Hydrofarm Holdings GroupHYFM
13F holders, Q2 2026 (June 30)At the end of Q2 2026, 22 institutions reported holding Hydrofarm Holdings Group Inc. (HYFM) in their 13F filings, up 2 from Q1 2026. 4 opened new positions and 2 sold out. The largest holders were Renaissance Technologies ($60K), BlackRock, Inc. ($43K) and Vanguard Capital Management LLC ($34K). 2 famous investors held it, including Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio) and Ken Griffin (0.0% of Citadel Advisors's portfolio).
- Company
- Hydrofarm Holdings Group Inc.
- CUSIP
- 44888K407
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q1 2026 → Q2 2026
| Institutions | Total Value | |
|---|---|---|
| New Positions | 4 | $51K |
| Exits | 2 | $12K |
All 13F filers, Q1 2026 → Q2 2026: 66,226 shares bought and 42,549 shares sold, net +23,677 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 22 holders
| Renaissance Technologies | 0.00% | Reduce -2.5% | 70,363 | $60K |
| BlackRock, Inc. | 0.00% | No change | 50,465 | $43K |
| Vanguard Capital Management LLC | 0.00% | No change | 39,683 | $34K |
| Geode Capital Management, LLC | 0.00% | Reduce -46.2% | 33,658 | $29K |
| Citadel Advisors | 0.00% | New | 23,985 | $20K |
| Vanguard Fiduciary Trust Co. | 0.00% | No change | 18,082 | $15K |
| State Street Corp. | 0.00% | No change | 16,015 | $14K |
| Virtu Financial LLC | 0.00% | New | 14,696 | $12K |
| Compass Ion Advisors, LLC | 0.00% | New | 10,753 | $9K |
| Susquehanna International Group, LLP | 0.00% | New | 10,613 | $9K |
| Tower Research Capital LLC (TRC) | 0.00% | Add +86.8% | 5,439 | $5K |
| UBS Group AG | 0.00% | Add +350.2% | 4,331 | $4K |
| JNBA Financial Advisors | 0.00% | No change | 2,000 | $2K |
| Vanguard Global Advisers, LLC | 0.00% | No change | 1,269 | $1K |
| Osaic Holdings, Inc. | 0.00% | Add +127.6% | 503 | $426 |
| North Star Investment Management Corp. | 0.00% | No change | 370 | $314 |
| Group One Trading LLC | 0.00% | No change | 338 | $287 |
| BNP Paribas Financial Markets | 0.00% | Reduce -13.2% | 198 | $168 |
| Hurley Capital, LLC | 0.00% | No change | 103 | $88 |
| Morgan Stanley | 0.00% | No change | 90 | $77 |
| Jones Financial Companies LLLP | 0.00% | No change | 75 | $59 |
| Royal Bank of Canada | 0.00% | No change | 8 | $0 |
"% of holder's portfolio" is HYFM's weight in each manager's 13F, not the share of Hydrofarm Holdings Group Inc. the manager owns.