Rafferty Asset Management, LLC

SEC CIK: 0001389426
Latest filing: Aug 14, 2026

SEC filings (opens in a new tab)

UMC holding history

United Microelectronics Corp in every 13F filed by Rafferty Asset Management, LLC, including the quarters it was sold out or no filing was made. Changes compare share counts with the previous calendar quarter.

UMC overview All 13F holders of UMC Full Q2 2026 holdings

Shares (Q2 2026): 7,653,378
Value: $208.2M
% of portfolio: 0.5%
Quarters held: 20; Since Q3 2021

Holdings of UMC by Rafferty Asset Management, LLC, by quarter
Quarter	Shares	Value	% of portfolio	Share change	Action	All holders
Q2 2026	7,653,378	$208.2M	0.5%	+2,669,725+53.6%	Added	Holders
Q1 2026	4,983,653	$44.8M	0.2%	−1,494,177−23.1%	Reduced	Holders
Q4 2025	6,477,830	$50.9M	0.2%	+257,129+4.1%	Added	Holders
Q3 2025	6,220,701	$47.2M	0.2%	−2,182,363−26.0%	Reduced	Holders
Q2 2025	8,403,064	$64.3M	0.2%	+2,826,486+50.7%	Added	Holders
Q1 2025	5,576,578	$39.9M	0.2%	−599,160−9.7%	Reduced	Holders
Q4 2024	6,175,738	$40.1M	0.1%	−309,759−4.8%	Reduced	Holders
Q3 2024	6,485,497	$54.6M	0.2%	+545,379+9.2%	Added	Holders
Q2 2024	5,940,118	$52.0M	0.2%	−687,874−10.4%	Reduced	Holders
Q1 2024	6,627,992	$53.6M	0.2%	+2,192,753+49.4%	Added	Holders
Q4 2023	4,435,239	$37.5M	0.2%	+355,186+8.7%	Added	Holders
Q3 2023	4,080,053	$28.8M	0.2%	−180,151−4.2%	Reduced	Holders
Q2 2023	4,260,204	$33.6M	0.2%	+933,493+28.1%	Added	Holders
Q1 2023	3,326,711	$29.1M	0.2%	+465,065+16.3%	Added	Holders
Q4 2022	2,861,646	$18.7M	0.2%	+135,734+5.0%	Added	Holders
Q3 2022	2,725,912	$15.2M	0.2%	+60,675+2.3%	Added	Holders
Q2 2022	2,665,237	$18.0M	0.2%	−709,948−21.0%	Reduced	Holders
Q1 2022	3,375,185	$30.8M	0.2%	+513,824+18.0%	Added	Holders
Q4 2021	2,861,361	$33.5M	0.2%	+1,021,414+55.5%	Added	Holders
Q3 2021	1,839,947	$21.0M	0.1%	+1,839,947	New	Holders