PRIMECAP MANAGEMENT CO/CA/ — 13F Holdings & Portfolio
CIK 763212 · latest 13F-HR filed 2026-05-11
PRIMECAP MANAGEMENT CO/CA/ manages $127.01B in 13F-reported U.S. long-equity assets across 320 reported positions as of its 2026-03-31 13F-HR filing. Its largest disclosed positions are LLY (6.68%), MU (5.82%), GOOGL (3.39%). Quarter over quarter (versus its 2025-12-31 filing) the fund opened 9 new positions, exited 8, added to 101, and trimmed 143.
AUM is the long-equity portion reported on Form 13F-HR. Excludes short positions, cash, foreign holdings, and non-13F assets. For informational purposes only — not investment advice.
$127.01B
Long-equity book
320
Distinct positions
2026-03-31
Filed 2026-05-11
+9 / −8 / ↑101 / ↓143
vs 2025-12-31
| Name | Title / Status | Ownership | Type |
|---|
Top Adds (vs prior quarter)
- INTEL CORP$534.1M +19.0%
- FEDEX CORP$498.4M +20.3%
- CONOCOPHILLIPS$444.7M +41.0%
- ROSS STORES INC$327.9M +19.8%
- NEXTPOWER INC$209.5M +34.6%
Top Trims
- ELI LILLY & CO-$1.47B -14.8%
- BOSTON SCIENTIFIC CORP-$923.8M -31.2%
- MICROSOFT CORP-$835.3M -23.7%
- TESLA INC-$563.9M -19.8%
- ALIBABA GROUP HLDG LTD-$432.8M -15.6%
New Positions
- ASTRAZENECA PLC$3.59B
- WASTE MGMT INC DEL$63.8M
- L3HARRIS TECHNOLOGIES INC$49.4M
- PALVELLA THERAPEUTICS INC NE$24.3M
- FIFTH THIRD BANCORP$9.1M
Exited Positions
- ASTRAZENECA PLC$3.39B
- CYBERARK SOFTWARE LTD$13.6M
- COMERICA INC$10.9M
- SOLSTICE ADVANCED MATLS INC$5.8M
- EXACT SCIENCES CORP$3.5M
Rows tagged Call or Put are options positions, not stock. Per SEC Form 13F-HR, Value shows the notional value of the underlying (shares covered × underlying price), not the option premium. Shares is the number of underlying shares covered (divide by 100 for contract count).
| # | Issuer | Symbol | CUSIP | Value | Weight | Shares | Type |
|---|---|---|---|---|---|---|---|
| 1 | ELI LILLY & CO | LLY | 532457108 | $8.48B | 6.68% | 9,223,432 | SH |
| 2 | MICRON TECHNOLOGY INC | MU | 595112103 | $7.39B | 5.82% | 21,874,204 | SH |
| 3 | ALPHABET INC | GOOGL | 02079K305 | $4.31B | 3.39% | 14,987,459 | SH |
| 4 | ASTRAZENECA PLC | AZN | G0593M107 | $3.59B | 2.83% | 18,213,708 | SH |
| 5 | KLA CORP | KLAC | 482480100 | $3.59B | 2.83% | 2,437,647 | SH |
| 6 | INTEL CORP | INTC | 458140100 | $3.34B | 2.63% | 75,761,968 | SH |
| 7 | AMGEN INC | AMGN | 031162100 | $3.12B | 2.46% | 8,874,129 | SH |
| 8 | NVIDIA CORPORATION | NVDA | 67066G104 | $3.00B | 2.36% | 17,188,230 | SH |
| 9 | FEDEX CORP | FDX | 31428X106 | $2.96B | 2.33% | 8,303,010 | SH |
| 10 | BIOGEN INC | BIIB | 09062X103 | $2.71B | 2.13% | 14,757,607 | SH |
| 11 | MICROSOFT CORP | MSFT | 594918104 | $2.69B | 2.12% | 7,264,560 | SH |
| 12 | AMAZON COM INC | AMZN | 023135106 | $2.52B | 1.99% | 12,107,038 | SH |
| 13 | ALIBABA GROUP HLDG LTD | BABA | 01609W102 | $2.35B | 1.85% | 18,722,316 | SH |
| 14 | TESLA INC | TSLA | 88160R101 | $2.28B | 1.79% | 6,125,520 | SH |
| 15 | SCHWAB CHARLES CORP | SCHW | 808513105 | $2.20B | 1.73% | 23,441,915 | SH |
