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One Stop Systems
OSS

77 hedge funds and large institutions have $63.1M invested in One Stop Systems in 2026 Q1 according to their latest regulatory filings, with 27 funds opening new positions, 22 increasing their positions, 22 reducing their positions, and 18 closing their positions.

New
Increased
Maintained
Reduced
Closed

103% more call options, than puts

Call options by funds: $8.54M | Put options by funds: $4.2M

50% more first-time investments, than exits

New positions opened: 27 | Existing positions closed: 18

12% more funds holding

Funds holding: 69 → 77 (+8)

0% more repeat investments, than reductions

Existing positions increased: 22 | Existing positions reduced: 22

4.24% less ownership

Funds ownership: 37.93% → 33.69% (-4.2%)

5% less capital invested

Capital invested by funds: $66.8M → $63.1M (-$3.65M)

Holders
77
Holders Change
+8
Holders Change %
+11.59%
% of All Funds
0.95%
Holding in Top 10
–
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
–
New
27
Increased
22
Reduced
22
Closed
18
Calls
$8.54M
Puts
$4.2M
Net Calls
+$4.34M
Net Calls Change
+$2.08M

Top Buyers

Rank Fund Capital Flow
1
BlackRock
BlackRock
New York
+$4.29M
2
UBS Group
UBS Group
Switzerland
+$3.73M
3
Morgan Stanley
Morgan Stanley
New York
+$3.45M
4
Millennium Management
Millennium Management
New York
+$3.35M
5
Jane Street
Jane Street
New York
+$2.52M

Top Sellers

Rank Fund Capital Flow
1
LLL
Lynrock Lake LP
New York
-$6.2M
2
Arrowstreet Capital
Arrowstreet Capital
Massachusetts
-$4.98M
3
PRCP
Pacific Ridge Capital Partners
Oregon
-$3.1M
4
BA
Bard Associates
Illinois
-$2.89M
5
ACM
Archon Capital Management
Washington
-$2.35M
Name Holding Trade Value Shares
Change 		Change in
Stake
OAM
26
Oxford Asset Management
United Kingdom
$488K +$600K +64,403 New
VF
27
Virtu Financial
New York
$465K +$573K +61,458 New
6CM
28
683 Capital Management
New York
$454K -$282K -30,253 -34%
Squarepoint
29
Squarepoint
New York
$443K -$834K -89,484 -60%
XT
30
XTX Topco
Cayman Islands
$385K -$36.8K -3,944 -7%
Northern Trust
31
Northern Trust
Illinois
$356K +$47.1K +5,051 +12%
PM
32
Penbrook Management
New York
$354K – – –
BHCM
33
Brevan Howard Capital Management
Jersey
$327K +$140K +15,031 +53%
Stifel Financial
34
Stifel Financial
Missouri
$287K +$353K +37,913 New
Hudson Bay Capital Management
35
Hudson Bay Capital Management
Connecticut
$283K +$43.7K +4,688 +14%
EIM
36
Essex Investment Management
Massachusetts
$269K -$315K -33,822 -49%
CC
37
Centiva Capital
New York
$255K +$207K +22,161 +193%
SSA
38
Schonfeld Strategic Advisors
New York
$223K -$27.9K -2,991 -9%
EGM
39
Engineers Gate Manager
New York
$220K -$45.2K -4,853 -14%
HIM
40
Hillsdale Investment Management
Ontario, Canada
$218K -$18.6K -2,000 -6%
SG Americas Securities
41
SG Americas Securities
New York
$212K +$261K +28,022 New
MP
42
Mangrove Partners
Connecticut
$181K +$223K +23,889 New
Bank of America
43
Bank of America
North Carolina
$176K +$217K +23,221 +129,006%
AWM
44
Apollon Wealth Management
South Carolina
$159K +$196K +21,040 New
Barclays
45
Barclays
United Kingdom
$155K -$24.2K -2,591 -11%
BTWM
46
Baker Tilly Wealth Management
Wisconsin
$151K – – –
LCM
47
Landscape Capital Management
New Jersey
$131K +$161K +17,269 New
OQS
48
Occudo Quantitative Strategies
Florida
$130K -$204K -21,867 -61%
ACM
49
Anfield Capital Management
California
$129K +$159K +17,000 New
OAC
50
OMERS Administration Corp
Ontario, Canada
$115K -$308K -33,000 -68%
1
2
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OSS Hedge Fund Activity: Q1 2026 in Review

77 of the 8,126 institutional investors tracked by Wall St. Rank reported a position in One Stop Systems (OSS) for Q1 2026, worth a combined $63.1M — down 5.5% from $66.8M a quarter earlier.

Buyers outnumbered sellers: 27 funds opened new OSS positions and 18 closed out — a net gain of 9 holders — while 22 added to existing stakes and 22 trimmed.

The largest buyer was BlackRock, adding an estimated $4.29M. The largest seller was Lynrock Lake LP, cutting an estimated $6.2M.

  • 77 institutional investors held One Stop Systems (OSS) as of Q1 2026, up from 69 in Q4 2025.
  • Funds reported $63.1M of One Stop Systems stock for Q1 2026, down 5.5% quarter-over-quarter.
  • 27 funds opened new One Stop Systems positions in Q1 2026 and 18 closed out, a net change of +9 holders.
  • The largest One Stop Systems buyer in Q1 2026 was BlackRock, an estimated $4.29M added.
  • The largest One Stop Systems seller in Q1 2026 was Lynrock Lake LP, an estimated $6.2M sold.

Based on aggregated 13F filings for Q1 2026.