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Wallace Weitz

Weitz Investment Management

2026Q1 · filed May 14, 202649 positions · $1.43Btop-5 33%

2026Q1 brief

Weitz Investment Management's $1.43B portfolio stayed true to its quality-compounders philosophy while making a pointed pivot toward semiconductor exposure: new positions in ASML (0.51%), TSM (0.47%), and NVDA (0.43%) are modest in size but collectively signal a first-time foray into the chip-equipment and foundry complex, consistent with Weitz's long holding periods once conviction builds. MELI was nearly doubled (+116% to 0.97%), the most aggressive single add in the book. Meanwhile, significant trims across IEX (-32% to 3.50%), ODFL (-37% to 1.80%), GPN (-34%), and CDW (-36%) suggest reduced enthusiasm for industrials and payment infrastructure names that have lagged on fundamentals. The core remains anchored by BRK/B (9.33%), GOOG (6.54%), DHR (6.32%), and the V/MA payments duo (5.60%/5.13%). New addition IR (Ingersoll Rand, 0.75%) keeps one foot in quality industrials. Watch whether the semiconductor trio — ASML, TSM, NVDA — receive meaningful add-ons next quarter, which would confirm a structural allocation shift rather than exploratory toe-dipping.

AI-generated. Not investment advice.

Holdings (49) · click any column to sort

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  • 1BRK/B
    9.3%
    $134M
    Berkshire Hathaway Inc-cl B
    this Q hold·40q
  • 2GOOG
    6.5%
    $94M
    Alphabet Inc-cl C
    this Q hold·40q
  • 3DHR
    6.3%
    $91M
    Danaher Corp
    this Q hold·35q
  • 4V
    5.6%
    $80M
    Visa Inc-class A Shares
    this Q hold·39q
  • 5MA
    5.1%
    $73M
    Mastercard Inc - A
    this Q hold·40q
  • 6AON
    4.8%
    $69M
    Aon Plc
    this Q hold·24q
  • 7MSFT
    4.4%
    $63M
    Microsoft Corp
    this Q hold·32q
  • 8META
    4.2%
    $60M
    Meta Platforms Inc-class A
    this Q hold·33q
  • 9TMO
    4.2%
    $59M
    Thermo Fisher Scientific Inc
    this Q hold·38q
  • 10VMC
    4.1%
    $58M
    Vulcan Materials CO
    this Q hold·34q
  • 11IEX
    3.5%
    $50M
    Idex Corp
    this Q -32%·25q
  • 12AMZN
    3.2%
    $46M
    Amazon.com Inc
    this Q hold·40q
  • 13HEI/A
    2.8%
    $40M
    Heico Corp-class A
    this Q hold·25q
  • 14TECH
    2.4%
    $34M
    Bio-techne Corp
    this Q hold·8q
  • 15ACN
    2.4%
    $34M
    Accenture Plc Ireland
    this Q hold·40q
  • 16ADI
    2.4%
    $34M
    Analog Devices Inc
    this Q hold·30q
  • 17EFX
    2.4%
    $34M
    Equifax Inc
    this Q hold·11q
  • 18TXN
    2.2%
    $31M
    Texas Instruments Inc
    this Q hold·40q
  • 19SIRI
    2.1%
    $30M
    Sirius XM Holdings Inc
    this Q hold·7q
  • 20LBRDK
    2.0%
    $29M
    Liberty Broadband-c
    this Q hold·40q
  • 21LH
    1.8%
    $26M
    Labcorp Holdings Inc
    this Q hold·8q
  • 22ODFL
    1.8%
    $26M
    Old Dominion Freight Line
    this Q -37%·10q
  • 23MLM
    1.6%
    $23M
    Martin Marietta Materials
    this Q hold·35q
  • 24GPN
    1.6%
    $23M
    Global Payments Inc
    this Q -34%·10q
  • 25CSGP
    1.5%
    $21M
    Costar Group Inc
    this Q -28%·25q
  • 26IDXX
    1.4%
    $20M
    Idexx Laboratories Inc
    this Q hold·5q
  • 27CRM
    1.1%
    $15M
    Salesforce Inc
    this Q hold·29q
  • 28ACIW
    1.1%
    $15M
    Aci Worldwide Inc
    this Q hold·40q
  • 29MELI
    1.0%
    $14M
    Mercadolibre Inc
    this Q +116%·3q
  • 30PRM
    0.9%
    $12M
    Perimeter Solutions Inc
    this Q hold·6q
  • 31LKQ
    0.8%
    $12M
    Lkq Corp
    this Q hold·27q
  • 32IR
    0.7%
    $11M
    Ingersoll-rand Inc
    this Q New·14q
  • 33EEFT
    0.7%
    $11M
    Euronet Worldwide Inc
    this Q hold·2q
  • 34ORCL
    0.6%
    $8M
    Oracle Corp
    this Q -21%·40q
  • 35ASML
    0.5%
    $7M
    Asml Hldg NV
    this Q New·1q
  • 36TSM
    0.5%
    $7M
    Taiwan Semiconductor-sp Adr
    this Q New·1q
  • 37LBRDA
    0.5%
    $7M
    Liberty Broadband-a
    this Q hold·40q
  • 38NVDA
    0.4%
    $6M
    Nvidia Corp
    this Q New·1q
  • 39CDW
    0.3%
    $4M
    Cdw Corp/de
    this Q -36%·3q
  • 40LIN
    0.2%
    $4M
    Linde Plc
    this Q hold·13q
  • 41VLTO
    0.2%
    $4M
    Veralto Corp
    this Q hold·10q
  • 42POOL
    0.2%
    $3M
    Pool Corp
    this Q New·1q
  • 43RGEN
    0.2%
    $3M
    Repligen Corp
    this Q New·1q
  • 44SPGI
    0.2%
    $3M
    S&p Global Inc
    this Q hold·25q
  • 45CMCSA
    0.1%
    $1M
    Comcast Corp-class A
    this Q -45%·40q
  • 46FTV
    0.1%
    $1M
    Fortive Corp
    this Q -50%·25q
  • 47FERG
    0.1%
    $1M
    Ferguson Enterprises Inc
    this Q New·1q
  • 48APH
    0.1%
    $1M
    Amphenol Corp-cl A
    this Q New·1q
  • 49CHTR
    <0.1%
    $140K
    Charter Communications Inc-a
    this Q hold·27q

