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PRIMECAP Management 13F portfolio summary

PRIMECAP Management of PRIMECAP MANAGEMENT CO/CA/ has 324 current stock holdings with a reported portfolio value of $169.11B. The portfolio 1 year return is +61.13%. Top holdings include MU (13.12%), LLY (6.51%), INTC (6.21%), KLAC (3.66%), GOOGL (3.14%).

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PRIMECAP Management 13F Portfolio

PRIMECAP MANAGEMENT CO/CA/
Latest SEC 13F filing: 2026-06-30

PRIMECAP Management runs PRIMECAP MANAGEMENT CO/CA/ and currently holds 324 stock positions, which is more than the average of 232 among the investors we track. The portfolio is valued at approximately $169.11B. Their top holdings are MU, LLY, INTC, KLAC, GOOGL. The top five represent 32.6% of reported portfolio weight. PRIMECAP Management ranks #215 out of 1000 investors tracked by Alpha Score. In the most recent quarter, PRIMECAP Management initiated 1 new position. They added to 35 existing positions. They trimmed 62 positions. Their current best-performing preview position is MXL with returns of +636.23%.

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Top 5 Holdings
MU13.1%
LLY6.5%
INTC6.2%
KLAC3.7%
GOOGL3.1%
Top 5: 32.6%
Portfolio Returns
1 Year
+61.13%
#126/1000
3 Year
+108.12%
#229/1000
5 Year
+103.34%
#262/1000

Portfolio Value

$169.11B

Alpha Score

89.6

#215 of 1000

Holdings

324

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PRIMECAP Management Current 13F Holdings

Reported holdings from PRIMECAP MANAGEMENT CO/CA/'s latest SEC 13F filing, ranked by portfolio weight.

324 stock holdings

HoldingWeightAvg BuyCurrentReturnQuarter Change
MU
MICRON TECHNOLOGY INC
13.12%$13.30$928.76+6,883.16%
Trimmed
-12.15%
LLY
ELI LILLY & CO
6.51%$55.03$1,281.52+2,228.77%
Trimmed
-0.55%
INTC
INTEL CORP
6.21%$35.84$93.74+161.55%
Trimmed
-0.67%
KLAC
KLA CORP
3.66%$6.04$153.66+2,444.04%
Added
+742.48%
GOOGL
ALPHABET INC
3.14%$42.01$320.58+663.10%
Trimmed
-0.85%
FLEX
FLEX LTD
2.24%$8.53$83.35+877.14%
Trimmed
-7.98%
AZN
ASTRAZENECA PLC
2.03%$197.22$170.02-13.79%
Trimmed
-0.65%
NVDA
NVIDIA CORPORATION
2.02%$0.35$217.94+62,168.57%
Trimmed
-0.63%
BIIB
BIOGEN INC
1.94%$98.61$252.73+156.29%
Added
+2.69%
AMZN
AMAZON COM INC
1.69%$157.75$253.10+60.44%
Trimmed
-1.20%

Showing 1-10 of 324