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

Institutional investor · Portfolio as of Q1 2026

SEC EDGAR SourceSEC Filings

Top Holdings320 positions

Activity:
Stock
Shares
Value
Weight
Avg Buy
Est. P&L
Held
Conviction

ELI LILLY & CO

9.2M$8.5B6.7%$103.84+1044.58%
30 qtrssince 2018-Q4
Decreased
0

MICRON TECHNOLOGY INC

21.9M$7.4B5.8%$31.49+3009.58%
30 qtrssince 2018-Q4
Decreased
0

ALPHABET INC

15M$4.3B3.4%$96.25+271.08%
30 qtrssince 2018-Q4
Decreased
0

ASTRAZENECA PLC

18.2M$3.6B2.8%$201.76-14.94%
1 qtr
New
83

KLA CORP

2.4M$3.6B2.8%$80.81+186.50%
30 qtrssince 2018-Q4
Decreased
0

INTEL CORP

75.8M$3.3B2.6%$37.69+191.46%
30 qtrssince 2018-Q4
Decreased
0

AMGEN INC

8.9M$3.1B2.5%$153.34+136.98%
30 qtrssince 2018-Q4
Decreased
0

NVIDIA CORPORATION

17.2M$3B2.4%$112.03+88.30%
30 qtrssince 2018-Q4
Decreased
0

FEDEX CORP

8.3M$3B2.3%$145.69+116.00%
30 qtrssince 2018-Q4
Decreased
0

BIOGEN INC

14.8M$2.7B2.1%$291.55-31.69%
30 qtrssince 2018-Q4
Decreased
0

MICROSOFT CORP

7.3M$2.7B2.1%$95.17+304.64%
30 qtrssince 2018-Q4
Decreased
0

AMAZON COM INC

12.1M$2.5B2.0%$182.64+34.33%
30 qtrssince 2018-Q4
Decreased
0
BABABABA
ADR

ALIBABA GROUP HLDG LTD

18.7M$2.3B1.8%$131.09-14.31%
30 qtrssince 2018-Q4
Decreased
0

TESLA INC

6.1M$2.3B1.8%$214.88+89.76%
30 qtrssince 2018-Q4
Decreased
0

SCHWAB CHARLES CORP

23.4M$2.2B1.7%$81.21+26.98%
30 qtrssince 2018-Q4
Increased
50

BOSTON SCIENTIFIC CORP

32.5M$2B1.6%$37.18+20.42%
30 qtrssince 2018-Q4
Increased
53

ROSS STORES INC

9.2M$2B1.6%$78.90+182.47%
30 qtrssince 2018-Q4
Decreased
0

TEXAS INSTRS INC

9.7M$1.9B1.5%$76.40+307.67%
30 qtrssince 2018-Q4
Decreased
0

SOUTHWEST AIRLS CO

47.1M$1.8B1.4%$42.18+14.82%
30 qtrssince 2018-Q4
Decreased
0
25.4M$1.7B1.3%$6.06+2175.14%
30 qtrssince 2018-Q4
Decreased
0
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$127B
AUM
320
Positions
Q1 2026
Filing
Rating · 3.0
Quarterly Portfolio Change
-5%Q4'24$129.1B-6%Q1'25$121B+4%Q2'25$126.2B+3%Q3'25$130.6B+1%Q4'25$132.1B-4%Q1'26$127B
Activity profile
$ moved · Q1'26
New15%Increased18%Decreased54%Exited14%
Composition
Equity vs derivatives
Equity100%Puts0%Calls0%
Holding period
Avg 5.3 years
<1Q2%1-4Q6%1-2Y9%2Y+83%

PRIMECAP MANAGEMENT CO/CA/ manages $127B across 320 positions as of Q1 2026. Top holdings: LLY (6.7%), MU (5.8%), GOOGL (3.4%). Fund DNA: Steady Compounder. HoldingsIntel Rating: 3/5.0.

Q1 2026 Summary

Active quarter - 9 new positions, 8 exits, 75 increased. Top move: AZN (NEW, conviction 83). Portfolio: $127.0B across 320 positions.

Top holdings by portfolio weight

Total AUM$127B
LLY6.68%
MU5.82%
GOOGL3.39%
AZN2.83%
KLAC2.83%
INTC2.63%
AMGN2.46%
NVDA2.36%
FDX2.33%
BIIB2.13%
Other2.12%

Portfolio allocation by GICS sector

Sectors11
Technology31.12%
Healthcare25.64%
Industrials12.04%
Consumer Cyclical10.85%
Financial Services8.41%
Communication Services7.24%
Energy2.11%
Consumer Defensive1.33%
Basic Materials1.15%
Real Estate0.09%
Other0.01%

Behavioral investing profile

7-dimension quality assessment
Solid(3.0 / 5.0)
Track Record67
Conviction35
Concentration50
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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.

Similar Funds

Funds with similar investing DNA

Accumulation Streaks

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

Security
7Q
COPCOPCONOCOPHILLIPS
Q3 2024 Q1 2026+8.7M shares+$1.2B
7Q
USFDUSFDUS FOODS HLDG CORP
Q3 2024 Q1 2026+3.8M shares+$357.7M
6Q
GFFGFFGRIFFON CORP
Q4 2024 Q1 2026+182,997 shares+$13.9M

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

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