2303 Institutional Ownership

UNITED MICROELECTRONICS CORP

2303 institutional ownership at a glance

Follow UNITED MICROELECTRONICS CORP institutional ownership through recent Schedule 13G and 13D filings. Compare reported shares, ownership percentages, filing dates, and changes in beneficial ownership over time.

Latest filing: BlackRock filed Schedule 13G amendment on Apr 29, 2026, reporting 817.5M shares and 12.00% beneficial ownership.

Browse recent ownership filings How Schedule 13G works Why a 13G is not a trade report

How to read Schedule 13 ownership changes

Schedule 13G/13D reports beneficial ownership at an observation date. “Accumulation” or “reduction” is inferred from changes in reported shares when available; it is not a list of individual trades or exact execution prices.

Form 13F rows are quarter-end holding context only and do not establish an exact entry date.

For more context, see how to read a Schedule 13G, filing date vs event date, or Schedule 13G vs Schedule 13D.

Current ownership filings and reported ownership changes are available on free access. Investor and Pro add filing-specific significance scoring, disclosure-speed analysis, confirmation/divergence signals, and alerts. The overall institutional consensus preview remains public. Compare plans.

Cross-institution intelligence

Institutional Research

This gauge summarizes recent agreement across tracked institutional activity.

Latest filing Apr 29, 2026

Public consensus preview Accumulation leaning 64/100 institutional research score

1 tracked institution Latest filing Apr 29, 2026

1 accumulating across 1 comparable institution.

Accumulating1

Unchanged0

Reducing0

Exited0

The overall consensus is public. Detailed holder comparisons, breadth history, ownership charts, and filing-specific signal analysis remain part of Investor and Pro research.

Price context

52-week position is market context and does not change the institutional consensus score.

52-week range data is not available for this security yet.

Tracked institutions

Public holder names and filing freshness. Detailed institution-by-institution analysis is locked.

Latest observation Mar 31, 2026

BlackRock Apr 29, 2026 filed

BlackRock Feb 5, 2024 filed

Detailed institutional research

See what is driving the consensus.

Unlock holder-by-holder changes, ownership history, breadth by period, disclosure timing, and filing-specific signal analysis.

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Beneficial ownership filing history

Showing 2 of 2 filing(s)

Holder	Observed / filed	Reported change	Shares	Ownership	Observation	Filing	Latest
BlackRock CIK0002012383	Mar 31, 2026 observed Apr 29, 2026 filed · 29d Schedule 13G amendment	Earliest Schedule 13G amendment found	817.5M	12.00%
BlackRock CIK0001364742	Dec 31, 2023 observed Feb 5, 2024 filed · 36d Schedule 13G amendment	Earliest Schedule 13G amendment found	687.6M	5.50%

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