PRIMECAP MANAGEMENT CO/CA/
Sector Allocation
- Technology48.2%$81.4B
- Healthcare21.1%$35.8B
- Industrials11.5%$19.5B
- Consumer Discretionary7.8%$13.2B
- Financials6.8%$11.4B
- Materials1.6%$2.8B
- Energy1.3%$2.1B
- Communication Services0.8%$1.4B
- Consumer Staples0.7%$1.2B
- Utilities0.1%$166.8M
AUM History
13fpro.ai/research/fund/primecap-management-co-ca-763212
Conviction and streaks
Concentrating · top 10 = 42.6%From the fund's last 12 quarters of 13F filings: positions held longest at size, and names it added to or trimmed several quarters running.
Largest positions — Q2 2026
MU
$22.2BLLY
$11.0BINTC
$10.5BKLAC
$6.2BGOOGL
$5.3BFLEX
$3.8BAZN
$3.4BNVDA
$3.4BBIIB
$3.3BAMZN
$2.9BMSFT
$2.7BTSLA
$2.6BFDX
$2.6BTXN
$2.5BLUV
$2.5BAMGN
$2.4BSCHW
$2.3BUAL
$2.2BBSX
$2.2BROST
$1.9B
Top 20 stock positions. Options are left out: 13F reports them at the underlying's value.
13fpro.ai/research/fund/primecap-management-co-ca-763212
PRIMECAP MANAGEMENT CO/CA/ 13F holdings — Q2 2026
$169.1B portfolio (+33.1% QoQ) · 324 holdings · Q2 2026 13F · top 10 are 43% of the stock portfolio
$22.2B
13.1% of stocks
-12%This quarter-7.0%Since filed7+ qtrsHeld$11.0B
6.5% of stocks
-0.5%This quarter+8.4%Since filed7+ qtrsHeld$10.5B
6.2% of stocks
-0.7%This quarter-11.7%Since filed7+ qtrsHeld$6.2B
3.7% of stocks
+742%This quarter-26.8%Since filed7+ qtrsHeld$5.3B
3.1% of stocks
-0.9%This quarter-8.5%Since filed7+ qtrsHeld$3.8B
2.2% of stocks
-8%This quarter-39.0%Since filed7+ qtrsHeldAIQualityAI quality score is Pro: unlock with a free trialEst. buyEstimated buy price is Pro: unlock with a free trialTrimmed 6 qtrs in a row$3.4B
2.0% of stocks
-0.7%This quarter+10.0%Since filed7+ qtrsHeld$3.4B
2.0% of stocks
-0.6%This quarter-4.1%Since filed7+ qtrsHeld$3.3B
1.9% of stocks
+3%This quarter+20.2%Since filed7+ qtrsHeld$2.9B
1.7% of stocks
-1%This quarter-5.2%Since filed7+ qtrsHeldAIQualityAI quality score is Pro: unlock with a free trialEst. buyEstimated buy price is Pro: unlock with a free trialTrimmed 2 qtrs in a row
All holdings — PRIMECAP MANAGEMENT CO/CA/ (Q2 2026)
324 disclosed positions from the Form 13F-HR on SEC EDGAR, with quarter-over-quarter share changes. Largest by value first; the ten above are not repeated.
