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United Microelectronic
UMC

239 hedge funds and large institutions have $1B invested in United Microelectronic in 2025 Q3 according to their latest regulatory filings, with 41 funds opening new positions, 80 increasing their positions, 88 reducing their positions, and 38 closing their positions.

New
Increased
Maintained
Reduced
Closed

8% more first-time investments, than exits

New positions opened: 41 | Existing positions closed: 38

0% more funds holding

Funds holding: 238 → 239 (+1)

0.74% less ownership

Funds ownership: 6.02% → 5.28% (-0.74%)

9% less repeat investments, than reductions

Existing positions increased: 80 | Existing positions reduced: 88

13% less capital invested

Capital invested by funds: $1.16B → $1B (-$154M)

69% less call options, than puts

Call options by funds: $3.83M | Put options by funds: $12.2M

Holders
239
Holders Change
+1
Holders Change %
+0.42%
% of All Funds
3.14%
Holding in Top 10
–
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
–
New
41
Increased
80
Reduced
88
Closed
38
Calls
$3.83M
Puts
$12.2M
Net Calls
-$8.36M
Net Calls Change
-$1.45M

Top Buyers

Rank Fund Capital Flow
1
Two Sigma Investments
Two Sigma Investments
New York
+$22.4M
2
Marshall Wace
Marshall Wace
United Kingdom
+$19.9M
3
Two Sigma Advisers
Two Sigma Advisers
New York
+$11.3M
4
Man Group
Man Group
United Kingdom
+$3.29M
5
Bank of America
Bank of America
North Carolina
+$2.44M

Top Sellers

Rank Fund Capital Flow
1
UBS Group
UBS Group
Switzerland
-$93.1M
2
MRCP
Maple Rock Capital Partners
Ontario, Canada
-$24M
3
Rafferty Asset Management
Rafferty Asset Management
New York
-$15.5M
4
KC
Kadensa Capital
Hong Kong
-$10.2M
5
Citigroup
Citigroup
New York
-$10.2M
Name Holding Trade Value Shares
Change 		Change in
Stake
Baird Financial Group
26
Baird Financial Group
Wisconsin
$4M +$19.6K +2,759 +0.5%
Man Group
27
Man Group
United Kingdom
$3.66M +$3.29M +463,187 +2,394%
Susquehanna International Group
28
Susquehanna International Group
Pennsylvania
$3.31M +$540K +76,127 +21%
EI
29
Ethic Inc
New York
$3.22M +$578K +81,418 +24%
First Trust Advisors
30
First Trust Advisors
Illinois
$3.17M +$2.17M +305,479 +272%
QCM
31
Quantinno Capital Management
New York
$3.02M +$367K +51,695 +15%
GC
32
Guggenheim Capital
Illinois
$2.93M +$253K +35,654 +10%
OSAM
33
O'Shaughnessy Asset Management
Connecticut
$2.8M -$115K -16,221 -4%
VPIM
34
Vanguard Personalized Indexing Management
California
$2.53M -$230K -32,357 -9%
QCG
35
Quadrant Capital Group
Ohio
$2.52M -$461K -64,997 -16%
LNWWM
36
Laird Norton Wetherby Wealth Management
California
$2.43M -$47.2K -6,648 -2%
Millennium Management
37
Millennium Management
New York
$2.36M +$1.8M +253,131 +431%
SAM
38
Storebrand Asset Management
Norway
$2.33M – – –
ACM
39
Aquatic Capital Management
Illinois
$2.16M +$2.02M +285,011 New
AAM
40
Advisors Asset Management
Colorado
$2.1M +$291K +41,077 +17%
CGH
41
Crossmark Global Holdings
Texas
$1.97M -$7.24M -1,021,224 -80%
Mackenzie Financial
42
Mackenzie Financial
Ontario, Canada
$1.91M +$1.27M +179,182 +246%
Jane Street
43
Jane Street
New York
$1.89M +$1.77M +249,861 New
Cerity Partners
44
Cerity Partners
New York
$1.84M +$1.58K +223 +0.1%
QT
45
Quantbot Technologies
New York
$1.79M +$1.61M +227,633 +2,856%
Squarepoint
46
Squarepoint
New York
$1.78M +$607K +85,546 +58%
S
47
SignatureFD
Georgia
$1.72M -$38.9K -5,487 -2%
JF
48
Jump Financial
Illinois
$1.69M +$1.58M +223,348 New
Fidelity Investments
49
Fidelity Investments
Massachusetts
$1.63M -$34.9K -4,923 -2%
IC
50
IEQ Capital
California
$1.41M +$744K +104,956 +129%
1
2
3 4 5

UMC Hedge Fund Activity: Q3 2025 in Review

239 of the 7,619 institutional investors tracked by Wall St. Rank reported a position in United Microelectronic (UMC) for Q3 2025, worth a combined $1B — down 13% from $1.16B a quarter earlier.

Buyers outnumbered sellers: 41 funds opened new UMC positions and 38 closed out — a net gain of 3 holders — while 80 added to existing stakes and 88 trimmed.

The largest buyer was Two Sigma Investments, adding an estimated $22.4M. The largest seller was UBS Group, cutting an estimated $93.1M.

  • 239 institutional investors held United Microelectronic (UMC) as of Q3 2025, up from 238 in Q2 2025.
  • Funds reported $1B of United Microelectronic stock for Q3 2025, down 13% quarter-over-quarter.
  • 41 funds opened new United Microelectronic positions in Q3 2025 and 38 closed out, a net change of +3 holders.
  • The largest United Microelectronic buyer in Q3 2025 was Two Sigma Investments, an estimated $22.4M added.
  • The largest United Microelectronic seller in Q3 2025 was UBS Group, an estimated $93.1M sold.

Based on aggregated 13F filings for Q3 2025.