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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Portfolio quarterNameTypeQuantityRemainingReported stock balance
Q4 2021Causeway Capital ManagementSell-114,050172,099$2,014
Q4 2021Renaissance Technologies LLCSell-2,988,0004,316,534$50,503
Q3 2021Renaissance Technologies LLCSell-2,363,4167,304,534$83,491
Q2 2021Renaissance Technologies LLCSell-4,464,8009,667,950$91,362
Q1 2021Renaissance Technologies LLCSell-4,066,68414,132,750$128,749
Q4 2020Renaissance Technologies LLCSell-364,48318,199,434$153,421
Q3 2020Renaissance Technologies LLCSell-538,22218,563,917$88,921
Q2 2020Renaissance Technologies LLCBuy942,65919,102,139$50,430
Q1 2020Renaissance Technologies LLCBuy274,33018,159,480$39,406
Q4 2019Renaissance Technologies LLCBuy425,01217,885,150$47,932
Q3 2019Renaissance Technologies LLCBuy435,94917,460,138$36,492
Q2 2019Renaissance Technologies LLCBuy946,60017,024,189$37,623
Q1 2019Renaissance Technologies LLCBuy416,64816,077,589$30,226
Q4 2018Renaissance Technologies LLCSell-1,606,74815,660,941$28,033
Q3 2018Renaissance Technologies LLCBuy682,30017,267,689$44,551
Q1 2018Renaissance Technologies LLCBuy1,060,10016,585,389$42,956
Q4 2017Renaissance Technologies LLCBuy1,513,00015,525,289$37,105
Q3 2017Renaissance Technologies LLCSell-2,783,51014,012,289$35,031
Q2 2017Renaissance Technologies LLCBuy4,708,21016,795,799$40,982
Q1 2017Renaissance Technologies LLCBuy2,215,20012,087,589$23,329
Q4 2016Renaissance Technologies LLCBuy1,798,5649,872,389$17,277
Q3 2016Renaissance Technologies LLCBuy1,747,7258,073,825$14,937
Q2 2016Renaissance Technologies LLCBuy862,2006,326,100$12,589
Q1 2016Renaissance Technologies LLCBuy815,4145,463,900$11,365
Q4 2015Renaissance Technologies LLCBuy836,3864,648,486$8,739
Q3 2015Renaissance Technologies LLCBuy712,3003,812,100$6,176
Q2 2015Causeway Capital ManagementBuy165,900286,149$587
Q2 2015Renaissance Technologies LLCBuy572,9003,099,800$6,355
Q1 2015Renaissance Technologies LLCBuy425,5002,526,900$6,166
Q4 2014Renaissance Technologies LLCBuy24,6112,101,400$4,770

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.