Simplex Trading
HDSN

Simplex Trading’s Hudson Technologies HDSN Stock Holding History

Simplex Trading’s Portfolio HDSN Stock Details HDSN Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$1.3K Sell
226
-660
-74% -$3.75K ﹤0.01% 8777
2026
Q1 		$5.21K Sell
886
-274
-24% -$1.88K ﹤0.01% 7861
2025
Q4 		$7.95K Sell
1,160
-14,707
-93% -$116K ﹤0.01% 7141
2025
Q3 		$157K Sell
15,867
-73,563
-82% -$690K ﹤0.01% 5218
2025
Q2 		$726K Buy
+89,430
New +$613K ﹤0.01% 3130
2024
Q4 		– Sell
-276
Closed -$1.82K – 8958
2024
Q3 		$2K Sell
276
-5,652
-95% -$46.8K ﹤0.01% 8003
2024
Q2 		$52K Sell
5,928
-14,647
-71% -$142K ﹤0.01% 6045
2024
Q1 		$226K Buy
20,575
+19,423
+1,686% +$253K ﹤0.01% 4712
2023
Q4 		$15K Buy
+1,152
New +$14.9K ﹤0.01% 7134
2023
Q2 		– Sell
-4,966
Closed -$43.2K – 9348
2023
Q1 		$43K Buy
+4,966
New +$48.1K ﹤0.01% 6094
2022
Q3 		– Sell
-16,197
Closed -$136K – 10300
2022
Q2 		$121K Sell
16,197
-13,587
-46% -$112K ﹤0.01% 5297
2022
Q1 		$184K Buy
29,784
+12,452
+72% +$55.2K ﹤0.01% 5276
2021
Q4 		$76K Buy
17,332
+15,154
+696% +$58.8K ﹤0.01% 6656
2021
Q3 		$7K Sell
2,178
-4,994
-70% -$16.7K ﹤0.01% 9110
2021
Q2 		$24K Buy
7,172
+2,266
+46% +$5.46K ﹤0.01% 8422
2021
Q1 		$7K Buy
+4,906
New +$7.12K ﹤0.01% 8070
2019
Q4 		– Sell
-200
Closed -$134 – 7543
2019
Q3 		$0 Sell
200
-13,796
-99% -$8.55K ﹤0.01% 7490
2019
Q2 		$12K Buy
+13,996
New +$22.3K ﹤0.01% 5994
2019
Q1 		– Sell
-13,840
Closed -$19.5K – 7385
2018
Q4 		$12K Buy
13,840
+12,896
+1,366% +$14.2K ﹤0.01% 5730
2018
Q3 		$1K Sell
944
-1,897
-67% -$3.36K ﹤0.01% 7189
2018
Q2 		$5K Sell
2,841
-4,615
-62% -$15K ﹤0.01% 6702
2018
Q1 		$36K Buy
+7,456
New +$43.9K ﹤0.01% 2752
2017
Q2 		– Sell
-6,833
Closed -$52.3K – 6369
2017
Q1 		$45K Buy
+6,833
New +$49.7K ﹤0.01% 2468
2016
Q4 		– Sell
-420
Closed -$2.96K – 6094
2016
Q3 		$2K Buy
+420
New +$2.22K ﹤0.01% 4952

Other funds holding HDSN

HP
Hartree Partners New York $469M AUM 46.64% 1-Year Est. Return
WCM
Westerly Capital Management San Francisco, California $542M AUM 48.48% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Renaissance Technologies
Renaissance Technologies New York $72.6B AUM 54.88% 1-Year Est. Return
American Century Companies
American Century Companies Kansas City, Missouri $226B AUM 44.75% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.38T AUM 44.17% 1-Year Est. Return
Arrowstreet Capital
Arrowstreet Capital Boston, Massachusetts $225B AUM 49.49% 1-Year Est. Return

Simplex Trading's HDSN Position: Q2 2026 in Review

Simplex Trading reduced its Hudson Technologies (HDSN) stake by 74% in Q2 2026, selling an estimated $3.75K and leaving 226 shares worth $1.3K. The position accounts for ﹤0.01% of the portfolio, ranked #8777.

Simplex Trading first reported a position in HDSN in Q3 2016 and has held it in 24 quarters since. The position peaked at $726K in Q2 2025. 151 funds tracked by Wall St. Rank hold HDSN as of Q2 2026.

  • Simplex Trading held 226 shares of Hudson Technologies worth $1.3K as of Q2 2026.
  • Simplex Trading sold 660 Hudson Technologies shares in Q2 2026, an estimated $3.75K.
  • Hudson Technologies made up ﹤0.01% of Simplex Trading's portfolio in Q2 2026, its #8777 holding.
  • Simplex Trading first reported a position in Hudson Technologies in Q3 2016 and has held it in 24 quarters since.
  • Simplex Trading's Hudson Technologies position peaked at $726K in Q2 2025.
  • 151 funds tracked by Wall St. Rank held Hudson Technologies as of Q2 2026.

Based on Simplex Trading's 13F filing for Q2 2026, filed 12 Aug 2026.