Filer Snapshot

PRIMECAP MANAGEMENT CO/CA/

CIK 0000763212. SEC filing timeline plus parsed ownership intelligence from 13F, 13D/G, and Forms 3/4/5 where available.

Entity type

Company

Total filings

88

Latest filing

13 May 2026

Industry

n/a

Filing-backed research brief

Start with the SEC data that changes for this CIK

Latest signal: 13F-HR for Q1 2026. Each card links back to the PortfolioSavvy page where the filing evidence is closest.

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Latest 13F portfolio

$127.01B

320 holdings for Q1 2026

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Largest parsed holding

LLY

$8.48B reported value

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13D/G large stake

XMTR

31 Mar 2026 · 13% ownership

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Source: SEC Schedule 13D/G

SCHEDULE 13G/A filed on 13 May 2026 for CIK 0000763212.

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Ownership signals CIK-linked ownership evidence from parsed SEC filings. 1 signal
Parsed SEC ownership signals

Parsed SEC ownership coverage

These bars compare filing-backed value available in each disclosure family. Read them as separate lenses, not as one combined ownership total.

13F portfolio$127.01B

Quarterly institutional holdings reported on Form 13F.

Latest reported 13F value

13F
$127.01B

Reported market value from the latest parsed Form 13F information table; this is not total assets under management.

Largest 13F holdings

13F
LLY MU GOOGL AZN KLAC
+15 moreINTC AMGN NVDA FDX BIIB MSFT AMZN BABA TSLA SCHW BSX ROST TXN LUV FLEX

Largest symbols in the latest parsed Form 13F information table.

Largest 13F holdings

Largest symbols in the latest parsed Form 13F information table.

LLY MU GOOGL AZN KLAC INTC AMGN NVDA
+12 moreFDX BIIB MSFT AMZN BABA TSLA SCHW BSX ROST TXN LUV FLEX

Largest active 13G stakes

Passive or institutional large-stake positions disclosed in parsed Schedule 13G filings.

FDX BIIB UAL LUV FLEX RJF
+14 moreNTAP ACM ELAN BMRN MAT NXT MKTX AAL RYTM GKOS XMTR WHR LIVN GRAL
How to read these SEC ownership signals
  • Read each filing family separately: 13F portfolios, 13D/G large stakes, and Forms 3/4/5 owner positions answer different SEC disclosure questions.
  • Open the linked research path when you need the filing, CIK, issuer, or CUSIP trail behind a value.
At a glance Names, identifiers, and filing context for this profile. 1 identity field
Business address
177 East Colorado Blvd., 11 Th Floor, Pasadena, CA, 91105

Filer intelligence

What SEC filings say about PRIMECAP MANAGEMENT CO/CA/

A compact read of parsed XML filings. 13F, 13D/G, and Forms 3/4/5 are shown separately because they answer different ownership questions.

Open 13F portfolio Save filer

Quick read

  • Latest parsed 13F shows $127.01B across 320 reported holdings for Q1 2026.
  • Largest parsed 13F holding: LLY at $8.48B.
  • 5 recent 13D/G stake rows found; top row is XMTR at 13% ownership.

SEC source mix

Counts show available parsed rows, not one combined ownership total.

XML parsed
13F portfolio 320 rows

Quarterly institutional portfolio holdings.

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13D/G stakes 5 rows

Beneficial ownership and large-stake disclosures.

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Forms 3/4/5 No rows yet

Officer, director, and 10% owner holdings or transactions.

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Top parsed 13F holdings

Visual share of the latest parsed 13F portfolio. Values are reported market value, not a recommendation.

Q1 2026 - 11 May 2026

Top 5 concentration

22%

Share of latest parsed 13F value represented by the visible holdings below.

Top 5 reported value

$27.36B

Compared with $127.01B total 13F value.

Top 5 net change

+$1.88B

Position-value change inside the visible top holdings only.

13F concentration map

A simple visual split of the latest parsed 13F portfolio.

