PRIMECAP MANAGEMENT CO/CA/

Registered adviser

CIK

763212

Location

PASADENA, CA

Portfolio Value

Mega $169,106,414,515

Diversification

Diversified

Filing Date

Global Rank

#65 / 8,807 ▲ 4

Top Industry

Semiconductors 24.8%

Period ended 4 months ago

Filed Aug 14, 2026 · 2mo

26 quarters · since Mar 2020

Regulatory profile

From Form ADV, the SEC filer profile, 13D/13G type codes and N-CEN, never from the name.

Holder type

Registered adviser

Form ADV roster, Oct 1, 2026

Form ADV adviser

CRD 105516

Roster of Oct 1, 2026

Regulatory AUM

$139,344,370,550

Main clients

Registered funds and BDCs (96% of AUM)

Registered funds advised

7 series (0 index, 0 ETFs)

$127,689,044,200 net assets· N-CEN Dec 31, 2025

LEI

254900YBJPASOJ076244

Form ADV history

Monthly rosters from Dec 2019; each row is a run with the same figures, newest first.

Rosters	Regulatory AUM	Main clients
Apr 2020 to Jan 2021	$147,368,664,102	Registered funds and BDCs (91%)
Dec 2019 to Mar 2020	$127,104,615,153	Registered funds and BDCs (91%)

Portfolio style

Measured from the filed 13F common-share book for Jun 30, 2026, never from the firm's own description.

Style

Diversified active

Top 10 weight 43.7%, 29.1 effective positions, active share 67.9% against the Russell 1000 as of 2026-06-30; it meets none of the index-like, systematic-like or concentrated tests

Turnover

Low turnover

11.5% over the last four quarters (under 30%)

Horizon

Long horizon

Value-weighted holding period 24.1 quarters (12+), a floor since 87.4% of the book was already held when coverage starts

Closest benchmark: the Russell 1000 as of 2026-06-30, active share 67.9%; sector active share 26.1% against the combined 13F book's sector weights.

Over time 26 measured quarters

How the bands are measured

Style bands measure the filed 13F common-share book each closed quarter, tested in this order. Unknown: under $10,000,000 of valued equity or 5 stocks. Index-like (100+ stocks): active share of 20% or less against the closest benchmark, which is the S&P 500, S&P MidCap 400, S&P SmallCap 600, Russell 1000, Russell 2000, Nasdaq-100 or Dow Jones Industrial Average (weighted by an index-tracking fund's reported holdings or the index's constituents nearest the quarter end, over the names resolved to companies, and only when those are 90%+ of its weight) or every 13F filer's combined book, or index series holding 80%+ of the registered fund assets it advises (N-CEN) and equal to 50%+ of its book. Systematic-like: 500+ stocks, 100%+ annual turnover and a top 10 weight of 25% or less. Concentrated: a top 10 weight of 60%+ or 12 or fewer effective positions. Diversified active: none of these. Turnover is the smaller of buys and sells over average equity value, summed over four quarters: low under 30%, high 100%+. Horizon is the value-weighted number of quarters each position has been held: short under 4, long 12+.

Clone Performance

Build a hypothetical price-return history from this filer's public 13F holdings.

View clone backtest

Portfolio Concentration

324 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	17
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
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
GOOG	Alphabet Inc.	−321,850	5,399,060	$1,907,649,869
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

324 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 324 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%
KLAC	Kla Corp Technology	Added	20,536,730	+18,099,083	$6,196,136,808	+72.6%	3.66%
GOOGL	Alphabet Inc. Communication Services	Reduced	14,859,769	-127,690	$5,310,435,647	+23.2%	3.14%
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%
GOOG	Alphabet Inc. Communication Services	Reduced	5,399,060	-321,850	$1,907,649,869	+16.2%	1.13%
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%

Showing the top 50 of 324 positions. Create a free account to see every position, past quarters, search, filters and CSV export.

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.