Login
Super Investors / PRIMECAP MANAGEMENT CO/CA/
PM

PRIMECAP MANAGEMENT CO/CA/

Quarterly 13F snapshot: US-listed longs only, no performance figures — 13F data cannot support them.

Portfolio value
$169B
Positions
324
Quarter ended
June 30, 2026
Filed
August 14, 2026

Reported portfolio value by quarter (53 quarters reported)

$169B $69.9B
Q2 13 Q1 16 Q4 18 Q3 21 Q2 24 Q2 26

$69.9B in Q2 2013 → $169B now. Hover for any quarter.

Holdings

As reported for the quarter ended June 30, 2026. Activity is the change in share count since the prior quarter's filing.

Holding % of portfolio Activity Shares Value
Micron Technology Inc 13.1% Trimmed 12% 19,217,236 $22.2B
Eli Lilly & Co 6.5% Trimmed 0.5% 9,172,904 $11B
Intel Corp 6.2% Trimmed 0.7% 75,250,958 $10.5B
Kla Corp 3.7% Added 742% 20,536,730 $6.2B
Alphabet Inc 3.1% Trimmed 0.9% 14,859,769 $5.31B
Flex Ltd 2.2% Trimmed 8.0% 23,358,875 $3.79B
Astrazeneca PLC 2.0% Trimmed 0.7% 18,095,178 $3.43B
Nvidia Corporation 2.0% Trimmed 0.6% 17,079,180 $3.42B
Biogen Inc 1.9% Added 2.7% 15,154,606 $3.27B
Amazon Com Inc 1.7% Trimmed 1.2% 11,962,188 $2.85B
Microsoft Corp 1.6% Trimmed 1.7% 7,140,870 $2.66B
Tesla Inc 1.5% Trimmed 0.4% 6,103,030 $2.57B
Fedex Corp 1.5% Trimmed 1.8% 8,156,799 $2.55B
TI Texas Instrs Inc 1.5% Trimmed 12% 8,514,989 $2.54B
SA Southwest Airls Co 1.5% Added 3.7% 48,797,725 $2.51B
Amgen Inc 1.4% Trimmed 24% 6,756,962 $2.45B
Schwab Charles Corp 1.4% Added 7.2% 25,120,895 $2.32B
UA United Airls Hldgs Inc 1.3% Added 4.5% 16,461,630 $2.24B
Boston Scientific Corp 1.3% Added 55% 50,520,914 $2.16B
Ross Stores Inc 1.1% Trimmed 0.7% 9,104,980 $1.94B
Alphabet Inc 1.1% Trimmed 5.6% 5,399,060 $1.91B
AG Alibaba Group Hldg Ltd 1.1% Trimmed 0.6% 18,611,306 $1.79B
Delta Air Lines Inc 1.0% Trimmed 0.2% 17,521,167 $1.64B
Visa Inc 0.9% Added 5.1% 4,268,491 $1.46B
Bristol-myers Squibb Co 0.8% Trimmed 0.2% 24,923,900 $1.44B
TC Tjx Cos Inc New 0.8% Trimmed 1.2% 9,476,020 $1.44B
BM Beone Medicines Ltd 0.8% Added 0.7% 5,007,931 $1.43B
RJ Raymond James Finl Inc 0.8% Trimmed 1.1% 9,242,552 $1.41B
Netapp Inc 0.8% Trimmed 0.5% 9,016,690 $1.4B
Gsk PLC 0.8% Trimmed 0.1% 25,182,068 $1.32B
American Airlines Group Inc 0.8% Added 44% 70,732,954 $1.28B
Baidu Inc 0.7% Trimmed 0.4% 11,010,100 $1.26B
Analog Devices Inc 0.7% Trimmed 0.2% 3,128,329 $1.24B
Jabil Inc 0.7% Trimmed 3.5% 3,167,120 $1.22B
Conocophillips 0.7% Added 0.1% 11,588,365 $1.2B
Sony Group Corp 0.7% Added 1.8% 59,603,230 $1.2B
Elanco Animal Health Inc 0.7% Trimmed 0.9% 45,445,012 $1.12B
Jpmorgan Chase & Co 0.7% Trimmed 0.6% 3,382,627 $1.11B
Adobe Inc 0.6% Added 10% 5,227,139 $1.07B
NT Northern Tr Corp 0.6% Trimmed 6.8% 6,100,742 $1.06B
C Corning Inc 0.6% Trimmed 0.1% 4,131,872 $1.06B
Novartis Ag 0.6% Trimmed 13% 6,592,124 $1.03B
Thermo Fisher Scientific Inc 0.6% Trimmed 0.0% 1,982,271 $994M
Caterpillar Inc 0.5% Trimmed 0.1% 871,700 $928M
Marvell Technology Inc 0.5% Trimmed 7.3% 2,757,995 $822M
Biomarin Pharmaceutical Inc 0.5% Trimmed 0.0% 14,190,183 $812M
Nextpower Inc 0.5% Trimmed 1.1% 6,688,767 $797M
Oracle Corp 0.5% Trimmed 5.1% 5,386,230 $789M
HP Hewlett Packard Enterprise C 0.5% Trimmed 0.5% 17,140,875 $773M
AM Applied Matls Inc 0.4% Trimmed 11% 1,042,926 $754M
I Idex Corp 0.4% Trimmed 0.1% 3,300,072 $749M
AH Asml Hldg Nv 0.4% Trimmed 0.4% 351,576 $699M
DW Disney Walt Co 0.4% Added 13% 7,020,957 $676M
RC Royal Caribbean Group 0.4% Trimmed 10% 2,109,421 $670M
Xometry Inc 0.4% Added 2.2% 6,636,057 $641M
Illumina Inc 0.4% Added 70% 3,514,649 $618M
Aecom 0.4% Added 1.6% 8,787,043 $613M
FF Fedex Fght Hldg Co Inc 0.4% New 4,048,660 $611M
Advanced Micro Devices Inc 0.4% Trimmed 0.2% 1,047,730 $609M
Jacobs Solutions Inc 0.3% Added 1.1% 4,565,799 $575M

