UNITED MICROELECTRON-SP ADR (UMC) Stock Institutional Trading Activity
UNITED MICROELECTRON-SP ADR (UMC) position changes reported by tracked institutional filers across multiple SEC 13F reporting periods. Based on recent SEC 13F filings (Q3 2025), investors with some of the largest reported share count changes include Sequoia Financial Advisors, Renaissance Technologies LLC, and Causeway Capital Management. Explore insights into buying and selling patterns, position changes, and investment conviction levels to understand institutional trading behavior and market dynamics.
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- UNITED MICROELECTRON-SP ADR (UMC) stock institutional ownership
- UNITED MICROELECTRON-SP ADR (UMC) stock insider trading activity
- Stock rankings
| Portfolio quarter | Name | Type | Quantity | Remaining | Reported stock balance |
|---|---|---|---|---|---|
| Q3 2014 | Renaissance Technologies LLC | Buy | 1,024,289 | 2,076,789 | $4,133 |
| Q2 2014 | Renaissance Technologies LLC | Buy | 975,800 | 1,052,500 | $2,537 |
| Q1 2014 | Renaissance Technologies LLC | Sell | -1,266,689 | 76,700 | $160 |
| Q1 2014 | Causeway Capital Management | Sell | -81,900 | 120,249 | $250 |
| Q4 2013 | Causeway Capital Management | Sell | -566,000 | 202,149 | $263 |
| Q4 2013 | Renaissance Technologies LLC | Buy | 179,715 | 1,343,389 | $2,741 |
| Q3 2013 | Causeway Capital Management | Sell | -3,677,100 | 768,149 | $508 |
| Q3 2013 | Renaissance Technologies LLC | Sell | -663,895 | 1,163,674 | $2,397 |
| Q2 2013 | Causeway Capital Management | Buy | 4,445,249 | 4,445,249 | $2,314 |
| Q2 2013 | Renaissance Technologies LLC | Buy | 1,827,569 | 1,827,569 | $4,258 |
Frequently asked questions about UMC activity
Which institutional owners are buying UMC?
Institutional owners buying UMC include investors who have either initiated new positions or increased their existing holdings based on recent SEC 13F filings. The activity table above highlights which funds added shares in the latest reporting periods and how their positions changed over time.
What does "buy" mean in UMC activity?
"Buy" means an investor increased their reported position in UMC compared to the prior reporting period. This reflects growing exposure to UNITED MICROELECTRON-SP ADR (UMC) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).
Is institutional interest in UMC increasing?
Institutional interest in UMC can be assessed by comparing the number of tracked funds adding or increasing positions versus those trimming or exiting across the periods shown. A higher number of additions typically signals increasing participation among large filers, but it should be read alongside position sizes and the full table.