Primecap Management Co.
In its 13F for Q2 2026 (holdings as of June 30, 2026, filed August 14, 2026), Primecap Management Co. reported 324 stock positions worth $169.1 billion. Its top holding was Micron Technology (MU) at 13.1% of the portfolio, followed by Eli Lilly (LLY, 6.5%) and Intel (INTC, 6.2%). Compared with Q1 2026, it opened 8 new positions, sold out of 6, added to 82 and reduced 180. The biggest buy was American Airlines (AAL, shares +44%) and the biggest sale Amgen (AMGN, shares −24%).
- Most Recent 13F
- Q2 2026
- Location
- PASADENA, CA
- CIK
- 0000763212
- Portfolio Value
- $169.1B (Q2 2026)
- SEC Filing
- 0000763212-26-000028 ↗ filed Aug 14, 2026
Holdings Value
Holdings 324 stocks · $169.1B
| MU Micron Technology Inc. | 13.12% | 19,217,236 | $22.2B | Reduce -12.2% |
| LLY Eli Lilly & Co. | 6.51% | 9,172,904 | $11.0B | Reduce -0.6% |
| INTC Intel Corp. | 6.21% | 75,250,958 | $10.5B | Reduce -0.7% |
| KLAC KLA Corp. | 3.66% | 20,536,730 | $6.2B | Reduce -15.8% |
| GOOGL Alphabet Inc. Class A | 3.14% | 14,859,769 | $5.3B | Reduce -0.8% |
| FLEX Flex Ltd. | 2.24% | 23,358,875 | $3.8B | Reduce -8.0% |
| AZN Astrazeneca PLC | 2.03% | 18,095,178 | $3.4B | Reduce -0.7% |
| NVDA Nvidia Corp. | 2.02% | 17,079,180 | $3.4B | Reduce -0.6% |
| BIIB Biogen Inc. | 1.94% | 15,154,606 | $3.3B | Add +2.7% |
| AMZN Amazon.com Inc. | 1.69% | 11,962,188 | $2.9B | Reduce -1.2% |
| MSFT Microsoft Corp. | 1.58% | 7,140,870 | $2.7B | Reduce -1.7% |
| TSLA Tesla Inc. | 1.52% | 6,103,030 | $2.6B | Reduce -0.4% |
| FDX FedEx Corp. | 1.51% | 8,156,799 | $2.6B | Reduce -1.8% |
| TXN Texas Instruments Inc. | 1.50% | 8,514,989 | $2.5B | Reduce -11.8% |
| LUV Southwest Airlines Co. | 1.48% | 48,797,725 | $2.5B | Add +3.7% |
| AMGN Amgen Inc. | 1.45% | 6,756,962 | $2.4B | Reduce -23.9% |
| SCHW Schwab (charles) Corp. | 1.37% | 25,120,895 | $2.3B | Add +7.2% |
| UAL United Airlines Holdings Inc. | 1.32% | 16,461,630 | $2.2B | Add +4.5% |
| BSX Boston Scientific Corp. | 1.27% | 50,520,914 | $2.2B | Add +55.3% |
| ROST Ross Stores Inc. | 1.15% | 9,104,980 | $1.9B | Reduce -0.7% |
| GOOG Alphabet Inc. Class C | 1.13% | 5,399,060 | $1.9B | Reduce -5.6% |
| BABA Alibaba Group Holding-SP ADR | 1.06% | 18,611,306 | $1.8B | Reduce -0.6% |
| DAL Delta Air Lines Inc. | 0.97% | 17,521,167 | $1.6B | Reduce -0.2% |
| V Visa Inc. Class A | 0.87% | 4,268,491 | $1.5B | Add +5.1% |
| BMY Bristol-Myers Squibb Co. | 0.85% | 24,923,900 | $1.4B | Reduce -0.3% |
| TJX TJX Companies Inc. filed as TJX COS INC NEW | 0.85% | 9,476,020 | $1.4B | Reduce -1.2% |
| ONC Beone Medicines Ltd.-ADR | 0.84% | 5,007,931 | $1.4B | Add +0.7% |
| RJF Raymond James Financial Inc. | 0.83% | 9,242,552 | $1.4B | Reduce -1.1% |
| NTAP Netapp Inc. | 0.83% | 9,016,690 | $1.4B | Reduce -0.5% |
