HYFM
Hydrofarm Holdings Group, Inc.Company with tickers: HYFM
CIK
1695295
CUSIP
44888K407
Shares Outstanding
4,764,612
13F Activity (30d)
9 filings
9 filers
Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.
Holders: 15
Total Value: $158,779
Total Shares: 155,672
Institutional Ownership Trend
6 quarters
Holder Concentration
Across 15 13F filers · Δ vs Dec 31, 2025Top Holder
40.2%
−1.4 pts
Top 5
95.2%
−1.9 pts
Top 10
99.6%
−0.2 pts
HHI
2,570
Highly concentrated−547
Quarterly Activity
vs Dec 31, 2025
New
5
Increased
2
Decreased
3
Sold Out
3
Unchanged
5
Holder count:
+2
Institutional value:
-8.0%
Shares held:
+36.2%
Top Buyers
vs Dec 31, 2025| Institution | Added | Now Holds | Open |
|---|---|---|---|
| Mega GEODE CAPITAL MANAGEMENT, LLC | +14,989 | 62,586 | |
| Mega BNP PARIBAS ARBITRAGE, SA | +23 | 228 |
Top Sellers
vs Dec 31, 2025| Institution | Sold | Now Holds | Open |
|---|---|---|---|
| Mid Tower Research Capital LLC (TRC) | −652 | 2,911 | |
| Large OSAIC HOLDINGS, INC. | −30 | 221 | |
| Large JONES FINANCIAL COMPANIES LLLP | −2 | 75 |
Top New Positions
vs Dec 31, 2025| Institution | Acquired | Value (USD) | Open |
|---|---|---|---|
| Mega VANGUARD CAPITAL MANAGEMENT LLC | 39,683 | $40,476 | |
| Mega VANGUARD FIDUCIARY TRUST CO | 18,082 | $18,443 | |
| Mid XTX Topco Ltd | 11,784 | $12,019 | |
| Mega Vanguard Global Advisers, LLC | 1,269 | $1,294 | |
| Mid Advisory Services Network, LLC | 7 | $7 |
Top Sold-Out Positions
vs Dec 31, 2025| Institution | Previously Held | Last Value (USD) | Open |
|---|---|---|---|
| Mid DRW Securities, LLC | 38,840 | $58,648 | |
| Mega UBS Group AG | 4,925 | $7,434 | |
| Mid Sound Income Strategies, LLC | 3 | $4 |
| Holder | Value (USD) | % of 13F | Shares | Type | Discretion | Filed | Open | |||
|---|---|---|---|---|---|---|---|---|---|---|
| Mega GEODE CAPITAL MANAGEMENT, LLC | $63,837 | 40.20% | 62,586 | Shares | Defined | 2026-05-15 | ||||
| Mega VANGUARD CAPITAL MANAGEMENT LLC | $40,476 | 25.49% | 39,683 | Shares | Defined | 2026-05-15 | ||||
| Mega VANGUARD FIDUCIARY TRUST CO Bank | $18,443 | 11.62% | 18,082 | Shares | Defined | 2026-05-08 | ||||
| Mega STATE STREET CORP | $16,335 | 10.29% | 16,015 | Shares | Defined | 2026-05-15 | ||||
| Mid XTX Topco Ltd | $12,019 | 7.57% | 11,784 | Shares | Defined | 2026-05-15 | ||||
| Mid Tower Research Capital LLC (TRC) | $2,969 | 1.87% | 2,911 | Shares | Defined | 2026-05-15 | ||||
| Small JNBA Financial Advisors | $2,040 | 1.28% | 2,000 | Shares | Sole | 2026-04-23 | ||||
| Mega Vanguard Global Advisers, LLC | $1,294 | 0.81% | 1,269 | Shares | Defined | 2026-05-08 | ||||
| Mid North Star Investment Management Corp. | $377 | 0.24% | 370 | Shares | Sole | 2026-04-23 | ||||
| Mid GROUP ONE TRADING LLC | $344 | 0.22% | 338 | Shares | Sole | 2026-05-13 | ||||
| Mega BNP PARIBAS ARBITRAGE, SA | $232 | 0.15% | 228 | Shares | Defined | 2026-05-12 | ||||
| Large OSAIC HOLDINGS, INC. | $225 | 0.14% | 221 | Shares | Defined | 2026-05-15 | ||||
| Micro Hurley Capital, LLC | $105 | 0.07% | 103 | Shares | Sole | 2026-05-06 | ||||
| Large JONES FINANCIAL COMPANIES LLLP | $76 | 0.05% | 75 | Shares | Sole | 2026-05-15 | ||||
| Mid Advisory Services Network, LLC | $7 | 0.00% | 7 | Shares | Sole | 2026-05-15 | ||||
| No holders match your search. | ||||||||||