Primecap Management Co.
In its 13F for Q1 2024 (holdings as of March 31, 2024, filed May 14, 2024), Primecap Management Co. reported 335 stock positions worth $134.1 billion. Its top holding was Eli Lilly (LLY) at 12.3% of the portfolio, followed by Micron Technology (MU, 3.3%) and Microsoft (MSFT, 3.2%). Compared with Q4 2023, it opened 6 new positions, sold out of 5, added to 107 and reduced 170. The biggest buy was Micron Technology (MU, shares +0%) and the biggest sale an exit from Splunk (SPLK).
- Most Recent 13F
- Q2 2026
- Location
- PASADENA, CA
- CIK
- 0000763212
- Portfolio Value
- $134.1B (Q1 2024)
- SEC Filing
- 0001085146-24-002444 ↗ filed May 14, 2024
Holdings Value
Holdings 335 stocks · $134.1B
| LLY Eli Lilly & Co. | 12.33% | 21,254,190 | $16.5B | Reduce -4.3% |
| MU Micron Technology Inc. | 3.31% | 37,609,462 | $4.4B | Add +0.3% |
| MSFT Microsoft Corp. | 3.21% | 10,237,595 | $4.3B | Reduce -1.1% |
| AMGN Amgen Inc. | 3.10% | 14,601,958 | $4.2B | Add +0.1% |
| KLAC KLA Corp. | 3.01% | 5,784,869 | $4.0B | Reduce -1.8% |
| FDX FedEx Corp. | 2.79% | 12,889,655 | $3.7B | Reduce -0.1% |
| BIIB Biogen Inc. | 2.61% | 16,220,716 | $3.5B | Reduce -0.3% |
| INTC Intel Corp. | 2.51% | 76,125,037 | $3.4B | Add +1.2% |
| ADBE Adobe Inc. | 2.21% | 5,859,642 | $3.0B | Reduce -1.4% |
| AZN Astrazeneca PLC-Spons ADR | 2.17% | 42,945,175 | $2.9B | Reduce -0.1% |
| GOOGL Alphabet Inc. Class A | 2.16% | 19,146,550 | $2.9B | Reduce -0.3% |
| TXN Texas Instruments Inc. | 2.02% | 15,518,542 | $2.7B | Reduce -0.6% |
| BSX Boston Scientific Corp. | 1.94% | 37,947,665 | $2.6B | Add +0.1% |
| WFC Wells Fargo & Co. | 1.83% | 42,419,390 | $2.5B | Reduce -1.0% |
| NVDA Nvidia Corp. | 1.56% | 2,309,935 | $2.1B | Reduce -10.3% |
| GOOG Alphabet Inc. Class C | 1.44% | 12,675,480 | $1.9B | Reduce -0.5% |
| SONY Sony Group Corp. - SP ADR | 1.39% | 21,745,283 | $1.9B | Reduce -1.9% |
| ORCL Oracle Corp. | 1.23% | 13,083,701 | $1.6B | Reduce -0.4% |
| BMRN Biomarin Pharmaceutical Inc. | 1.22% | 18,713,895 | $1.6B | Add +1.6% |
| TMO Thermo Fisher Scientific Inc. | 1.20% | 2,757,557 | $1.6B | Reduce -8.2% |
| TSLA Tesla Inc. | 1.19% | 9,039,080 | $1.6B | Reduce -0.4% |
| ROST Ross Stores Inc. | 1.17% | 10,712,924 | $1.6B | Reduce -0.9% |
| RJF Raymond James Financial Inc. | 1.16% | 12,090,097 | $1.6B | Reduce -1.9% |
| NTAP Netapp Inc. | 1.14% | 14,504,964 | $1.5B | Reduce -1.4% |
