HYDROFARM HOLDINGS GROUP, INC. (HYFM) — Institutional Holders, Q2 2026
23 institutional investment managers reported a HYFM position on SEC Form 13F-HR for the quarter ended June 30, 2026, with a combined reported value of $269.5K. Every filer is listed below, ranked by position value. Put and call option positions are excluded, and a firm filing several lots or share classes is shown once with its total.
HYFM in Q2 2026: what funds did
Funds that filed a 13F for both Q1 2026 and Q2 2026, by what they did with the common stock. Share counts are adjusted for any split between the two quarters; dollar figures are the change in shares at this quarter’s price.
Biggest buyers
- CITADEL ADVISORSNew · +23,985 sh+$20.4K
- Virtu FinancialNew · +14,696 sh+$12.5K
- Compass Ion AdvisorsNew · +10,753 sh+$9.1K
- SUSQUEHANNA INTERNATIONAL GROUP, LLPNew · +10,613 sh+$9.0K
- UBS Group AGAdded · +3,369 sh+$2.9K
Biggest sellers
- GEODE CAPITAL MANAGEMENTTrimmed · -28,928 sh-$24.6K
- XTX Topco LtdSold out · -11,784 sh-$10.0K
- RENAISSANCE TECHNOLOGIESTrimmed · -1,800 sh-$1.5K
- BNP PARIBAS FINANCIAL MARKETSTrimmed · -30 sh-$25.00
- Advisory Services NetworkSold out · -7 sh-$6.00
HYFM 13F holders ranked 1–23 of 23
| # | Institution | Shares | Value | % of portfolio | QoQShares vs Q1 2026 |
|---|---|---|---|---|---|
| 1 | RENAISSANCE TECHNOLOGIES#1 · 70,363 sh | 70,363 | $59.8K | <0.01% | -2.5% |
| 2 | BlackRock#2 · 50,465 sh | 50,465 | $42.9K | 0.00% | 0.0% |
| 3 | VANGUARD CAPITAL MANAGEMENT#3 · 39,683 sh | 39,683 | $33.7K | 0.00% | 0.0% |
| 4 | GEODE CAPITAL MANAGEMENT#4 · 33,658 sh | 33,658 | $28.6K | 0.00% | -46.2% |
| 5 | CITADEL ADVISORS#5 · 23,985 sh | 23,985 | $20.4K | 0.00% | New |
| 6 | VANGUARD FIDUCIARY#6 · 18,082 sh | 18,082 | $15.4K | 0.00% | 0.0% |
| 7 | STATE STREET#7 · 16,015 sh | 16,015 | $13.6K | 0.00% | 0.0% |
| 8 | Prentice Capital Management#8 · 14,736 sh | 14,736 | $12.5K | 0.02% | -67.6% |
| 9 | Virtu Financial#9 · 14,696 sh | 14,696 | $12.0K | <0.01% | New |
| 10 | Compass Ion Advisors#10 · 10,753 sh | 10,753 | $9.1K | — | New |
| 11 | SUSQUEHANNA INTERNATIONAL GROUP, LLP#11 · 10,613 sh | 10,613 | $9.0K | 0.00% | New |
| 12 | Tower Research Capital (TRC)#12 · 5,439 sh | 5,439 | $4.6K | <0.01% | +86.8% |
| 13 | UBS Group AG#13 · 4,331 sh | 4,331 | $3.7K | 0.00% | +350.2% |
| 14 | JNBA Financial Advisors#14 · 2,000 sh | 2,000 | $1.7K | <0.01% | 0.0% |
| 15 | Vanguard Global Advisers#15 · 1,269 sh | 1,269 | $1.1K | 0.00% | 0.0% |
| 16 | OSAIC#16 · 503 sh | 503 | $426.00 | 0.00% | +127.6% |
| 17 | North Star Investment Management#17 · 370 sh | 370 | $314.00 | — | 0.0% |
| 18 | GROUP ONE TRADING, L.P.#18 · 338 sh | 338 | $287.00 | 0.00% | 0.0% |
| 19 | BNP PARIBAS FINANCIAL MARKETS#19 · 198 sh | 198 | $168.00 | 0.00% | -13.2% |
| 20 | Hurley Capital#20 · 103 sh | 103 | $88.00 | 0.00% | 0.0% |
| 21 | MORGAN STANLEY#21 · 90 sh | 90 | $77.00 | 0.00% | 0.0% |
| 22 | JONES FINANCIAL COMPANIES LLLP#22 · 75 sh | 75 | $59.00 | 0.00% | 0.0% |
| 23 | ROYAL BANK OF CANADA#23 · 8 sh | 8 | $0.00 | 0.00% | 0.0% |
Funds that sold out of HYFM in Q2 2026 (2)
Held HYFM at the end of Q1 2026 and filed a Q2 2026 13F without it. Not in the list above, because they no longer hold it. Largest prior position first.
| Institution | Shares sold | Value in Q1 2026 |
|---|---|---|
| XTX Topco Ltd11,784 sh | 11,784 | $12.0K |
| Advisory Services Network7 sh | 7 | $7.00 |
Source: Form 13F-HR filings on SEC EDGAR, Q2 2026. Values are as reported by each manager at quarter end. “% of portfolio” is the position’s share of the manager’s total reported 13F value for the same quarter. “New” means the manager filed a 13F for Q1 2026 without this position; a dash means no comparison is available. Where a manager’s own filing is internally inconsistent its value is withheld and it is listed last. 13F data shows reported holdings, not recommendations.