PRIMECAP MANAGEMENT CO/CA/PRIMECAP MANAGEMENT CO/CA/

Institutional investor · Portfolio as of Q4 2025

Top Holdings319 positions

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Activity:

Eli Lilly and Company

9.3M$10B7.5%$104.89+919.66%
29 qtrssince 2018-Q4
Decreased
0

MICRON TECHNOLOGY INC

24.8M$7.1B5.4%$31.61+802.35%
29 qtrssince 2018-Q4
Decreased
0

Alphabet Inc.

15.1M$4.7B3.6%$54.70+471.13%
29 qtrssince 2018-Q4
Decreased
0

Microsoft Corporation

7.3M$3.5B2.7%$95.67+402.32%
29 qtrssince 2018-Q4
Decreased
0

KLA Corporation

2.9M$3.5B2.6%$8.13+1389.79%
29 qtrssince 2018-Q4
Decreased
0
AZNAZN
ADR

ASTRAZENECA PLC

36.9M$3.4B2.6%$65.06+203.15%
29 qtrssince 2018-Q4
Decreased
0

NVIDIA Corporation

17.2M$3.2B2.4%$3.30+5534.90%
29 qtrssince 2018-Q4
Decreased
0

Boston Scientific Corporation

31.1M$3B2.2%$36.11+164.09%
29 qtrssince 2018-Q4
Decreased
0

Amgen Inc.

8.9M$2.9B2.2%$154.34+107.82%
29 qtrssince 2018-Q4
Decreased
0

Tesla, Inc.

6.3M$2.8B2.2%$19.31+2228.75%
29 qtrssince 2018-Q4
Decreased
0

Amazon.com, Inc.

12.3M$2.8B2.1%$172.72+33.64%
29 qtrssince 2018-Q4
Increased
62

Intel Corporation

76.1M$2.8B2.1%$37.79-2.36%
29 qtrssince 2018-Q4
Decreased
0
BABABABA
ADR

ALIBABA GROUP HLDG LTD

19M$2.8B2.1%$128.41+13.11%
29 qtrssince 2018-Q4
Decreased
0

BIOGEN INC

14.8M$2.6B2.0%$297.74-40.89%
29 qtrssince 2018-Q4
Decreased
0

FEDEX CORP

8.5M$2.5B1.9%$117.29+96.14%
29 qtrssince 2018-Q4
Decreased
0

Charles Schwab Corp

23.3M$2.3B1.8%$80.89+22.30%
29 qtrssince 2018-Q4
Increased
55

SOUTHWEST AIRLS CO

47.4M$2B1.5%$41.37-1.42%
29 qtrssince 2018-Q4
Decreased
0

Alphabet Inc.

5.8M$1.8B1.4%$51.29+510.56%
29 qtrssince 2018-Q4
Decreased
0

UNITED AIRLS HLDGS INC

16M$1.8B1.4%$83.16+34.46%
29 qtrssince 2018-Q4
Decreased
0

Texas Instruments Incorporated

10.1M$1.7B1.3%$76.19+123.95%
29 qtrssince 2018-Q4
Decreased
0
$132.1B
AUM
319
Positions
Q4 2025
Filing
HI score · 3.5/5
Quarterly 13F Value Change
-2%Q3'24$136B-5%Q4'24$129.1B-6%Q1'25$121B+4%Q2'25$126.2B+3%Q3'25$130.6B+1%Q4'25$132.1B
Activity profile
$ moved · Q4'25
New1%Increased17%Decreased81%Exited1%
Composition
Equity vs derivatives
Equity100%Puts0%Calls0%
Holding period
Avg 5.1 years
<1Q3%1-4Q8%1-2Y7%2Y+82%

PRIMECAP MANAGEMENT CO/CA/ manages $132.1B across 319 positions as of Q4 2025. Top holdings: LLY (7.5%), MU (5.4%), GOOGL (3.6%). Fund DNA: Steady Compounder. HoldingsIntel Score: 3.5/5.0.

Q4 2025 Summary

Active quarter - 10 new positions, 18 exits, 60 increased. Top move: AMZN (INCREASED, conviction 62). Portfolio: $132.1B across 319 positions.

Top holdings by portfolio weight

Total AUM$132B
LLY7.54%
MU5.36%
GOOGL3.58%
MSFT2.67%
KLAC2.65%
AZN2.57%
NVDA2.43%
BSX2.24%
AMGN2.21%
TSLA2.15%
Other2.14%

Portfolio allocation by GICS sector

Sectors11
Technology30.30%
Healthcare26.35%
Industrials11.65%
Consumer Cyclical11.54%
Financial Services8.72%
Communication Services7.72%
Energy1.47%
Consumer Defensive1.28%
Basic Materials0.90%
Real Estate0.06%
Other0.01%

Behavioral investing profile

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Steady Compounder- primarily Technology, Healthcare, Industrials
Compare DNA across all funds
7-dimension, SEC 13F-derived research score
Strong(3.5 / 5.0)
Holdings P&L68
Conviction36
Concentration64
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Position Outcomes

Best and worst performing positions by estimated return

Cost basis estimates based on full filing history using quarter-end prices. Actual transaction prices are not disclosed in 13F filings.

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Accumulation Streaks

Positions with 2+ consecutive quarters of increases - persistent directional conviction.

Security
7Q
COPCOPConocoPhillips
Q4 2024 → Q2 2026+7.3M shares+$749.8M
7Q
SCHWSCHWCharles Schwab Corp
Q4 2024 → Q2 2026+24.1M shares+$2.3B
7Q
USFDUSFDUS FOODS HLDG CORP
Q4 2024 → Q2 2026+3.7M shares+$389.3M
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What the most-followed managers hold, and what they bought and sold each quarter.

Data sourced from SEC EDGAR 13F filings. Not financial advice. Full disclaimer

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