Question 1

Does Vanguard Personalized Indexing Management own UMC stock?

Accepted Answer

Yes. As of its Q2 2026 13F, Vanguard Personalized Indexing Management holds 434,448 shares of UMC (United Microelectronics), worth $11.8M.

Question 2

How many shares of UMC does Vanguard Personalized Indexing Management own?

Accepted Answer

As of its Q2 2026 13F, Vanguard Personalized Indexing Management holds 434,448 shares of UMC (United Microelectronics).

Question 3

What is Vanguard Personalized Indexing Management's UMC position worth?

Accepted Answer

As of its Q2 2026 13F, Vanguard Personalized Indexing Management's UMC position is worth $11.8M.

Question 4

Is Vanguard Personalized Indexing Management buying or selling UMC?

Accepted Answer

In Q2 2026, Vanguard Personalized Indexing Management increased its UMC position by 16,128 shares (+3.9%).

Question 5

When did Vanguard Personalized Indexing Management first buy UMC?

Accepted Answer

Vanguard Personalized Indexing Management already held UMC in its Q1 2020 13F, the earliest on record, and has listed it in 26 quarterly 13F filings.

Quarter	Action	Shares	Change	Value	Weight	Price	Conviction
2026-Q2 Latest	Increased	434,448	+3.9%	$11.8M	0.1%	$26.74	29
2026-Q1	Increased	418,320	+1.4%	$3.8M	0.0%	$8.82	27
2025-Q4	Increased	412,380	+23.7%	$3.2M	0.0%	$7.72	32
2025-Q3	Decreased	333,351	-8.8%	$2.5M	0.0%	$7.45	0
2025-Q2	Increased	365,708	+31.8%	$2.8M	0.0%	$7.52	33
2025-Q1	Increased	277,471	+17.7%	$2M	0.0%	$6.61	30
2024-Q4	Decreased	235,678	-21.0%	$1.5M	0.0%	$6.00	0
2024-Q3	Decreased	298,196	-1.1%	$2.5M	0.0%	$7.78	0