Wallace Weitz
Weitz Investment Management
Wallace Weitz (Weitz Investment Management) discloses a $1.43B portfolio across 49 US-listed positions in the latest 13F filing (2026Q1, filed May 14, 2026). The largest holding is BRK/B at 9.3% of the book. The biggest move of the quarter: trimmed the IEX share count by 32% (position now $50M). Latticework's clone backtest puts this 13F book at -7.5%/yr vs SPY over 12.0 years.
About Wallace Weitz
Wallace Weitz founded Omaha-based Weitz Investment Management in 1983 and has run concentrated, patient value strategies there for four decades — a lineage that places him squarely in the Graham-Buffett tradition, unsurprising given his geographic and intellectual proximity to Berkshire Hathaway. The current 49-position book, with roughly a third of assets in the top five names and BRK/B as the largest holding, reflects the firm's preference for durable-moat businesses held at what Weitz considers rational prices relative to private-market value. The style is domestic-equity-centric, long-only, and low-turnover, so the 13F is a reasonably faithful picture of the portfolio — there is no known derivatives or short overlay that would create material hidden exposure. Readers should note, however, that the 45-day disclosure lag plus quarterly rebalancing means the clone backtest's -7.5% annual excess return versus SPY over twelve years reflects execution friction and timing slippage as much as any fundamental divergence from the strategy itself.
2026Q1 brief
Weitz Investment Management's $1.43B book struck a notably tech-and-semis tone in 2026Q1, initiating six new positions led by ASML (0.51%), TSM (0.47%), and NVDA (0.43%) — a coordinated semiconductor supply-chain cluster that's new territory for this traditionally quality-compounders shop. IR (0.75%) adds industrial exposure. Meanwhile, the doubling of MELI (+116.2% to 0.97%) deepens LatAm fintech conviction. The trim activity tells a consistent story: IEX (-32.5%), ODFL (-36.8%), GPN (-33.7%), and CDW (-35.6%) were all cut meaningfully, suggesting Weitz is recycling capital from cyclical industrials and legacy tech services into secular compounders. The core remains intact — BRK/B at 9.33%, GOOG at 6.54%, DHR at 6.32%, V at 5.60% — with the top-5 at 32.9%. The semiconductor initiations are small (sub-1% each) but directionally significant for a manager not historically known for chip exposure. Watch whether ASML, TSM, and NVDA are meaningfully sized up next quarter or remain token positions.
AI-generated. Not investment advice.
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Holdings (49) · click any column to sort
| #↑ | Ticker | Issuer | % Port. | This Q | History | Value |
|---|---|---|---|---|---|---|
| 1 | BRK/B | 9.3% | $134M | |||
| 2 | GOOG | 6.5% | $94M | |||
| 3 | DHR | 6.3% | $91M | |||
| 4 | V | 5.6% | $80M | |||
| 5 | MA | 5.1% | $73M | |||
| 6 | AON | 4.8% | $69M | |||
| 7 | MSFT | 4.4% | $63M | |||
| 8 | META | 4.2% | $60M | |||
| 9 | TMO | 4.2% | $59M | |||
| 10 | VMC | 4.1% | $58M | |||
| 11 | IEX | 3.5% | $50M | |||
| 12 | AMZN | 3.2% | $46M | |||
| 13 | HEI/A | 2.8% | $40M | |||
| 14 | TECH | 2.4% | $34M | |||
| 15 | ACN | 2.4% | $34M | |||
| 16 | ADI | 2.4% | $34M | |||
| 17 | EFX | 2.4% | $34M | |||