| # | Company | Held | Source | |||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 11 | MICROSOFT CORP | Technology | $2.7B | 1.6% | 7.14M | -2% | 7+ qtrs | AI quality score is Pro: unlock with a free trial | 13F | |
| 12 | Tesla, Inc. | Consumer Discretionary | $2.6B | 1.5% | 6.10M | -0.4% | 7+ qtrs | AI quality score is Pro: unlock with a free trial | 13F | |
| 13 | FEDEX CORP | Industrials | $2.6B | 1.5% | 8.16M | -2% | 7+ qtrsTrimmed 6 qtrs in a row | AI quality score is Pro: unlock with a free trial | 13F | |
| 14 | TEXAS INSTRUMENTS INC | Technology | $2.5B | 1.5% | 8.51M | -12% | 7+ qtrsTrimmed 6 qtrs in a row | AI quality score is Pro: unlock with a free trial | 13F | |
| 15 | SOUTHWEST AIRLINES CO | Industrials | $2.5B | 1.5% | 48.80M | +4% | 7+ qtrs | AI quality score is Pro: unlock with a free trial | 13F | |
| 16 | AMGEN INC | Healthcare | $2.4B | 1.4% | 6.76M | -24% | 7+ qtrs | AI quality score is Pro: unlock with a free trial | 13F | |
| 17 | SCHWAB CHARLES CORP | Financials | $2.3B | 1.4% | 25.12M | +7% | 7+ qtrs | AI quality score is Pro: unlock with a free trial | 13F | |
| 18 | United Airlines Holdings, Inc. | Industrials | $2.2B | 1.3% | 16.46M | +5% | 7+ qtrs | AI quality score is Pro: unlock with a free trial | 13F | |
| 19 | BOSTON SCIENTIFIC CORP | Healthcare | $2.2B | 1.3% | 50.52M | +55% | 7+ qtrsAdded 2 qtrs in a row | AI quality score is Pro: unlock with a free trial | 13F | |
| 20 | ROSS STORES, INC. | Consumer Discretionary | $1.9B | 1.1% | 9.10M | -0.7% | 7+ qtrs | AI quality score is Pro: unlock with a free trial | 13F | |
| 21 | Alphabet Inc. | Technology | $1.9B | 1.1% | 5.40M | -6% | 7+ qtrs | AI quality score is Pro: unlock with a free trial | 13F | |
| 22 | Alibaba Group Holding Ltdadr | Consumer Discretionary | $1.8B | 1.1% | 18.61M | -0.6% | 7+ qtrs | AI quality score is Pro: unlock with a free trial | 13F | |
| 23 | DELTA AIR LINES, INC. | Industrials | $1.6B | 1.0% | 17.52M | -0.2% | 7+ qtrs | AI quality score is Pro: unlock with a free trial | 13F | |
| 24 | VISA INC. | Financials | $1.5B | 0.9% | 4.27M | +5% | 7+ qtrsAdded 2 qtrs in a row | AI quality score is Pro: unlock with a free trial | 13F | |
| 25 | BRISTOL MYERS SQUIBB CO | Healthcare | $1.4B | 0.8% | 24.92M | -0.2% | 7+ qtrs | AI quality score is Pro: unlock with a free trial | 13F | |
| 26 | $TJX | TJX COMPANIES INC /DE/ | Consumer Discretionary | $1.4B | 0.8% | 9.48M | -1% | |||
| 27 | $ONC | BeOne Medicines Ltd. | Healthcare | $1.4B | 0.8% | 5.01M | +0.7% | |||
| 28 | $RJF | RAYMOND JAMES FINANCIAL INC | Financials | $1.4B | 0.8% | 9.24M | -1% | |||
