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§ 13F · FUND PROFILE

PRIMECAP MANAGEMENT CO/CA/.

Concentrated growth, low turnover
AUM · $126189.1T (13F)Positions · 333Turnover · 91% · Q4Filed · Feb 11, 2026
BIG MOVE · Q4
Technology cut 2pp. Pharmaceuticals lifted 2pp.
CONCENTRATION
33%
Top 10 holdings
NEW BUYS
+10
+$204.9T deployed
EXITS
0
No exits
SECTOR SHIFT
TECHNOLOGY → PHARMACEUTICALS
-2pp · +2pp
3YR HIT RATE
Top-5 overlap
§ 01 · TOP HOLDINGS

The book · Q4 2025

FILED FEB 11, 2026
#TickerNameShares$ value% portΔ Q4
1LLYELI LILLY & CO9.27M$9957.8T7.5%−14%
2MUMICRON TECHNOLOGY INC24.79M$7076.7T5.4%−16%
3GOOGLALPHABET INC15.13M$4735.2T3.6%−4%
4MSFTMICROSOFT CORP7.29M$3524.4T2.7%−13%
5KLACKLA CORP2.88M$3494.5T2.6%−19%
6AZNASTRAZENECA PLC36.92M$3393.6T2.6%−7%
7NVDANVIDIA CORPORATION17.23M$3212.9T2.4%−8%
8BSXBOSTON SCIENTIFIC CORP31.10M$2965.0T2.2%−6%
9AMGNAMGEN INC8.90M$2914.7T2.2%−8%
10TSLATESLA INC6.32M$2841.1T2.2%−5%
§ 02 · SECTOR ALLOCATION

Where the money is

Other44.6% (1pp)
Semiconductors16.7% (+1pp)
Pharmaceuticals13.7% (+2pp)
Technology9.0% (2pp)
Retail8.3% (±0)
Media7.6% (+1pp)
§ 03 · THE PRIMECAP SIGNAL

AC read

PRIMECAP MANAGEMENT CO/CA/ is a Quality / Compounder fund managing $126189120.7 trillion in assets. The fund runs a broad portfolio of 333 positions, broad diversification across holdings, with the top 10 accounting for 33%. Trading activity is aggressive at 91% quarterly turnover, with 10 new positions and 0 exits last quarter. Top sector allocations: Other (45%), Semiconductors (17%), Pharmaceuticals (14%).

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§ 04 · FILING HISTORY

Q-by-Q deltas

1 FILINGS
Q4 2025
Busy quarter
+10 buys · 0 exits · 281 changed
Q3 2025
Steady book
+0 buys · 0 exits · 0 changed
Q2 2025
Steady book
+0 buys · 0 exits · 0 changed
Q1 2025
Steady book
+0 buys · 0 exits · 0 changed