| BABA Alibaba Group Holding-SP ADR | 1.12% | 20,796,812 | $1.5B | Add +14.1% |
| LUV Southwest Airlines Co. | 1.09% | 50,253,328 | $1.5B | Add +1.6% |
| TJX TJX Companies Inc. filed as TJX COS INC NEW | 0.98% | 13,020,748 | $1.3B | Reduce -3.5% |
| ACM Aecom | 0.98% | 13,426,219 | $1.3B | Reduce -4.2% |
| FLEX Flex Ltd. | 0.98% | 45,765,464 | $1.3B | Add +1.4% |
| BMY Bristol-Myers Squibb Co. | 0.94% | 23,273,407 | $1.3B | Reduce -1.1% |
| NVS Novartis AG-Sponsored ADR | 0.90% | 12,417,755 | $1.2B | Reduce -3.8% |
| HES Hess Corp. | 0.88% | 7,757,522 | $1.2B | Reduce -2.7% |
| PXD Pioneer Natural Resources Co. | 0.85% | 4,342,556 | $1.1B | Reduce -8.8% |
| UAL United Airlines Holdings Inc. | 0.85% | 23,701,089 | $1.1B | Add +1.5% |
| V Visa Inc. Class A | 0.84% | 4,058,451 | $1.1B | Add +0.3% |
| INTU Intuit Inc. | 0.82% | 1,701,621 | $1.1B | Reduce -2.0% |
| DAL Delta Air Lines Inc. | 0.81% | 22,567,823 | $1.1B | Add +1.7% |
| BIDU Baidu Inc. - Spon ADR | 0.80% | 10,194,129 | $1.1B | Add +9.8% |
| JPM JPMorgan Chase & Co. | 0.77% | 5,150,246 | $1.0B | Add +13.8% |
| J Jacobs Solutions Inc. | 0.68% | 5,946,252 | $914.1M | Reduce -2.5% |
| QCOM Qualcomm Inc. | 0.65% | 5,109,007 | $865.0M | Reduce -2.0% |
| ELAN Elanco Animal Health Inc. | 0.64% | 52,885,068 | $861.0M | Add +4.5% |
| DIS The Walt Disney Co. filed as DISNEY WALT CO | 0.60% | 6,524,341 | $798.3M | Add +4.0% |
| AMZN Amazon.com Inc. | 0.58% | 4,346,000 | $783.9M | Add +0.5% |
| MAT Mattel Inc. | 0.58% | 39,567,394 | $783.8M | Reduce -3.9% |
| ONC Beone Medicines Ltd.-ADR filed as BEIGENE LTD | 0.58% | 5,001,839 | $782.2M | Add +0.3% |
| ADI Analog Devices Inc. | 0.54% | 3,628,170 | $717.6M | Reduce -0.8% |
| RCL Royal Caribbean Cruises Ltd. | 0.52% | 5,001,265 | $695.2M | Reduce -16.7% |
| ZBH Zimmer Biomet Holdings Inc. | 0.50% | 5,062,950 | $668.2M | Reduce -0.5% |
| AAL American Airlines Group Inc. | 0.48% | 42,332,046 | $649.8M | Add +14.3% |
| HPQ HP Inc. | 0.48% | 21,131,365 | $638.6M | Add +1.6% |
| CAT Caterpillar Inc. | 0.47% | 1,730,972 | $634.3M | Reduce -4.1% |
| TDG Transdigm Group Inc. | 0.47% | 512,294 | $630.9M | Add +0.3% |
| AMAT Applied Materials Inc. | 0.46% | 3,009,083 | $620.6M | Reduce -7.0% |
| NTRS Northern Trust Corp. | 0.45% | 6,785,472 | $603.4M | Reduce -1.5% |
| MRSH Marsh & McLennan Cos | 0.44% | 2,881,611 | $593.6M | Reduce -0.8% |
| WHR Whirlpool Corp. | 0.43% | 4,773,676 | $571.1M | Add +0.9% |
