ARDX ARDELYX, INC.: institutional ownership and insider trading
262 funds reported holding $1.10B of ARDELYX, INC. in their latest 13F filings; in Q2 2026 funds net bought $57.4M, with 40 new positions and 33 funds selling out; over the last 12 months insiders bought $1.95M and sold $4.30M on the open market.
Famous investors holding ARDX
- Izzy Englander (Millennium Management): $72.8M, 0.0% of the portfolio
- Two Sigma (Two Sigma Investments): $26.6M, 0.0% of the portfolio
- Renaissance Technologies (Renaissance Technologies): $4.55M, 0.0% of the portfolio
- Ken Griffin (Citadel Advisors): $7.24M, 0.0% of the portfolio
- D. E. Shaw (D. E. Shaw & Co.): $66.7K, 0.0% of the portfolio
Largest institutional holders of ARDX
- BlackRock, Inc. (BLK) — $120M
- VANGUARD GROUP INC — $111M
- Rubric Capital Management LP — $82.6M
- MILLENNIUM MANAGEMENT LLC — $72.8M
- STATE STREET CORP (STT, STT-PG) — $68.1M
- VANGUARD CAPITAL MANAGEMENT LLC — $53.4M
- JANUS HENDERSON GROUP PLC (JHG) — $50.1M
- NOMURA ASSET MANAGEMENT INTERNATIONAL INC. — $48.7M
- VANGUARD PORTFOLIO MANAGEMENT LLC — $40.9M
- GEODE CAPITAL MANAGEMENT, LLC — $32.7M
Recent ARDX insider trades
- Aug 21, 2026: Bishop John E sold 19,750 shares ($76.2K)
- Aug 21, 2026: Raab Michael sold 58,574 shares ($226K)
- Aug 21, 2026: Williams Laura A sold 10,739 shares ($41.5K)
- Aug 21, 2026: Kelliher Mike sold 7,758 shares ($29.9K)
5%+ owners
- Rubric Capital Management LP: 6.6% (Schedule 13G, filed Aug 14, 2026)
- Millennium Management LLC: 5.7% (Schedule 13G/A, filed Aug 11, 2026)
- STATE STREET CORPORATION: 5.5% (Schedule 13G, filed May 12, 2026)