| 18 | TXN | 2.2% | $31M | |||
| 19 | SIRI | 2.1% | $30M | |||
| 20 | LBRDK | 2.0% | $29M | |||
| 21 | LH | 1.8% | $26M | |||
| 22 | ODFL | 1.8% | $26M | |||
| 23 | MLM | 1.6% | $23M | |||
| 24 | GPN | 1.6% | $23M | |||
| 25 | CSGP | 1.5% | $21M | |||
| 26 | IDXX | 1.4% | $20M | |||
| 27 | CRM | 1.1% | $15M | |||
| 28 | ACIW | 1.1% | $15M | |||
| 29 | MELI | 1.0% | $14M | |||
| 30 | PRM | 0.9% | $12M | |||
| 31 | LKQ | 0.8% | $12M | |||
| 32 | IR | 0.7% | $11M | |||
| 33 | EEFT | 0.7% | $11M | |||
| 34 | ORCL | 0.6% | $8M | |||
| 35 | ASML | 0.5% | $7M | |||
| 36 | TSM | 0.5% | $7M | |||
| 37 | LBRDA | 0.5% | $7M | |||
| 38 | NVDA | 0.4% | $6M | |||
| 39 | CDW | 0.3% | $4M | |||
| 40 | LIN | 0.2% | $4M | |||
| 41 | VLTO | 0.2% | $4M | |||
| 42 | POOL | 0.2% | $3M | |||
| 43 | RGEN | 0.2% | $3M | |||
| 44 | SPGI | 0.2% | $3M | |||
| 45 | CMCSA | 0.1% | $1M | |||
| 46 | FTV | 0.1% | $1M | |||
| 47 | FERG | 0.1% | $1M | |||
| 48 | APH | 0.1% | $1M | |||
| 49 | CHTR | <0.1% | $140K |
- port9.3%val$134MBerkshire Hathaway Inc-cl Bthis Q hold·40q
- 2GOOGport6.5%val$94MAlphabet Inc-cl Cthis Q hold·40q
- 3DHRport6.3%val$91MDanaher Corpthis Q hold·35q
- 4Vport5.6%val$80MVisa Inc-class A Sharesthis Q hold·39q
- 5MAport5.1%val$73MMastercard Inc - Athis Q hold·40q
- 6AONport4.8%val$69MAon Plcthis Q hold·24q
- 7MSFTport4.4%val$63MMicrosoft Corpthis Q hold·32q
- 8METAport4.2%val$60MMeta Platforms Inc-class Athis Q hold·33q
- 9TMOport4.2%val$59MThermo Fisher Scientific Incthis Q hold·38q
- 10VMCport4.1%val$58MVulcan Materials COthis Q hold·34q
- 11IEXport3.5%val$50MIdex Corpthis Q -32%·25q
- 12AMZNport3.2%val$46MAmazon.com Incthis Q hold·40q
- 13HEI/Aport2.8%val$40MHeico Corp-class Athis Q hold·25q
- 14TECHport2.4%val$34MBio-techne Corpthis Q hold·8q
- 15ACNport2.4%val$34MAccenture Plc Irelandthis Q hold·40q
- 16ADIport2.4%val$34MAnalog Devices Incthis Q hold·30q
- 17EFXport2.4%val$34MEquifax Incthis Q hold·11q
- 18TXNport2.2%val$31MTexas Instruments Incthis Q hold·40q
- 19SIRIport2.1%val$30MSirius XM Holdings Incthis Q hold·7q
- 20LBRDKport2.0%val$29MLiberty Broadband-cthis Q hold·40q
- 21LHport1.8%val$26MLabcorp Holdings Incthis Q hold·8q
- 22ODFLport1.8%val$26MOld Dominion Freight Linethis Q -37%·10q
- 23MLMport1.6%val$23MMartin Marietta Materialsthis Q hold·35q
- 24GPNport1.6%val$23MGlobal Payments Incthis Q -34%·10q
- 25CSGPport1.5%val$21MCostar Group Incthis Q -28%·25q
- 26IDXXport1.4%val$20MIdexx Laboratories Incthis Q hold·5q
- 27CRMport1.1%val$15MSalesforce Incthis Q hold·29q
- 28ACIWport1.1%val$15MAci Worldwide Incthis Q hold·40q
- 29MELIport1.0%val$14MMercadolibre Incthis Q +116%·3q
- 30PRMport0.9%val$12MPerimeter Solutions Incthis Q hold·6q
- 31LKQport0.8%val$12MLkq Corpthis Q hold·27q
- 32IRport0.7%val$11MIngersoll-rand Incthis Q New·14q
- 33EEFTport0.7%val$11MEuronet Worldwide Incthis Q hold·2q
- 34ORCLport0.6%val$8MOracle Corpthis Q -21%·40q
- 35ASMLport0.5%val$7MAsml Hldg NVthis Q New·—1q
- 36TSMport0.5%val$7MTaiwan Semiconductor-sp Adrthis Q New·—1q
- 37LBRDAport0.5%val$7MLiberty Broadband-athis Q hold·40q
- 38NVDAport0.4%val$6MNvidia Corpthis Q New·—1q
- 39CDWport0.3%val$4MCdw Corp/dethis Q -36%·3q
- 40LINport0.2%val$4MLinde Plcthis Q hold·13q
- 41VLTOport0.2%val$4MVeralto Corpthis Q hold·10q
- 42POOLport0.2%val$3MPool Corpthis Q New·—1q
