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One Stop Systems
OSS

69 hedge funds and large institutions have $66.8M invested in One Stop Systems in 2025 Q4 according to their latest regulatory filings, with 22 funds opening new positions, 25 increasing their positions, 17 reducing their positions, and 10 closing their positions.

New
Increased
Maintained
Reduced
Closed

255% more call options, than puts

Call options by funds: $3.15M | Put options by funds: $886K

120% more first-time investments, than exits

New positions opened: 22 | Existing positions closed: 10

47% more repeat investments, than reductions

Existing positions increased: 25 | Existing positions reduced: 17

28% more capital invested

Capital invested by funds: $52.1M → $66.8M (+$14.7M)

17% more funds holding

Funds holding: 59 → 69 (+10)

6.37% less ownership

Funds ownership: 44.3% → 37.93% (-6.4%)

Holders
69
Holders Change
+10
Holders Change %
+16.95%
% of All Funds
0.84%
Holding in Top 10
–
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
–
New
22
Increased
25
Reduced
17
Closed
10
Calls
$3.15M
Puts
$886K
Net Calls
+$2.26M
Net Calls Change
+$2.4M

Top Buyers

Rank Fund Capital Flow
1
Jane Street
Jane Street
New York
+$1.64M
2
BNP Paribas Financial Markets
BNP Paribas Financial Markets
France
+$1.35M
3
Vanguard Group
Vanguard Group
Pennsylvania
+$1.07M
4
TI
Trexquant Investment
Connecticut
+$971K
5
Arrowstreet Capital
Arrowstreet Capital
Massachusetts
+$836K

Top Sellers

Rank Fund Capital Flow
1
LLL
Lynrock Lake LP
New York
-$4.6M
2
Citadel Advisors
Citadel Advisors
Florida
-$4.25M
3
PAMP
Polar Asset Management Partners
Ontario, Canada
-$1.57M
4
Marshall Wace
Marshall Wace
United Kingdom
-$1.34M
5
ACM
Archon Capital Management
Washington
-$887K
Name Holding Trade Value Shares
Change 		Change in
Stake
6CM
26
683 Capital Management
New York
$648K +$534K +90,253 New
State Street
27
State Street
Massachusetts
$607K -$2.37K -400 -0.5%
EIM
28
Essex Investment Management
Massachusetts
$498K +$75.7K +12,806 +23%
JP Morgan Chase
29
JP Morgan Chase
New York
$491K +$404K +68,394 New
Morgan Stanley
30
Morgan Stanley
New York
$447K +$35.7K +6,037 +11%
Two Sigma Advisers
31
Two Sigma Advisers
New York
$398K +$164K +27,708 +100%
XT
32
XTX Topco
Cayman Islands
$394K -$102K -17,308 -24%
Qube Research & Technologies (QRT)
33
Qube Research & Technologies (QRT)
United Kingdom
$390K +$321K +54,309 New
BAM
34
Belpointe Asset Management
Nevada
$373K +$307K +52,000 New
Point72 Asset Management
35
Point72 Asset Management
Connecticut
$367K +$302K +51,093 New
OAC
36
OMERS Administration Corp
Ontario, Canada
$346K +$285K +48,200 New
Dimensional Fund Advisors
37
Dimensional Fund Advisors
Texas
$339K +$1.41K +238 +0.5%
PM
38
Penbrook Management
New York
$336K -$3.98K -673 -1%
Northern Trust
39
Northern Trust
Illinois
$301K +$35.5K +6,000 +17%
Millennium Management
40
Millennium Management
New York
$298K +$121K +20,524 +98%
OQS
41
Occudo Quantitative Strategies
Florida
$256K -$6.05K -1,023 -3%
EGM
42
Engineers Gate Manager
New York
$243K -$2.25K -381 -1%
Hudson Bay Capital Management
43
Hudson Bay Capital Management
Connecticut
$235K +$193K +32,688 New
SSA
44
Schonfeld Strategic Advisors
New York
$233K +$192K +32,471 New
HIM
45
Hillsdale Investment Management
Ontario, Canada
$221K +$182K +30,844 New
BHCM
46
Brevan Howard Capital Management
Jersey
$202K +$166K +28,140 New
Barclays
47
Barclays
United Kingdom
$166K +$116K +19,588 +559%
BTWM
48
Baker Tilly Wealth Management
Wisconsin
$144K – – –
TRCT
49
Tower Research Capital (TRC)
New York
$137K +$92.9K +15,712 +458%
LCM
50
Legato Capital Management
California
$117K +$17.9K +3,019 +23%
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OSS Hedge Fund Activity: Q4 2025 in Review

69 of the 8,223 institutional investors tracked by Wall St. Rank reported a position in One Stop Systems (OSS) for Q4 2025, worth a combined $66.8M — up 28% from $52.1M a quarter earlier.

Buyers outnumbered sellers: 22 funds opened new OSS positions and 10 closed out — a net gain of 12 holders — while 25 added to existing stakes and 17 trimmed.

The largest buyer was Jane Street, adding an estimated $1.64M. The largest seller was Lynrock Lake LP, cutting an estimated $4.6M.

  • 69 institutional investors held One Stop Systems (OSS) as of Q4 2025, up from 59 in Q3 2025.
  • Funds reported $66.8M of One Stop Systems stock for Q4 2025, up 28% quarter-over-quarter.
  • 22 funds opened new One Stop Systems positions in Q4 2025 and 10 closed out, a net change of +12 holders.
  • The largest One Stop Systems buyer in Q4 2025 was Jane Street, an estimated $1.64M added.
  • The largest One Stop Systems seller in Q4 2025 was Lynrock Lake LP, an estimated $4.6M sold.

Based on aggregated 13F filings for Q4 2025.