| 29 | $NTAP | NetApp, Inc. | Technology | $1.4B | 0.8% | 9.02M | -0.5% | |||
| 30 | $GSK | GSK plc | Healthcare | $1.3B | 0.8% | 25.18M | -0.1% | |||
| 31 | $AAL | American Airlines Group Inc. | Industrials | $1.3B | 0.8% | 70.73M | +44% | |||
| 32 | $BIDU | Baidu, Inc. | Technology | $1.3B | 0.7% | 11.01M | -0.4% | |||
| 33 | $ADI | ANALOG DEVICES INC | Technology | $1.2B | 0.7% | 3.13M | -0.2% | |||
| 34 | $JBL | JABIL INC | Technology | $1.2B | 0.7% | 3.17M | -3% | |||
| 35 | $COP | CONOCOPHILLIPS | Energy | $1.2B | 0.7% | 11.59M | +0.1% | |||
| 36 | $SONY | Sony Group Corp | Technology | $1.2B | 0.7% | 59.60M | +2% | |||
| 37 | $ELAN | Elanco Animal Health Inc | Healthcare | $1.1B | 0.7% | 45.45M | -0.9% | |||
| 38 | $JPM | JPMORGAN CHASE & CO | Financials | $1.1B | 0.7% | 3.38M | -0.6% | |||
| 39 | $ADBE | ADOBE INC. | Technology | $1.1B | 0.6% | 5.23M | +10% | |||
| 40 | $NTRS | NORTHERN TRUST CORP | Financials | $1.1B | 0.6% | 6.10M | -7% | |||
| 41 | $GLW | CORNING INC /NY | Materials | $1.1B | 0.6% | 4.13M | -0.1% | |||
| 42 | $NVS | NOVARTIS AG | Healthcare | $1.0B | 0.6% | 6.59M | -13% | |||
| 43 | $TMO | THERMO FISHER SCIENTIFIC INC. | Healthcare | $993.8M | 0.6% | 1.98M | -0.0% | |||
| 44 | $CAT | CATERPILLAR INC | Industrials | $928.3M | 0.6% | 872K | -0.1% | |||
| 45 | $MRVL | Marvell Technology, Inc. | Technology | $821.6M | 0.5% | 2.76M | -7% | |||
| 46 | $BMRN | BIOMARIN PHARMACEUTICAL INC | Healthcare | $812.0M | 0.5% | 14.19M | -0.0% | |||
| 47 | $NXT | Nextpower Inc. | Technology | $796.9M | 0.5% | 6.69M | -1% | |||
| 48 | $ORCL | ORACLE CORP | Technology | $789.4M | 0.5% | 5.39M | -5% | |||
| 49 | $HPE | Hewlett Packard Enterprise Co | Technology | $773.2M | 0.5% | 17.14M | -0.5% | |||
| 50 | $AMAT | APPLIED MATERIALS INC /DE | Technology | $754.0M | 0.5% | 1.04M | -11% | |||
| 51 | $IEX | IDEX CORP /DE/ | Industrials | $749.0M | 0.4% | 3.30M | -0.1% | |||
| 52 | $ASML | ASML HOLDING NV | Technology | $699.4M | 0.4% | 352K | -0.4% | |||
| 53 | $DIS | Walt Disney Co | Communication Services | $675.8M | 0.4% | 7.02M | +13% | |||
| 54 | $RCL | ROYAL CARIBBEAN CRUISES LTD | Industrials | $669.8M | 0.4% | 2.11M | -10% | |||
| 55 | $XMTR | Xometry, Inc. | Industrials | $640.5M | 0.4% | 6.64M | +2% | |||
| 56 | $ILMN | ILLUMINA, INC. | Healthcare | $618.0M | 0.4% | 3.51M | +70% | |||
| 57 | $ACM | AECOM | Technology | $613.3M | 0.4% | 8.79M | +2% | |||
| 58 | $FDXF | FedEx Freight Holding Company, Inc. | Industrials | $611.3M | 0.4% | 4.05M | New | |||
| 59 | $AMD | ADVANCED MICRO DEVICES INC | Technology | $608.6M | 0.4% | 1.05M | -0.2% | |||
| 60 | $J | JACOBS SOLUTIONS INC. | Industrials | $575.3M | 0.3% | 4.57M | +1% | |||