Showing top 60 of 324 positions.

Timeline of changes

What changed each quarter, from the filings' own share counts. Largest moves first; most recent 8 quarters.

Q2 2026

quarter ended June 30, 2026 · filed August 14, 2026

Company Action Shares changed Value of change % of portfolio
Kla Corp Added +18,099,083 +$5.46B 3.7%
Micron Technology Inc Trimmed −2,656,968 −$3.07B 13.1%
Boston Scientific Corp Added +17,991,140 +$768M 1.3%
Amgen Inc Trimmed −2,117,167 −$767M 1.4%
FF Fedex Fght Hldg Co Inc New +4,048,660 +$611M 0.4%
American Airlines Group Inc Added +21,743,000 +$393M 0.8%
TI Texas Instrs Inc Trimmed −1,139,777 −$340M 1.5%
Flex Ltd Trimmed −2,024,573 −$328M 2.2%
Illumina Inc Added +1,447,350 +$254M 0.4%
SE Space Exploration Techn Corp New +1,407,762 +$241M 0.1%

Showing the 10 largest of 283 changes.

Q1 2026

quarter ended March 31, 2026 · filed May 11, 2026

Company Action Shares changed Value of change % of portfolio
Astrazeneca PLC New +18,213,708 +$3.59B 2.8%
Astrazeneca PLC Exited −36,915,261 −$3.39B
Micron Technology Inc Trimmed −2,920,732 −$987M 5.8%
Kla Corp Trimmed −438,315 −$645M 2.8%
Adobe Inc Added +1,054,640 +$256M 0.9%
Q Qualcomm Inc Trimmed −1,632,497 −$210M 0.1%
Boeing Co Added +786,810 +$157M 0.1%
Gitlab Inc Added +6,139,789 +$133M 0.1%
TL Telefonaktiebolaget Lm Erics Added +10,874,714 +$123M 0.3%
Boston Scientific Corp Added +1,433,590 +$90M 1.6%

Showing the 10 largest of 271 changes.

Q4 2025

quarter ended December 31, 2025 · filed February 11, 2026

Company Action Shares changed Value of change % of portfolio
Eli Lilly & Co Trimmed −1,529,556 −$1.64B 7.5%
Micron Technology Inc Trimmed −4,860,499 −$1.39B 5.4%
Kla Corp Trimmed −659,220 −$801M 2.6%
CN Chevron Corp New Trimmed −4,037,474 −$615M 0.3%
WF Wells Fargo Co New Trimmed −6,566,583 −$612M 0.6%
Microsoft Corp Trimmed −1,101,785 −$533M 2.7%
Netflix Inc Added +3,826,870 +$359M 0.3%
Amazon Com Inc Added +1,542,950 +$356M 2.1%
Teradyne Inc Trimmed −1,834,698 −$355M 0.1%
Synopsys Inc Added +647,700 +$304M 0.3%

Showing the 10 largest of 309 changes.