All activity (2026Q1)

  • TRIMIEX
    3.5%
    Idex Corp
    Δ -32%·$50M
  • TRIMCSGP
    1.5%
    Costar Group Inc
    Δ -28%·$21M
  • TRIMGPN
    1.6%
    Global Payments Inc
    Δ -34%·$23M
  • TRIMODFL
    1.8%
    Old Dominion Freight Line
    Δ -37%·$26M
  • ADDMELI
    1.0%
    Mercadolibre Inc
    Δ +116%·$14M
  • EXITROP
    1.0%
    Roper Technologies Inc
    Δ -100%·$0
  • TRIMORCL
    0.6%
    Oracle Corp
    Δ -21%·$8M
  • NEWIR
    0.7%
    Ingersoll-rand Inc
    Δ +100%·$11M
  • NEWASML
    0.5%
    Asml Hldg NV
    Δ +100%·$7M
  • NEWTSM
    0.5%
    Taiwan Semiconductor-sp Adr
    Δ +100%·$7M
  • TRIMCDW
    0.3%
    Cdw Corp/de
    Δ -36%·$4M
  • NEWNVDA
    0.4%
    Nvidia Corp
    Δ +100%·$6M
  • EXITIT
    0.4%
    Gartner Inc
    Δ -100%·$0
  • NEWPOOL
    0.2%
    Pool Corp
    Δ +100%·$3M
  • NEWRGEN
    0.2%
    Repligen Corp
    Δ +100%·$3M
  • TRIMCMCSA
    0.1%
    Comcast Corp-class A
    Δ -45%·$1M
  • TRIMFTV
    0.1%
    Fortive Corp
    Δ -50%·$1M
  • EXITDEO
    0.1%
    Diageo Plc-sponsored Adr
    Δ -100%·$0
  • NEWFERG
    0.1%
    Ferguson Enterprises Inc
    Δ +100%·$1M
  • NEWAPH
    0.1%
    Amphenol Corp-cl A
    Δ +100%·$1M

Long US equity 13F-HR filings only — no shorts, no derivatives. SEC filings at EDGAR (CIK 0000883965). Not investment advice.