PRIMECAP MANAGEMENT CO/CA/

CIK

763212

Location

PASADENA, CA

Portfolio Value

Mega $169,106,414,515

Diversification

Diversified

Filing Date

Global Rank

#59 / 8,675 ▲ 8

Top Industry

Semiconductors 24.8%

3Y Alpha vs SPY

+25.7%

Period ended 2 months ago

Filed Aug 14, 2026 · 15d

26 quarters · since Mar 2020

Clone Performance

Aug 2023–Aug 2026 · vs SPY

Hypothetical growth of buying every stock this filer reported holding, rebalancing on each filing and indexed to the same start. Option positions cannot be bought this way and are left out.

Cloned portfolio

+200.8%

SPY

+71.3%

Annualised alpha

+24.7%

Max drawdown

−21.9%

Estimate. 13F holdings are quarter-lagged, so the clone rebalances about 45 days after each period end — when the filing becomes public — and it excludes option and short positions. Returns use comparable raw closes and exclude dividends. Captured split ratios restate closes onto one basis; only an unusable ratio can exclude earlier closes for that listing. It tracks 100% of reported value on average across 13 quarters. Past performance does not predict future results.

Portfolio Concentration

323 tracked positions · as of Jun 30, 2026 · Δ vs Mar 31, 2026

Top Position

13.1%

+6.4 pts

Top 5

33.8%

+10.9 pts

Top 10

43.7%

+8.9 pts

HHI

344

Diversified+143

Portfolio Trend

26 quarters · across all stocks

Sector Breakdown

As of Jun 30, 2026

Sector	% Portfolio	Value	Positions
Technology	42.8%	$72,333,939,009	79
Healthcare	21.1%	$35,720,360,297	57
Industrials	11.7%	$19,822,984,062	56
Consumer Cyclical	8.2%	$13,803,769,678	44
Financial Services	6.8%	$11,440,471,278	28
Communication Services	6.2%	$10,456,859,913	16
Energy	1.3%	$2,196,972,061	13
Consumer Defensive	1.2%	$1,950,535,423	14
Basic Materials	0.7%	$1,203,099,687	11
Real Estate	0.1%	$110,766,689	2
Utilities	0.0%	$66,656,418	3

Last Quarter's Activity

Export CSV

Jun 30, 2026 vs Mar 31, 2026

Added To

Positions the filer increased

25 positions

Ticker	Company	Δ Shares	Shares	Value
AAL	American Airlines Group Inc.	+21,743,000	70,732,954	$1,278,144,478
KLAC	Kla Corp	+18,099,083	20,536,730	$6,196,136,808
BSX	Boston Scientific Corp	+17,991,140	50,520,914	$2,156,232,609
ALLO	Allogene Therapeutics, Inc.	+4,743,600	13,123,440	$27,296,755
ERIC	Ericsson Lm Telephone Co	+4,109,600	41,613,613	$463,991,784
HPQ	Hp Inc	+3,415,700	24,885,325	$545,984,030
LUV	Southwest Airlines Co	+1,728,230	48,797,725	$2,509,179,019
SCHW	Schwab Charles Corp	+1,678,980	25,120,895	$2,317,904,981
BAH	Booz Allen Hamilton Holding Corp	+1,567,846	6,397,644	$388,145,061
ILMN	Illumina, Inc.	+1,447,350	3,514,649	$617,980,733
MRSH	Marsh & Mclennan Companies, Inc.	+1,427,525	2,145,025	$357,511,316
SONY	Sony Group Corp	+1,072,400	59,603,230	$1,195,640,793
CVNA	Carvana Co.	+790,100	987,625	$65,005,477
DIS	Walt Disney Co	+785,830	7,020,957	$675,767,111
UAL	United Airlines Holdings, Inc.	+711,020	16,461,630	$2,238,617,063
PSN	Parsons Corp	+691,700	1,712,100	$89,696,919
INDI	indie Semiconductor, Inc.	+557,341	31,623,647	$141,990,175
WVE	Wave Life Sciences, Inc.	+521,670	5,354,622	$31,110,353
ADBE	Adobe Inc.	+496,293	5,227,139	$1,071,668,037
BBIO	BridgeBio Pharma, Inc.	+446,800	1,015,980	$75,670,190
XEL	Xcel Energy Inc	+429,300	496,300	$39,852,890
BIIB	Biogen Inc.	+396,999	15,154,606	$3,274,304,172
GTLB	Gitlab Inc.	+384,300	7,683,350	$234,572,675
NFLX	Netflix Inc	+378,675	4,790,465	$342,039,201
OLLI	Ollie's Bargain Outlet Holdings, Inc.	+359,300	875,890	$67,338,423
No positions match the current search.