| GSK GSK PLC-Spon ADR | 0.78% | 25,182,068 | $1.3B | Reduce -0.1% |
| AAL American Airlines Group Inc. | 0.76% | 70,732,954 | $1.3B | Add +44.4% |
| BIDU Baidu Inc. - Spon ADR | 0.74% | 11,010,100 | $1.3B | Reduce -0.4% |
| ADI Analog Devices Inc. | 0.73% | 3,128,329 | $1.2B | Reduce -0.3% |
| JBL Jabil Inc. | 0.72% | 3,167,120 | $1.2B | Reduce -3.5% |
| COP Conocophillips | 0.71% | 11,588,365 | $1.2B | Add +0.1% |
| SONY Sony Group Corp. - SP ADR | 0.71% | 59,603,230 | $1.2B | Add +1.8% |
| ELAN Elanco Animal Health Inc. | 0.66% | 45,445,012 | $1.1B | Reduce -0.9% |
| JPM JPMorgan Chase & Co. | 0.65% | 3,382,627 | $1.1B | Reduce -0.6% |
| ADBE Adobe Inc. | 0.63% | 5,227,139 | $1.1B | Add +10.5% |
| NTRS Northern Trust Corp. | 0.63% | 6,100,742 | $1.1B | Reduce -6.8% |
| GLW Corning Inc. | 0.62% | 4,131,872 | $1.1B | Reduce -0.1% |
| NVS Novartis AG-Sponsored ADR | 0.61% | 6,592,124 | $1.0B | Reduce -12.9% |
| TMO Thermo Fisher Scientific Inc. | 0.59% | 1,982,271 | $993.8M | Reduce -0.0% |
| CAT Caterpillar Inc. | 0.55% | 871,700 | $928.3M | Reduce -0.1% |
| MRVL Marvell Technology Inc. | 0.49% | 2,757,995 | $821.6M | Reduce -7.3% |
| BMRN Biomarin Pharmaceutical Inc. | 0.48% | 14,190,183 | $812.0M | Reduce -0.0% |
| NXT Nextpower Inc. | 0.47% | 6,688,767 | $796.9M | Reduce -1.1% |
| ORCL Oracle Corp. | 0.47% | 5,386,230 | $789.4M | Reduce -5.1% |
| HPE Hewlett Packard Enterprise | 0.46% | 17,140,875 | $773.2M | Reduce -0.5% |
| AMAT Applied Materials Inc. | 0.45% | 1,042,926 | $754.0M | Reduce -11.2% |
| IEX Idex Corp. | 0.44% | 3,300,072 | $749.0M | Reduce -0.1% |
| ASML ASML Holding NV-NY Reg SHS filed as ASML HLDG NV | 0.41% | 351,576 | $699.4M | Reduce -0.4% |
| DIS The Walt Disney Co. filed as DISNEY WALT CO | 0.40% | 7,020,957 | $675.8M | Add +12.6% |
| RCL Royal Caribbean Cruises Ltd. | 0.40% | 2,109,421 | $669.8M | Reduce -10.1% |
| XMTR Xometry Inc. Class A | 0.38% | 6,636,057 | $640.5M | Add +2.2% |
| ILMN Illumina Inc. | 0.37% | 3,514,649 | $618.0M | Add +70.0% |
| ACM Aecom | 0.36% | 8,787,043 | $613.3M | Add +1.6% |
| FDXF FedEx Freight Holding Co. | 0.36% | 4,048,660 | $611.3M | Reduce -2.5% |
| AMD Advanced Micro Devices | 0.36% | 1,047,730 | $608.6M | Reduce -0.2% |
| J Jacobs Solutions Inc. | 0.34% | 4,565,799 | $575.3M | Add +1.1% |
| CSCO Cisco Systems Inc. | 0.34% | 4,838,460 | $568.3M | Reduce -0.0% |
| ENTG Entegris Inc. | 0.33% | 3,125,433 | $562.1M | Reduce -0.6% |
| WFC Wells Fargo & Co. | 0.33% | 6,712,022 | $554.7M | Reduce -13.1% |
| TDG Transdigm Group Inc. | 0.32% | 410,217 | $546.4M | No change |
| HPQ HP Inc. | 0.32% | 24,885,325 | $546.0M | Add +15.9% |
| AAPL Apple Inc. | 0.30% | 1,760,880 | $509.5M | No change |
| ERIC Ericsson (lm) Tel-SP ADR filed as TELEFONAKTIEBOLAGET LM ERICS | 0.27% | 41,613,613 | $464.0M | Add +11.0% |