Largest add: AZN · Largest trim: AZN

LLY MU GOOGL AZN KLAC Other holdings

LLY

6.7%

Eli Lilly & Co

$8.48B

MU

5.8%

Micron Technology Inc

$7.39B

GOOGL

3.4%

Alphabet Inc

$4.31B

AZN

2.8%

Astrazeneca Plc

$3.59B

KLAC

2.8%

Kla Corp

$3.59B

13D/G large-stake context

XMTR

31 Mar 2026 · COM

13%
Issuer page 13D/G history

LUV

31 Mar 2026 · COM

9.6%
Issuer page 13D/G history

ELAN

31 Mar 2026 · COM

9.2%
Issuer page 13D/G history

WHR

31 Mar 2026 · COM

5.8%
Issuer page 13D/G history

Latest update

What changed recently for PRIMECAP MANAGEMENT CO/CA/

New filing available

Latest Schedule 13D/G period: 31 Mar 2026. Open the source-backed page to inspect the fresh filing or facts context.

Update date

13 May 2026

Page type

Filer profile

Latest period

31 Mar 2026

Schedule 13D/G context is visible from filings filed on 13 May 2026.

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Benchmark Context

Benchmark context for this company

PRIMECAP MANAGEMENT CO/CA/ has a source-backed company facts view where you can compare the latest reported metrics with its own recent history and with peer rankings for the same metric.

Compared with

Start on the facts page for period-to-period context, then open a metric ranking when you want to compare the same reported fact across other SEC-reporting companies.

Why this is notable

Latest Schedule 13D/G period: 31 Mar 2026. That gives you a fresh baseline before you compare this company with peers.

  • Peer comparisons stay conservative: same metric, compatible units, latest valid company row only.
  • Open the facts page first if you want the cleanest path to verification.

Benchmark context is only shown where the app has enough comparable SEC-backed data to keep the interpretation honest.

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SEC filing record

CIK 0000763212 filing coverage

Start with this filing record, then use the linked ownership pages when parsed 13F, 13D/G, Forms 3/4/5, or facts data exists for this CIK.

SEC filings
88
First seen
13 Feb 2014
Latest filing
13 May 2026
Entity
Company

Observed form types

13F-HR SCHEDULE 13G SCHEDULE 13G/A

CIK-linked evidence first

PRIMECAP MANAGEMENT CO/CA/ SEC filings PRIMECAP MANAGEMENT CO/CA/ 13F portfolio PRIMECAP MANAGEMENT CO/CA/ 13D/G history Open SEC filing index

Latest Filings

Showing the latest 12 of 88 SEC filings for PRIMECAP MANAGEMENT CO/CA/.

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SCHEDULE 13G/A

SCHEDULE 13G/A filing

Filing date
13 May 2026
Reporting date
Not listed
SEC evidence
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SCHEDULE 13G/A

SCHEDULE 13G/A filing

Filing date
13 May 2026
Reporting date
Not listed
SEC evidence
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SCHEDULE 13G/A

SCHEDULE 13G/A filing

Filing date
13 May 2026
Reporting date
Not listed
SEC evidence
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SCHEDULE 13G/A

SCHEDULE 13G/A filing

Filing date
13 May 2026
Reporting date
Not listed
SEC evidence
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13F-HR

13F-HR filing

Filing date
11 May 2026
Reporting date
31 Mar 2026
SEC evidence
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SCHEDULE 13G/A

SCHEDULE 13G/A filing

Filing date
12 Feb 2026
Reporting date
Not listed
SEC evidence
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SCHEDULE 13G/A

SCHEDULE 13G/A filing

Filing date
12 Feb 2026
Reporting date
Not listed
SEC evidence
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SCHEDULE 13G/A

SCHEDULE 13G/A filing

Filing date
12 Feb 2026
Reporting date
Not listed
SEC evidence
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13F-HR

13F-HR filing

Filing date
11 Feb 2026
Reporting date
31 Dec 2025
SEC evidence
Open document Open filing
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SCHEDULE 13G/A

SCHEDULE 13G/A filing

Filing date
11 Feb 2026
Reporting date
Not listed
SEC evidence
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SCHEDULE 13G/A

SCHEDULE 13G/A filing

Filing date
11 Feb 2026
Reporting date
Not listed
SEC evidence
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SCHEDULE 13G/A

SCHEDULE 13G/A filing

Filing date
11 Feb 2026
Reporting date
Not listed
SEC evidence
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Next action
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