Trimmed

Positions the filer reduced

25 positions

Ticker	Company	Δ Shares	Shares	Value
MU	Micron Technology Inc	−2,656,968	19,217,236	$22,182,263,342
AMGN	Amgen Inc	−2,117,167	6,756,962	$2,446,831,079
DOW	Dow Inc.	−2,103,130	2,251,432	$61,599,179
GTM	ZoomInfo Technologies Inc.	−2,041,412	1,183,552	$3,467,807
FLEX	Flex Ltd.	−2,024,573	23,358,875	$3,785,772,871
NWL	Newell Brands Inc.	−1,661,690	5,863,700	$36,003,118
DD	DuPont de Nemours, Inc.	−1,475,666	521,493	$70,735,310
TXN	Texas Instruments Inc	−1,139,777	8,514,989	$2,538,062,771
WFC	Wells Fargo & Company/Mn	−1,011,080	6,712,022	$554,681,498
NVS	Novartis AG	−975,230	6,592,124	$1,033,117,673
INTC	Intel Corp	−511,010	75,250,958	$10,507,291,265
TTD	Trade Desk, Inc.	−500,150	732,455	$13,242,786
QCOM	Qualcomm Inc/De	−466,337	239,250	$44,211,007
DSGX	Descartes Systems Group Inc	−449,665	728,775	$50,460,381
GOOGL	Alphabet Inc.	−449,540	20,258,829	$7,218,085,516
NFE	New Fortress Energy Inc.	−449,200	91,100	$33,069
NTRS	Northern Trust Corp	−448,295	6,100,742	$1,060,552,989
AUR	Aurora Innovation, Inc.	−407,830	9,398,280	$64,096,269
ELAN	Elanco Animal Health Inc	−395,944	45,445,012	$1,118,401,745
ARLO	Arlo Technologies, Inc.	−376,183	1,942,330	$26,182,608
GKOS	GLAUKOS Corp	−329,923	3,040,705	$424,968,930
ORCL	Oracle Corp	−287,900	5,386,230	$789,352,006
IMAX	Imax Corp	−261,902	273,500	$10,901,710
PYPL	PayPal Holdings, Inc.	−251,320	9,775,170	$422,091,840
RYTM	Rhythm Pharmaceuticals, Inc.	−248,656	3,168,853	$351,837,748
No positions match the current search.

New Positions

Positions the filer opened this quarter

10 positions

Ticker	Company	Shares	Value
FDXF	FedEx Freight Holding Company, Inc.	4,048,660	$611,347,660
SPCX	Space Exploration Technologies Corp	1,407,762	$240,530,215
DVN	Devon Energy Corp/De	1,571,690	$64,942,230
FHN	First Horizon Corp	2,227,100	$57,102,844
HONA	Honeywell Aerospace Inc.	244,100	$53,965,628
MCK	Mckesson Corp	19,990	$15,104,444
FRVO	Fervo Energy Co	475,800	$13,907,634
DXCM	Dexcom Inc	192,000	$12,931,200
BMNR	Bitmine Immersion Technologies, Inc.	910,100	$12,113,431
WING	Wingstop Inc.	36,100	$6,260,101
No positions match the current search.

