Mariner’s Ardelyx ARDX Stock Holding History

Mariner’s Portfolio ARDX Stock Details ARDX Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q2	$275K	Sell	53,978 -16,520	-23%	-$101K	﹤0.01%	2909
2026 Q1	$422K	Buy	70,498 +35,056	+99%	+$232K	﹤0.01%	2609
2025 Q4	$206K	Sell	35,442 -3,058	-8%	-$17K	﹤0.01%	3142
2025 Q3	$212K	Buy	38,500 +19,547	+103%	+$106K	﹤0.01%	3123
2025 Q2	$74.3K	Buy	+18,953	New	+$78.2K	﹤0.01%	3289
2024 Q1	–	Sell	-22,525	Closed	-$140K	–	3137
2023 Q4	$140K	Buy	+22,525	New	+$101K	﹤0.01%	2791

Other funds holding ARDX

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

RCMNY

Rubric Capital Management (New York) New York $10.9B AUM 70.31% 1-Year Est. Return

Millennium Management New York $276B AUM 44.8% 1-Year Est. Return

State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

NAMI

Nomura Asset Management International Philadelphia, Pennsylvania $66.6B AUM

Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

Jupiter Topco New York $245B AUM

Two Sigma Investments New York $138B AUM 41.87% 1-Year Est. Return

Mariner's ARDX Position: Q2 2026 in Review

Mariner reduced its Ardelyx (ARDX) stake by 23% in Q2 2026, selling an estimated $101K and leaving 53,978 shares worth $275K. The position accounts for ﹤0.01% of the portfolio, ranked #2909.

Mariner first reported a position in ARDX in Q4 2023 and has held it in 6 quarters since. The position peaked at $422K in Q1 2026. 249 funds tracked by Wall St. Rank hold ARDX as of Q2 2026.

Mariner held 53,978 shares of Ardelyx worth $275K as of Q2 2026.
Mariner sold 16,520 Ardelyx shares in Q2 2026, an estimated $101K.
Ardelyx made up ﹤0.01% of Mariner's portfolio in Q2 2026, its #2909 holding.
Mariner first reported a position in Ardelyx in Q4 2023 and has held it in 6 quarters since.
Mariner's Ardelyx position peaked at $422K in Q1 2026.
249 funds tracked by Wall St. Rank held Ardelyx as of Q2 2026.

Based on Mariner's 13F filing for Q2 2026, filed 13 Aug 2026.