Data as of Q4 2025 (Dec 31, 2025)

PRIMECAP MANAGEMENT CO/CA/

โ€ขCIK: 763212โ€ขFiling: Q4 2025

PRIMECAP MANAGEMENT, led by the seasoned duo of Jonathan Lavine and Jonathan Ellis, is known for its concentrated, high-conviction investment strategy, currently managing $132.1 billion in assets across 319 positions. Recently, the fund has made notable moves by adding Q, BRKR, and VNOM, while exiting EA and GE, and significantly increasing stakes in CAVA and SNPS by 1336% and 703%, respectively.

Total AUM
$132.1B
QoQ Performance
+1.2%
Positions
318
Top 10 Concentration
33.8%
Latest Filing
Q4 2025

Top Holdings Allocation

LLY
MU
LLY7.5%
MU5.4%
GOOGL3.6%
MSFT2.7%
KLAC2.6%
AZN2.6%
NVDA2.4%
BSX2.2%

๐Ÿ“ˆ Biggest Buys

NFLX
NETFLIX INC
+1950.1%
0.3% of portfolio
AMZN
AMAZON COM INC
+14.4%
2.1% of portfolio
SNPS
SYNOPSYS INC
+743.6%
0.3% of portfolio
IEX
IDEX CORP
+86.5%
0.4% of portfolio
BAH
BOOZ ALLEN HAMILTON HLDG COR
+135.2%
0.3% of portfolio

๐Ÿ“‰ Biggest Sells

LLY
ELI LILLY & CO
-14.2%
7.5% of portfolio
MU
MICRON TECHNOLOGY INC
-16.4%
5.4% of portfolio
KLAC
KLA CORP
-18.6%
2.6% of portfolio
CHV
CHEVRON CORP NEW
-63.5%
0.3% of portfolio
WFC
WELLS FARGO CO NEW
-44.0%
0.6% of portfolio

Sector Breakdown

Other55.0%
Technology17.8%
Healthcare12.3%
Consumer5.0%
Financial4.9%
Industrial2.7%
Communication1.0%
Energy1.0%

๐Ÿšช Exited Positionssold since Q3 2025

CMA
COMERICA INC
SOLD
$179.9M
FCX
FREEPORT-MCMORAN INC
SOLD
$101.6M
BA
BOEING CO
SOLD
$84.5M
XOM
EXXON MOBIL CORP
SOLD
$84.4M
NWL
NEWELL BRANDS INC
SOLD
$73.5M
+123 more exited positions

Changes from Q3 2025

NEW1 new position
โ†‘42 increased
โ†“152 decreased

Historical Filings

Q4 2025Q3 2025Q2 2025Q1 2025Q4 2024Q3 2024Q2 2024Q1 2024Q4 2023