Skip to content
Esta página está disponible en españolCambiar →

Primecap Management portfolio

Investment firm

Portfolio as of Jun 30, 2026 (Q2 2026) · filed with the SEC on Aug 14, 2026 · data updated on Nov 5, 2026 · Q2 2026 13F (filing) ↗ · all its 13F filings ↗

A 13F shows the portfolio at quarter-end and is filed up to 45 days later: these are not real-time positions and they may have changed.

Primecap Management reported a $169 bn portfolio of 323 companies (324 positions, counting each share class separately) to the SEC as of the end of Q2 2026. Its largest positions are MU, LLY, INTC.

Stock portfolio
$169 bn
Companies
323
324 positions (by CUSIP)Top 10: 43%
Turnover
16%
Copying its 13F, 5 years
—
Not calculated: not counted as a concentrated manager

Sections with a free account

What it reported after the quarter end (Q2 2026)

The 13F shows the portfolio as of Jun 30, 2026. Since then Primecap Management has filed these own trades with the SEC (Form 4, when it owns more than 10% of a company or holds a role in it) and stakes above 5% (13D and 13G). It is not everything it did: only what it must report before the next 13F.

What changed this quarter

187 positions with a change (6 new, 69 added to, 109 trimmed, 3 sold); also, 2 entered through an IPO, 3 exited through an acquisition or merger, 2 entered through a spin-off. 2 are listed here: those of 0.5 points of the portfolio or more (up to 12).

The figure on the right: for positions added to or trimmed, the change in the number of shares (%); for new and sold ones, the points of the portfolio moved (pp). Below, the portfolio weight before → after. Traded weight: what it bought or sold, excluding price effects.

Top holdings

Portfolio by sector

  • ● Information Technology 42%
  • ● Health Care 21%
  • ● Industrials 12%
  • ● Consumer Discretionary 9%
  • ● Financials 7%
  • ● Communication Services 6%
  • ● Energy 1%
  • ● Consumer Staples 1%
  • ● Materials 1%

Stakes above 5% (13D/13G)

Companies where this filer reported holding 5% or more of the shares. It is the figure from its latest filing on each one; history since December 2024.

How we classify it

Not counted as a concentrated manager: its portfolio is not within 5 to 100 positions; its top 10 positions are under 45%. Its portfolio is shown all the same, but it is left out of manager counts, the consensus and the ranking. How this is decided

Follow Primecap Management for free

When the next 13F is filed, we email you (if you turn it on) and it shows in your list. No credit card.

Follow Primecap Management