| HPE Hewlett Packard Enterprise | 0.42% | 31,993,666 | $567.2M | Reduce -0.5% |
| ASML ASML Holding NV-NY Reg SHS | 0.42% | 576,071 | $559.1M | Reduce -0.5% |
| GSK GSK PLC-Spon ADR | 0.41% | 12,738,370 | $546.1M | Add +5.4% |
| TXT Textron Inc. | 0.38% | 5,364,670 | $514.6M | Reduce -0.2% |
| ALB Albemarle Corp. | 0.37% | 3,725,084 | $490.7M | Add +7.2% |
| KMX Carmax Inc. | 0.36% | 5,522,019 | $481.0M | Reduce -1.2% |
| JBL Jabil Inc. | 0.36% | 3,575,075 | $478.9M | Reduce -4.0% |
| NXT Nextpower Inc. filed as NEXTRACKER INC | 0.34% | 8,217,513 | $462.4M | Add +719.5% |
| BNTX Biontech SE-ADR | 0.33% | 4,807,918 | $443.5M | Add +0.9% |
| UPS United Parcel Service Class B | 0.32% | 2,902,305 | $431.4M | Add +0.2% |
| ENTG Entegris Inc. | 0.31% | 2,982,829 | $419.2M | Reduce -0.1% |
| BAC Bank of America Corp. filed as BANK AMERICA CORP | 0.31% | 10,939,006 | $414.8M | Reduce -8.5% |
| UNP Union Pacific Corp. | 0.30% | 1,613,800 | $396.9M | Reduce -0.7% |
| CME Cme Group Inc. | 0.29% | 1,801,030 | $387.7M | Add +0.7% |
| EOG EOG Resources Inc. | 0.27% | 2,801,729 | $358.2M | Add +0.3% |
| RIG Transocean Ltd. | 0.26% | 55,744,039 | $350.1M | Add +9.9% |
| COP Conocophillips | 0.26% | 2,746,355 | $349.6M | New |
| RYTM Rhythm Pharmaceuticals Inc. | 0.25% | 7,747,591 | $335.7M | Reduce -3.8% |
| META Meta Platforms Inc. Class A | 0.25% | 689,225 | $334.7M | Add +1.7% |
| LIVN Livanova PLC | 0.25% | 5,937,151 | $332.1M | Add +2.5% |
| AAPL Apple Inc. | 0.24% | 1,890,800 | $324.2M | Reduce -1.8% |
| OLED Universal Display Corp. | 0.24% | 1,887,582 | $318.0M | Reduce -1.3% |
| TRMB Trimble Inc. | 0.24% | 4,917,281 | $316.5M | Reduce -2.1% |
| PGR Progressive Corp. | 0.22% | 1,456,740 | $301.3M | Reduce -0.5% |
| CSCO Cisco Systems Inc. | 0.22% | 5,952,490 | $297.1M | Reduce -13.1% |
| A Agilent Technologies Inc. | 0.22% | 1,994,516 | $290.2M | Reduce -1.7% |
| GLW Corning Inc. | 0.21% | 8,722,119 | $287.5M | Add +0.5% |
| BBWI Bath & Body Works Inc. | 0.21% | 5,583,225 | $279.3M | Reduce -0.4% |
| NTNX Nutanix Inc. Class A | 0.21% | 4,510,443 | $278.4M | Reduce -11.7% |
| ERIC Ericsson (lm) Tel-SP ADR filed as TELEFONAKTIEBOLAGET LM ERICS | 0.20% | 49,221,099 | $271.2M | Reduce -8.8% |
| CVS CVS Health Corp. | 0.20% | 3,395,405 | $270.8M | Reduce -1.4% |
| SYY Sysco Corp. | 0.19% | 3,180,835 | $258.2M | Add +44.6% |
| DLTR Dollar Tree Inc. | 0.19% | 1,915,185 | $255.0M | Add +28.9% |
