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Primecap Management

Primecap Management Portfolio holdings

AUM $169B Turnover 4.85%
1-Year Est. Return 114.72%
This Fund
S&P 500
This Quarter Est. Return
+0.32%
1 Year Est. Return
+114.72%
3 Year Est. Return
+234.44%
5 Year Est. Return
+291.25%
10 Year Est. Return
+1,263.36%
AUM
$127B
AUM Growth
-$5.1B
Cap. Flow
-$1.76B
Cap. Flow %
-1.39%
Top 10 Hldgs %
33.45%
Holding
327
New
8
Increased
75
Reduced
180
Closed
7
Avg Time Held
7.4 years
Top 10 Avg Time Held
2.3 years
Top 20 Avg Time Held
6 years

Top Buys

Rank Stock Value
1
ADBE icon
Adobe
ADBE
+$292M
2
GTLB icon
GitLab
GTLB
+$179M
3
BA icon
Boeing
BA
+$179M
4
ERIC icon
Ericsson
ERIC
+$118M
5
BSX icon
Boston Scientific
BSX
+$115M

Top Sells

Rank Stock Value
1
MU icon
Micron Technology
MU
+$1.14B
2
KLAC icon
KLA
KLAC
+$641M
3
QCOM icon
Qualcomm
QCOM
+$238M
4
TXN icon
Texas Instruments
TXN
+$87M
5
FLEX icon
Flex
FLEX
+$84.3M

Sector Composition

Rank Sector Weight
1 Technology 31.09%
2 Healthcare 25.64%
3 Industrials 12.04%
4 Consumer Discretionary 10.88%
5 Financials 8.41%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow Held Since
AUR icon
201
Aurora
AUR
$9.86B
$40.4M 0.03%
9,806,110
-397,470
-4% -$1.76M
2021 Q4
17 quarters
PRM icon
202
Perimeter Solutions
PRM
$4.32B
$39.9M 0.03%
1,634,800
-9,281
-0.6% -$237K
2021 Q4
17 quarters
TW icon
203
Tradeweb Markets
TW
$23.9B
$38.6M 0.03%
328,082
-92,190
-22% -$10.6M
2019 Q2
27 quarters
IE icon
204
Ivanhoe Electric
IE
$1.38B
$38.3M 0.03%
3,239,584
+184,700
+6% +$2.89M
2023 Q3
10 quarters
UBER icon
205
Uber
UBER
$144B
$37M 0.03%
514,300
-51,800
-9% -$3.99M
2020 Q2
23 quarters
EXE icon
206
Expand Energy Corp
EXE
$21.6B
$36.3M 0.03%
330,947
– –
2024 Q4
5 quarters
ARM icon
207
Arm
ARM
$244B
$35.4M 0.03%
233,880
– –
2023 Q3
10 quarters
KEX icon
208
Kirby Corp
KEX
$7.2B
$35.1M 0.03%
263,803
-14,000
-5% -$1.77M
2020 Q4
21 quarters
WVE icon
209
Wave Life Sciences
WVE
$615M
$35M 0.03%
4,832,952
+737,670
+18% +$9.61M
2019 Q3
26 quarters
CRWD icon
210
CrowdStrike
CRWD
$232B
$34.4M 0.03%
352,600
-12,120
-3% -$1.28M
2019 Q2
27 quarters
KEY icon
211
KeyCorp
KEY
$21.3B
$34.1M 0.03%
1,699,430
– –
2023 Q3
10 quarters
CASY icon
212
Casey's General Stores
CASY
$25.5B
$33.3M 0.03%
45,700
-300
-0.7% -$195K
2024 Q2
7 quarters
ARLO icon
213
Arlo Technologies
ARLO
$1.31B
$33M 0.03%
2,318,513
-460,227
-17% -$6.15M
2018 Q3
30 quarters
CSGP icon
214
CoStar Group
CSGP
$13B
$32.4M 0.03%
803,600
+652,600
+432% +$34M
2025 Q1
4 quarters
ULTA icon
215
Ulta Beauty
ULTA
$25.4B
$32M 0.03%
61,250
-170
-0.3% -$108K
2017 Q4
33 quarters
SYNA icon
216
Synaptics
SYNA
$4.65B
$31.4M 0.02%
448,400
+236,700
+112% +$19.2M
2025 Q4
1 quarter
BRKR icon
217
Bruker
BRKR
$8.33B
$31M 0.02%
857,600
+202,500
+31% +$8.47M
2025 Q4
1 quarter
THG icon
218
Hanover Insurance
THG
$8.1B
$30.5M 0.02%
176,040
+139,140
+377% +$24.2M
2025 Q4
1 quarter
GFF icon
219
Griffon
GFF
$4.21B
$30.3M 0.02%
417,097
+6,550
+2% +$531K
2023 Q2
11 quarters
NCLH icon
220
Norwegian Cruise Line
NCLH
$6.9B
$29.9M 0.02%
1,600,604
-5,301
-0.3% -$116K
2014 Q1
48 quarters
TTD icon
221
Trade Desk
TTD
$5.76B
$28M 0.02%
1,232,605
+324,000
+36% +$9.35M
2023 Q1
12 quarters
GFL icon
222
GFL Environmental
GFL
$19.1B
$27.9M 0.02%
667,800
– –
2022 Q4
13 quarters
RGEN icon
223
Repligen
RGEN
$11.1B
$27.7M 0.02%
235,068
+48,400
+26% +$6.76M
2021 Q2
19 quarters
TSN icon
224
Tyson Foods
TSN
$19.3B
$26.6M 0.02%
415,000
– –
2014 Q4
45 quarters
NWL icon
225
Newell Brands
NWL
$2.4B
$25.8M 0.02%
7,525,390
-1,183,553
-14% -$4.97M
2014 Q1
48 quarters
7 8
9
10 11

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Primecap Management's Q1 2026 Portfolio in Review

As of Q1 2026, Primecap Management held 327 positions worth $127B, down 3.9% from $132B the previous quarter. Its ten largest holdings account for 33% of the portfolio.

Trading was light in Q1 2026: portfolio turnover was 4.6%. Primecap Management opened 8 new positions and exited 7, leaving the 327-position portfolio largely intact.

By sector, the portfolio is most concentrated in Technology at 31% of assets, up from 30% a quarter earlier, followed by Healthcare and Industrials.

  • Primecap Management's largest Q1 2026 buy was Waste Management: 277,600 shares worth $63.8M.
  • Primecap Management added most to Adobe in Q1 2026, an estimated $292M increase.
  • Primecap Management's biggest Q1 2026 reduction was Micron Technology, cutting an estimated $1.14B.
  • Primecap Management fully exited CyberArk in Q1 2026, selling an estimated $13.6M.
  • Primecap Management's ten largest holdings make up 33% of its $127B portfolio in Q1 2026.
  • Primecap Management opened 8 new positions and closed 7 in Q1 2026.
  • Primecap Management's portfolio value fell 3.9% quarter-over-quarter to $127B.

Based on Primecap Management's 13F filing for Q1 2026, filed 11 May 2026.