Head-to-head comparison

Bill Ackman vs Lee Ainslie

Bill Ackman

Pershing Square Capital

Q8/10

"Concentrated bets on high-quality businesses with activist catalysts."

8 positionsSince 2004

Lee Ainslie

Maverick Capital

Q8/10

"Long-short equity, deep fundamental, team-based research."

5 positionsSince 1993

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Recent moves — Q2 2026

Latest quarter activity for each manager.

No tracked moves for Bill this quarter.

Lee Ainslie

NSCADD +500%
COFADD +489%
GOOGLADD +486%
UNPADD +250%
TDGADD +216%
ASMLADD +150%
LYVADD +144%
WBDNEW
KEYSNEW
XYZNEW
FLEXNEW
TTMINEW
GOOGNEW
PFGCNEW
SYYNEW
ARESNEW
SPCXNEW
SPYNEW
APLDNEW
BLCONEW

+ 20 more moves this quarter (showing the 20 highest-conviction)

Data sourced from 13F filings with the SEC. Overlap in top positions is a concrete consensus signal, not investment advice.

Deep dive

Reading for your research

Optional background reading on interpreting company disclosures and investing methods. These books do not validate a signal or predict returns.

Amazon affiliate links — as an Amazon Associate, HoldLens earns from qualifying purchases and membership trials at no extra cost to you. These are books we genuinely recommend. Not investment advice; always do your own research.

Benjamin Graham

The Intelligent Investor

The foundational text. Buffett calls it 'by far the best book about investing ever written.'

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Benjamin Graham & David Dodd

Security Analysis

The deep dive behind The Intelligent Investor — how to actually read a filing and value a business.

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See the full investing reading list