| CW Curtiss-Wright Corp. | 0.19% | 975,265 | $249.6M | Reduce -3.5% |
| MKTX Marketaxess Holdings Inc. | 0.18% | 1,125,920 | $246.9M | Add +0.3% |
| GD General Dynamics Corp. | 0.18% | 835,890 | $236.1M | Reduce -0.8% |
| TER Teradyne Inc. | 0.17% | 2,050,880 | $231.4M | Add +43.8% |
| C Citigroup Inc. | 0.17% | 3,655,046 | $231.1M | Reduce -1.6% |
| DSGX The Descartes Systems Grp | 0.16% | 2,289,753 | $209.6M | Reduce -2.3% |
| DD Dupont DE Nemours Inc. | 0.15% | 2,701,550 | $207.1M | Reduce -0.6% |
| MA Mastercard Inc. Class A | 0.15% | 419,400 | $202.0M | No change |
| XNCR Xencor Inc. | 0.15% | 9,090,707 | $201.2M | Add +2.1% |
| OTIS Otis Worldwide Corp. | 0.14% | 1,884,941 | $187.1M | Add +0.1% |
Portfolio Sells Q4 2023 → Q1 2024
| SPLK Splunk Inc. | Sold out | 0.00% | −1.31 |
| BIIB Biogen Inc. | Reduce -0.3% | 2.61% | −0.72 |
| ADBE Adobe Inc. | Reduce -1.4% | 2.21% | −0.60 |
| TSLA Tesla Inc. | Reduce -0.4% | 1.19% | −0.60 |
| SONY Sony Group Corp. - SP ADR | Reduce -1.9% | 1.39% | −0.27 |
| ABT Abbott Laboratories | Reduce -67.0% | 0.08% | −0.17 |
| NVS Novartis AG-Sponsored ADR | Reduce -3.8% | 0.90% | −0.14 |
| AZN Astrazeneca PLC-Spons ADR | Reduce -0.1% | 2.17% | −0.12 |
| MAR Marriott International Class A | Reduce -64.5% | 0.06% | −0.10 |
| RCL Royal Caribbean Cruises Ltd. | Reduce -16.7% | 0.52% | −0.10 |
| TXN Texas Instruments Inc. | Reduce -0.6% | 2.02% | −0.09 |
| QSR Restaurant Brands Intern | Reduce -91.0% | 0.01% | −0.08 |
| HLT Hilton Worldwide Holdings Inc. | Sold out | 0.00% | −0.08 |
| ERIC Ericsson (lm) Tel-SP ADR | Reduce -8.8% | 0.20% | −0.07 |
| TMO Thermo Fisher Scientific Inc. | Reduce -8.2% | 1.20% | −0.07 |
| CARR Carrier Global Corp. | Reduce -29.4% | 0.13% | −0.06 |
| MCD McDonald's Corp. | Reduce -85.9% | 0.01% | −0.06 |
| CSCO Cisco Systems Inc. | Reduce -13.1% | 0.22% | −0.05 |
| OLED Universal Display Corp. | Reduce -1.3% | 0.24% | −0.05 |
| AAPL Apple Inc. | Reduce -1.8% | 0.24% | −0.05 |
| IRBTQ Irobot Corp. | Reduce -15.5% | 0.01% | −0.04 |
| ACM Aecom | Reduce -4.2% | 0.98% | −0.04 |
| RYTM Rhythm Pharmaceuticals Inc. | Reduce -3.8% | 0.25% | −0.04 |
| ADI Analog Devices Inc. | Reduce -0.8% | 0.54% | −0.04 |
| CPRI Capri Holdings Ltd. | Reduce -9.3% | 0.13% | −0.04 |
| DFS Discover Financial Services | Reduce -29.3% | 0.12% | −0.04 |
| INTU Intuit Inc. | Reduce -2.0% | 0.82% | −0.03 |
| DHR Danaher Corp. | Reduce -74.0% | 0.01% | −0.03 |
