InvestorLens

Bill Ackman vs Seth Klarman

Pershing Square vs Baupost Group · latest 13F filings compared side-by-side

13F data may be delayed up to 45 days
For educational research only.InvestorLens analyzes public regulatory filings (SEC EDGAR, STOCK Act PTRs) that may be delayed by 45 days or more. Information shown is historical and is not financial, legal, or tax advice, nor a recommendation or solicitation to buy or sell any security. Always do your own research.
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Bill Ackman

$19.5B
Q2 2026 · 14 positions

Held by both

$6.7B
3 tickers · 26% / 30% of each book

Seth Klarman

$5.4B
Q2 2026 · 23 positions

Portfolio Analytics Comparison

MetricBill AckmanSeth Klarman
Concentration Score94/10075/100
ClassificationHighly ConcentratedHighly Concentrated
Top 5 Holdings58%50%
Top 10 Holdings94%75%
Positions1423
Consumer Discretionary32.8%25.5%
Unclassified24.4%29.2%
Financial Services16.8%11.2%
Communication Services14.0%10.7%
Information Technology11.9%—
Industrials—12.3%

Held by both

TickerCompanyAckman sharesAckman valueKlarman sharesKlarman value
AMZNAMAZON COM INC8.6M$2B3.7M$892.3M
QSRRESTAURANT BRANDS INTL INC25.8M$1.9B6.8M$489.6M
VVISA INC3.3M$1.1B701.4K$240.6M

Only Bill Ackman

11 positions not in Klarman's book

  • UBER
    UBER TECHNOLOGIES INC
    $2.5B
  • BN
    BROOKFIELD CORP
    $2.4B
  • MSFT
    MICROSOFT CORP
    $2.3B
  • HHH
    HOWARD HUGHES HOLDINGS INC
    $2B
  • META
    META PLATFORMS INC
    $1.8B
  • MA
    MASTERCARD INCORPORATED
    $1.1B
  • SPGI
    S&P GLOBAL INC
    $1.1B
  • NFLX
    NETFLIX INC.
    $934M
  • PSUS
    PERSHING SQUARE USA LTD
    $149.5M
  • SEG
    SEAPORT ENTMT GROUP INC
    $133.6M
  • HTZ
    HERTZ GLOBAL HLDGS INC
    $34M

Only Seth Klarman

20 positions not in Ackman's book

  • ELV
    ELEVANCE HEALTH INC FORMERLY
    $493.1M
  • GOOGL
    ALPHABET INC
    $484.7M
  • FERG
    FERGUSON ENTERPRISES INC
    $344.3M
  • GPC
    GENUINE PARTS CO
    $332.3M
  • UNP
    UNION PAC CORP
    $322.4M
  • WCC
    WESCO INTL INC
    $229M
  • AON
    AON PLC
    $227.9M
  • TFX
    TELEFLEX INCORPORATED
    $178.6M
  • NCLH
    NORWEGIAN CRUISE LINE HLDGS
    $163.2M
  • MOH
    MOLINA HEALTHCARE INC
    $144.9M
  • CME
    CME GROUP INC
    $136.7M
  • HLF
    HERBALIFE LTD
    $121.8M
  • EXP
    EAGLE MATLS INC
    $119.4M
  • GDS
    GDS HLDGS LTD
    $113.2M
  • COLD
    AMERICOLD REALTY TRUST INC
    $107.4M
  • LBTYA
    LIBERTY GLOBAL LTD
    $94M
  • Ticker unavailableCUSIP 40054J109
    GRUPO AEROMEXICO SAB DE CV
    $87.8M
  • AXTA
    AXALTA COATING SYS LTD
    $43.6M
  • DNOW
    DNOW INC
    $36.2M
  • PS
    PERSHING SQUARE INC
    $12.9M