Sold Out

Positions the filer fully exited

6 positions

Ticker	Company	Shares	Value
FITB	Fifth Third Bancorp	196,260	$9,118,239
HCAT	Health Catalyst, Inc.	340,418	$432,330
MDT	Medtronic plc	2,440	$211,426
—		585,400	$0
—		2,289,750	$0
—		19,500	$0
No positions match the current search.

Portfolio Positions

Compact Export CSV View 13F filing

323 tracked positions · $169,106,414,515 total · filing declares 324 positions · $169,112,441,771 · as of Jun 30, 2026

All sectors Basic Materials Communication Services Consumer Cyclical Consumer Defensive Energy Financial Services Healthcare Industrials Real Estate Technology Utilities

Showing 1–50 of 323 positions by value · page 1 of 7

Ticker	Company	Type	Shares	Δ Shares	Value (USD)	% Δ Value	% of Portfolio
MU	Micron Technology Inc Technology	Reduced	19,217,236	-2,656,968	$22,182,263,342	+200.2%	13.12%
LLY	ELI LILLY & Co Healthcare	Reduced	9,172,904	-50,528	$11,002,257,162	+29.7%	6.51%
INTC	Intel Corp Technology	Reduced	75,250,958	-511,010	$10,507,291,265	+214.3%	6.21%
GOOGL	Alphabet Inc. Communication Services	Reduced	20,258,829	-449,540	$7,218,085,516	+21.3%	4.27%
KLAC	Kla Corp Technology	Added	20,536,730	+18,099,083	$6,196,136,808	+72.6%	3.66%
FLEX	Flex Ltd. Technology	Reduced	23,358,875	-2,024,573	$3,785,772,871	+127.8%	2.24%
AZN	Astrazeneca PLC Healthcare	Reduced	18,095,178	-118,530	$3,431,207,652	−4.5%	2.03%
NVDA	Nvidia Corp Technology	Reduced	17,079,180	-109,050	$3,417,373,126	+14.0%	2.02%
BIIB	Biogen Inc. Healthcare	Added	15,154,606	+396,999	$3,274,304,172	+21.0%	1.94%
AMZN	Amazon Com Inc Consumer Cyclical	Reduced	11,962,188	-144,850	$2,851,067,887	+13.1%	1.69%
MSFT	Microsoft Corp Technology	Reduced	7,140,870	-123,690	$2,663,687,327	−0.9%	1.58%
TSLA	Tesla, Inc. Consumer Cyclical	Reduced	6,103,030	-22,490	$2,566,934,418	+12.7%	1.52%
FDX	Fedex Corp Industrials	Reduced	8,156,799	-146,211	$2,554,138,470	−13.6%	1.51%
TXN	Texas Instruments Inc Technology	Reduced	8,514,989	-1,139,777	$2,538,062,771	+35.4%	1.50%
LUV	Southwest Airlines Co Industrials	Added	48,797,725	+1,728,230	$2,509,179,019	+41.9%	1.48%
AMGN	Amgen Inc Healthcare	Reduced	6,756,962	-2,117,167	$2,446,831,079	−21.6%	1.45%
SCHW	Schwab Charles Corp Financial Services	Added	25,120,895	+1,678,980	$2,317,904,981	+5.2%	1.37%
UAL	United Airlines Holdings, Inc. Industrials	Added	16,461,630	+711,020	$2,238,617,063	+54.4%	1.32%
BSX	Boston Scientific Corp Healthcare	Added	50,520,914	+17,991,140	$2,156,232,609	+5.6%	1.28%
ROST	Ross Stores, Inc. Consumer Cyclical	Reduced	9,104,980	-65,050	$1,937,994,993	−2.4%	1.15%
BABA	Alibaba Group Holding Ltd Consumer Cyclical	Reduced	18,611,306	-111,010	$1,786,313,149	−24.0%	1.06%
DAL	Delta Air Lines, Inc. Industrials	Reduced	17,521,167	-27,400	$1,641,032,501	+40.7%	0.97%
V	Visa Inc. Financial Services	Added	4,268,491	+208,290	$1,464,476,577	+19.3%	0.87%
