PRIMECAP MANAGEMENT CO/CA/

CIK

763212

Location

PASADENA, CA

Portfolio Value

Mega $125,344,368,409

Diversification

Diversified

Filing Date

Global Rank

#65 / 8,605 ▼ 3 · as of Mar 2026

Top Industry

Drug Manufacturers - General 17.5%

3Y Alpha vs SPY

+3.6%

Period ended 3 months ago

Filed May 13, 2026 · 57d

25 quarters · since Mar 2020

Clone Performance

Jul 2023–Jul 2026 · vs SPY

Hypothetical growth of cloning every reported 13F position and rebalancing on each filing, indexed to the same start.

Cloned portfolio

+94.2%

SPY

+76.5%

Annualised alpha

+3.9%

Max drawdown

−21.7%

Estimate. 13F holdings are quarter-lagged and long-only, so the clone rebalances about 45 days after each period end — when the filing becomes public — and excludes options and short positions. Past performance does not predict future results.

Portfolio Concentration

318 positions · as of Mar 31, 2026 · Δ vs Dec 31, 2025

Top Position

6.8%

−1.1 pts

Top 5

21.8%

−0.9 pts

Top 10

33.9%

−0.4 pts

HHI

195

Diversified−12

Portfolio Trend

25 quarters · across all stocks

Sector Breakdown

As of Mar 31, 2026

Sector	% Portfolio	Value	Positions
Technology	31.5%	$39,457,889,829	80
Healthcare	26.0%	$32,570,219,471	58
Industrials	12.2%	$15,289,479,743	53
Consumer Cyclical	11.0%	$13,823,697,712	42
Financial Services	8.5%	$10,687,661,873	27
Communication Services	6.0%	$7,557,376,729	16
Energy	2.1%	$2,684,674,960	13
Consumer Defensive	1.3%	$1,687,157,815	14
Basic Materials	1.2%	$1,459,017,922	11
Real Estate	0.1%	$108,398,956	2
Utilities	0.0%	$18,793,399	2

Last Quarter's Activity

Export CSV

Mar 31, 2026 vs Dec 31, 2025

Added To

Positions the filer increased

25 positions

Ticker	Company	Δ Shares	Shares	Value
ERIC	Ericsson Lm Telephone Co	+10,874,714	37,504,013	$422,670,226
GTLB	Gitlab Inc.	+6,139,789	7,299,050	$157,951,442
HPQ	Hp Inc	+3,814,140	21,469,625	$412,431,496
PYPL	PayPal Holdings, Inc.	+1,858,000	10,026,490	$453,498,142
BSX	Boston Scientific Corp	+1,433,590	32,529,774	$2,041,243,318
INDI	indie Semiconductor, Inc.	+1,291,598	31,066,306	$100,033,505
ADBE	Adobe Inc.	+1,054,640	4,730,846	$1,149,974,045
CARR	CARRIER GLOBAL Corp	+920,630	3,840,205	$216,241,943
XMTR	Xometry, Inc.	+812,590	6,495,497	$265,276,097
BA	Boeing Co	+786,810	795,910	$158,409,967
WVE	Wave Life Sciences Ltd.	+737,670	4,832,952	$35,038,902
CSGP	Costar Group, Inc.	+652,600	803,600	$32,417,224
MBLY	Mobileye Global Inc.	+552,500	3,197,180	$21,964,626
SEPN	Septerna, Inc.	+502,734	1,048,834	$25,203,481
VNOM	Viper Energy, Inc.	+473,152	1,165,252	$54,755,191
NFLX	Netflix Inc	+388,680	4,411,790	$424,193,608
PSN	Parsons Corp	+369,700	1,020,400	$55,275,068
TTD	Trade Desk, Inc.	+324,000	1,232,605	$27,967,807
TOST	Toast, Inc.	+320,500	476,500	$12,632,015
ALLO	Allogene Therapeutics, Inc.	+240,000	8,379,840	$20,446,809
SYNA	SYNAPTICS Inc	+236,700	448,400	$31,405,936
SONY	Sony Group Corp	+229,400	58,530,830	$1,211,588,181
BAC	Bank Of America Corp /De/	+221,500	2,762,232	$134,658,810
BIRK	Birkenstock Holding plc	+210,400	597,200	$21,397,676
BRKR	Bruker Corp	+202,500	857,600	$30,976,512
No positions match the current search.