- 43RGENport0.2%val$3MRepligen Corpthis Q New·—1q
- 44SPGIport0.2%val$3MS&p Global Incthis Q hold·25q
- 45CMCSAport0.1%val$1MComcast Corp-class Athis Q -45%·40q
- 46FTVport0.1%val$1MFortive Corpthis Q -50%·25q
- 47FERGport0.1%val$1MFerguson Enterprises Incthis Q New·—1q
- 48APHport0.1%val$1MAmphenol Corp-cl Athis Q New·—1q
- 49CHTRport<0.1%val$140KCharter Communications Inc-athis Q hold·27q
All activity (2026Q1)
| Ticker | Issuer | Move | % Port. | Δ Shares | Value |
|---|---|---|---|---|---|
| IEX | Idex Corp | TRIM | 3.5% | -32% | $50M |
| CSGP | Costar Group Inc | TRIM | 1.5% | -28% | $21M |
| GPN | Global Payments Inc | TRIM | 1.6% | -34% | $23M |
| ODFL | Old Dominion Freight Line | TRIM | 1.8% | -37% | $26M |
| MELI | Mercadolibre Inc | ADD | 1.0% | +116% | $14M |
| ROP | Roper Technologies Inc | EXIT | 1.0% | -100% | $0 |
| ORCL | Oracle Corp | TRIM | 0.6% | -21% | $8M |
| IR | Ingersoll-rand Inc | NEW | 0.7% | +100% | $11M |
| ASML | Asml Hldg NV | NEW | 0.5% | +100% | $7M |
| TSM | Taiwan Semiconductor-sp Adr | NEW | 0.5% | +100% | $7M |
| CDW | Cdw Corp/de | TRIM | 0.3% | -36% | $4M |
| NVDA | Nvidia Corp | NEW | 0.4% | +100% | $6M |
| IT | Gartner Inc | EXIT | 0.4% | -100% | $0 |
| POOL | Pool Corp | NEW | 0.2% | +100% | $3M |
| RGEN | Repligen Corp | NEW | 0.2% | +100% | $3M |
| CMCSA | Comcast Corp-class A | TRIM | 0.1% | -45% | $1M |
| FTV | Fortive Corp | TRIM | 0.1% | -50% | $1M |
| DEO | Diageo Plc-sponsored Adr | EXIT | 0.1% | -100% | $0 |
| FERG | Ferguson Enterprises Inc | NEW | 0.1% | +100% | $1M |
| APH | Amphenol Corp-cl A | NEW | 0.1% | +100% | $1M |
- TRIMIEX3.5%Idex CorpΔ -32%·$50M
- TRIMCSGP1.5%Costar Group IncΔ -28%·$21M
- TRIMGPN1.6%Global Payments IncΔ -34%·$23M
- TRIMODFL1.8%Old Dominion Freight LineΔ -37%·$26M
- ADDMELI1.0%Mercadolibre IncΔ +116%·$14M
- EXITROP1.0%Roper Technologies IncΔ -100%·$0
- TRIMORCL0.6%Oracle CorpΔ -21%·$8M
- NEWIR0.7%Ingersoll-rand IncΔ +100%·$11M
- NEWASML0.5%Asml Hldg NVΔ +100%·$7M
- NEWTSM0.5%Taiwan Semiconductor-sp AdrΔ +100%·$7M
- TRIMCDW0.3%Cdw Corp/deΔ -36%·$4M
- NEWNVDA0.4%Nvidia CorpΔ +100%·$6M
- EXITIT0.4%Gartner IncΔ -100%·$0
- NEWPOOL0.2%Pool CorpΔ +100%·$3M
- NEWRGEN0.2%Repligen CorpΔ +100%·$3M
- TRIMCMCSA0.1%Comcast Corp-class AΔ -45%·$1M
- TRIMFTV0.1%Fortive CorpΔ -50%·$1M
- EXITDEO0.1%Diageo Plc-sponsored AdrΔ -100%·$0
- NEWFERG0.1%Ferguson Enterprises IncΔ +100%·$1M
- NEWAPH0.1%Amphenol Corp-cl AΔ +100%·$1M
Frequently asked questions
- What stocks does Wallace Weitz own?
- As of 2026Q1, Wallace Weitz's 13F discloses 49 positions worth $1.43B. The top five holdings: BRK/B (9.3%), GOOG (6.5%), DHR (6.3%), V (5.6%), MA (5.1%). 13F filings cover long US-listed equities only — cash, bonds, shorts, and non-US positions are not disclosed.
- What did Wallace Weitz buy this quarter?
- In 2026Q1, the filing shows 8 new positions and 1 addition to existing holdings. The largest positions touched by buying: MELI, IR, ASML, TSM, NVDA.
- How big is Wallace Weitz's portfolio?
- $1.43B across 49 positions per the latest 13F (filed May 14, 2026). The top five holdings account for 33% of the disclosed book.
Explore more
Long US equity 13F-HR filings only — no shorts, no derivatives. SEC filings at EDGAR (CIK 0000883965). Not investment advice.