Largest positions
| Issuer | Class | Value | Share |
|---|---|---|---|
| Micron Technology Inc.COM | COM | $22,182,263,342 | 13.1% |
| Eli Lilly & COCOM | COM | $11,002,256,246 | 6.5% |
| Intel Corp.COM | COM | $10,507,291,264 | 6.2% |
| KLA Corp.COM NEW | COM NEW | $6,196,136,809 | 3.7% |
| Alphabet Inc.CAP STK CL A | CAP STK CL A | $5,310,435,649 | 3.1% |
| Flex LtdORD | ORD | $3,785,772,872 | 2.2% |
| Astrazeneca PLCORD | ORD | $3,431,207,652 | 2.0% |
| Nvidia CorporationCOM | COM | $3,417,373,127 | 2.0% |
| Biogen Inc.COM | COM | $3,274,304,389 | 1.9% |
| Amazon Com Inc.COM | COM | $2,851,067,887 | 1.7% |
| Microsoft Corp.COM | COM | $2,663,687,328 | 1.6% |
| Tesla Inc.COM | COM | $2,566,934,418 | 1.5% |
| Fedex Corp.COM | COM | $2,554,138,472 | 1.5% |
| Texas Instrs Inc.COM | COM | $2,538,062,771 | 1.5% |
| Southwest Airls COCOM | COM | $2,509,179,019 | 1.5% |
| Amgen Inc.COM | COM | $2,446,831,080 | 1.4% |
| Schwab Charles Corp.COM | COM | $2,317,904,983 | 1.4% |
| United Airls Hldgs Inc.COM | COM | $2,238,617,065 | 1.3% |
| Boston Scientific Corp.COM | COM | $2,156,232,608 | 1.3% |
| Ross Stores Inc.COM | COM | $1,937,994,996 | 1.1% |
| Alphabet Inc.CAP STK CL C | CAP STK CL C | $1,907,649,872 | 1.1% |
| Alibaba Group Hldg LtdSPONSORED ADS | SPONSORED ADS | $1,786,313,150 | 1.1% |
| Delta Air Lines Inc.COM NEW | COM NEW | $1,641,032,503 | 1.0% |
| Visa Inc.COM CL A | COM CL A | $1,464,476,578 | 0.9% |
| Bristol-myers Squibb COCOM | COM | $1,436,115,120 | 0.8% |
| TJX Cos Inc. NewCOM | COM | $1,435,617,030 | 0.8% |
| Beone Medicines LtdSPONSORED ADS | SPONSORED ADS | $1,427,110,097 | 0.8% |
| Raymond James Finl Inc.COM | COM | $1,405,145,182 | 0.8% |
| Netapp Inc.COM | COM | $1,395,422,945 | 0.8% |
| Gsk PLCSPONSORED ADR | SPONSORED ADR | $1,320,044,006 | 0.8% |
| American Airlines Group Inc.COM | COM | $1,278,144,480 | 0.8% |
| Baidu Inc.SPON ADR REP A | SPON ADR REP A | $1,258,344,329 | 0.7% |
| Analog Devices Inc.COM | COM | $1,242,478,827 | 0.7% |
| Jabil Inc.COM | COM | $1,220,861,418 | 0.7% |
| ConocophillipsCOM | COM | $1,204,726,426 | 0.7% |
| Sony Group Corp.SPONSORED ADR | SPONSORED ADR | $1,195,640,794 | 0.7% |
| Elanco Animal Health Inc.COM | COM | $1,118,401,745 | 0.7% |
| JPMORGAN Chase & COCOM | COM | $1,107,235,296 | 0.7% |
| Adobe Inc.COM | COM | $1,071,668,037 | 0.6% |
| Northern TR Corp.COM | COM | $1,060,552,989 | 0.6% |
| Corning Inc.COM | COM | $1,055,404,065 | 0.6% |
| Novartis AGSPONSORED ADR | SPONSORED ADR | $1,033,117,672 | 0.6% |
| Thermo Fisher Scientific Inc.COM | COM | $993,831,390 | 0.6% |
| Caterpillar Inc.COM | COM | $928,273,330 | 0.5% |
| Marvell Technology Inc.COM | COM | $821,579,131 | 0.5% |
| Biomarin Pharmaceutical Inc.COM | COM | $811,962,329 | 0.5% |
| Nextpower Inc.CLASS A COM | CLASS A COM | $796,899,701 | 0.5% |
| Oracle Corp.COM | COM | $789,352,009 | 0.5% |
| Hewlett Packard Enterprise CCOM | COM | $773,224,873 | 0.5% |
| Applied Matls Inc.COM | COM | $754,035,498 | 0.4% |
Micron Technology Inc.COM$22,182,263,342
- Class
- COM
- Share
- 13.1%
Eli Lilly & COCOM$11,002,256,246
- Class
- COM
- Share
- 6.5%
Intel Corp.COM$10,507,291,264
- Class
- COM
- Share
- 6.2%
KLA Corp.COM NEW$6,196,136,809
- Class
- COM NEW
- Share
- 3.7%
Alphabet Inc.CAP STK CL A$5,310,435,649
- Class
- CAP STK CL A
- Share
- 3.1%
Flex LtdORD$3,785,772,872
- Class
- ORD
- Share
- 2.2%
Astrazeneca PLCORD$3,431,207,652
- Class
- ORD
- Share
- 2.0%
Nvidia CorporationCOM$3,417,373,127
- Class
- COM
- Share
- 2.0%
Biogen Inc.COM$3,274,304,389
- Class
- COM
- Share
- 1.9%
Amazon Com Inc.COM$2,851,067,887
- Class
- COM
- Share
- 1.7%
Microsoft Corp.COM$2,663,687,328
- Class
- COM
- Share
- 1.6%
Tesla Inc.COM$2,566,934,418
- Class
- COM
- Share
- 1.5%
Fedex Corp.COM$2,554,138,472
- Class
- COM
- Share
- 1.5%
Texas Instrs Inc.COM$2,538,062,771
- Class
- COM
- Share
- 1.5%
Southwest Airls COCOM$2,509,179,019
- Class
- COM
- Share
- 1.5%
Amgen Inc.COM$2,446,831,080
- Class
- COM
- Share
- 1.4%
Schwab Charles Corp.COM$2,317,904,983
- Class
