Ken Griffin
HYFM icon

Ken Griffin’s Hydrofarm Holdings HYFM Stock Holding History

Ken Griffin’s Portfolio HYFM Stock Details HYFM Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2025
Q4 		– Sell
-18,079
Closed -$59.5K – 13254
2025
Q3 		$59.5K Buy
+18,079
New +$71.6K ﹤0.01% 12105
2023
Q1 		– Sell
-4,228
Closed -$74.8K – 15047
2022
Q4 		$65.5K Sell
4,228
-1,439
-25% -$32.9K ﹤0.01% 11791
2022
Q3 		$110K Sell
5,667
-12,694
-69% -$408K ﹤0.01% 11003
2022
Q2 		$639K Buy
18,361
+16,348
+812% +$1.33M ﹤0.01% 8093
2022
Q1 		$305K Sell
2,013
-20,377
-91% -$3.8M ﹤0.01% 10554
2021
Q4 		$6.33M Buy
22,390
+10,447
+87% +$3.54M ﹤0.01% 3881
2021
Q3 		$4.52M Sell
11,943
-16,702
-58% -$8.11M ﹤0.01% 4501
2021
Q2 		$16.9M Buy
28,645
+25,470
+802% +$15M ﹤0.01% 2296
2021
Q1 		$1.92M Sell
3,175
-5,949
-65% -$4.17M ﹤0.01% 6487
2020
Q4 		$4.8M Buy
+9,124
New +$4.78M ﹤0.01% 3766

Other funds holding HYFM

Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
Renaissance Technologies
Renaissance Technologies New York $72.6B AUM 54.88% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
PCM
Prentice Capital Management Greenwich, Connecticut $45.7M AUM 2.65% 1-Year Est. Return
DS
DRW Securities Chicago, Illinois $7.21B AUM 20.54% 1-Year Est. Return
Jane Street
Jane Street New York $777B AUM 61.18% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
UBS Group
UBS Group Zurich, Switzerland $786B AUM 40.34% 1-Year Est. Return
TRCT
Tower Research Capital (TRC) New York $4.08B AUM 58.77% 1-Year Est. Return

Ken Griffin's HYFM Position: Q4 2025 in Review

Ken Griffin sold out of Hydrofarm Holdings (HYFM) in Q4 2025, closing a stake of 18,079 shares — an estimated $59.5K sold.

Ken Griffin first reported a position in HYFM in Q4 2020 and held it in 10 quarters. The position peaked at $16.9M in Q2 2021. 22 funds tracked by Wall St. Rank hold HYFM as of Q4 2025.

  • Ken Griffin reported no remaining Hydrofarm Holdings position as of Q4 2025 after selling out during the quarter.
  • Ken Griffin sold 18,079 Hydrofarm Holdings shares in Q4 2025, an estimated $59.5K.
  • Ken Griffin first reported a position in Hydrofarm Holdings in Q4 2020 and held it in 10 quarters.
  • Ken Griffin's Hydrofarm Holdings position peaked at $16.9M in Q2 2021.
  • 22 funds tracked by Wall St. Rank held Hydrofarm Holdings as of Q4 2025.

Based on Citadel Advisors's 13F filing for Q4 2025, filed 17 Feb 2026.