Question 1

How many shares of MU does PRIMECAP MANAGEMENT CO/CA/ own?

Accepted Answer

As of 2026-Q1, PRIMECAP MANAGEMENT CO/CA/ holds 21.9M shares of MU (MICRON TECHNOLOGY INC).

Question 2

What is PRIMECAP MANAGEMENT CO/CA/'s MU position worth?

Accepted Answer

As of 2026-Q1, PRIMECAP MANAGEMENT CO/CA/'s MU position is worth $7.4B.

Question 3

Is PRIMECAP MANAGEMENT CO/CA/ buying or selling MU?

Accepted Answer

In 2026-Q1, PRIMECAP MANAGEMENT CO/CA/ decreased their MU position (-11.8% change in shares).

Question 4

When did PRIMECAP MANAGEMENT CO/CA/ first buy MU?

Accepted Answer

Based on available 13F filings, PRIMECAP MANAGEMENT CO/CA/ first reported a position in MU in 2026-Q1. They have held the position across 30 quarters.