Ardelyx, Inc. (ARDX) ownership: Top institutional holder: BlackRock, Inc. ($126.77M). Insider activity: Net Seller (0 buys, 20 sells). SEC EDGAR first-party data.
| Holder | Shares | Market Value | Reported |
|---|---|---|---|
| BlackRock, Inc. | 21164132.00 | $126.77M | 2026-03-31 |
| VANGUARD GROUP INC | 18979483.00 | $110.65M | 2025-12-31 |
| MILLENNIUM MANAGEMENT LLC | 17842370.00 | $106.88M | 2026-03-31 |
| STATE STREET CORP | 13604307.00 | $81.49M | 2026-03-31 |
| VANGUARD CAPITAL MANAGEMENT LLC | 10365512.00 | $62.09M | 2026-03-31 |
| JANUS HENDERSON GROUP PLC | 8371234.00 | $50.14M | 2026-03-31 |
| NOMURA ASSET MANAGEMENT INTERNATIONAL INC. | 8169369.00 | $48.94M | 2026-03-31 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 6661693.00 | $39.90M | 2026-03-31 |
| Insider | Transaction | Value | Date |
|---|---|---|---|
| Sell | null | 2026-06-16 | |
| Sell | null | 2026-06-16 | |
| Sell | null | 2026-06-16 | |
| Sell | null | 2026-06-16 | |
| Sell | null | 2026-06-16 | |
| Sell | null | 2026-06-16 | |
| Sell | null | 2026-06-16 | |
| Sell | null | 2026-06-16 |
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Institutional data from SEC Form 13F. Insider data from SEC Form 4. Congressional data from STOCK Act disclosures. Not personalized investment advice.