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Data I/O

26 hedge funds and large institutions have $10.6M invested in Data I/O in 2025 Q2 according to their latest regulatory filings, with 3 funds opening new positions, 10 increasing their positions, 6 reducing their positions, and 3 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
26
Holders Change
Holders Change %
0%
% of All Funds
0.35%
Holding in Top 10
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
3
Increased
10
Reduced
6
Closed
3
Calls
Puts
Net Calls
Net Calls Change
Name Holding Trade Value Shares
Change
Shares
Change %
KWM
1
Kanen Wealth Management
Florida
$2.59M
PM
2
Penbrook Management
New York
$1.74M +$985K +349,750 +130%
Renaissance Technologies
3
Renaissance Technologies
New York
$1.48M -$10.1K -3,272 -0.7%
Vanguard Group
4
Vanguard Group
Pennsylvania
$1.1M
KA
5
Kovack Advisors
Florida
$835K -$39K -12,575 -4%
Dimensional Fund Advisors
6
Dimensional Fund Advisors
Texas
$829K +$39.2K +12,758 +5%
Acadian Asset Management
7
Acadian Asset Management
Massachusetts
$408K -$40.8K -13,319 -9%
Bank of New York Mellon
8
Bank of New York Mellon
New York
$362K
Geode Capital Management
9
Geode Capital Management
Massachusetts
$300K -$415 -135 -0.1%
EIM
10
Essex Investment Management
Massachusetts
$231K +$95.9K +30,950 +71%
Citadel Advisors
11
Citadel Advisors
Florida
$130K +$3.52K +1,148 +3%
Susquehanna International Group
12
Susquehanna International Group
Pennsylvania
$69.7K +$69.7K +22,708 New
JIR
13
James Investment Research
Ohio
$69.4K +$21.7K +7,000 +45%
NA
14
NewEdge Advisors
Louisiana
$69.4K +$21.7K +7,000 +45%
BA
15
Bard Associates
Illinois
$66.7K -$1.38K -450 -2%
SPIA
16
Steward Partners Investment Advisory
New York
$64.8K +$64.8K +20,917 New
Northern Trust
17
Northern Trust
Illinois
$56.7K +$6.98K +2,253 +14%
LCM
18
Legato Capital Management
California
$54.4K +$21.3K +6,874 +64%
BlackRock
19
BlackRock
New York
$52.7K
State Street
20
State Street
Massachusetts
$49.6K
Simplex Trading
21
Simplex Trading
Illinois
$16K +$9.22K +2,987 +136%
TRCT
22
Tower Research Capital (TRC)
New York
$3.55K -$1.44K -463 -29%
Raymond James Financial
23
Raymond James Financial
Florida
$3.1K +$3.1K +1,000 New
Bank of America
24
Bank of America
North Carolina
$258 +$40 +13 +19%
HNB
25
Huntington National Bank
Ohio
$3