Primecap Management Co.
In its 13F for Q1 2026 (holdings as of March 31, 2026, filed May 11, 2026), Primecap Management Co. reported 320 stock positions worth $127.0 billion. Its top holding was Eli Lilly (LLY) at 6.7% of the portfolio, followed by Micron Technology (MU, 5.8%) and Alphabet Class A (GOOGL, 3.4%). Compared with Q4 2025, it opened 8 new positions, sold out of 7, added to 75 and reduced 180. The biggest buy was Conocophillips (COP, shares +0%) and the biggest sale Eli Lilly (LLY, shares −0%).
- Most Recent 13F
- Q2 2026
- Location
- PASADENA, CA
- CIK
- 0000763212
- Portfolio Value
- $127.0B (Q1 2026)
- SEC Filing
- 0000763212-26-000016 ↗ filed May 11, 2026
Holdings Value
Holdings 320 stocks · $127.0B
| LLY Eli Lilly & Co. | 6.68% | 9,223,432 | $8.5B | Reduce -0.5% |
| MU Micron Technology Inc. | 5.82% | 21,874,204 | $7.4B | Reduce -11.8% |
| GOOGL Alphabet Inc. Class A | 3.39% | 14,987,459 | $4.3B | Reduce -0.9% |
| AZN Astrazeneca PLC | 2.83% | 18,213,708 | $3.6B | Reduce -1.3% |
| KLAC KLA Corp. | 2.83% | 2,437,647 | $3.6B | Reduce -15.2% |
| INTC Intel Corp. | 2.63% | 75,761,968 | $3.3B | Reduce -0.5% |
| AMGN Amgen Inc. | 2.46% | 8,874,129 | $3.1B | Reduce -0.3% |
| NVDA Nvidia Corp. | 2.36% | 17,188,230 | $3.0B | Reduce -0.2% |
| FDX FedEx Corp. | 2.33% | 8,303,010 | $3.0B | Reduce -2.5% |
| BIIB Biogen Inc. | 2.13% | 14,757,607 | $2.7B | Reduce 0.0% |
| MSFT Microsoft Corp. | 2.12% | 7,264,560 | $2.7B | Reduce -0.3% |
| AMZN Amazon.com Inc. | 1.99% | 12,107,038 | $2.5B | Reduce -1.2% |
| BABA Alibaba Group Holding-SP ADR | 1.85% | 18,722,316 | $2.3B | Reduce -1.3% |
| TSLA Tesla Inc. | 1.79% | 6,125,520 | $2.3B | Reduce -3.0% |
| SCHW Schwab (charles) Corp. | 1.73% | 23,441,915 | $2.2B | Add +0.7% |
| BSX Boston Scientific Corp. | 1.61% | 32,529,774 | $2.0B | Add +4.6% |
| ROST Ross Stores Inc. | 1.56% | 9,170,030 | $2.0B | Reduce -0.4% |
| TXN Texas Instruments Inc. | 1.48% | 9,654,766 | $1.9B | Reduce -4.3% |
| LUV Southwest Airlines Co. | 1.39% | 47,069,495 | $1.8B | Reduce -0.7% |
| FLEX Flex Ltd. filed as FLEXTRONICS INTL LTD | 1.31% | 25,383,448 | $1.7B | Reduce -4.9% |
| GOOG Alphabet Inc. Class C | 1.29% | 5,720,910 | $1.6B | Reduce -0.7% |
| TJX TJX Companies Inc. filed as TJX COS INC NEW | 1.21% | 9,588,920 | $1.5B | Reduce -1.5% |
| COP Conocophillips | 1.20% | 11,579,265 | $1.5B | Add +0.0% |
| BMY Bristol-Myers Squibb Co. | 1.19% | 24,985,149 | $1.5B | Add +0.4% |
| ONC Beone Medicines Ltd.-ADR | 1.16% | 4,975,181 | $1.5B | Reduce -0.1% |
| UAL United Airlines Holdings Inc. | 1.14% | 15,750,610 | $1.5B | Reduce -1.4% |
| GSK GSK PLC-Spon ADR | 1.10% | 25,204,538 | $1.4B | Add +0.3% |
| RJF Raymond James Financial Inc. | 1.07% | 9,347,172 | $1.4B | Add +0.1% |
| BIDU Baidu Inc. - Spon ADR | 0.97% | 11,056,800 | $1.2B | Reduce -0.4% |
