen, LLC	−1.2M −23.6%	4.0M	$20.4M
Jane Street Group, LLC	−1.2M Sold out	0	—
Eversept Partners, LP Hedge fund	−551K −24.7%	1.7M	$8.6M
Ishara Investments LP	−451K Sold out	0	—
Gsa Capital Partners LLP	−401K −84.8%	72K	$366,000
Renaissance Technologies LLC Hedge fund	−380K −29.9%	893K	$4.6M
Qube Research & Technologies Ltd Hedge fund	−345K −14.2%	2.1M	$10.7M
HRT Financial LP	−325K Sold out	0	—
D. E. Shaw & Co., Inc. Hedge fund	−301K −95.8%	13K	$66,713
State Street Corp Index funds	−248K −1.8%	13.4M	$68.1M
Monimus Capital Management, LP	−248K −55.9%	196K	$997,616
Jpmorgan Chase & Co	−204K −47.5%	226K	$1.2M
Rafferty Asset Management, LLC Index funds	−202K −49.5%	206K	$1.1M
First Trust Advisors LP	−197K −13.2%	1.3M	$6.6M

Biggest sellers, active managers and hedge funds
Institution	Change in shares	Shares June 30, 2026	Value
Millennium Management LLC Hedge fund	−3.9M −22.1%	13.9M	$70.9M
Point72 Asset Management, L.P. Hedge fund	−3.0M Sold out	0	—
Citadel Advisors LLC Hedge fund	−2.4M −70.3%	1.0M	$5.3M
Freestone Grove Partners LP Hedge fund	−1.6M −86.5%	254K	$1.3M
Marshall Wace, LLP Hedge fund	−1.5M −96.5%	56K	$288,124
J. Goldman & Co LP Hedge fund	−1.4M −47.3%	1.6M	$8.1M
Eversept Partners, LP Hedge fund	−551K −24.7%	1.7M	$8.6M
Renaissance Technologies LLC Hedge fund	−380K −29.9%	893K	$4.6M
Qube Research & Technologies Ltd Hedge fund	−345K −14.2%	2.1M	$10.7M
D. E. Shaw & Co., Inc. Hedge fund	−301K −95.8%	13K	$66,713

New positions

largest by value

Institution	Shares	Value June 30, 2026
Aigh Capital Management LLC	3.2M	$16.3M
Panagora Asset Management IncActive manager	891K	$4.5M
Exoduspoint Capital Management, LPHedge fund	753K	$3.8M
Jump Financial, LLC	537K	$2.7M
Mackenzie Financial Corp	474K	$2.4M
Hussman Strategic Advisors, Inc.	420K	$2.1M
Diadema Partners LP	303K	$1.5M
Walleye Capital LLCHedge fund	171K	$872,171
Trust Co	116K	$593,482
Diversified Trust Co	97K	$495,959

Sold out

largest by value

Institution	Shares	Value March 31, 2026
Point72 Asset Management, L.P.Hedge fund	3.0M	$17.9M
Jane Street Group, LLC	1.2M	$7.1M
Ishara Investments LP	451K	$2.7M
HRT Financial LP	325K	$1.9M
Capital Fund Management S.A.Hedge fund	165K	$991,333
Tudor Investment Corp Et AlHedge fund	101K	$607,254
Man Group PLCHedge fund	80K	$476,816
Brevan Howard Capital Management LPHedge fund	74K	$443,859
Vise Technologies, Inc.	58K	$336,030
Virtu Financial LLC	56K	$336,000

Who holds the shares

13F holdings at June 30, 2026

Institutions reporting: 247
Ten largest holders: 63.1%
Index fund managers: 38.6%
Active managers and hedge funds: 30.1%

Buying and selling by type of institution, March 31, 2026 to June 30, 2026
Type	Bought	Sold	New	Sold out	Net change in shares	Net %
Active managers and hedge funds	16	30	8	9	+1.5M	+3.0%
Index fund managers	8	4	0	1	+4.1M	+6.4%
Other institutions	102	87	31	24	+5.3M	+11.9%

Active managers and hedge funds: a list we maintain of about 400 well-known stock-picking firms and hedge funds, matched by SEC registration number (CIK) and checked against the filer names each quarter. Index fund managers: the large index houses, such as BlackRock, Vanguard, State Street, Geode and Northern Trust. Every other filer (banks, brokers, wealth managers, pension funds, insurers and firms not on the list) counts as another institution. A firm that files under several SEC registrations appears once for each.

What these filings can and cannot tell you

Form 13F lists the long positions in US-listed shares held by investment managers with more than $100 million in such holdings. Managers file it up to 45 days after each quarter ends, so this page shows what funds held at the end of each quarter, not what they are doing now: a position may have changed since. Short positions, most derivatives and smaller managers are not included, and a cut can mean a fund lost clients or rebalanced rather than a view on Ardelyx.

Only managers that filed a holdings report for both quarters are compared (277 here). 7 other holders are left out: first-time or late filers, firms that changed their SEC registration, and filings that withheld positions under confidential treatment, any of which would otherwise look like a new position or a sale. Figures are as reported by each manager in the SEC's quarterly 13F data sets; option positions are excluded.

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