United Microelectronic
270 hedge funds and large institutions have $1.19B invested in United Microelectronic in 2025 Q4 according to their latest regulatory filings, with 61 funds opening new positions, 119 increasing their positions, 55 reducing their positions, and 24 closing their positions.
154% more first-time investments, than exits
New positions opened: 61 | Existing positions closed: 24
116% more repeat investments, than reductions
Existing positions increased: 119 | Existing positions reduced: 55
18% more capital invested
Capital invested by funds: $1B → $1.19B (+$184M)
13% more funds holding
Funds holding: 240 → 270 (+30)
0.72% more ownership
Funds ownership: 5.28% → 6% (+0.72%)
59% less call options, than puts
Call options by funds: $5.2M | Put options by funds: $12.5M
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
AQR Capital Management
Greenwich,
Connecticut
|
+$64.4M |
| 2 |
BlackRock
New York
|
+$21.6M |
| 3 |
Acadian Asset Management
Boston,
Massachusetts
|
+$17.2M |
| 4 |
Two Sigma Investments
New York
|
+$16.3M |
| 5 |
Marshall Wace
London,
United Kingdom
|
+$14.7M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Morgan Stanley
New York
|
-$108M |
| 2 |
Bank of America
Charlotte,
North Carolina
|
-$13.5M |
| 3 |
Vanguard Group
Malvern,
Pennsylvania
|
-$5.53M |
| 4 |
JP Morgan Chase
New York
|
-$3.54M |
| 5 |
Squarepoint
New York
|
-$1.78M |
UMC Hedge Fund Activity: Q4 2025 in Review
270 of the 8,267 institutional investors tracked by Wall St. Rank reported a position in United Microelectronic (UMC) for Q4 2025, worth a combined $1.19B — up 18% from $1B a quarter earlier.
Buyers outnumbered sellers: 61 funds opened new UMC positions and 24 closed out — a net gain of 37 holders — while 119 added to existing stakes and 55 trimmed.
The largest buyer was AQR Capital Management, adding an estimated $64.4M. The largest seller was Morgan Stanley, cutting an estimated $108M.
- 270 institutional investors held United Microelectronic (UMC) as of Q4 2025, up from 240 in Q3 2025.
- Funds reported $1.19B of United Microelectronic stock for Q4 2025, up 18% quarter-over-quarter.
- 61 funds opened new United Microelectronic positions in Q4 2025 and 24 closed out, a net change of +37 holders.
- The largest United Microelectronic buyer in Q4 2025 was AQR Capital Management, an estimated $64.4M added.
- The largest United Microelectronic seller in Q4 2025 was Morgan Stanley, an estimated $108M sold.
Based on aggregated 13F filings for Q4 2025.