2026 Q1 Portfolio Activity
In 2026 Q1, PRIMECAP MANAGEMENT CO/CA/ maintained a portfolio of 328 distinct positions. The most significant new addition was ASTRAZENECA PLC, now representing 2.83% of the total fund value. They heavily accumulated shares in TELEFONAKTIEBOLAGET LM ERICS, increasing the position by 40.8%. Conversely, PRIMECAP MANAGEMENT CO/CA/ completely exited their position in ASTRAZENECA PLC.
Position History
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Total Positions
328
Quarter
2026 Q1
Top Holding
LLY (6.7%)
Top 10 Concentration
33.5%
Turnover Rate
23.4%
Sector HHI
0.18
Items per page:
Showing 1-50 of 328
PRIMECAP MANAGEMENT CO/CA/ Full Holdings List — 2026 Q1
| Stock | History | Sector / Type | Port % | Prev % | Rank / Prev | Conviction | Change | % Change | Influence | Shares | Mkt Value | Avg Cost | Price Held | 1st Owned | Source | Source Date | Date Reported | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
LLY
ELI LILLY & CO
|
Healthcare | 6.68% | 7.54% |
#1
Prev: #1
|
5.2 |
—
|
-42,350 | -0.5% |
P
S
|
9,223,432 | $8,483,436,050 | 1999 Q1 | 13F Filing | 2026-03-31 | 2026-05-11 | |||
|
MU
MICRON TECHNOLO...
|
Technology | 5.82% | 5.36% |
#2
Prev: #2
|
4.3 |
—
|
-2,920,732 | -11.8% |
P
S
|
21,874,204 | $7,389,981,079 | 1999 Q1 | 13F Filing | 2026-03-31 | 2026-05-11 | |||
|
GOOGL
ALPHABET INC
|
Communication Services | 3.39% | 3.58% |
#3
Prev: #3
|
2.9 |
—
|
-140,830 | -0.9% |
P
S
|
14,987,459 | $4,309,793,710 | 2015 Q3 | 13F Filing | 2026-03-31 | 2026-05-11 | |||
|
AZNCF
ASTRAZENECA PLC
|
Unknown | 2.83% | — |
#4
Prev: #—
|
5.1 |
—
|
18,213,708 | — |
NEW
|
18,213,708 | $3,592,107,490 | 2026 Q1 | 13F Filing | 2026-03-31 | 2026-05-11 | |||
|
KLAC
KLA CORP
|
Technology | 2.83% | 2.65% |
#5
Prev: #5
|
2.1 |
—
|
-438,315 | -15.2% |
P
S
|
2,437,647 | $3,589,215,820 | 2004 Q4 | 13F Filing | 2026-03-31 | 2026-05-11 | |||
|
INTC
INTEL CORP
|
Technology | 2.63% | 2.13% |
#6
6
Prev: #12
|
1.6 |
—
|
-370,300 | -0.5% |
P
S
|
75,761,968 | $3,343,375,647 | 1999 Q1 | 13F Filing | 2026-03-31 | 2026-05-11 | |||
|
AMGN
AMGEN INC
|
Healthcare | 2.46% | 2.21% |
#7
2
Prev: #9
|
1.5 |
—
|
-30,850 | -0.3% |
P
S
|
8,874,129 | $3,122,362,289 | 1999 Q2 | 13F Filing | 2026-03-31 | 2026-05-11 | |||
|
NVDA
NVIDIA CORPORAT...
|
Technology | 2.36% | 2.43% |
#8
1
Prev: #7
|
1.4 |
—
|
-39,290 | -0.2% |
P
S
|
17,188,230 | $2,997,627,312 | 2012 Q4 | 13F Filing | 2026-03-31 | 2026-05-11 | |||
|
FDX
FEDEX CORP
|
Industrials | 2.33% | 1.86% |
#9
6
Prev: #15
|
1.4 |
—
|
-209,661 | -2.5% |
P
S
|
8,303,010 | $2,957,366,459 | 1999 Q1 | 13F Filing | 2026-03-31 | 2026-05-11 | |||
|
BIIB
BIOGEN INC
|
Healthcare | 2.13% | 1.97% |
#10
4
Prev: #14
|
1.4 |
—
|
-390 | -0.0% |
P
S
|
14,757,607 | $2,705,512,094 | 2003 Q4 | 13F Filing | 2026-03-31 | 2026-05-11 | |||
|
MSFT
MICROSOFT CORP
|
Technology | 2.12% | 2.67% |
#11
7
Prev: #4
|
1.3 |
—
|
-22,960 | -0.3% |
P
S
|
7,264,560 | $2,689,122,175 | 2000 Q2 | 13F Filing | 2026-03-31 | 2026-05-11 | |||
|
AMZN
AMAZON COM INC
|
Consumer Cyclical | 1.99% | 2.14% |
#12
1
Prev: #11
|
1.3 |
—
|
-149,150 | -1.2% |
P
S
|
12,107,038 | $2,521,532,807 | 2007 Q1 | 13F Filing | 2026-03-31 | 2026-05-11 | |||
|
BABA
ALIBABA GROUP H...
