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Quantum Corp
QMCO

34 hedge funds and large institutions have $8.82M invested in Quantum Corp in 2025 Q2 according to their latest regulatory filings, with 13 funds opening new positions, 9 increasing their positions, 7 reducing their positions, and 8 closing their positions.

New
Increased
Maintained
Reduced
Closed

63% more first-time investments, than exits

New positions opened: 13 | Existing positions closed: 8

29% more repeat investments, than reductions

Existing positions increased: 9 | Existing positions reduced: 7

17% more funds holding

Funds holding: 29 → 34 (+5)

16.25% less ownership

Funds ownership: 28.98% → 12.72% (-16%)

64% less capital invested

Capital invested by funds: $24.3M → $8.82M (-$15.5M)

Holders
34
Holders Change
+5
Holders Change %
+17.24%
% of All Funds
0.45%
Holding in Top 10
–
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
–
New
13
Increased
9
Reduced
7
Closed
8
Calls
–
Puts
–
Net Calls
–
Net Calls Change
–

Top Buyers

Rank Fund Capital Flow
1
Marshall Wace
Marshall Wace
United Kingdom
+$1.97M
2
Morgan Stanley
Morgan Stanley
New York
+$481K
3
UBS Group
UBS Group
Switzerland
+$423K
4
SCA
Sassicaia Capital Advisers
New York
+$257K
5
Royal Bank of Canada
Royal Bank of Canada
Ontario, Canada
+$214K

Top Sellers

Rank Fund Capital Flow
1
Allianz Asset Management
Allianz Asset Management
Germany
-$13.8M
2
US
UNICOM Systems
Nevada
-$1.08M
3
Bank of America
Bank of America
North Carolina
-$825K
4
VF
Virtu Financial
New York
-$284K
5
CC
Centiva Capital
New York
-$225K
Name Holding Trade Value Shares
Change 		Change in
Stake
Barclays
26
Barclays
United Kingdom
$4.54K -$3.11K -281 -38%
Jones Financial Companies
27
Jones Financial Companies
Missouri
$4.47K +$851 +77 +18%
Fifth Third Bancorp
28
Fifth Third Bancorp
Ohio
$2.94K – – –
WT
29
Whittier Trust
California
$1.86K – – –
FFO
30
Fortitude Family Office
Arizona
$459 +$508 +46 New
RWM
31
Rialto Wealth Management
New York
$419 +$464 +42 New
Osaic Holdings
32
Osaic Holdings
Arizona
$348 +$111 +10 +40%
JP Morgan Chase
33
JP Morgan Chase
New York
$80 -$49.8K -4,505 -100%
FFA
34
Farther Finance Advisors
California
$40 – – –
AWM
35
Activest Wealth Management
Florida
$2 -$47.3K -4,283 Closed
Allianz Asset Management
36
Allianz Asset Management
Germany
– -$13.8M -962,127 Closed
US
37
UNICOM Systems
Nevada
– -$1.08M -75,237 Closed
VF
38
Virtu Financial
New York
– -$284K -19,721 Closed
CC
39
Centiva Capital
New York
– -$225K -15,667 Closed
Carson Wealth (CWM LLC)
40
Carson Wealth (CWM LLC)
Nebraska
– -$1K -65 Closed
CA
41
Continuum Advisory
Idaho
– -$489 -34 Closed
National Bank of Canada
42
National Bank of Canada
Quebec, Canada
– -$284 -20 Closed
1
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QMCO Hedge Fund Activity: Q2 2025 in Review

34 of the 7,599 institutional investors tracked by Wall St. Rank reported a position in Quantum Corp (QMCO) for Q2 2025, worth a combined $8.82M — down 64% from $24.3M a quarter earlier.

Buyers outnumbered sellers: 13 funds opened new QMCO positions and 8 closed out — a net gain of 5 holders — while 9 added to existing stakes and 7 trimmed.

The largest buyer was Marshall Wace, opening a new position worth an estimated $1.97M. The largest seller was Allianz Asset Management, exiting entirely with an estimated $13.8M sold.

  • 34 institutional investors held Quantum Corp (QMCO) as of Q2 2025, up from 29 in Q1 2025.
  • Funds reported $8.82M of Quantum Corp stock for Q2 2025, down 64% quarter-over-quarter.
  • 13 funds opened new Quantum Corp positions in Q2 2025 and 8 closed out, a net change of +5 holders.
  • The largest Quantum Corp buyer in Q2 2025 was Marshall Wace, an estimated $1.97M added.
  • The largest Quantum Corp seller in Q2 2025 was Allianz Asset Management, an estimated $13.8M sold.

Based on aggregated 13F filings for Q2 2025.