| 61 | $CSCO | CISCO SYSTEMS, INC. | Technology | $568.3M | 0.3% | 4.84M | -0.0% | |||
| 62 | $ENTG | ENTEGRIS INC | Materials | $562.1M | 0.3% | 3.13M | -0.6% | |||
| 63 | $WFC | WELLS FARGO & COMPANY/MN | Financials | $554.7M | 0.3% | 6.71M | -13% | |||
| 64 | $TDG | TransDigm Group INC | Industrials | $546.4M | 0.3% | 410K | — | |||
| 65 | $HPQ | HP INC | Technology | $546.0M | 0.3% | 24.89M | +16% | |||
| 66 | $AAPL | Apple Inc. | Technology | $509.5M | 0.3% | 1.76M | — | |||
| 67 | $ERIC | ERICSSON LM TELEPHONE CO | Technology | $464.0M | 0.3% | 41.61M | +11% | |||
| 68 | $LIN | LINDE PLC | Materials | $460.3M | 0.3% | 887K | -0.2% | |||
| 69 | $DLTR | DOLLAR TREE, INC. | Consumer Staples | $455.8M | 0.3% | 3.77M | +1% | |||
| 70 | $FICO | FAIR ISAAC CORP | Technology | $433.5M | 0.3% | 363K | +26% | |||
| 71 | $GKOS | GLAUKOS Corp | Healthcare | $425.0M | 0.3% | 3.04M | -10% | |||
| 72 | $PYPL | PayPal Holdings, Inc. | Financials | $422.1M | 0.3% | 9.78M | -3% | |||
| 73 | $CME | CME GROUP INC. | Financials | $420.6M | 0.3% | 1.90M | +5% | |||
| 74 | $MAT | MATTEL INC /DE/ | Consumer Discretionary | $409.5M | 0.2% | 29.51M | -0.6% | |||
| 75 | $USFD | US Foods Holding Corp. | Consumer Discretionary | $407.0M | 0.2% | 3.98M | +0.9% | |||
| 76 | $SNPS | SYNOPSYS INC | Technology | $399.4M | 0.2% | 895K | +9% | |||
| 77 | $META | Meta Platforms, Inc. | Technology | $399.0M | 0.2% | 708K | -9% | |||
| 78 | $MKTX | MARKETAXESS HOLDINGS INC | Financials | $397.8M | 0.2% | 3.50M | +5% | |||
| 79 | $CW | CURTISS WRIGHT CORP | Industrials | $390.1M | 0.2% | 515K | -4% | |||
| 80 | $BAH | Booz Allen Hamilton Holding Corp | Technology | $388.1M | 0.2% | 6.40M | +32% | |||
| 81 | $CVX | CHEVRON CORP | Energy | $378.8M | 0.2% | 2.29M | -0.3% | |||
| 82 | $BNY | Bank of New York Mellon Corp | Financials | $376.5M | 0.2% | 2.60M | +3% | |||
| 83 | $DHR | DANAHER CORP /DE/ | Healthcare | $359.8M | 0.2% | 1.89M | +21% | |||
| 84 | $ALB | ALBEMARLE CORP | Materials | $358.1M | 0.2% | 2.65M | -0.5% | |||
| 85 | $MRSH | MARSH & MCLENNAN COMPANIES, INC. | Financials | $357.5M | 0.2% | 2.15M | +199% | |||
| 86 | $RYTM | RHYTHM PHARMACEUTICALS, INC. | Healthcare | $351.8M | 0.2% | 3.17M | -7% | |||
| 87 | $BNTX | BioNTech SE | Healthcare | $351.0M | 0.2% | 3.77M | -0.6% | |||
| 88 | $PANW | Palo Alto Networks Inc | Technology | $347.8M | 0.2% | 1.02M | -1% | |||
| 89 | $LIVN | LivaNova PLC | Healthcare | $342.8M | 0.2% | 4.17M | -0.9% | |||
| 90 | $NFLX | NETFLIX INC | Communication Services | $342.0M | 0.2% | 4.79M | +9% | |||
| 91 | $MA | Mastercard Inc | Financials | $336.2M | 0.2% | 655K | +12% | |||