| LIN Linde PLC | 0.27% | 886,920 | $460.3M | Reduce -0.2% |
| DLTR Dollar Tree Inc. | 0.27% | 3,768,875 | $455.8M | Add +1.1% |
| FICO Fair Isaac Corp. | 0.26% | 362,835 | $433.5M | Add +25.5% |
| GKOS Glaukos Corp. | 0.25% | 3,040,705 | $425.0M | Reduce -9.8% |
| PYPL PayPal Holdings Inc. | 0.25% | 9,775,170 | $422.1M | Reduce -2.5% |
| CME Cme Group Inc. | 0.25% | 1,904,643 | $420.6M | Add +4.7% |
| MAT Mattel Inc. | 0.24% | 29,505,735 | $409.5M | Reduce -0.7% |
| USFD US Foods Holding Corp. | 0.24% | 3,980,409 | $407.0M | Add +0.9% |
| SNPS Synopsys Inc. | 0.24% | 895,350 | $399.4M | Add +8.9% |
| META Meta Platforms Inc. Class A | 0.24% | 708,290 | $399.0M | Reduce -8.5% |
| MKTX Marketaxess Holdings Inc. | 0.24% | 3,504,905 | $397.8M | Add +4.7% |
| CW Curtiss-Wright Corp. | 0.23% | 514,815 | $390.1M | Reduce -4.1% |
| BAH Booz Allen Hamilton Holdings | 0.23% | 6,397,644 | $388.1M | Add +32.5% |
| CVX Chevron Corp. | 0.22% | 2,285,458 | $378.8M | Reduce -0.3% |
| BNY Bank of New York Mellon Corp. | 0.22% | 2,603,540 | $376.5M | Add +2.7% |
| DHR Danaher Corp. | 0.21% | 1,889,070 | $359.8M | Add +21.3% |
| ALB Albemarle Corp. | 0.21% | 2,652,009 | $358.1M | Reduce -0.5% |
| MRSH Marsh & McLennan Cos | 0.21% | 2,145,025 | $357.5M | Add +199.0% |
| RYTM Rhythm Pharmaceuticals Inc. | 0.21% | 3,168,853 | $351.8M | Reduce -7.3% |
| BNTX Biontech SE-ADR | 0.21% | 3,772,031 | $351.0M | Reduce -0.6% |
| PANW Palo Alto Networks Inc. | 0.21% | 1,019,890 | $347.8M | Reduce -1.4% |
| LIVN Livanova PLC | 0.20% | 4,168,377 | $342.8M | Reduce -0.9% |
| NFLX Netflix Inc. | 0.20% | 4,790,465 | $342.0M | Add +8.6% |
| MA Mastercard Inc. Class A | 0.20% | 654,691 | $336.2M | Add +12.5% |
| WDC Western Digital Corp. | 0.20% | 516,440 | $329.9M | Reduce -10.5% |
| ZBH Zimmer Biomet Holdings Inc. | 0.19% | 3,816,680 | $328.6M | Reduce -2.3% |
| C Citigroup Inc. | 0.19% | 2,333,600 | $326.6M | Reduce -2.4% |
| NSC Norfolk Southern Corp. | 0.19% | 1,032,910 | $324.9M | Reduce -0.1% |
| SYY Sysco Corp. | 0.19% | 3,750,929 | $313.5M | Add +1.3% |
| EW Edwards Lifesciences Corp. | 0.18% | 3,408,291 | $308.3M | Reduce -0.4% |
| PFGC Performance Food Group Co. | 0.18% | 2,728,898 | $305.1M | Add +0.8% |
| INTU Intuit Inc. | 0.17% | 1,110,067 | $289.7M | Add +3.6% |
| MDB Mongodb Inc. | 0.17% | 846,004 | $284.2M | Add +0.4% |
Portfolio Sells Q1 2026 → Q2 2026
| AMGN Amgen Inc. | Reduce -23.9% | 1.45% | −1.01 |
| FDX FedEx Corp. | Reduce -1.8% | 1.51% | −0.82 |
| AZN Astrazeneca PLC | Reduce -0.7% | 2.03% | −0.80 |
| BABA Alibaba Group Holding-SP ADR | Reduce -0.6% | 1.06% | −0.79 |
| MSFT Microsoft Corp. | Reduce -1.7% | 1.58% | −0.54 |
| ROST Ross Stores Inc. | Reduce -0.7% | 1.15% | −0.42 |
