Ardelyx Ownership | Who Owns Ardelyx?

Overview Forecast RevenueFinancials Chart Transcripts

Ardelyx Ownership Summary

Ardelyx is owned by 72.95% institutional investors, 3.23% insiders, and 23.82% retail investors. Blackrock funding, inc. /de is the largest institutional shareholder, holding 9.56% of ARDX shares. Macquarie Small Cap Core I is the top mutual fund, with 3.57% of its assets in Ardelyx shares.

ARDX Ownership Benchmark

Type	Name	% Inst	% Insiders	% Retail
Stock	Ardelyx	72.95%	3.23%	23.82%
Sector	Healthcare Stocks	50.59%	12.40%	37.01%
Industry	Biotech Stocks	49.10%	12.14%	38.76%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

Holder	Shares	% Holding	Value
Blackrock funding, inc. /de	23.50M	9.56%	$119.87M
Vanguard group	18.98M	7.85%	$110.65M
Blackrock	17.55M	7.53%	$130.06M
Rubric capital management lp	16.20M	6.59%	$82.63M
Millennium management	13.90M	5.65%	$70.89M
State street	13.36M	5.43%	$68.12M
Vanguard capital management	10.47M	4.26%	$53.40M
Macquarie management	9.55M	3.88%	$48.69M
Janus henderson group	8.37M	3.47%	$50.14M
Geode capital management	6.40M	2.60%	$32.66M

Top Institutional Shareholders by % of Total Assets

Holder	Shares	% Assets	Value
Oracle investment management	1.43M	3.85%	$5.61M
Lion point capital, lp	128.65K	3.14%	$656.12K
Krensavage asset management	534.52K	1.04%	$2.73M
Aigh capital management	3.20M	1.03%	$16.32M
Clay northam wealth management	334.12K	0.84%	$1.70M
Sector gamma as	686.84K	0.76%	$3.50M
Rubric capital management lp	16.20M	0.76%	$82.63M
Knott david m jr	263.17K	0.71%	$1.34M
Rock springs capital management lp	2.24M	0.56%	$11.43M
Hussman strategic advisors	420.00K	0.49%	$2.14M

Top Buyers

Holder	Shares	% Assets	Change
Rubric capital management lp	16.20M	0.76%	14.34M
Aigh capital management	3.20M	1.03%	3.20M
Blackrock funding, inc. /de	23.50M	0.00%	2.34M
Sixth street partners management company	2.21M	0.00%	2.21M
Macquarie management	9.55M	0.07%	1.38M

Top Sellers

Holder	Shares	% Assets	Change
Macquarie group	-	-	-10.46M
Janus henderson group	8.37M	0.02%	-6.14M
Eventide asset management	-	-	-5.60M
Millennium management	13.90M	0.03%	-3.94M
Point72 asset management	-	-	-2.98M

New Positions

Holder	Shares	% Assets	Change	Value
Sixth street partners management company	2.21M	0.00%	2.21M	$11.28M
Hussman strategic advisors	420.00K	0.49%	420.00K	$2.14M
Trust	116.37K	0.05%	116.37K	$593.48K
Capstone investment advisors	115.81K	0.00%	115.81K	$638.13K
Diversified trust	97.25K	0.01%	97.25K	$495.96K

Sold Out

Holder	Change
Skopos labs	-1.00
Zrc wealth management	-15.00
Versant capital management	-34.00
Glenmede investment management, lp	-39.00
Nelson, van denburg & campbell wealth management group	-44.00

Institutional Ownership Trends

Date	Holdings	Change %	Shares	Change %	Ownership	Change %	Increased Position	Change %	Decreased Position	Change %
Jun 30, 2026	260	3.17%	179,356,481	5.78%	72	1.47%	130	-17.20%	87	50.00%
Mar 31, 2026	242	2.54%	166,709,305	-0.02%	69	1.46%	147	28.95%	59	-28.92%
Dec 31, 2025	62	-73.50%	24,210,709	-85.13%	10	0.22%	30	-74.79%	18	-74.65%
Sep 30, 2025	77	-63.51%	29,911,807	-82.16%	12	0.26%	43	-61.26%	21	-65.00%
Jun 30, 2025	207	-9.21%	167,433,845	2.00%	69	1.47%	109	-14.17%	59	1.72%

Top Mutual Funds Shareholders

Holder	Shares	% Holding	Change
Macquarie Small Cap Core I	8.61M	3.57%	-646.97K
Nomura US Small Cap Core Equity	7.63M	3.09%	1.16M
Delaware Small Cap Core I	7.32M	3.09%	1.68M
Nomura Small Cap Core I	7.63M	3.06%	1.37M
Vanguard MStar Total Stk Mkt Idx Invest	7.40M	3.03%	-
Vanguard Morn Total Stk Mkt Idx Investor	7.40M	3.00%	-
Vanguard Total Stock Mkt Idx Inv	7.40M	3.00%	-
Vanguard US Total Market Shares ETF	7.03M	2.95%	-
State Street® SPDR® S&P® Biotech ETF	7.30M	2.93%	16.77K
iShares Russell 2000 ETF	6.22M	2.50%	-110.59K

Recent Insider Transactions

Date	Name	Role	Activity	Value
Aug 21, 2026	Hohenleitner Susan	Chief Financial Officer	Sell	$6.01K
Aug 21, 2026	Reilly Joseph James	See Remarks	Sell	$4.28K
Aug 21, 2026	Reilly Joseph James	See Remarks	Sell	$11.08K
Aug 21, 2026	Bishop John E	See Remarks	Sell	$66.65K
Aug 21, 2026	Bishop John E	See Remarks	Sell	$9.52K

Insider Transactions Trends

Date	Buy	Sell
2026 Q3	-	1
2026 Q2	-	23
2026 Q1	1	27
2025 Q4	-	6
2025 Q3	-	8

ARDX Ownership FAQ

Who Owns Ardelyx?

Ardelyx shareholders are primarily institutional investors at 72.95%, followed by 3.23% insiders and 23.82% retail investors. The average institutional ownership in Ardelyx's industry, Biotech Stocks , is 49.10%, which Ardelyx exceeds.

Who owns the most shares of Ardelyx?

Ardelyx’s largest shareholders are Blackrock funding, inc. /de (23.5M shares, 9.56%), Vanguard group (18.98M shares, 7.85%), and Blackrock (17.55M shares, 7.53%). Together, they hold 24.94% of Ardelyx’s total shares outstanding.

Does Blackrock own Ardelyx?

Yes, BlackRock owns 7.53% of Ardelyx, totaling 17.55M shares as of Jun 2024. This represents 0.00% of BlackRock's total assets, with a market value of 130.06M$. In the last quarter, BlackRock increased its holdings by 456.52K shares, a 2.67% change.

Who is Ardelyx’s biggest shareholder by percentage of total assets invested?

Oracle investment management is Ardelyx’s biggest shareholder by percentage of total assets invested, with 3.85% of its assets in 1.43M Ardelyx shares, valued at 5.61M$.

Who is the top mutual fund holder of Ardelyx shares?

Macquarie Small Cap Core I is the top mutual fund holder of Ardelyx shares, with 3.57% of its total shares outstanding invested in 8.61M Ardelyx shares.

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