| V Visa Inc. Class A | 0.97% | 4,060,201 | $1.2B | Add +1.3% |
| SONY Sony Group Corp. - SP ADR | 0.95% | 58,530,830 | $1.2B | Add +0.4% |
| DAL Delta Air Lines Inc. | 0.92% | 17,548,567 | $1.2B | Reduce -0.3% |
| NVS Novartis AG-Sponsored ADR | 0.91% | 7,567,354 | $1.2B | Reduce -0.2% |
| ADBE Adobe Inc. | 0.91% | 4,730,846 | $1.1B | Add +28.7% |
| ELAN Elanco Animal Health Inc. | 0.86% | 45,840,956 | $1.1B | Reduce -0.8% |
| JPM JPMorgan Chase & Co. | 0.79% | 3,403,527 | $1.0B | Reduce -5.6% |
| ADI Analog Devices Inc. | 0.79% | 3,136,089 | $997.7M | Reduce -0.2% |
| TMO Thermo Fisher Scientific Inc. | 0.77% | 1,982,531 | $974.5M | Reduce -3.6% |
| NTAP Netapp Inc. | 0.73% | 9,057,455 | $927.4M | Reduce -0.1% |
| NTRS Northern Trust Corp. | 0.72% | 6,549,037 | $914.0M | Reduce -0.9% |
| JBL Jabil Inc. | 0.69% | 3,281,169 | $871.6M | Reduce -1.9% |
| ORCL Oracle Corp. | 0.66% | 5,674,130 | $834.7M | Reduce -5.9% |
| NXT Nextpower Inc. | 0.64% | 6,760,847 | $815.0M | Reduce -2.7% |
| BMRN Biomarin Pharmaceutical Inc. | 0.63% | 14,194,005 | $801.8M | Reduce -2.4% |
| ACM Aecom | 0.58% | 8,647,073 | $733.4M | Reduce -0.2% |
| RCL Royal Caribbean Cruises Ltd. | 0.51% | 2,346,921 | $645.8M | Reduce -2.6% |
| IEX Idex Corp. | 0.49% | 3,302,937 | $626.1M | Add +2.4% |
| CAT Caterpillar Inc. | 0.49% | 872,260 | $618.0M | Reduce -0.9% |
| WFC Wells Fargo & Co. | 0.48% | 7,723,102 | $614.8M | Reduce -7.6% |
| DIS The Walt Disney Co. filed as DISNEY WALT CO | 0.47% | 6,235,127 | $600.9M | Reduce -0.0% |
| J Jacobs Solutions Inc. | 0.45% | 4,515,479 | $574.7M | Reduce -0.2% |
| GLW Corning Inc. | 0.44% | 4,134,772 | $562.2M | Reduce -0.1% |
| MKTX Marketaxess Holdings Inc. | 0.43% | 3,347,125 | $552.2M | Add +5.4% |
| CME Cme Group Inc. | 0.42% | 1,818,718 | $537.2M | Reduce -3.2% |
| AAL American Airlines Group Inc. | 0.41% | 48,989,954 | $526.2M | Reduce -0.0% |
| ALB Albemarle Corp. | 0.38% | 2,664,709 | $478.4M | Reduce -5.0% |
| TDG Transdigm Group Inc. | 0.37% | 410,217 | $475.4M | No change |
| CVX Chevron Corp. | 0.37% | 2,291,577 | $474.1M | Reduce -1.4% |
| ASML ASML Holding NV-NY Reg SHS filed as ASML HLDG NV | 0.37% | 353,076 | $466.4M | Reduce -1.0% |
| INTU Intuit Inc. | 0.36% | 1,071,317 | $463.2M | Add +1.4% |
| PYPL PayPal Holdings Inc. | 0.36% | 10,026,490 | $453.5M | Add +22.8% |
| AAPL Apple Inc. | 0.35% | 1,760,880 | $446.9M | No change |
| META Meta Platforms Inc. Class A | 0.35% | 774,240 | $443.0M | Reduce -1.8% |
| LIN Linde PLC | 0.35% | 888,520 | $440.5M | Reduce -0.0% |
| MAT Mattel Inc. | 0.34% | 29,697,924 | $431.5M | Reduce -0.4% |
| NFLX Netflix Inc. | 0.33% | 4,411,790 | $424.2M | Add +9.7% |
| ERIC Ericsson (lm) Tel-SP ADR filed as TELEFONAKTIEBOLAGET LM ERICS | 0.33% | 37,504,013 | $422.7M | Add +40.8% |