| TJX TJX Companies Inc. | Reduce -1.2% | 0.85% | −0.36 |
| BMY Bristol-Myers Squibb Co. | Reduce -0.3% | 0.85% | −0.34 |
| NVDA Nvidia Corp. | Reduce -0.6% | 2.02% | −0.34 |
| GSK GSK PLC-Spon ADR | Reduce -0.1% | 0.78% | −0.31 |
| AMZN Amazon.com Inc. | Reduce -1.2% | 1.69% | −0.30 |
| NVS Novartis AG-Sponsored ADR | Reduce -12.9% | 0.61% | −0.30 |
| TSLA Tesla Inc. | Reduce -0.4% | 1.52% | −0.28 |
| GOOGL Alphabet Inc. Class A | Reduce -0.8% | 3.14% | −0.25 |
| RJF Raymond James Financial Inc. | Reduce -1.1% | 0.83% | −0.23 |
| BIDU Baidu Inc. - Spon ADR | Reduce -0.4% | 0.74% | −0.23 |
| ELAN Elanco Animal Health Inc. | Reduce -0.9% | 0.66% | −0.20 |
| ORCL Oracle Corp. | Reduce -5.1% | 0.47% | −0.19 |
| TMO Thermo Fisher Scientific Inc. | Reduce -0.0% | 0.59% | −0.18 |
| LLY Eli Lilly & Co. | Reduce -0.6% | 6.51% | −0.17 |
| NXT Nextpower Inc. | Reduce -1.1% | 0.47% | −0.17 |
| ALB Albemarle Corp. | Reduce -0.5% | 0.21% | −0.16 |
| GOOG Alphabet Inc. Class C | Reduce -5.6% | 1.13% | −0.16 |
| WFC Wells Fargo & Co. | Reduce -13.1% | 0.33% | −0.16 |
| BMRN Biomarin Pharmaceutical Inc. | Reduce -0.0% | 0.48% | −0.15 |
| CVX Chevron Corp. | Reduce -0.3% | 0.22% | −0.15 |
| JPM JPMorgan Chase & Co. | Reduce -0.6% | 0.65% | −0.13 |
| FDXF FedEx Freight Holding Co. | Reduce -2.5% | 0.36% | −0.13 |
| META Meta Platforms Inc. Class A | Reduce -8.5% | 0.24% | −0.11 |
| RCL Royal Caribbean Cruises Ltd. | Reduce -10.1% | 0.40% | −0.11 |
| PYPL PayPal Holdings Inc. | Reduce -2.5% | 0.25% | −0.11 |
| DOW Dow Inc. | Reduce -48.3% | 0.04% | −0.11 |
| GS Goldman Sachs Group Inc. | Reduce -99.3% | 0.00% | −0.10 |
| MAT Mattel Inc. | Reduce -0.7% | 0.24% | −0.10 |
| NTRS Northern Trust Corp. | Reduce -6.8% | 0.63% | −0.09 |
| ZBH Zimmer Biomet Holdings Inc. | Reduce -2.3% | 0.19% | −0.08 |
| TRMB Trimble Inc. | Reduce -0.1% | 0.12% | −0.08 |
| WHR Whirlpool Corp. | Reduce -4.0% | 0.08% | −0.08 |
| LIN Linde PLC | Reduce -0.2% | 0.27% | −0.07 |
| XPEV Xpeng Inc. - ADR | Reduce -1.7% | 0.10% | −0.07 |
| CTRA Coterra Energy Inc. | Sold out | 0.00% | −0.06 |
| EOG EOG Resources Inc. | Reduce -1.1% | 0.12% | −0.06 |
| BNTX Biontech SE-ADR | Reduce -0.6% | 0.21% | −0.06 |
| CW Curtiss-Wright Corp. | Reduce -4.1% | 0.23% | −0.06 |
| ADI Analog Devices Inc. | Reduce -0.3% | 0.73% | −0.05 |
| IEX Idex Corp. | Reduce -0.1% | 0.44% | −0.05 |
| QCOM Qualcomm Inc. | Reduce -66.1% | 0.03% | −0.05 |
| ADSK Autodesk Inc. | Reduce -0.5% | 0.07% | −0.04 |
| CIEN Ciena Corp. | Reduce -29.7% | 0.09% | −0.04 |
| NSC Norfolk Southern Corp. | Reduce -0.1% | 0.19% | −0.04 |
Portfolio Buys Q1 2026 → Q2 2026
| AAL American Airlines Group Inc. | Add +44.4% | 0.76% | +0.34 |
| UAL United Airlines Holdings Inc. | Add +4.5% | 1.32% | +0.18 |