|
Consumer Cyclical | 1.85% | 2.11% |
#13
Prev: #13
|
1.2 |
—
|
-255,120 | -1.3% |
P
S
|
18,722,316 | $2,348,901,765 | 2014 Q3 | 13F Filing | 2026-03-31 | 2026-05-11 | |||
|
TSLA
TESLA INC
|
Consumer Cyclical | 1.79% | 2.15% |
#14
4
Prev: #10
|
1.2 |
—
|
-191,900 | -3.0% |
P
S
|
6,125,520 | $2,277,162,063 | 2011 Q2 | 13F Filing | 2026-03-31 | 2026-05-11 | |||
|
SCHW
SCHWAB CHARLES ...
|
Financial Services | 1.73% | 1.76% |
#15
1
Prev: #16
|
1.2 |
—
|
165,844 | 0.7% |
P
S
|
23,441,915 | $2,203,071,172 | 2011 Q2 | 13F Filing | 2026-03-31 | 2026-05-11 | |||
|
BSX
BOSTON SCIENTIF...
|
Healthcare | 1.61% | 2.24% |
#16
8
Prev: #8
|
1.1 |
—
|
1,433,590 | 4.6% |
P
S
|
32,529,774 | $2,041,243,323 | 1999 Q1 | 13F Filing | 2026-03-31 | 2026-05-11 | |||
|
ROST
ROSS STORES INC
|
Consumer Cyclical | 1.56% | 1.26% |
#17
4
Prev: #21
|
1.1 |
—
|
-37,170 | -0.4% |
P
S
|
9,170,030 | $1,986,503,598 | 2011 Q4 | 13F Filing | 2026-03-31 | 2026-05-11 | |||
|
TXN
TEXAS INSTRS IN...
|
Technology | 1.48% | 1.32% |
#18
2
Prev: #20
|
1.1 |
—
|
-429,920 | -4.3% |
P
S
|
9,654,766 | $1,874,376,272 | 1999 Q1 | 13F Filing | 2026-03-31 | 2026-05-11 | |||
|
LUV
SOUTHWEST AIRLS...
|
Industrials | 1.39% | 1.48% |
#19
2
Prev: #17
|
1.1 |
—
|
-322,600 | -0.7% |
P
S
|
47,069,495 | $1,768,400,930 | 1999 Q1 | 13F Filing | 2026-03-31 | 2026-05-11 | |||
|
FLEX
FLEXTRONICS INT...
|
Technology | 1.31% | 1.22% |
#20
2
Prev: #22
|
1.0 |
—
|
-1,318,643 | -4.9% |
P
S
|
25,383,448 | $1,661,600,508 | 2007 Q4 | 13F Filing | 2026-03-31 | 2026-05-11 | |||
|
GOOG
ALPHABET INC
|
Communication Services | 1.29% | 1.37% |
#21
3
Prev: #18
|
1.0 |
—
|
-41,730 | -0.7% |
P
S
|
5,720,910 | $1,641,100,244 | 2005 Q1 | 13F Filing | 2026-03-31 | 2026-05-11 | |||
|
TJX
TJX COS INC NEW
|
Consumer Cyclical | 1.21% | 1.13% |
#22
3
Prev: #25
|
1.0 |
—
|
-150,400 | -1.5% |
P
S
|
9,588,920 | $1,531,350,524 | 1999 Q1 | 13F Filing | 2026-03-31 | 2026-05-11 | |||
|
COP
CONOCOPHILLIPS
|
Energy | 1.20% | 0.82% |
#23
13
Prev: #36
|
1.0 |
—
|
1,800 | 0.0% |
P
S
|
11,579,265 | $1,528,462,980 | 2002 Q3 | 13F Filing | 2026-03-31 | 2026-05-11 | |||
|
BMY
BRISTOL-MYERS S...