| HPQ HP Inc. | 0.32% | 21,469,625 | $412.4M | Add +21.6% |
| HPE Hewlett Packard Enterprise | 0.32% | 17,229,080 | $410.2M | Reduce -10.3% |
| DLTR Dollar Tree Inc. | 0.32% | 3,728,875 | $408.3M | Reduce -2.7% |
| AMAT Applied Materials Inc. | 0.32% | 1,174,126 | $401.3M | Reduce -4.8% |
| BAH Booz Allen Hamilton Holdings | 0.30% | 4,829,798 | $376.9M | Add +3.5% |
| CSCO Cisco Systems Inc. | 0.30% | 4,839,160 | $375.5M | Reduce -0.0% |
| ENTG Entegris Inc. | 0.29% | 3,142,833 | $368.5M | Reduce -0.6% |
| CW Curtiss-Wright Corp. | 0.29% | 536,840 | $365.7M | Reduce -4.8% |
| USFD US Foods Holding Corp. | 0.29% | 3,946,310 | $363.9M | Add +0.9% |
| GKOS Glaukos Corp. | 0.29% | 3,370,628 | $362.9M | Reduce -0.2% |
| ZBH Zimmer Biomet Holdings Inc. | 0.28% | 3,907,150 | $353.3M | Reduce -2.3% |
| BNTX Biontech SE-ADR | 0.27% | 3,793,711 | $337.2M | Reduce -0.2% |
| SNPS Synopsys Inc. | 0.26% | 822,400 | $326.1M | Add +11.9% |
| AMTM Amentum Holdings Inc. | 0.25% | 12,085,294 | $315.2M | Reduce -0.3% |
| FICO Fair Isaac Corp. | 0.24% | 289,047 | $308.6M | Add +18.8% |
| BNY Bank of New York Mellon Corp. filed as BANK NEW YORK MELLON CORP | 0.24% | 2,534,640 | $300.7M | Add +0.5% |
| RYTM Rhythm Pharmaceuticals Inc. | 0.23% | 3,417,509 | $297.2M | Reduce -1.8% |
| NSC Norfolk Southern Corp. | 0.23% | 1,033,410 | $296.6M | Add +3.1% |
| DHR Danaher Corp. | 0.23% | 1,556,970 | $295.2M | Add +5.2% |
| MRVL Marvell Technology Inc. | 0.23% | 2,974,705 | $294.6M | Add +1.6% |
| MA Mastercard Inc. Class A | 0.23% | 582,171 | $290.9M | Add +11.8% |
| EW Edwards Lifesciences Corp. | 0.22% | 3,422,791 | $274.1M | Add +0.1% |
| C Citigroup Inc. | 0.21% | 2,390,500 | $271.1M | Reduce -3.1% |
| LIVN Livanova PLC | 0.21% | 4,207,052 | $267.4M | Reduce -0.4% |
| XMTR Xometry Inc. Class A | 0.21% | 6,495,497 | $265.3M | Add +14.3% |
| SYY Sysco Corp. | 0.21% | 3,701,838 | $264.1M | Add +0.5% |
| BURL Burlington Stores Inc. | 0.20% | 792,590 | $257.9M | Reduce -1.8% |
| TRMB Trimble Inc. | 0.20% | 3,917,861 | $255.6M | Reduce -0.3% |
| ILMN Illumina Inc. | 0.20% | 2,067,299 | $254.8M | Add +3.9% |
| PFGC Performance Food Group Co. | 0.18% | 2,707,798 | $231.9M | Add +7.0% |
| EOG EOG Resources Inc. | 0.18% | 1,599,662 | $231.3M | Reduce -1.3% |
| AVGO Broadcom Inc. | 0.18% | 743,318 | $230.1M | Reduce -1.6% |
| XPEV Xpeng Inc. - ADR | 0.17% | 12,732,987 | $217.9M | Reduce -0.5% |
Portfolio Sells Q4 2025 → Q1 2026
| LLY Eli Lilly & Co. | Reduce -0.5% | 6.68% | −0.86 |
| MSFT Microsoft Corp. | Reduce -0.3% | 2.12% | −0.55 |
| TSLA Tesla Inc. | Reduce -3.0% | 1.79% | −0.36 |
| BABA Alibaba Group Holding-SP ADR | Reduce -1.3% | 1.85% | −0.26 |
| ORCL Oracle Corp. | Reduce -5.9% | 0.66% | −0.23 |
| QCOM Qualcomm Inc. | Reduce -69.8% | 0.07% | −0.23 |
