SEC 13F Intelligence

Primecap Management Co/Ca/ / MU

Primecap Management Co/Ca/’s Micron Technology Inc Position

Does Primecap Management Co/Ca/ own Micron Technology Inc (MU)? Yes — 21.87M shares worth $7.4B (+5.82% of its 13F portfolio) as of Q1 2026, down from 24.79M shares the prior filed quarter.

Position Value
$7.4B
Q1 2026
Shares
21.87M
% of Portfolio
+5.82%
Quarters Held
30
currently held

Position History MU

Reported value by quarter
Q4 ’18: $1.8BQ4 ’18Q1 ’19: $2.4BQ2 ’19: $2.2BQ3 ’19: $2.4BQ4 ’19: $3.0BQ4 ’19Q1 ’20: $2.2BQ2 ’20: $2.7BQ3 ’20: $2.4BQ4 ’20: $3.7BQ4 ’20Q1 ’21: $4.0BQ2 ’21: $3.7BQ3 ’21: $3.1BQ4 ’21: $3.8BQ4 ’21Q1 ’22: $3.2BQ2 ’22: $2.2BQ3 ’22: $2.0BQ4 ’22: $2.0BQ4 ’22Q1 ’23: $2.4BQ2 ’23: $2.4BQ3 ’23: $2.6BQ4 ’23: $3.2BQ4 ’23Q1 ’24: $4.4BQ2 ’24: $4.9BQ3 ’24: $3.9BQ4 ’24: $3.2BQ4 ’24Q1 ’25: $3.2BQ2 ’25: $3.9BQ3 ’25: $5.0BQ4 ’25: $7.1BQ4 ’25Q1 ’26: $7.4Bfilingsflow.com
QuarterSharesValue% of Portfolio
Q1 202621.87M$7.4B+5.82%
Q4 202524.79M$7.1B+5.36%
Q3 202529.66M$5.0B+3.80%
Q2 202531.47M$3.9B+3.07%
Q1 202537.28M$3.2B+2.68%
Q4 202437.60M$3.2B+2.45%
Q3 202437.63M$3.9B+2.87%
Q2 202437.43M$4.9B+3.56%
Q1 202437.61M$4.4B+3.31%
Q4 202337.49M$3.2B+2.53%
Q3 202337.64M$2.6B+2.16%
Q2 202338.01M$2.4B+2.00%
Q1 202338.95M$2.4B+2.05%
Q4 202239.74M$2.0B+1.82%
Q3 202240.43M$2.0B+1.96%
Q2 202240.42M$2.2B+2.00%
Q1 202240.83M$3.2B+2.40%
Q4 202141.21M$3.8B+2.66%
Q3 202143.35M$3.1B+2.17%
Q2 202143.65M$3.7B+2.49%
Q1 202145.43M$4.0B+2.79%
Q4 202048.55M$3.7B+2.71%
Q3 202050.41M$2.4B+1.95%
Q2 202051.46M$2.7B+2.28%
Q1 202053.47M$2.2B+2.21%
Q4 201955.88M$3.0B+2.18%
Q3 201956.62M$2.4B+1.94%
Q2 201957.74M$2.2B+1.65%
Q1 201957.80M$2.4B+1.76%
Q4 201857.86M$1.8B+1.49%

Common-stock position only; options are excluded. Quarters where the fund filed no 13F or reported no position are absent. See Primecap Management Co/Ca/’s full portfolio or all institutional holders of MU.