| XMTR Xometry Inc. Class A | Add +2.2% | 0.38% | +0.17 |
| ILMN Illumina Inc. | Add +70.0% | 0.37% | +0.16 |
| SPCX Space Exploration Techn Class A | New | 0.14% | +0.14 |
| MRSH Marsh & McLennan Cos | Add +199.0% | 0.21% | +0.11 |
| LUV Southwest Airlines Co. | Add +3.7% | 1.48% | +0.09 |
| DELL Dell Technologies -C | Add +1.9% | 0.10% | +0.05 |
| AXON Axon Enterprise Inc. | Add +1015.2% | 0.04% | +0.04 |
| DVN Devon Energy Corp. | New | 0.04% | +0.04 |
| FHN First Horizon Corp. | New | 0.03% | +0.03 |
| XEL Xcel Energy Inc. | Add +640.8% | 0.02% | +0.02 |
| GTLB Gitlab Inc. Class A | Add +5.3% | 0.14% | +0.01 |
| FICO Fair Isaac Corp. | Add +25.5% | 0.26% | +0.01 |
| GRAL Grail Inc. | Add +18.2% | 0.09% | +0.01 |
| ELF Elf Beauty Inc. | Add +50.6% | 0.05% | +0.01 |
| BBIO Bridgebio Pharma Inc. | Add +78.5% | 0.04% | +0.01 |
| PSN Parsons Corp. | Add +67.8% | 0.05% | +0.01 |
| MCK McKesson Corp. | New | 0.01% | +0.01 |
| SYNA Synaptics Inc. | Add +1.7% | 0.03% | +0.01 |
| BA The Boeing Co. | Add +30.7% | 0.13% | +0.01 |
| FRVO Fervo Energy Co. Class A | New | 0.01% | +0.01 |
| DXCM Dexcom Inc. | New | 0.01% | +0.01 |
| BMNR Bitmine Immersion Technologi | New | 0.01% | +0.01 |
| BRKR Bruker Corp. | Add +3.0% | 0.03% | +0.01 |
| BIRK Birkenstock Holding PLC | Add +52.4% | 0.02% | +0.01 |
| SAP Sap SE-Sponsored ADR | Add +534.6% | 0.01% | +0.01 |
| MDB Mongodb Inc. | Add +0.4% | 0.17% | +0.01 |
| INDI Indie Semiconductor Inc. Class A | Add +1.8% | 0.08% | +0.01 |
| RGEN Repligen Corp. | Add +37.5% | 0.03% | +0.00 |
| PVLA Palvella Therapeutics Inc. | Add +31.4% | 0.02% | +0.00 |
| WING Wingstop Inc. | New | 0.00% | +0.00 |
| NTNX Nutanix Inc. Class A | Add +3.2% | 0.09% | +0.00 |
| SEPN Septerna Inc. | Add +11.3% | 0.02% | +0.00 |
| OLLI Ollie's Bargain Outlet Holdi | Add +69.5% | 0.04% | +0.00 |
| MBLY Mobileye Global Inc. Class A | Add +6.9% | 0.02% | +0.00 |
| TOST Toast Inc. Class A | Add +41.5% | 0.01% | +0.00 |
| SN Sharkninja Inc. | Add +1.0% | 0.01% | +0.00 |
| TMHC Taylor Morrison Home Corp. | Add +47.4% | 0.00% | +0.00 |
| SVV Savers Value Village Inc. | Add +8.2% | 0.00% | +0.00 |
| ALGT Allegiant Travel Co. | Add +2.1% | 0.00% | +0.00 |
| ALLO Allogene Therapeutics Inc. | Add +56.6% | 0.02% | 0.00 |
| WMG Warner Music Group Corp. Class A | Add +28.5% | 0.00% | 0.00 |
| DKS Dick's Sporting Goods Inc. | Add +6.0% | 0.01% | −0.00 |
| APP AppLovin Corp. Class A | Add +0.8% | 0.05% | −0.00 |
| THG Hanover Insurance Group Inc./ | Add +0.4% | 0.02% | −0.00 |
| HPQ HP Inc. | Add +15.9% | 0.32% | −0.00 |
| BAC Bank of America Corp. | Add +11.6% | 0.10% | −0.00 |
| GFL GFL Environmental Inc.-Sub VT | Add +36.4% | 0.02% | −0.00 |
| PFGC Performance Food Group Co. | Add +0.8% | 0.18% | −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 |