| UAL United Airlines Holdings Inc. | Reduce -1.4% | 1.14% | −0.21 |
| GOOGL Alphabet Inc. Class A | Reduce -0.9% | 3.39% | −0.19 |
| AMZN Amazon.com Inc. | Reduce -1.2% | 1.99% | −0.16 |
| AAL American Airlines Group Inc. | Reduce -0.0% | 0.41% | −0.15 |
| FLUT Flutter Entertainment PLC-Di | Reduce -0.1% | 0.14% | −0.15 |
| TMO Thermo Fisher Scientific Inc. | Reduce -3.6% | 0.77% | −0.14 |
| BIDU Baidu Inc. - Spon ADR | Reduce -0.4% | 0.97% | −0.13 |
| MAT Mattel Inc. | Reduce -0.4% | 0.34% | −0.11 |
| MDB Mongodb Inc. | Reduce -0.7% | 0.16% | −0.11 |
| WFC Wells Fargo & Co. | Reduce -7.6% | 0.48% | −0.11 |
| JPM JPMorgan Chase & Co. | Reduce -5.6% | 0.79% | −0.09 |
| LUV Southwest Airlines Co. | Reduce -0.7% | 1.39% | −0.09 |
| GOOG Alphabet Inc. Class C | Reduce -0.7% | 1.29% | −0.08 |
| NVDA Nvidia Corp. | Reduce -0.2% | 2.36% | −0.07 |
| IQV Iqvia Holdings Inc. | Reduce -85.6% | 0.01% | −0.07 |
| DIS The Walt Disney Co. | Reduce -0.0% | 0.47% | −0.06 |
| WHR Whirlpool Corp. | Reduce -1.8% | 0.16% | −0.05 |
| ACM Aecom | Reduce -0.2% | 0.58% | −0.05 |
| RYTM Rhythm Pharmaceuticals Inc. | Reduce -1.8% | 0.23% | −0.05 |
| META Meta Platforms Inc. Class A | Reduce -1.8% | 0.35% | −0.05 |
| PGR Progressive Corp. | Reduce -12.6% | 0.16% | −0.04 |
| OLED Universal Display Corp. | Reduce -0.4% | 0.16% | −0.04 |
| DLTR Dollar Tree Inc. | Reduce -2.7% | 0.32% | −0.04 |
| FIS Fidelity National Info Serv | Reduce -74.3% | 0.01% | −0.03 |
| TRMB Trimble Inc. | Reduce -0.3% | 0.20% | −0.03 |
| RVTY Revvity Inc. | Reduce -30.0% | 0.06% | −0.03 |
| ALK Alaska Air Group Inc. | Reduce -0.3% | 0.09% | −0.03 |
| HPE Hewlett Packard Enterprise | Reduce -10.3% | 0.32% | −0.03 |
| XPEV Xpeng Inc. - ADR | Reduce -0.5% | 0.17% | −0.03 |
| ADSK Autodesk Inc. | Reduce -1.9% | 0.11% | −0.02 |
| CPRI Capri Holdings Ltd. | Reduce -11.4% | 0.05% | −0.02 |
| BMRN Biomarin Pharmaceutical Inc. | Reduce -2.4% | 0.63% | −0.02 |
| LYFT LYFT Inc. Class A | Reduce -2.3% | 0.04% | −0.02 |
| A Agilent Technologies Inc. | Reduce -0.3% | 0.12% | −0.02 |
| AMTM Amentum Holdings Inc. | Reduce -0.3% | 0.25% | −0.02 |
| AVGO Broadcom Inc. | Reduce -1.6% | 0.18% | −0.02 |
| IMCR Immunocore Holdings PLC-ADR | Reduce -6.8% | 0.09% | −0.02 |
| COF Capital One Financial Corp. | Reduce -0.9% | 0.05% | −0.02 |
| CRM Salesforce Inc. | Reduce -3.4% | 0.04% | −0.02 |
| CCL Carnival Corp. | Reduce -0.1% | 0.11% | −0.01 |
| DOCU Docusign Inc. | Reduce -66.0% | 0.00% | −0.01 |
| GTM Zoominfo Technologies Inc. | Reduce -12.1% | 0.02% | −0.01 |
| PINS Pinterest Inc. Class A | Reduce -0.1% | 0.04% | −0.01 |
| RYAAY Ryanair Holdings PLC-SP ADR | Reduce -7.5% | 0.04% | −0.01 |
Portfolio Buys Q4 2025 → Q1 2026
| COP Conocophillips | Add +0.0% | 1.20% | +0.38 |
| BMY Bristol-Myers Squibb Co. | Add +0.4% | 1.19% | +0.18 |
