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One Stop Systems
OSS

33 hedge funds and large institutions have $12.3M invested in One Stop Systems in 2025 Q1 according to their latest regulatory filings, with 4 funds opening new positions, 16 increasing their positions, 7 reducing their positions, and 8 closing their positions.

New
Increased
Maintained
Reduced
Closed

129% more repeat investments, than reductions

Existing positions increased: 16 | Existing positions reduced: 7

1.21% more ownership

Funds ownership: 24.98% → 26.19% (+1.2%)

11% less funds holding

Funds holding: 37 → 33 (-4)

30% less capital invested

Capital invested by funds: $17.7M → $12.3M (-$5.33M)

50% less first-time investments, than exits

New positions opened: 4 | Existing positions closed: 8

51% less call options, than puts

Call options by funds: $55K | Put options by funds: $113K

Holders
33
Holders Change
-4
Holders Change %
-10.81%
% of All Funds
0.44%
Holding in Top 10
–
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
–
New
4
Increased
16
Reduced
7
Closed
8
Calls
$55K
Puts
$113K
Net Calls
-$58K
Net Calls Change
+$27K

Top Buyers

Rank Fund Capital Flow
1
ACM
Archon Capital Management
Washington
+$513K
2
Marshall Wace
Marshall Wace
United Kingdom
+$130K
3
Vanguard Group
Vanguard Group
Pennsylvania
+$117K
4
Renaissance Technologies
Renaissance Technologies
New York
+$76.9K
5
GCP
GSA Capital Partners
United Kingdom
+$44K

Top Sellers

Rank Fund Capital Flow
1
Citadel Advisors
Citadel Advisors
Florida
-$223K
2
Millennium Management
Millennium Management
New York
-$142K
3
TSS
Two Sigma Securities
New York
-$109K
4
PRCP
Pacific Ridge Capital Partners
Oregon
-$74.9K
5
VF
Virtu Financial
New York
-$72K
Name Holding Trade Value Shares
Change 		Change in
Stake
JP Morgan Chase
26
JP Morgan Chase
New York
$8.64K +$12.3K +3,684 +9,446%
TRCT
27
Tower Research Capital (TRC)
New York
$4.06K +$4.44K +1,325 +313%
MCM
28
MAI Capital Management
Ohio
$3.34K – – –
Wells Fargo
29
Wells Fargo
California
$2.32K – – –
Lazard Asset Management
30
Lazard Asset Management
New York
$1K +$1.81K +540 +177%
SS
31
SBI Securities
Japan
$698 +$1K +300 +30,000%
Bank of America
32
Bank of America
North Carolina
$350 +$23 +7 +5%
OP
33
ORG Partners
Indiana
$279 +$402 +120 New
Millennium Management
34
Millennium Management
New York
– -$142K -42,277 Closed
TSS
35
Two Sigma Securities
New York
– -$109K -32,560 Closed
VF
36
Virtu Financial
New York
– -$72K -21,639 Closed
DC
37
Diametric Capital
Massachusetts
– -$62.7K -18,721 Closed
SFG
38
Sovereign Financial Group
Connecticut
– -$59.3K -17,715 Closed
XT
39
XTX Topco
Cayman Islands
– -$36.4K -10,878 Closed
Wolverine Trading
40
Wolverine Trading
Illinois
– -$37.1K -10,511 Closed
Osaic Holdings
41
Osaic Holdings
Arizona
– -$1.68K -500 Closed
1
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OSS Hedge Fund Activity: Q1 2025 in Review

33 of the 7,461 institutional investors tracked by Wall St. Rank reported a position in One Stop Systems (OSS) for Q1 2025, worth a combined $12.3M — down 30% from $17.7M a quarter earlier.

Sellers outnumbered buyers: 8 funds closed out of OSS and 4 opened new positions — a net loss of 4 holders — while 7 trimmed existing stakes and 16 added.

The largest buyer was Archon Capital Management, opening a new position worth an estimated $513K. The largest seller was Citadel Advisors, cutting an estimated $223K.

  • 33 institutional investors held One Stop Systems (OSS) as of Q1 2025, down from 37 in Q4 2024.
  • Funds reported $12.3M of One Stop Systems stock for Q1 2025, down 30% quarter-over-quarter.
  • 4 funds opened new One Stop Systems positions in Q1 2025 and 8 closed out, a net change of -4 holders.
  • The largest One Stop Systems buyer in Q1 2025 was Archon Capital Management, an estimated $513K added.
  • The largest One Stop Systems seller in Q1 2025 was Citadel Advisors, an estimated $223K sold.

Based on aggregated 13F filings for Q1 2025.