| PODD Insulet Corp. | Reduce -3.8% | 0.08% | −0.03 |
| VLO Valero Energy Corp. | Reduce -53.6% | 0.04% | −0.03 |
| MAT Mattel Inc. | Reduce -3.9% | 0.58% | −0.03 |
| BB Blackberry Ltd. | Reduce -0.8% | 0.07% | −0.03 |
| HES Hess Corp. | Reduce -2.7% | 0.88% | −0.03 |
| PINS Pinterest Inc. Class A | Reduce -9.2% | 0.11% | −0.03 |
| GS Goldman Sachs Group Inc. | Reduce -25.6% | 0.08% | −0.03 |
| ACLS Axcelis Technologies Inc. | Reduce -2.8% | 0.08% | −0.02 |
| CSX CSX Corp. | Reduce -24.2% | 0.07% | −0.02 |
| MS Morgan Stanley | Reduce -11.4% | 0.11% | −0.02 |
| UNP Union Pacific Corp. | Reduce -0.7% | 0.30% | −0.02 |
| JBL Jabil Inc. | Reduce -4.0% | 0.36% | −0.02 |
| VSXY Victoria's Secret & Co. | Reduce -8.2% | 0.03% | −0.02 |
| TJX TJX Companies Inc. | Reduce -3.5% | 0.98% | −0.02 |
| BMY Bristol-Myers Squibb Co. | Reduce -1.1% | 0.94% | −0.01 |
| AUR Aurora Innovation Inc. | Reduce -1.0% | 0.02% | −0.01 |
| CVS CVS Health Corp. | Reduce -1.4% | 0.20% | −0.01 |
| MXL Maxlinear Inc. | Reduce -2.3% | 0.03% | −0.01 |
| MSGE Madison Square Garden Entert | Reduce -86.5% | 0.00% | −0.01 |
| ROST Ross Stores Inc. | Reduce -0.9% | 1.17% | −0.01 |
| DD Dupont DE Nemours Inc. | Reduce -0.6% | 0.15% | −0.01 |
| DOOR Masonite International Corp. | Reduce -96.0% | 0.00% | −0.01 |
Portfolio Buys Q4 2023 → Q1 2024
| MU Micron Technology Inc. | Add +0.3% | 3.31% | +0.77 |
| NXT Nextpower Inc. | Add +719.5% | 0.34% | +0.31 |
| COP Conocophillips | New | 0.26% | +0.26 |
| BSX Boston Scientific Corp. | Add +0.1% | 1.94% | +0.20 |
| JPM JPMorgan Chase & Co. | Add +13.8% | 0.77% | +0.16 |
| DIS The Walt Disney Co. | Add +4.0% | 0.60% | +0.15 |
| DAL Delta Air Lines Inc. | Add +1.7% | 0.81% | +0.10 |
| UAL United Airlines Holdings Inc. | Add +1.5% | 0.85% | +0.08 |
| AAL American Airlines Group Inc. | Add +14.3% | 0.48% | +0.08 |
| SYY Sysco Corp. | Add +44.6% | 0.19% | +0.07 |
| AMZN Amazon.com Inc. | Add +0.5% | 0.58% | +0.06 |
| TDG Transdigm Group Inc. | Add +0.3% | 0.47% | +0.06 |
| META Meta Platforms Inc. Class A | Add +1.7% | 0.25% | +0.06 |
| OKTA Okta Inc. | Add +105.3% | 0.10% | +0.06 |
| GSK GSK PLC-Spon ADR | Add +5.4% | 0.41% | +0.05 |
| TER Teradyne Inc. | Add +43.8% | 0.17% | +0.05 |
| WOLF Wolfspeed Inc. | Add +175.1% | 0.12% | +0.05 |
| ELAN Elanco Animal Health Inc. | Add +4.5% | 0.64% | +0.05 |
| NSC Norfolk Southern Corp. | Add +96.2% | 0.08% | +0.04 |