| 92 | $WDC | WESTERN DIGITAL CORP | Technology | $329.9M | 0.2% | 516K | -11% | |||
| 93 | $ZBH | ZIMMER BIOMET HOLDINGS, INC. | Healthcare | $328.6M | 0.2% | 3.82M | -2% | |||
| 94 | $C | CITIGROUP INC | Financials | $326.6M | 0.2% | 2.33M | -2% | |||
| 95 | $NSC | NORFOLK SOUTHERN CORP | Industrials | $324.9M | 0.2% | 1.03M | -0.0% | |||
| 96 | $SYY | SYSCO CORP | Consumer Discretionary | $313.5M | 0.2% | 3.75M | +1% | |||
| 97 | $EW | Edwards Lifesciences Corp | Healthcare | $308.3M | 0.2% | 3.41M | -0.4% | |||
| 98 | $PFGC | Performance Food Group Co | Consumer Staples | $305.1M | 0.2% | 2.73M | +0.8% | |||
| 99 | $INTU | INTUIT INC. | Technology | $289.7M | 0.2% | 1.11M | +4% | |||
| 100 | $MDB | MongoDB, Inc. | Technology | $284.2M | 0.2% | 846K | +0.4% | |||
| 101 | $CARR | CARRIER GLOBAL Corp | Industrials | $283.6M | 0.2% | 3.87M | +0.7% | |||
| 102 | $AVGO | Broadcom Inc. | Technology | $278.3M | 0.2% | 737K | -0.9% | |||
| 103 | $FORM | FORMFACTOR INC | Technology | $270.3M | 0.2% | 1.69M | -6% | |||
| 104 | $BURL | Burlington Stores, Inc. | Consumer Discretionary | $266.4M | 0.2% | 841K | +6% | |||
| 105 | $AMTM | Amentum Holdings, Inc. | Industrials | $253.9M | 0.1% | 12.29M | +2% | |||
| 106 | $CVS | CVS HEALTH Corp | Healthcare | $246.8M | 0.1% | 2.39M | -0.4% | |||
| 107 | $SPCX | SPACE EXPLORATION TECHNOLOGIES CORP | Technology | $240.5M | 0.1% | 1.41M | New | |||
| 108 | $TER | TERADYNE, INC | Technology | $235.1M | 0.1% | 486K | -12% | |||
| 109 | $GTLB | Gitlab Inc. | Technology | $234.6M | 0.1% | 7.68M | +5% | |||
| 110 | $UPS | UNITED PARCEL SERVICE INC | Industrials | $230.7M | 0.1% | 2.15M | — | |||
| 111 | $KMX | CARMAX INC | Consumer Discretionary | $230.5M | 0.1% | 4.36M | +0.0% | |||
| 112 | $BA | BOEING CO | Industrials | $225.1M | 0.1% | 1.04M | +31% | |||
| 113 | $PGR | PROGRESSIVE CORP/OH/ | Financials | $219.2M | 0.1% | 1.00M | -0.2% | |||
| 114 | $SYK | STRYKER CORP | Healthcare | $213.4M | 0.1% | 678K | +29% | |||
| 115 | $UNP | UNION PACIFIC CORP | Industrials | $211.0M | 0.1% | 776K | -6% | |||
| 116 | $EBAY | EBAY INC | Consumer Discretionary | $209.4M | 0.1% | 1.87M | -0.2% | |||
| 117 | $OKTA | Okta, Inc. | Technology | $206.9M | 0.1% | 1.52M | -11% | |||
| 118 | $KEYS | Keysight Technologies, Inc. | Technology | $206.2M | 0.1% | 589K | -0.3% | |||
| 119 | $EOG | EOG RESOURCES INC | Energy | $205.2M | 0.1% | 1.58M | -1% | |||
| 120 | $TRMB | TRIMBLE INC. | Technology | $200.4M | 0.1% | 3.92M | -0.1% | |||
| 121 | $AME | AMETEK INC/ | Industrials | $199.2M | 0.1% | 823K | — | |||
| 122 | $OLED | UNIVERSAL DISPLAY CORP \PA\ | Technology | $190.1M | 0.1% | 2.20M | +0.4% | |||