- COM
- Share
- 1.4%
United Airls Hldgs Inc.COM$2,238,617,065
- Class
- COM
- Share
- 1.3%
Boston Scientific Corp.COM$2,156,232,608
- Class
- COM
- Share
- 1.3%
Ross Stores Inc.COM$1,937,994,996
- Class
- COM
- Share
- 1.1%
Alphabet Inc.CAP STK CL C$1,907,649,872
- Class
- CAP STK CL C
- Share
- 1.1%
Alibaba Group Hldg LtdSPONSORED ADS$1,786,313,150
- Class
- SPONSORED ADS
- Share
- 1.1%
Delta Air Lines Inc.COM NEW$1,641,032,503
- Class
- COM NEW
- Share
- 1.0%
Visa Inc.COM CL A$1,464,476,578
- Class
- COM CL A
- Share
- 0.9%
Bristol-myers Squibb COCOM$1,436,115,120
- Class
- COM
- Share
- 0.8%
TJX Cos Inc. NewCOM$1,435,617,030
- Class
- COM
- Share
- 0.8%
Beone Medicines LtdSPONSORED ADS$1,427,110,097
- Class
- SPONSORED ADS
- Share
- 0.8%
Raymond James Finl Inc.COM$1,405,145,182
- Class
- COM
- Share
- 0.8%
Netapp Inc.COM$1,395,422,945
- Class
- COM
- Share
- 0.8%
Gsk PLCSPONSORED ADR$1,320,044,006
- Class
- SPONSORED ADR
- Share
- 0.8%
American Airlines Group Inc.COM$1,278,144,480
- Class
- COM
- Share
- 0.8%
Baidu Inc.SPON ADR REP A$1,258,344,329
- Class
- SPON ADR REP A
- Share
- 0.7%
Analog Devices Inc.COM$1,242,478,827
- Class
- COM
- Share
- 0.7%
Jabil Inc.COM$1,220,861,418
- Class
- COM
- Share
- 0.7%
ConocophillipsCOM$1,204,726,426
- Class
- COM
- Share
- 0.7%
Sony Group Corp.SPONSORED ADR$1,195,640,794
- Class
- SPONSORED ADR
- Share
- 0.7%
Elanco Animal Health Inc.COM$1,118,401,745
- Class
- COM
- Share
- 0.7%
JPMORGAN Chase & COCOM$1,107,235,296
- Class
- COM
- Share
- 0.7%
Adobe Inc.COM$1,071,668,037
- Class
- COM
- Share
- 0.6%
Northern TR Corp.COM$1,060,552,989
- Class
- COM
- Share
- 0.6%
Corning Inc.COM$1,055,404,065
- Class
- COM
- Share
- 0.6%
Novartis AGSPONSORED ADR$1,033,117,672
- Class
- SPONSORED ADR
- Share
- 0.6%
Thermo Fisher Scientific Inc.COM$993,831,390
- Class
- COM
- Share
- 0.6%
Caterpillar Inc.COM$928,273,330
- Class
- COM
- Share
- 0.5%
Marvell Technology Inc.COM$821,579,131
- Class
- COM
- Share
- 0.5%
Biomarin Pharmaceutical Inc.COM$811,962,329
- Class
- COM
- Share
- 0.5%
Nextpower Inc.CLASS A COM$796,899,701
- Class
- CLASS A COM
- Share
- 0.5%
Oracle Corp.COM$789,352,009
- Class
- COM
- Share
- 0.5%
Hewlett Packard Enterprise CCOM$773,224,873
- Class
- COM
- Share
- 0.5%
Applied Matls Inc.COM$754,035,498
- Class
- COM
- Share
- 0.4%
The share class is shown on a wider screen.
The 50 largest of 324 positions by value, with holdings of the same security combined. The 200 largest are in this firm's machine-readable record. Share counts and quarter-on-quarter changes for each position are on EDGAR. View the full information table on EDGAR
This filing
- Form
- 13F-HR
- CIK
- 763212
- File number
- 028-01469
- Options
- 0 call, 0 put
- In the 25 largest
- 61.6%
- Prior quarter
- $127,010,591,624 at 31 March 2026
- Positions opened
- 13
- Positions closed
- 9
Common questions
What are Primecap Management’s 13F holdings worth?
$169,112,441,771 across 324 positions for the quarter ended 30 June 2026.
What is Primecap Management’s largest 13F holding?
MICRON TECHNOLOGY INC (COM) was the largest position at $22,182,263,342, or 13.1% of reported 13F value, as of 30 June 2026.
How concentrated is Primecap Management’s 13F portfolio?
The ten largest positions accounted for 42.6% of reported value and the twenty-five largest for 61.6%, across 324 positions as of 30 June 2026.
Does Form 13F show everything Primecap Management manages?
No. Form 13F covers only long positions in exchange-traded securities over which the manager has investment discretion, valued at quarter end. It excludes cash, most bonds, private funds, and any assets the firm does not have discretion over, so it is neither the firm's total assets nor any individual client's portfolio.
How often does Primecap Management file its 13F?
Every quarter. Managers file within 45 days of each quarter's end, so the figures are a snapshot that changes between filings. This page shows the quarter ended 30 June 2026.
Answered from this filing and the prior quarter's.