How many stocks does PRIMECAP MANAGEMENT CO/CA/ own?

As of Q1 2026, PRIMECAP MANAGEMENT CO/CA/ holds 320 positions in their 13F portfolio.

What is PRIMECAP MANAGEMENT CO/CA/'s largest holding?

LLY at 6.7% of portfolio, worth $8.5B.

What is PRIMECAP MANAGEMENT CO/CA/'s total portfolio value?

$127B as of Q1 2026, tracked across 320 holdings.

Is PRIMECAP MANAGEMENT CO/CA/ a hedge fund?

PRIMECAP MANAGEMENT CO/CA/ is an institutional investment manager required to file SEC 13F reports. This includes hedge funds, mutual funds, pension funds, and other institutions managing over $100M.

How often does PRIMECAP MANAGEMENT CO/CA/ report?

13F filings are due quarterly, approximately 45 days after each quarter end.

How has PRIMECAP MANAGEMENT CO/CA/'s portfolio changed in Q1 2026?

View PRIMECAP MANAGEMENT CO/CA/'s latest portfolio changes, new positions, and exits for Q1 2026 on HoldingsIntel.

What is PRIMECAP MANAGEMENT CO/CA/'s investment strategy?

PRIMECAP MANAGEMENT CO/CA/ is classified as a Steady Compounder fund based on HoldingsIntel's Fund DNA analysis of 6 behavioral dimensions.

HoldingsIntel

PRIMECAP MANAGEMENT CO/CA/ Holdings Q1 2026 - Portfolio & Conviction Scores | HoldingsIntel

PRIMECAP MANAGEMENT CO/CA/

Institutional investor · Portfolio as of Q1 2026

SEC EDGAR SourceSEC Filings

$127B

AUM

320

Positions

Q1 2026

Filing

Rating · 3.0

Quarterly Portfolio Change

Activity profile

$ moved · Q1'26

New15%Increased18%Decreased54%Exited14%

Composition

Equity vs derivatives

Equity100%Puts0%Calls0%

Holding period

Avg 5.3 years

<1Q2%1-4Q6%1-2Y9%2Y+83%

Q1 2026 Summary

Active quarter - 9 new positions, 8 exits, 75 increased. Top move: AZN (NEW, conviction 83). Portfolio: $127.0B across 320 positions.

Portfolio Allocation

Top holdings by portfolio weight

LLY6.68%

MU5.82%

GOOGL3.39%

AZN2.83%

KLAC2.83%

INTC2.63%

AMGN2.46%

NVDA2.36%

FDX2.33%

BIIB2.13%

Other2.12%

Position Outcomes

Best and worst performing positions by estimated return

Top Winners

MU30Q held

MICRON TECHNOLOGY INC

Avg $31.49 · $15.6B est. P&L

Est. P&L

+2260.59%

FLEX30Q held

FLEXTRONICS INTL LTD

Avg $6.06 · $3.3B est. P&L

Est. P&L

+2175.14%

KLAC30Q held

KLA CORP

Avg $80.81 · $4.2B est. P&L

Est. P&L

+2152.82%

Top Losers

Upgrade to Pro to see the worst-performing positions.

View plans

Cost basis estimates based on full filing history using quarter-end prices. Actual transaction prices are not disclosed in 13F filings.

Top Holdings320 positions

Export CSV(Pro)

Activity:

Stock	Shares	Value	Weight	Price Trend	Avg Buy	Est. P&L	Held	Conviction
LLY ELI LILLY & CO	9.2M	$8.5B	6.7%	—	$103.84	+867.72%	30 qtrssince 2018-Q4	Decreased 0
MU MICRON TECHNOLOGY INC	21.9M	$7.4B	5.8%	—	$31.49	+2260.59%	30 qtrssince 2018-Q4	Decreased 0
GOOGL ALPHABET INC	15M	$4.3B	3.4%	—	$96.25	+312.50%	30 qtrssince 2018-Q4	Decreased 0
AZN ASTRAZENECA PLC	18.2M	$3.6B	2.8%	—	$201.76	-10.00%	1 qtr	New 83
KLAC KLA CORP	2.4M	$3.6B	2.8%	—	$80.81	+2152.82%	30 qtrssince 2018-Q4	Decreased 0
INTC INTEL CORP	75.8M	$3.3B	2.6%	—	$37.69	+188.62%	30 qtrssince 2018-Q4	Decreased 0
AMGN AMGEN INC	8.9M	$3.1B	2.5%	—	$153.34	+112.80%	30 qtrssince 2018-Q4	Decreased 0
NVDA NVIDIA CORPORATION	17.2M	$3B	2.4%	—	$112.03	+105.45%	30 qtrssince 2018-Q4	Decreased 0
FDX FEDEX CORP	8.3M	$3B	2.3%	—	$145.69	+157.11%	30 qtrssince 2018-Q4	Decreased 0
BIIB BIOGEN INC	14.8M	$2.7B	2.1%	—	$291.55	-33.82%	30 qtrssince 2018-Q4	Decreased 0
Showing 10 of 320 results.310 more with Pro.PROUpgrade to see all →