| 123 | $FLUT | Flutter Entertainment plc | Technology | $182.5M | 0.1% | 1.79M | -0.0% | |||
| 124 | $STX | Seagate Technology Holdings plc | Technology | $182.2M | 0.1% | 189K | -18% | |||
| 125 | $MOG-A | MOOG INC. | Industrials | $181.6M | 0.1% | 428K | -1% | |||
| 126 | $A | AGILENT TECHNOLOGIES, INC. | Healthcare | $176.3M | 0.1% | 1.33M | -0.5% | |||
| 127 | $BAC | BANK OF AMERICA CORP /DE/ | Financials | $175.7M | 0.1% | 3.08M | +12% | |||
| 128 | $ALK | ALASKA AIR GROUP, INC. | Industrials | $168.5M | 0.1% | 3.23M | -0.7% | |||
| 129 | $XPEV | XPENG INC. | Consumer Discretionary | $165.7M | 0.1% | 12.52M | -2% | |||
| 130 | $SPOT | Spotify Technology S.A. | Communication Services | $165.3M | 0.1% | 360K | +8% | |||
| 131 | $DELL | Dell Technologies Inc. | Technology | $164.7M | 0.1% | 382K | +2% | |||
| 132 | $XNCR | Xencor Inc | Healthcare | $163.9M | 0.1% | 10.18M | -2% | |||
| 133 | $CCL | Carnival Corp Ltd. | Industrials | $153.2M | 0.1% | 5.36M | — | |||
| 134 | $CIEN | CIENA CORP | Technology | $151.1M | 0.1% | 308K | -30% | |||
| 135 | $JBHT | HUNT J B TRANSPORT SERVICES INC | Industrials | $149.8M | 0.1% | 518K | — | |||
| 136 | $PM | Philip Morris International Inc. | Consumer Staples | $149.1M | 0.1% | 824K | -5% | |||
| 137 | $GRAL | GRAIL, Inc. | Healthcare | $148.8M | 0.1% | 2.18M | +18% | |||
| 138 | $NTNX | Nutanix, Inc. | Technology | $148.7M | 0.1% | 2.92M | +3% | |||
| 139 | $Q | Qnity Electronics, Inc. | Technology | $148.0M | 0.1% | 906K | -7% | |||
| 140 | $OTIS | Otis Worldwide Corp | Industrials | $147.2M | 0.1% | 2.06M | -2% | |||
| 141 | $INDI | indie Semiconductor, Inc. | Technology | $142.0M | 0.1% | 31.62M | +2% | |||
| 142 | $WHR | WHIRLPOOL CORP /DE/ | Technology | $141.8M | 0.1% | 3.60M | -4% | |||
| 143 | $GD | GENERAL DYNAMICS CORP | Industrials | $137.6M | 0.1% | 388K | -0.1% | |||
| 144 | $LYV | Live Nation Entertainment, Inc. | Communication Services | $133.2M | 0.1% | 727K | -0.1% | |||
| 145 | $ALKS | Alkermes plc. | Healthcare | $132.5M | 0.1% | 2.53M | -0.4% | |||
| 146 | $EVR | Evercore Inc. | Financials | $128.4M | 0.1% | 376K | +6% | |||
| 147 | $ROK | ROCKWELL AUTOMATION, INC | Industrials | $125.9M | 0.1% | 254K | -0.1% | |||
| 148 | $WSC | WillScot Holdings Corp | Industrials | $122.8M | 0.1% | 4.25M | -0.5% | |||
| 149 | $XPO | XPO, Inc. | Industrials | $116.7M | 0.1% | 568K | — | |||
| 150 | $ADSK | Autodesk, Inc. | Technology | $116.7M | 0.1% | 600K | -0.5% |
What changed in Q2 2026
Against the previous quarter's 13F: 10 new, 84 added to, 179 trimmed, 6 sold out. Share-count changes; largest moves by dollar size first.
