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Data I/O
DAIO

Overview Fund Activity

26 hedge funds and large institutions have $7.51M invested in Data I/O in 2025 Q1 according to their latest regulatory filings, with 1 funds opening new positions, 6 increasing their positions, 5 reducing their positions, and 4 closing their positions.

Holders
26
Holders Change
-3
Holders Change %
-10.34%
% of All Funds
0.35%
Holding in Top 10
–
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
–
New
1
Increased
6
Reduced
5
Closed
4
Calls
$7K
Puts
$13K
Net Calls
-$6K
Net Calls Change
–

Top Buyers

1
Dimensional Fund Advisors
1
Dimensional Fund Advisors
Texas
$631K
2
EIM
2
Essex Investment Management
Massachusetts
$107K
3
Citadel Advisors
3
Citadel Advisors
Florida
$101K
4
KA
4
Kovack Advisors
Florida
$691K
5
Simplex Trading
5
Simplex Trading
Illinois
$5K

Top Sellers

1
Susquehanna International Group
1
Susquehanna International Group
Pennsylvania
$0
2
Renaissance Technologies
2
Renaissance Technologies
New York
$1.18M
3
UBS Group
3
UBS Group
Switzerland
$0
4
Janney Montgomery Scott
4
Janney Montgomery Scott
Pennsylvania
$0
5
PM
5
Penbrook Management
New York
$660K
Name Market Value Shares Shares
Change 		Shares
Change %
KWM
1
Kanen Wealth Management
Florida
$2.06M 839,421 – –
Renaissance Technologies
2
Renaissance Technologies
New York
$1.18M 479,615 -24,028 -5%
Vanguard Group
3
Vanguard Group
Pennsylvania
$878K 358,458 -1,496 -0.4%
KA
4
Kovack Advisors
Florida
$691K 282,006 +2,200 +0.8%
PM
5
Penbrook Management
New York
$660K 269,450 -2,000 -0.7%
Dimensional Fund Advisors
6
Dimensional Fund Advisors
Texas
$631K 257,352 +8,381 +3%
Acadian Asset Management
7
Acadian Asset Management
Massachusetts
$358K 146,540 – –
Bank of New York Mellon
8
Bank of New York Mellon
New York
$286K 116,751 – –
Geode Capital Management
9
Geode Capital Management
Massachusetts
$240K 97,734 +1,222 +1%
EIM
10
Essex Investment Management
Massachusetts
$107K 43,691 +4,628 +12%
Citadel Advisors
11
Citadel Advisors
Florida
$101K 41,221 +3,115 +8%
BA
12
Bard Associates
Illinois
$54.4K 22,188 – –
BlackRock
13
BlackRock
New York
$41.7K 17,015 – –
State Street
14
State Street
Massachusetts
$39.6K 16,170 – –
Northern Trust
15
Northern Trust
Illinois
$39.3K 16,024 – –
SIC
16
Salem Investment Counselors
North Carolina
$38.7K 15,796 – –
NA
17
NewEdge Advisors
Louisiana
$37.7K 15,402 – –
JIR
18
James Investment Research
Ohio
$37.7K 15,402 – –
LCM
19
Legato Capital Management
California
$26.2K 10,676 – –
Simplex Trading
20
Simplex Trading
Illinois
$5K 2,194 +2,194 New
TRCT
21
Tower Research Capital (TRC)
New York
$3.94K 1,607 -76 -5%
CSC
22
Caldwell Sutter Capital
California
$1.44K 588 – –
Bank of America
23
Bank of America
North Carolina
$172 70 +3 +4%
JPMorgan Chase & Co
24
JPMorgan Chase & Co
New York
$42 17 -2 -11%
HNB
25
Huntington National Bank
Ohio
$2 1 – –
1
2