| GSK GSK PLC-Spon ADR | Add +0.3% | 1.10% | +0.16 |
| ERIC Ericsson (lm) Tel-SP ADR | Add +40.8% | 0.33% | +0.14 |
| BA The Boeing Co. | Add +8646.3% | 0.12% | +0.12 |
| GTLB Gitlab Inc. Class A | Add +529.6% | 0.12% | +0.09 |
| USFD US Foods Holding Corp. | Add +0.9% | 0.29% | +0.06 |
| IEX Idex Corp. | Add +2.4% | 0.49% | +0.06 |
| CARR Carrier Global Corp. | Add +31.5% | 0.17% | +0.05 |
| WM Waste Management Inc. | New | 0.05% | +0.05 |
| NFLX Netflix Inc. | Add +9.7% | 0.33% | +0.05 |
| MRVL Marvell Technology Inc. | Add +1.6% | 0.23% | +0.04 |
| LHX L3HARRIS Technologies Inc. | New | 0.04% | +0.04 |
| HPQ HP Inc. | Add +21.6% | 0.32% | +0.03 |
| EVR Evercore Inc. Class A | Add +60.9% | 0.08% | +0.03 |
| AMD Advanced Micro Devices | Add +19.9% | 0.17% | +0.03 |
| MRSH Marsh & McLennan Cos | Add +38.5% | 0.10% | +0.03 |
| VNOM Viper Energy Inc. Class A | Add +68.4% | 0.04% | +0.02 |
| PVLA Palvella Therapeutics Inc. | New | 0.02% | +0.02 |
| THG Hanover Insurance Group Inc./ | Add +377.1% | 0.02% | +0.02 |
| CSGP Costar Group Inc. | Add +432.2% | 0.03% | +0.02 |
| BNY Bank of New York Mellon Corp. | Add +0.5% | 0.24% | +0.02 |
| NSC Norfolk Southern Corp. | Add +3.1% | 0.23% | +0.01 |
| PSN Parsons Corp. | Add +56.8% | 0.04% | +0.01 |
| SYNA Synaptics Inc. | Add +111.8% | 0.02% | +0.01 |
| SPOT Spotify Technology SA | Add +26.0% | 0.13% | +0.01 |
| PFGC Performance Food Group Co. | Add +7.0% | 0.18% | +0.01 |
| SEPN Septerna Inc. | Add +92.1% | 0.02% | +0.01 |
| ALLO Allogene Therapeutics Inc. | Add +3.0% | 0.02% | +0.01 |
| FITB Fifth Third Bancorp | New | 0.01% | +0.01 |
| IMNM Immunome Inc. | Add +2.2% | 0.08% | +0.01 |
| TOST Toast Inc. Class A | Add +205.4% | 0.01% | +0.01 |
| DKS Dick's Sporting Goods Inc. | Add +132.4% | 0.01% | +0.01 |
| BIRK Birkenstock Holding PLC | Add +54.4% | 0.02% | +0.00 |
| XEL Xcel Energy Inc. | New | 0.00% | +0.00 |
| MA Mastercard Inc. Class A | Add +11.8% | 0.23% | +0.00 |
| ILMN Illumina Inc. | Add +3.9% | 0.20% | +0.00 |
| SYY Sysco Corp. | Add +0.5% | 0.21% | +0.00 |
| ITT Itt Inc. | New | 0.00% | +0.00 |
| BRKR Bruker Corp. | Add +30.9% | 0.02% | +0.00 |
| GFF Griffon Corp. | Add +1.6% | 0.02% | +0.00 |
| SN Sharkninja Inc. | Add +7.5% | 0.01% | +0.00 |
| TMHC Taylor Morrison Home Corp. | Add +22.4% | 0.00% | +0.00 |
| WMG Warner Music Group Corp. Class A | New | 0.00% | +0.00 |
| BAC Bank of America Corp. | Add +8.7% | 0.11% | +0.00 |
| SNDK Sandisk Corp. | New | 0.00% | +0.00 |
| SVV Savers Value Village Inc. | Add +21.9% | 0.00% | 0.00 |
| ELF Elf Beauty Inc. | Add +20.3% | 0.03% | −0.00 |
| SAP Sap SE-Sponsored ADR | Add +18.2% | 0.00% | −0.00 |
| INDI Indie Semiconductor Inc. Class A | Add +4.3% | 0.08% | −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 |