| 16 | BOSTON SCIENTIFIC CORP | BSX | 101137107 | $2.04B | 1.61% | 32,529,774 | SH |
| 17 | ROSS STORES INC | ROST | 778296103 | $1.99B | 1.56% | 9,170,030 | SH |
| 18 | TEXAS INSTRS INC | TXN | 882508104 | $1.87B | 1.48% | 9,654,766 | SH |
| 19 | SOUTHWEST AIRLS CO | LUV | 844741108 | $1.77B | 1.39% | 47,069,495 | SH |
| 20 | FLEXTRONICS INTL LTD | FLEX | Y2573F102 | $1.66B | 1.31% | 25,383,448 | SH |
| 21 | ALPHABET INC | GOOG | 02079K107 | $1.64B | 1.29% | 5,720,910 | SH |
| 22 | TJX COS INC NEW | TJX | 872540109 | $1.53B | 1.21% | 9,588,920 | SH |
| 23 | CONOCOPHILLIPS | COP | 20825C104 | $1.53B | 1.20% | 11,579,265 | SH |
| 24 | BRISTOL-MYERS SQUIBB CO | BMY | 110122108 | $1.52B | 1.19% | 24,985,149 | SH |
| 25 | BEONE MEDICINES LTD | ONC | 07725L102 | $1.48B | 1.16% | 4,975,181 | SH |
| 26 | UNITED AIRLS HLDGS INC | UAL | 910047109 | $1.45B | 1.14% | 15,750,610 | SH |
| 27 | GSK PLC | GSK | 37733W204 | $1.39B | 1.10% | 25,204,538 | SH |
| 28 | RAYMOND JAMES FINL INC | RJF | 754730109 | $1.35B | 1.07% | 9,347,172 | SH |
| 29 | BAIDU INC | BIDU | 056752108 | $1.23B | 0.97% | 11,056,800 | SH |
| 30 | VISA INC | V | 92826C839 | $1.23B | 0.97% | 4,060,201 | SH |
| 31 | SONY GROUP CORP | SONY | 835699307 | $1.21B | 0.95% | 58,530,830 | SH |
| 32 | DELTA AIR LINES INC | DAL | 247361702 | $1.17B | 0.92% | 17,548,567 | SH |
| 33 | NOVARTIS AG | NVS | 66987V109 | $1.16B | 0.91% | 7,567,354 | SH |
| 34 | ADOBE INC | ADBE | 00724F101 | $1.15B | 0.91% | 4,730,846 | SH |
| 35 | ELANCO ANIMAL HEALTH INC | ELAN | 28414H103 | $1.10B | 0.86% | 45,840,956 | SH |
| 36 | JPMORGAN CHASE & CO | JPM | 46625H100 | $1.00B | 0.79% | 3,403,527 | SH |
| 37 | ANALOG DEVICES INC | ADI | 032654105 | $997.7M | 0.79% | 3,136,089 | SH |
| 38 | THERMO FISHER SCIENTIFIC INC | TMO | 883556102 | $974.5M | 0.77% | 1,982,531 | SH |
| 39 | NETAPP INC | NTAP | 64110D104 | $927.4M | 0.73% | 9,057,455 | SH |
| 40 | NORTHERN TR CORP | NTRS | 665859104 | $914.0M | 0.72% | 6,549,037 | SH |
| 41 | JABIL INC | JBL | 466313103 | $871.6M | 0.69% | 3,281,169 | SH |
| 42 | ORACLE CORP | ORCL | 68389X105 | $834.7M | 0.66% | 5,674,130 | SH |
| 43 | NEXTPOWER INC | NXT | 65290E101 | $815.0M | 0.64% | 6,760,847 | SH |
| 44 | BIOMARIN PHARMACEUTICAL INC | BMRN | 09061G101 | $801.8M | 0.63% | 14,194,005 | SH |
| 45 | AECOM | ACM | 00766T100 | $733.4M | 0.58% | 8,647,073 | SH |
| 46 | ROYAL CARIBBEAN GROUP | RCL | V7780T103 | $645.8M | 0.51% | 2,346,921 | SH |
| 47 | IDEX CORP | IEX | 45167R104 | $626.1M | 0.49% | 3,302,937 | SH |
| 48 | CATERPILLAR INC | CAT | 149123101 | $618.0M | 0.49% | 872,260 | SH |
| 49 | WELLS FARGO & CO | WFC | 949746101 | $614.8M | 0.48% | 7,723,102 | SH |
| 50 | DISNEY WALT CO | DIS | 254687106 | $600.9M | 0.47% | 6,235,127 | SH |
| Period | Filed | AUM | Holdings | Accession |
|---|---|---|---|---|
| 2026-03-31 | 2026-05-11 | $127.01B | 320 | 0000763212-26-000016 |
| 2025-12-31 | 2026-02-11 | $132.11B | 319 | 0000763212-26-000012 |
| 2025-09-30 | 2025-11-12 | $130.57B | 327 | 0000763212-25-000005 |