EIM
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Essex Investment Management’s One Stop Systems OSS Stock Holding History

Essex Investment Management’s Portfolio OSS Stock Details OSS Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$269K Sell
35,534
-33,822
-49% -$315K 0.04% 194
2025
Q4 		$498K Buy
69,356
+12,806
+23% +$75.7K 0.08% 168
2025
Q3 		$303K Sell
56,550
-16,241
-22% -$88.9K 0.05% 181
2025
Q2 		$258K Sell
72,791
-852
-1% -$2.38K 0.05% 181
2025
Q1 		$171K Sell
73,643
-152
-0.2% -$509 0.04% 189
2024
Q4 		$247K Sell
73,795
-8,516
-10% -$21.6K 0.04% 178
2024
Q3 		$197K Buy
82,311
+16,093
+24% +$35.6K 0.03% 191
2024
Q2 		$160K Sell
66,218
-62,683
-49% -$167K 0.03% 201
2024
Q1 		$420K Hold
128,901
– – 0.08% 177
2023
Q4 		$271K Sell
128,901
-46,952
-27% -$94.4K 0.05% 202
2023
Q3 		$325K Sell
175,853
-10,046
-5% -$23.4K 0.05% 253
2023
Q2 		$534K Buy
185,899
+6,240
+3% +$16.5K 0.07% 254
2023
Q1 		$446K Sell
179,659
-1,900
-1% -$5.71K 0.06% 255
2022
Q4 		$546K Sell
181,559
-94
-0.1% -$293 0.09% 243
2022
Q3 		$581K Sell
181,653
-12,361
-6% -$46.9K 0.09% 232
2022
Q2 		$764K Buy
194,014
+1,900
+1% +$8.1K 0.12% 217
2022
Q1 		$734K Buy
192,114
+4,675
+2% +$19.4K 0.09% 244
2021
Q4 		$928K Buy
187,439
+72,171
+63% +$362K 0.11% 236
2021
Q3 		$580K Sell
115,268
-2,076
-2% -$11.5K 0.07% 261
2021
Q2 		$679K Buy
117,344
+868
+0.7% +$4.9K 0.08% 260
2021
Q1 		$738K Sell
116,476
-32,000
-22% -$195K 0.09% 261
2020
Q4 		$594K Sell
148,476
-88,841
-37% -$231K 0.07% 273
2020
Q3 		$498K Buy
237,317
+52,579
+28% +$123K 0.07% 304
2020
Q2 		$364K Hold
184,738
– – 0.06% 282
2020
Q1 		$266K Buy
+184,738
New +$391K 0.05% 267
2019
Q4 		– Sell
-58,500
Closed -$172K – 504
2019
Q3 		$172K Buy
+58,500
New +$123K 0.02% 363

Other funds holding OSS

VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
Jane Street
Jane Street New York $777B AUM 61.18% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
BA
Bard Associates Chicago, Illinois $398M AUM 54.32% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return
Marshall Wace
Marshall Wace London, United Kingdom $100B AUM 35.1% 1-Year Est. Return
UBS Group
UBS Group Zurich, Switzerland $666B AUM 30.12% 1-Year Est. Return
Millennium Management
Millennium Management New York $240B AUM 35.51% 1-Year Est. Return
Citadel Advisors
Citadel Advisors Miami, Florida $618B AUM 30.34% 1-Year Est. Return
Renaissance Technologies
Renaissance Technologies New York $63.9B AUM 45.56% 1-Year Est. Return

Essex Investment Management's OSS Position: Q1 2026 in Review

Essex Investment Management reduced its One Stop Systems (OSS) stake by 49% in Q1 2026, selling an estimated $315K and leaving 35,534 shares worth $269K. The position accounts for 0.04% of the portfolio, ranked #194.

Essex Investment Management first reported a position in OSS in Q3 2019 and has held it in 26 quarters since. The position peaked at $928K in Q4 2021. 77 funds tracked by Wall St. Rank hold OSS as of Q1 2026.

  • Essex Investment Management held 35,534 shares of One Stop Systems worth $269K as of Q1 2026.
  • Essex Investment Management sold 33,822 One Stop Systems shares in Q1 2026, an estimated $315K.
  • One Stop Systems made up 0.04% of Essex Investment Management's portfolio in Q1 2026, its #194 holding.
  • Essex Investment Management first reported a position in One Stop Systems in Q3 2019 and has held it in 26 quarters since.
  • Essex Investment Management's One Stop Systems position peaked at $928K in Q4 2021.
  • 77 funds tracked by Wall St. Rank held One Stop Systems as of Q1 2026.

Based on Essex Investment Management's 13F filing for Q1 2026, filed 11 May 2026.