StockSpill

Notifications

Coming soon

InsightsAnalysisInvestorsCongressWatchlist
Account

Superinvestors

  • All superinvestors
  • Warren Buffett
  • Value investors
  • Activist investors
  • Smart-money insights

Congress trades

  • All congress trades
  • Senate trades
  • House trades
  • Nancy Pelosi
  • Donald Trump

Stocks

  • Browse all stocks
  • NVDA holders
  • AAPL holders
  • TSLA holders
  • MSFT holders

Tools

  • Analysis hub
  • DCF calculator
  • Compound interest
  • Treasury yields
  • Macro data

© 2026 StockSpill. Data from SEC EDGAR filings. Logos by Parqet.

PricingRead termsRead privacy policyNotes on Data
StockSpill

Notifications

Coming soon

InsightsAnalysisInvestorsCongressWatchlist
Account

Superinvestors

  • All superinvestors
  • Warren Buffett
  • Value investors
  • Activist investors
  • Smart-money insights

Congress trades

  • All congress trades
  • Senate trades
  • House trades
  • Nancy Pelosi
  • Donald Trump

Stocks

  • Browse all stocks
  • NVDA holders
  • AAPL holders
  • TSLA holders
  • MSFT holders

Tools

  • Analysis hub
  • DCF calculator
  • Compound interest
  • Treasury yields
  • Macro data

© 2026 StockSpill. Data from SEC EDGAR filings. Logos by Parqet.

PricingRead termsRead privacy policyNotes on Data
Home › Superinvestors › Leopold Aschenbrenner › vs Bill Ackman

Leopold Aschenbrenner vs Bill Ackman

Side-by-side comparison of two superinvestors' latest disclosed 13F portfolios — what they agree on, where they part ways.

Leopold Aschenbrenner
Picks: +40.4% (1Y)
Bill Ackman
Picks: +4.7% (1Y)

Shared holdings (top 25)

StockLeopold Aschenbrenner %Bill Ackman %
No shared positions.

Biggest disagreements

Only in Leopold Aschenbrenner's book
  • SANDISK CORP28.0%
  • MICRON TECHNOLOGY INC27.5%
  • BLOOM ENERGY CORP9.4%
  • TAIWAN SEMICONDUCTOR MANUFAC6.2%
  • NEBIUS GROUP N.V.6.1%
  • COREWEAVE INC3.7%
  • CORE SCIENTIFIC INC NEW3.3%
  • STMICROELECTRONICS2.9%
Only in Bill Ackman's book
  • UBER TECHNOLOGIES INC12.7%
  • BROOKFIELD CORP12.6%
  • MICROSOFT CORP11.9%
  • AMAZON COM INC10.5%
  • HOWARD HUGHES HOLDINGS INC10.2%
  • RESTAURANT BRANDS INTL INC9.6%
  • META PLATFORMS INC9.2%
  • VISA INC5.8%
Profile
Leopold Aschenbrenner →
Situational Awareness LP · $20.24B
Picks: +40.4% (1Y)
Profile
Bill Ackman →
Pershing Square Capital Management, L.P. · $19.47B
Picks: +4.7% (1Y)

More comparisons & related to Leopold Aschenbrenner

Compare with other superinvestors

  • Leopold Aschenbrenner vs Warren Buffett
  • Leopold Aschenbrenner vs George Soros
  • Leopold Aschenbrenner vs Ray Dalio
  • Leopold Aschenbrenner vs Bill Ackman

Other superinvestors

  • Warren Buffett
  • George Soros
  • Ray Dalio
  • Bill Ackman
  • Michael Burry
  • Mohnish Pabrai

By investing strategy

  • Activist investors
  • Global macro investors
  • Growth & innovation investors

Leopold Aschenbrenner vs Bill Ackman: 13F overlap

Leopold Aschenbrenner runs Situational Awareness LP ($20.24B disclosed). Bill Ackman runs Pershing Square Capital Management, L.P. ($19.47B disclosed). They share 0 common positions, with 26 names unique to Leopold Aschenbrenner's book and 14 unique to Bill Ackman's book.

Use the tables above to spot conviction overlaps (where both managers go large on the same name) and contrarian disagreements (where one is buying while the other has nothing).

Key takeaways

  • 0 shared positions.
  • Leopold Aschenbrenner-only: 26 names.
  • Bill Ackman-only: 14 names.
Home › Superinvestors › Leopold Aschenbrenner › vs Bill Ackman

Leopold Aschenbrenner vs Bill Ackman

Side-by-side comparison of two superinvestors' latest disclosed 13F portfolios — what they agree on, where they part ways.

Leopold Aschenbrenner
Picks: +40.4% (1Y)
Bill Ackman
Picks: +4.7% (1Y)

Shared holdings (top 25)

StockLeopold Aschenbrenner %Bill Ackman %
No shared positions.

Biggest disagreements

Only in Leopold Aschenbrenner's book
  • SANDISK CORP28.0%
  • MICRON TECHNOLOGY INC27.5%
  • BLOOM ENERGY CORP9.4%
  • TAIWAN SEMICONDUCTOR MANUFAC6.2%
  • NEBIUS GROUP N.V.6.1%
  • COREWEAVE INC3.7%
  • CORE SCIENTIFIC INC NEW3.3%
  • STMICROELECTRONICS2.9%
Only in Bill Ackman's book
  • UBER TECHNOLOGIES INC12.7%
  • BROOKFIELD CORP12.6%
  • MICROSOFT CORP11.9%
  • AMAZON COM INC10.5%
  • HOWARD HUGHES HOLDINGS INC10.2%
  • RESTAURANT BRANDS INTL INC9.6%
  • META PLATFORMS INC9.2%
  • VISA INC5.8%
Profile
Leopold Aschenbrenner →
Situational Awareness LP · $20.24B
Picks: +40.4% (1Y)
Profile
Bill Ackman →
Pershing Square Capital Management, L.P. · $19.47B
Picks: +4.7% (1Y)

More comparisons & related to Leopold Aschenbrenner

Compare with other superinvestors

  • Leopold Aschenbrenner vs Warren Buffett
  • Leopold Aschenbrenner vs George Soros
  • Leopold Aschenbrenner vs Ray Dalio
  • Leopold Aschenbrenner vs Bill Ackman

Other superinvestors

  • Warren Buffett
  • George Soros
  • Ray Dalio
  • Bill Ackman
  • Michael Burry
  • Mohnish Pabrai

By investing strategy

  • Activist investors
  • Global macro investors
  • Growth & innovation investors

Leopold Aschenbrenner vs Bill Ackman: 13F overlap

Leopold Aschenbrenner runs Situational Awareness LP ($20.24B disclosed). Bill Ackman runs Pershing Square Capital Management, L.P. ($19.47B disclosed). They share 0 common positions, with 26 names unique to Leopold Aschenbrenner's book and 14 unique to Bill Ackman's book.

Use the tables above to spot conviction overlaps (where both managers go large on the same name) and contrarian disagreements (where one is buying while the other has nothing).

Key takeaways

  • 0 shared positions.
  • Leopold Aschenbrenner-only: 26 names.
  • Bill Ackman-only: 14 names.