Q3 2025

quarter ended September 30, 2025 · filed November 12, 2025

Company Action Shares changed Value of change % of portfolio
Hess Corp Exited −7,652,265 −$1.06B
Eli Lilly & Co Trimmed −1,359,570 −$1.04B 6.3%
Oracle Corp Trimmed −3,646,474 −$1.03B 1.6%
Kla Corp Trimmed −945,095 −$1.02B 2.9%
CN Chevron Corp New New +6,362,826 +$988M 0.8%
Amazon Com Inc Added +3,172,900 +$697M 1.8%
Alphabet Inc Trimmed −2,349,411 −$572M 1.1%
Exxon Mobil Corp Trimmed −3,616,965 −$408M 0.1%
Jpmorgan Chase & Co. Trimmed −1,207,060 −$381M 0.9%
Microsoft Corp Trimmed −725,960 −$376M 3.3%

Showing the 10 largest of 312 changes.

Q2 2025

quarter ended June 30, 2025 · filed August 11, 2025

Company Action Shares changed Value of change % of portfolio
Eli Lilly & Co Trimmed −2,624,862 −$2.05B 7.5%
Micron Technology Inc Trimmed −5,814,892 −$717M 3.1%
Sony Group Corp Trimmed −23,218,035 −$604M 1.5%
Amgen Inc Trimmed −1,756,586 −$490M 2.4%
Adobe Inc Trimmed −1,264,055 −$489M 1.3%
Schwab Charles Corp Added +5,032,728 +$459M 1.4%
Amazon Com Inc Added +2,026,408 +$445M 1.3%
Alphabet Inc Trimmed −2,419,288 −$429M 1.2%
Fedex Corp Trimmed −1,840,460 −$418M 1.8%
Kla Corp Trimmed −396,732 −$355M 3.2%

Showing the 10 largest of 327 changes.

Q1 2025

quarter ended March 31, 2025 · filed May 09, 2025

Company Action Shares changed Value of change % of portfolio
Eli Lilly & Co Trimmed −1,976,884 −$1.63B 10.1%
Schwab Charles Corp Added +9,749,728 +$763M 0.9%
WF Wells Fargo Co New Trimmed −3,636,535 −$261M 1.3%
RJ Raymond James Finl Inc Trimmed −1,750,467 −$243M 1.1%
FE Flutter Entmt PLC New +952,109 +$211M 0.2%
Kla Corp Trimmed −307,560 −$209M 2.7%
Sony Group Corp Trimmed −8,036,380 −$204M 2.0%
Oracle Corp Trimmed −1,379,180 −$193M 1.2%
Amgen Inc Trimmed −613,830 −$191M 3.2%
AG Alibaba Group Hldg Ltd Trimmed −1,331,410 −$176M 2.3%

Showing the 10 largest of 316 changes.

Q4 2024

quarter ended December 31, 2024 · filed February 10, 2025

Company Action Shares changed Value of change % of portfolio
Sony Group Corp Added +80,724,932 +$1.71B 1.7%
Eli Lilly & Co Trimmed −933,854 −$721M 10.0%
Tesla Inc Trimmed −1,162,950 −$470M 2.4%
WF Wells Fargo Co New Trimmed −6,476,780 −$455M 1.4%
Gsk PLC Added +10,407,905 +$352M 0.7%
Amgen Inc Trimmed −1,253,816 −$327M 2.6%
Alphabet Inc Trimmed −1,683,955 −$319M 2.5%
Amazon Com Inc Added +1,089,100 +$239M 0.9%
Schwab Charles Corp Added +3,216,000 +$238M 0.2%
Alphabet Inc Trimmed −1,012,955 −$193M 1.7%

Showing the 10 largest of 317 changes.

Q3 2024

quarter ended September 30, 2024 · filed November 08, 2024

Company Action Shares changed Value of change % of portfolio
Eli Lilly & Co Trimmed −1,927,574 −$1.71B 11.5%
WF Wells Fargo Co New Trimmed −5,186,907 −$293M 1.3%
Amentum Holdings Inc New +5,271,282 +$170M 0.1%
Exxon Mobil Corp Trimmed −1,430,125 −$168M 0.6%
Kla Corp Trimmed −214,170 −$166M 3.0%
Conocophillips Added +1,418,900 +$149M 0.3%
Broadcom Inc Added +855,207 +$148M 0.1%
TI Texas Instrs Inc Trimmed −438,144 −$90.5M 2.3%
Microsoft Corp Trimmed −196,565 −$84.6M 3.1%
PH Paypal Hldgs Inc Added +1,069,356 +$83.4M 0.3%

Showing the 10 largest of 283 changes.

Create Account

Sign up for free to unlock this feature.

Already have an account? Sign in

Premium Feature

This feature requires a premium subscription to unlock unlimited historical data and advanced analysis tools.

Premium includes:

  • Unlimited historical financial data
  • Advanced analytics and insights
  • Priority support