| UNH Unitedhealth Group Inc. | Add +460.2% | 0.04% | +0.03 |
| IT Gartner Inc. | Add +236.6% | 0.04% | +0.03 |
| DLTR Dollar Tree Inc. | Add +28.9% | 0.19% | +0.02 |
| TPR Tapestry Inc. | Add +1155.6% | 0.02% | +0.02 |
| LPLA LPL Financial Holdings Inc. | Add +56.3% | 0.05% | +0.02 |
| PFGC Performance Food Group Co. | Add +209.5% | 0.03% | +0.02 |
| DOCU Docusign Inc. | New | 0.02% | +0.02 |
| LYFT LYFT Inc. Class A | Add +0.3% | 0.09% | +0.02 |
| SYK Stryker Corp. | Add +2.3% | 0.12% | +0.02 |
| NWL Newell Brands Inc. | Add +40.3% | 0.07% | +0.01 |
| ARLO Arlo Technologies Inc. | Add +5.0% | 0.05% | +0.01 |
| MRVL Marvell Technology Inc. | Add +18.0% | 0.05% | +0.01 |
| STX Seagate Technology Holdings | Add +38.9% | 0.04% | +0.01 |
| V Visa Inc. Class A | Add +0.3% | 0.84% | +0.01 |
| INDI Indie Semiconductor Inc. Class A | Add +61.1% | 0.04% | +0.01 |
| LIVN Livanova PLC | Add +2.5% | 0.25% | +0.01 |
| GKOS Glaukos Corp. | Add +7.4% | 0.06% | +0.01 |
| TW Tradeweb Markets Inc. Class A | Add +0.2% | 0.12% | +0.01 |
| FLYW Flywire Corp.-Voting | Add +277.1% | 0.01% | +0.01 |
| AVGO Broadcom Inc. | Add +1.3% | 0.06% | +0.01 |
| OTIS Otis Worldwide Corp. | Add +0.1% | 0.14% | +0.01 |
| RIG Transocean Ltd. | Add +9.9% | 0.26% | +0.01 |
| FTI Technipfmc PLC | Add +2.1% | 0.04% | +0.01 |
| FCX Freeport-McMoran Inc. | Add +0.8% | 0.12% | +0.01 |
| GLW Corning Inc. | Add +0.5% | 0.21% | +0.01 |
| PYPL PayPal Holdings Inc. | Add +3.1% | 0.09% | +0.01 |
| ALLO Allogene Therapeutics Inc. | Add +3.1% | 0.02% | +0.00 |
| DG Dollar General Corp. | Add +54.6% | 0.01% | +0.00 |
| BABA Alibaba Group Holding-SP ADR | Add +14.1% | 1.12% | +0.00 |
| IMNM Immunome Inc. | New | 0.00% | +0.00 |
| IQV Iqvia Holdings Inc. | Add +3.4% | 0.06% | +0.00 |
All Filings
| Quarter | Positions | 13F Reported Value | Top Holdings |
|---|---|---|---|
| Q2 2026 | 324 | $169.1B | MU, LLY, INTC, KLAC, GOOGL |
| Q1 2026 | 320 | $127.0B | LLY, MU, GOOGL, AZN, KLAC |
| Q4 2025 | 319 | $132.1B | LLY, MU, GOOGL, MSFT, KLAC |
| Q3 2025 | 327 | $130.6B | LLY, MU, MSFT, GOOGL, KLAC |
| Q2 2025 | 333 | $126.2B | LLY, MSFT, KLAC, MU, BSX |
| Q1 2025 | 335 | $121.0B | LLY, AMGN, BSX, MSFT, KLAC |
| Q4 2024 | 329 | $129.1B | LLY, MSFT, FDX, AMGN, BSX |
| Q3 2024 | 336 | $136.0B | LLY, AMGN, MSFT, KLAC, MU |
| Q2 2024 | 332 | $138.1B | LLY, MU, KLAC, AMGN, MSFT |
| Q1 2024 | 335 | $134.1B | LLY, MU, MSFT, AMGN, KLAC |