New positions (10)
$FDXFFedEx Freight Holding Company, Inc.$611.3M
first bought this quarter
$SPCXSPACE EXPLORATION TECHNOLOGIES CORP$240.5Mfirst bought this quarter
$DVNDEVON ENERGY CORP/DE$64.9M
first bought this quarter
$FHNFIRST HORIZON CORP$57.1M
first bought this quarter
$HONAHoneywell Aerospace Inc.$54.0M
first bought this quarter
$MCKMCKESSON CORP$15.1M
first bought this quarter
+4 more in the Excel export
Added to (84)
now $6.2B · held 7+ qtrs
now $2.2B · held 7+ qtrs, 2 adds in a row
$AALAmerican Airlines Group Inc.+44%
now $1.3B · held 7+ qtrs
$ILMNILLUMINA, INC.+70%
now $618.0M · held 7+ qtrs, 3 adds in a row
$MRSHMARSH & MCLENNAN COMPANIES, INC.+199%
now $357.5M · held 7+ qtrs, 2 adds in a row
now $2.3B · held 7+ qtrs
+78 more in the Excel export
Trimmed (179)
now $22.2B · held 7+ qtrs, 5 trims in a row
now $2.4B · held 7+ qtrs
now $2.5B · held 7+ qtrs, 6 trims in a row
now $3.8B · held 7+ qtrs, 6 trims in a row
$DDDuPont de Nemours, Inc.-74%
now $70.7M
$GSGOLDMAN SACHS GROUP INC-99%
now $1.1M
+173 more in the Excel export
Holdings by quarter
Every 13F PRIMECAP MANAGEMENT CO/CA/ has filed, 41 earlier quarters. Pick one to see what it held then.
Is it too late to follow PRIMECAP MANAGEMENT?
Q2 2026 13F filed with the SEC on Aug 14, 2026. Prices are closing prices as of Oct 26, 2026.
Average quality of PRIMECAP MANAGEMENT's top 20 holdings: 75/100 (our AI quality score, weighted by position size; 18 of the 20 are scored)
Top 10 since filing
-6.6%
Value-weighted move of the 10 largest stock positions
Turnover
3%
Last quarter; 10% over the last 4
Top 10 weight
43%
Share of the stock portfolio in its 10 largest positions
Held 4+ quarters
99%
Share of portfolio value in positions held a year or more
Highest-quality names it owns(among its 100 largest positions)
The 8 highest-scoring companies in this portfolio are a Pro feature.
How these are measured
- Moves since the quarter-end and since the filing date use our own daily closing prices, from the close on (or just before) each date to the latest close.
- Turnover is the lesser of shares bought or sold in a quarter, valued at the quarter-end prices in the 13F, divided by the average of the two quarters' stock portfolio values.
- Quarters held and add/trim streaks count back only through quarters whose filed holdings add up to the filing's own cover-page total (back to Q4 2024 for this fund). A change counts as an add or a trim when the split-adjusted share count moves by more than 1%.
- Estimate, not the fund's reported cost. For each quarter in the current holding period in which the fund's share count rose (split-adjusted), we take that quarter's average daily close and weight it by the shares added; sales do not change an average cost. Quarters where the stock's price history and the 13F's own implied price disagree by more than 2x are left out.
- Put and call option rows report the value of the underlying shares, not a position the fund paid for, so they are left out of all of the above.
Portfolio Overview
PRIMECAP MANAGEMENT CO/CA/ disclosed 324 positions worth $169.1B in its Form 13F-HR for Q2 2026, led by $MU (MICRON TECHNOLOGY INC) at 13.1% of the equity portfolio, followed by $LLY and $INTC. During the quarter the fund opened 10 new positions and exited 6 — including a new stake in $FDXF and a full exit from $CTRA. The portfolio is most concentrated in Technology (48.2% of disclosed assets). All figures are sourced directly from PRIMECAP MANAGEMENT CO/CA/’s Form 13F-HR filing with the SEC under CIK 763212.
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