Trimmed

Positions the filer reduced

25 positions

Ticker	Company	Δ Shares	Shares	Value
MU	Micron Technology Inc	−2,920,732	21,874,204	$7,389,981,079
HPE	Hewlett Packard Enterprise Co	−1,983,637	17,229,080	$410,224,394
QCOM	Qualcomm Inc/De	−1,632,497	705,587	$90,865,493
NFE	New Fortress Energy Inc.	−1,520,800	540,300	$318,777
RIG	Transocean Ltd.	−1,411,680	2,573,290	$17,060,912
FLEX	Flex Ltd.	−1,318,643	25,383,448	$1,661,600,506
NWL	Newell Brands Inc.	−1,183,553	7,525,390	$25,812,087
WFC	Wells Fargo & Company/Mn	−637,170	7,723,102	$614,836,150
FIS	Fidelity National Information Services, Inc.	−628,800	217,406	$10,198,515
CSX	Csx Corp	−557,100	1,634,900	$67,112,645
ARLO	Arlo Technologies, Inc.	−460,227	2,318,513	$32,992,439
GTM	ZoomInfo Technologies Inc.	−445,200	3,224,964	$19,285,284
CPRI	Capri Holdings Ltd	−444,709	3,462,035	$61,001,056
KLAC	Kla Corp	−438,315	2,437,647	$3,589,215,819
TXN	Texas Instruments Inc	−429,920	9,654,766	$1,874,376,271
AUR	Aurora Innovation, Inc.	−397,470	9,806,110	$40,401,173
ELAN	Elanco Animal Health Inc	−373,132	45,840,956	$1,096,974,077
RVTY	Revvity, Inc.	−371,255	867,030	$75,960,498
INTC	Intel Corp	−370,300	75,761,968	$3,343,375,647
MQ	Marqeta, Inc.	−370,000	163,600	$2,669,952
IQV	Iqvia Holdings Inc.	−369,739	62,332	$10,630,099
ORCL	Oracle Corp	−357,610	5,674,130	$834,721,264
BMRN	Biomarin Pharmaceutical Inc	−355,309	14,194,005	$801,819,342
LUV	Southwest Airlines Co	−322,600	47,069,495	$1,768,400,927
FORM	Formfactor Inc	−292,602	1,788,644	$173,480,581
No positions match the current search.

New Positions

Positions the filer opened this quarter

9 positions

Ticker	Company	Shares	Value
AZN	Astrazeneca PLC	18,213,708	$3,592,107,491
WM	Waste Management Inc	277,600	$63,789,704
LHX	L3harris Technologies, Inc. /De/	143,000	$49,356,450
PVLA	Palvella Therapeutics, Inc.	195,030	$24,310,489
FITB	Fifth Third Bancorp	196,260	$9,118,239
XEL	Xcel Energy Inc	67,000	$5,322,480
ITT	Itt Inc.	9,000	$1,714,770
WMG	Warner Music Group Corp.	17,300	$441,842
SNDK	Sandisk Corp	400	$254,136
No positions match the current search.

Sold Out

Positions the filer fully exited

5 positions

Ticker	Company	Shares	Value
SOLS	Solstice Advanced Materials Inc.	119,750	$5,817,455
EXAS	EXACT SCIENCES CORP	34,300	$3,483,508
SNCY	Sun Country Airlines Holdings, LLC	142,915	$2,056,546
CRCL	Circle Internet Group, Inc.	2,600	$206,180
LESL	Leslie's, Inc.	65,556	$108,167
No positions match the current search.

