GuruTrack

Stephen Mandel

⇄ Compare holdings
Summary
Stephen Mandel disclosed 36 positions in its latest 13F (2026 Q1), a portfolio value of ~$12.54B, across 8 sectors; top holdings VST, ASML, CRS. This quarter: 11 new, 14 added, 11 trimmed, 7 closed. Data from public SEC 13F filings, delayed up to ~45 days.
Portfolio value$12.54B
Holdings36incl. options
Sectors8
Latest filing2026 Q1
New11$3.74B
Added14$1.28B
Trimmed11$2.67B
Sold7$3.41B

Guru playbook

This quarter at a glance
Balanced bookDiversifiedHigh turnover · active

Circle of competence (by value)

Technology19%
Energy7%
Financials4%

Biggest new buy

TERTERADYNE INC

New buy · of book 4.4%

Biggest add

VSTVISTRA CORP

Added +18.7%

Biggest exit

AVGOBROADCOM INC

Exited · was ~$598.83M

⚠️ Tags are auto-derived from public 13F holdings.

Position-weight treemap

By share of portfolio value (2026 Q1, common stock only, top 25).

Sector breakdown

By value (positions with no sector fall under “Uncategorized”).

Data from public SEC 13F & STOCK Act filings, delayed up to ~45 days, partial holdings only — for research, not investment advice.