|
Healthcare | 1.19% | 1.02% |
#24
5
Prev: #29
|
1.0 |
—
|
109,599 | 0.4% |
P
S
|
24,985,149 | $1,515,349,351 | 2001 Q4 | 13F Filing | 2026-03-31 | 2026-05-11 | |||
|
ONC
BEONE MEDICINES...
|
Healthcare | 1.16% | 1.15% |
#25
2
Prev: #23
|
1.0 |
—
|
-5,400 | -0.1% |
P
S
|
4,975,181 | $1,477,479,502 | 2017 Q2 | 13F Filing | 2026-03-31 | 2026-05-11 | |||
|
UAL
UNITED AIRLS HL...
|
Industrials | 1.14% | 1.35% |
#26
7
Prev: #19
|
1.0 |
—
|
-227,880 | -1.4% |
P
S
|
15,750,610 | $1,450,158,662 | 1999 Q1 | 13F Filing | 2026-03-31 | 2026-05-11 | |||
|
GSK
GSK PLC
|
Healthcare | 1.10% | 0.93% |
#27
4
Prev: #31
|
0.9 |
—
|
74,378 | 0.3% |
P
S
|
25,204,538 | $1,391,038,453 | 2005 Q1 | 13F Filing | 2026-03-31 | 2026-05-11 | |||
|
RJF
RAYMOND JAMES F...
|
Financial Services | 1.07% | 1.14% |
#28
4
Prev: #24
|
0.9 |
—
|
5,100 | 0.1% |
P
S
|
9,347,172 | $1,353,377,035 | 2018 Q4 | 13F Filing | 2026-03-31 | 2026-05-11 | |||
|
BIDU
BAIDU INC
|
Communication Services | 0.97% | 1.10% |
#29
2
Prev: #27
|
0.9 |
—
|
-46,800 | -0.4% |
P
S
|
11,056,800 | $1,231,948,656 | 2019 Q4 | 13F Filing | 2026-03-31 | 2026-05-11 | |||
|
V
VISA INC
|
Financial Services | 0.97% | 1.06% |
#30
2
Prev: #28
|
0.9 |
—
|
51,250 | 1.3% |
P
S
|
4,060,201 | $1,227,155,151 | 2008 Q1 | 13F Filing | 2026-03-31 | 2026-05-11 | |||
|
SONY
SONY GROUP CORP
|
Technology | 0.95% | 1.13% |
#31
5
Prev: #26
|
0.9 |
—
|
229,400 | 0.4% |
P
S
|
58,530,830 | $1,211,588,183 | 1999 Q1 | 13F Filing | 2026-03-31 | 2026-05-11 | |||
|
DAL
DELTA AIR LINES...
|
Industrials | 0.92% | 0.92% |
#32
Prev: #32
|
0.9 |
—
|
-45,560 | -0.3% |
P
S
|
17,548,567 | $1,166,628,734 | 1999 Q1 | 13F Filing | 2026-03-31 | 2026-05-11 | |||
|
NVS
NOVARTIS AG
|
Healthcare | 0.91% | 0.79% |
#33
5
Prev: #38
|
0.9 |
—
|
-11,920 | -0.2% |
P
S
|
7,567,354 | $1,155,913,327 | 2012 Q4 | 13F Filing | 2026-03-31 | 2026-05-11 | |||
|
ADBE
ADOBE INC
|
Technology | 0.91% | 0.97% |
#34
4
Prev: #30
|
2.9 |
—
|
1,054,640 | 28.7% |
P
S
|
4,730,846 | $1,149,974,047 | 1999 Q1 | 13F Filing | 2026-03-31 | 2026-05-11 | |||
|
ELAN
ELANCO ANIMAL H...
|
Healthcare | 0.86% | 0.79% |
#35
2
Prev: #37
|
0.8 |
—
|
-373,132 | -0.8% |
P
S
|
45,840,956 | $1,096,974,077 | 2018 Q3 | 13F Filing | 2026-03-31 | 2026-05-11 | |||
|
JPM
JPMORGAN CHASE ...
|
Financial Services | 0.79% | 0.88% |
#36
1
Prev: #35
|
0.8 |
—
|
-203,360 | -5.6% |
P
S
|
3,403,527 | $1,001,181,502 | 2002 Q1 | 13F Filing | 2026-03-31 | 2026-05-11 | |||
|
ADI
ANALOG DEVICES ...