Portfolio Positions

Compact Export CSV View 13F filing

318 positions · $125,344,368,409 total · as of Mar 31, 2026

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

Showing 1–50 of 318 positions by value · page 1 of 7

Ticker	Company	Type	Shares	Δ Shares	Value (USD)	% Δ Value	% of Portfolio
LLY	ELI LILLY & Co Healthcare	Reduced	9,223,432	-42,350	$8,483,436,050	−14.8%	6.77%
MU	Micron Technology Inc Technology	Reduced	21,874,204	-2,920,732	$7,389,981,079	+4.4%	5.90%
GOOGL	Alphabet Inc. Communication Services	Reduced	14,987,459	-140,830	$4,309,793,710	−9.0%	3.44%
AZN	Astrazeneca PLC Healthcare	NEW	18,213,708	NEW	$3,592,107,491	NEW	2.87%
KLAC	Kla Corp Technology	Reduced	2,437,647	-438,315	$3,589,215,819	+2.7%	2.86%
INTC	Intel Corp Technology	Reduced	75,761,968	-370,300	$3,343,375,647	+19.0%	2.67%
AMGN	Amgen Inc Healthcare	Reduced	8,874,129	-30,850	$3,122,362,288	+7.1%	2.49%
NVDA	Nvidia Corp Technology	Reduced	17,188,230	-39,290	$2,997,627,312	−6.7%	2.39%
FDX	Fedex Corp Industrials	Reduced	8,303,010	-209,661	$2,957,366,101	+20.3%	2.36%
BIIB	Biogen Inc. Healthcare	Reduced	14,757,607	-390	$2,705,512,091	+4.2%	2.16%
MSFT	Microsoft Corp Technology	Reduced	7,264,560	-22,960	$2,689,122,175	−23.7%	2.15%
AMZN	Amazon Com Inc Consumer Cyclical	Reduced	12,107,038	-149,150	$2,521,532,804	−10.9%	2.01%
BABA	Alibaba Group Holding Ltd Consumer Cyclical	Reduced	18,722,316	-255,120	$2,348,901,765	−15.6%	1.87%
TSLA	Tesla, Inc. Consumer Cyclical	Reduced	6,125,520	-191,900	$2,277,162,060	−19.8%	1.82%
SCHW	Schwab Charles Corp Financial Services	Added	23,441,915	+165,844	$2,203,071,171	−5.3%	1.76%
BSX	Boston Scientific Corp Healthcare	Added	32,529,774	+1,433,590	$2,041,243,318	−31.2%	1.63%
ROST	Ross Stores, Inc. Consumer Cyclical	Reduced	9,170,030	-37,170	$1,986,503,598	+19.8%	1.58%
TXN	Texas Instruments Inc Technology	Reduced	9,654,766	-429,920	$1,874,376,271	+7.1%	1.50%
LUV	Southwest Airlines Co Industrials	Reduced	47,069,495	-322,600	$1,768,400,927	−9.7%	1.41%
FLEX	Flex Ltd. Technology	Reduced	25,383,448	-1,318,643	$1,661,600,506	+3.0%	1.33%
TJX	Tjx Companies Inc /De/ Consumer Cyclical	Reduced	9,588,920	-150,400	$1,531,350,524	+2.4%	1.22%
COP	Conocophillips Energy	Added	11,579,265	+1,800	$1,528,462,980	+41.0%	1.22%
BMY	Bristol Myers Squibb Co Healthcare	Added	24,985,149	+109,599	$1,515,349,286	+12.9%	1.21%
ONC	BeOne Medicines Ltd. Healthcare	Reduced	4,975,181	-5,400	$1,477,479,501	−2.4%	1.18%
UAL	United Airlines Holdings, Inc. Industrials	Reduced	15,750,610	-227,880	$1,450,158,662	−18.8%	1.16%
GSK	GSK plc Healthcare	Added	25,204,538	+74,378	$1,391,038,452	+12.9%	1.11%
RJF	Raymond James Financial Inc Financial Services	Added	9,347,172	+5,100	$1,353,377,033	−9.8%	1.08%
BIDU	Baidu, Inc. Communication Services	Reduced	11,056,800	-46,800	$1,231,948,656	−15.1%	0.98%
V	Visa Inc. Financial Services	Added	4,060,201	+51,250	$1,227,155,150	−12.7%	0.98%
SONY	Sony Group Corp Technology	Added	58,530,830	+229,400	$1,211,588,181	−18.8%	0.97%
DAL	Delta Air Lines, Inc. Industrials	Reduced	17,548,567	-45,560	$1,166,628,734	−4.5%	0.93%
NVS	Novartis AG Healthcare	Reduced	7,567,354	-11,920	$1,155,913,323	+10.6%	0.92%
ADBE	Adobe Inc. Technology	Added	4,730,846	+1,054,640	$1,149,974,045	−10.6%	0.92%
ELAN	Elanco Animal Health Inc Healthcare	Reduced	45,840,956	-373,132	$1,096,974,077	+4.9%	0.88%
JPM	Jpmorgan Chase & Co Financial Services	Reduced	3,403,527	-203,360	$1,001,181,502	−13.9%	0.80%
ADI	Analog Devices Inc Technology	Reduced	3,136,089	-5,551	$997,715,354	+17.1%	0.80%
TMO	Thermo Fisher Scientific Inc. Healthcare	Reduced	1,982,531	-74,761	$974,473,462	−18.3%	0.78%
NTAP	NetApp, Inc. Technology	Reduced	9,057,455	-10,600	$927,392,817	−4.5%	0.74%
NTRS	Northern Trust Corp Financial Services	Reduced	6,549,037	-58,680	$914,049,094	+1.3%	0.73%
JBL	Jabil Inc Technology	Reduced	3,281,169	-62,501	$871,576,921	+14.3%	0.70%
ORCL	Oracle Corp Technology	Reduced	5,674,130	-357,610	$834,721,264	−29.0%	0.67%
NXT	Nextpower Inc. Technology	Reduced	6,760,847	-190,750	$815,020,105	+34.6%	0.65%
BMRN	Biomarin Pharmaceutical Inc Healthcare	Reduced	14,194,005	-355,309	$801,819,342	−7.3%	0.64%
ACM	Aecom Industrials	Reduced	8,647,073	-20,210	$733,444,731	−11.2%	0.59%
RCL	Royal Caribbean Cruises Ltd Consumer Cyclical	Reduced	2,346,921	-63,600	$645,825,720	−3.9%	0.52%
IEX	Idex Corp /De/ Industrials	Added	3,302,937	+76,150	$626,071,708	+9.0%	0.50%
CAT	Caterpillar Inc Industrials	Reduced	872,260	-7,910	$617,961,319	+22.6%	0.49%
WFC	Wells Fargo & Company/Mn Financial Services	Reduced	7,723,102	-637,170	$614,836,150	−21.1%	0.49%
DIS	Walt Disney Co Communication Services	Reduced	6,235,127	-1,500	$600,941,540	−15.3%	0.48%
J	Jacobs Solutions Inc. Industrials	Reduced	4,515,479	-10,480	$574,730,167	−4.1%	0.46%