Question 1

Does Wellington Management Group own UMC stock?

Accepted Answer

Yes. As of its Q2 2026 13F, Wellington Management Group holds 231,006 shares of UMC (United Microelectronics), worth $6.3M.

Question 2

How many shares of UMC does Wellington Management Group own?

Accepted Answer

As of its Q2 2026 13F, Wellington Management Group holds 231,006 shares of UMC (United Microelectronics).

Question 3

What is Wellington Management Group's UMC position worth?

Accepted Answer

As of its Q2 2026 13F, Wellington Management Group's UMC position is worth $6.3M.

Question 4

Is Wellington Management Group buying or selling UMC?

Accepted Answer

In Q2 2026, Wellington Management Group increased its UMC position by 133,779 shares (+137.6%).

Question 5

When did Wellington Management Group first buy UMC?

Accepted Answer

Wellington Management Group already held UMC in its Q3 2019 13F, the earliest on record, and has listed it in 17 quarterly 13F filings.

Quarter	Action	Shares	Change	Value	Weight	Price	Conviction
2026-Q2 Latest	Increased	231,006	+137.6%	$6.3M	0.0%	$26.74	44
2026-Q1	New	97,227	—	$873,098	0.0%	$8.82	34
2025-Q1	Exited	0	-100.0%	$0	0.0%	$6.61	0
2024-Q4	New	58,333	—	$378,581	0.0%	$6.00	33