|
Technology | 0.79% | 0.64% |
#37
5
Prev: #42
|
0.8 |
—
|
-5,551 | -0.2% |
P
S
|
3,136,089 | $997,715,672 | 2011 Q3 | 13F Filing | 2026-03-31 | 2026-05-11 | |||
|
TMO
THERMO FISHER S...
|
Healthcare | 0.77% | 0.90% |
#38
5
Prev: #33
|
0.8 |
—
|
-74,761 | -3.6% |
P
S
|
1,982,531 | $974,473,464 | 2013 Q4 | 13F Filing | 2026-03-31 | 2026-05-11 | |||
|
NTAP
NETAPP INC
|
Technology | 0.73% | 0.74% |
#39
Prev: #39
|
0.8 |
—
|
-10,600 | -0.1% |
P
S
|
9,057,455 | $927,392,817 | 2011 Q3 | 13F Filing | 2026-03-31 | 2026-05-11 | |||
|
NTRS
NORTHERN TR COR...
|
Financial Services | 0.72% | 0.68% |
#40
Prev: #40
|
0.8 |
—
|
-58,680 | -0.9% |
P
S
|
6,549,037 | $914,049,094 | 2016 Q1 | 13F Filing | 2026-03-31 | 2026-05-11 | |||
|
JBL
JABIL INC
|
Technology | 0.69% | 0.58% |
#41
4
Prev: #45
|
0.8 |
—
|
-62,501 | -1.9% |
P
S
|
3,281,169 | $871,577,187 | 2008 Q1 | 13F Filing | 2026-03-31 | 2026-05-11 | |||
|
ORCL
ORACLE CORP
|
Technology | 0.66% | 0.89% |
#42
8
Prev: #34
|
0.8 |
—
|
-357,610 | -5.9% |
P
S
|
5,674,130 | $834,721,266 | 2005 Q1 | 13F Filing | 2026-03-31 | 2026-05-11 | |||
|
NXT
NEXTPOWER INC
|
Technology | 0.64% | 0.46% |
#43
7
Prev: #50
|
0.8 |
—
|
-190,750 | -2.7% |
P
S
|
6,760,847 | $815,020,105 | 2023 Q1 | 13F Filing | 2026-03-31 | 2026-05-11 | |||
|
BMRN
BIOMARIN PHARMA...
|
Healthcare | 0.63% | 0.65% |
#44
3
Prev: #41
|
0.8 |
—
|
-355,309 | -2.4% |
P
S
|
14,194,005 | $801,819,344 | 2001 Q4 | 13F Filing | 2026-03-31 | 2026-05-11 | |||
|
ACM
AECOM
|
Industrials | 0.58% | 0.63% |
#45
2
Prev: #43
|
0.7 |
—
|
-20,210 | -0.2% |
P
S
|
8,647,073 | $733,444,733 | 2010 Q4 | 13F Filing | 2026-03-31 | 2026-05-11 | |||
|
RCL
ROYAL CARIBBEAN...
|
Consumer Cyclical | 0.51% | 0.51% |
#46
3
Prev: #49
|
0.7 |
—
|
-63,600 | -2.6% |
P
S
|
2,346,921 | $645,825,721 | 2000 Q2 | 13F Filing | 2026-03-31 | 2026-05-11 | |||
|
IEX
IDEX CORP
|
Industrials | 0.49% | 0.43% |
#47
7
Prev: #54
|
0.7 |
—
|
76,150 | 2.4% |
P
S
|
3,302,937 | $626,071,710 | 2012 Q1 | 13F Filing | 2026-03-31 | 2026-05-11 | |||
|
CAT
CATERPILLAR INC
|
Industrials | 0.49% | 0.38% |
#48
10
Prev: #58
|
0.7 |
—
|
-7,910 | -0.9% |
P
S
|
872,260 | $617,961,318 | 1999 Q1 | 13F Filing | 2026-03-31 | 2026-05-11 | |||
|
WFC
WELLS FARGO & C...
|
Financial Services | 0.48% | 0.59% |
#49
5
Prev: #44
|
0.7 |
—
|
-637,170 | -7.6% |
P
S
|
7,723,102 | $614,836,150 | 1999 Q1 | 13F Filing | 2026-03-31 | 2026-05-11 | |||
|
DIS
DISNEY WALT CO
|
Communication Services | 0.47% | 0.54% |
#50
3
Prev: #47
|
0.7 |
—
|
-1,500 | -0.0% |
P
S
|
6,235,127 | $600,941,540 | 2000 Q1 | 13F Filing | 2026-03-31 | 2026-05-11 |
Showing 1-50 of 328 holdings