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UMC · MU in the 13F filings

Two to four stocks side by side among the 95 tracked managers: who lists them, how that has moved, who bought and sold in a quarter, and which managers hold more than one.

UMCMU
Quarter
Q2 2026Q1 2026Q4 2025Q3 2025Q2 2025Q1 2025Q4 2024Q3 2024Q2 2024Q1 2024Q4 2023

Holders over time

Tracked managers listing each stock every quarter, at least, or their combined reported value. A gap is a quarter in which no tracked manager listed it. Click a quarter to compare there.
  • UMC
  • MU
0204060202120222023202420252026
Holders and value by quarter
QuarterUMCMU
Q3 20202 holders, $126m34 holders, $8.6bn
Q4 20202 holders, $202m43 holders, $13.3bn
Q1 20212 holders, $181m38 holders, $13.5bn
Q2 20213 holders, $123m38 holders, $11.4bn
Q3 20214 holders, $201m28 holders, $8.6bn
Q4 20214 holders, $154m34 holders, $12.8bn
Q1 20223 holders, $87m32 holders, $10.8bn
Q2 20224 holders, $111m31 holders, $7.8bn
Q3 20224 holders, $112m36 holders, $7.1bn
Q4 20225 holders, $172m26 holders, $8.0bn
Q1 20236 holders, $192m28 holders, $10.0bn
Q2 20234 holders, $160m34 holders, $10.8bn
Q3 20233 holders, $70m33 holders, $11.6bn
Q4 20231 holders, $54m35 holders, $14.4bn
Q1 20241 holders, $35m45 holders, $19.9bn
Q2 20243 holders, $85m43 holders, $20.8bn
Q3 20245 holders, $217m39 holders, $12.9bn
Q4 20243 holders, $124m28 holders, $12.2bn
Q1 20251 holders, $2.1m28 holders, $13.8bn
Q2 2025none listed holders, n.a.32 holders, $22.0bn
Q3 20251 holders, $12m36 holders, $29.9bn
Q4 20254 holders, $127m41 holders, $54.0bn
Q1 20264 holders, $343m45 holders, $56.5bn
Q2 20266 holders, $715m50 holders, $164bn
UMC

United Microelectronics Corp

Holders
1
Reported value
$35m
Buyers
0
Sellers
1

Breadth -1 among 93 comparable managers.

SemiconductorsAI infrastructure and semiconductors · L3VLUPSemiconductors
MU

Micron Technology Inc

Holders
45
Reported value
$19.9bn
Buyers
23
Sellers
20

Breadth +3 among 93 comparable managers.

SemiconductorsAI infrastructure and semiconductors · L3VLUPSemiconductors

Who holds both, Q1 2024

Among the 45 tracked managers listing any of them. "Only" is about listed positions: a manager may hold the other below its listed range.

Only UMC (0)

None.

Only MU (44)

Acadian Asset Management LLC, AllianceBernstein LP, Appaloosa LP, Artisan Partners LP, Brevan Howard Capital Management LP, Capital Research Global Investors, Capital World Investors, Caxton Associates LLP, Citadel Advisors LLC, D. E. Shaw & Co., Eisler Capital Management Ltd, Element Capital Management LLC, Fidelity (FMR LLC), Holocene Advisors LP, Hudson Bay Capital Management LP, Invesco Ltd, Jane Street Group LLC, Janus Henderson Group Ltd, Man Group PLC, Marshall Wace LLP, Maverick Capital Ltd, MFS Investment Management, Millennium Management LLC, Moore Capital Management LP, Neuberger Berman Group LLC, and 19 more

How much of the picture this is

A 13F is a manager’s long US-listed equity book at a quarter end, filed up to 45 days later. Buyers and sellers count comparable managers (those that filed both quarters) by shares, so a rise in value with no rise in shares is the price. Large books are listed to their largest positions. These are 95 tracked managers, not the institutional market.

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