BMY	Bristol Myers Squibb Co Healthcare	Reduced	24,923,900	-61,249	$1,436,115,118	−5.2%	0.85%
TJX	Tjx Companies Inc /De/ Consumer Cyclical	Reduced	9,476,020	-112,900	$1,435,617,030	−6.3%	0.85%
ONC	BeOne Medicines Ltd. Healthcare	Added	5,007,931	+32,750	$1,427,110,097	−3.4%	0.84%
RJF	Raymond James Financial Inc Financial Services	Reduced	9,242,552	-104,620	$1,405,145,180	+3.8%	0.83%
NTAP	NetApp, Inc. Technology	Reduced	9,016,690	-40,765	$1,395,422,944	+50.5%	0.83%
GSK	GSK plc Healthcare	Reduced	25,182,068	-22,470	$1,320,044,004	−5.1%	0.78%
AAL	American Airlines Group Inc. Industrials	Added	70,732,954	+21,743,000	$1,278,144,478	+142.9%	0.76%
BIDU	Baidu, Inc. Communication Services	Reduced	11,010,100	-46,700	$1,258,344,329	+2.1%	0.74%
ADI	Analog Devices Inc Technology	Reduced	3,128,329	-7,760	$1,242,478,428	+24.5%	0.73%
JBL	Jabil Inc Technology	Reduced	3,167,120	-114,049	$1,220,861,417	+40.1%	0.72%
COP	Conocophillips Energy	Added	11,588,365	+9,100	$1,204,726,425	−21.2%	0.71%
SONY	Sony Group Corp Technology	Added	59,603,230	+1,072,400	$1,195,640,793	−1.3%	0.71%
ELAN	Elanco Animal Health Inc Healthcare	Reduced	45,445,012	-395,944	$1,118,401,745	+2.0%	0.66%
JPM	Jpmorgan Chase & Co Financial Services	Reduced	3,382,627	-20,900	$1,107,235,295	+10.6%	0.65%
ADBE	Adobe Inc. Technology	Added	5,227,139	+496,293	$1,071,668,037	−6.8%	0.63%
NTRS	Northern Trust Corp Financial Services	Reduced	6,100,742	-448,295	$1,060,552,989	+16.0%	0.63%
GLW	Corning Inc /Ny Technology	Reduced	4,131,872	-2,900	$1,055,404,064	+87.7%	0.62%
NVS	Novartis AG Healthcare	Reduced	6,592,124	-975,230	$1,033,117,673	−10.6%	0.61%
TMO	Thermo Fisher Scientific Inc. Healthcare	Reduced	1,982,271	-260	$993,831,388	+2.0%	0.59%
CAT	Caterpillar Inc Industrials	Reduced	871,700	-560	$928,273,330	+50.2%	0.55%
MRVL	Marvell Technology, Inc. Technology	Reduced	2,757,995	-216,710	$821,579,130	+178.8%	0.49%
BMRN	Biomarin Pharmaceutical Inc Healthcare	Reduced	14,190,183	-3,822	$811,962,271	+1.3%	0.48%
NXT	Nextpower Inc. Technology	Reduced	6,688,767	-72,080	$796,899,700	−2.2%	0.47%
ORCL	Oracle Corp Technology	Reduced	5,386,230	-287,900	$789,352,006	−5.4%	0.47%
HPE	Hewlett Packard Enterprise Co Technology	Reduced	17,140,875	-88,205	$773,224,871	+88.5%	0.46%
AMAT	Applied Materials Inc /De Technology	Reduced	1,042,926	-131,200	$754,035,498	+87.9%	0.45%
IEX	Idex Corp /De/ Industrials	Reduced	3,300,072	-2,865	$748,951,340	+19.6%	0.44%

Covers the securities this platform tracks: U.S.-listed common stock and the put/call positions reported on it. A 13F can also report security types outside that coverage — preferred shares, bonds, warrants, untracked share classes — so the filing's own declared total can exceed the figures above. The source filing is linked at the top of this table.