Wallace Weitz
Weitz Investment Management
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
| #↑ | 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 |
- 1BRK/B9.3%$134MBerkshire Hathaway Inc-cl Bthis Q hold·40q
- 2GOOG6.5%$94MAlphabet Inc-cl Cthis Q hold·40q
- 3DHR6.3%$91MDanaher Corpthis Q hold·35q
- 4V5.6%$80MVisa Inc-class A Sharesthis Q hold·39q
- 5MA5.1%$73MMastercard Inc - Athis Q hold·40q
- 6AON4.8%$69MAon Plcthis Q hold·24q
- 7MSFT4.4%$63MMicrosoft Corpthis Q hold·32q
- 8META4.2%$60MMeta Platforms Inc-class Athis Q hold·33q
- 9TMO4.2%$59MThermo Fisher Scientific Incthis Q hold·38q
- 10VMC4.1%$58MVulcan Materials COthis Q hold·34q
- 11IEX3.5%$50MIdex Corpthis Q -32%·25q
- 12AMZN3.2%$46MAmazon.com Incthis Q hold·40q
- 13HEI/A2.8%$40MHeico Corp-class Athis Q hold·25q
- 14TECH2.4%$34MBio-techne Corpthis Q hold·8q
- 15ACN2.4%$34MAccenture Plc Irelandthis Q hold·40q
- 16ADI2.4%$34MAnalog Devices Incthis Q hold·30q
- 17EFX2.4%$34MEquifax Incthis Q hold·11q
- 18TXN2.2%$31MTexas Instruments Incthis Q hold·40q
- 19SIRI2.1%$30MSirius XM Holdings Incthis Q hold·7q
- 20LBRDK2.0%$29MLiberty Broadband-cthis Q hold·40q
- 21LH1.8%$26MLabcorp Holdings Incthis Q hold·8q
- 22ODFL1.8%$26MOld Dominion Freight Linethis Q -37%·10q
- 23MLM1.6%$23MMartin Marietta Materialsthis Q hold·35q
- 24GPN1.6%$23MGlobal Payments Incthis Q -34%·10q
- 25CSGP1.5%$21MCostar Group Incthis Q -28%·25q
- 26IDXX1.4%$20MIdexx Laboratories Incthis Q hold·5q
- 27CRM1.1%$15MSalesforce Incthis Q hold·29q
- 28ACIW1.1%$15MAci Worldwide Incthis Q hold·40q
- 29MELI1.0%$14MMercadolibre Incthis Q +116%·3q
- 30PRM0.9%$12MPerimeter Solutions Incthis Q hold·6q
- 31LKQ0.8%$12MLkq Corpthis Q hold·27q
- 32IR0.7%$11MIngersoll-rand Incthis Q New·14q
- 33EEFT0.7%$11MEuronet Worldwide Incthis Q hold·2q
- 34ORCL0.6%$8MOracle Corpthis Q -21%·40q
- 35ASML0.5%$7MAsml Hldg NVthis Q New·—1q
- 36TSM0.5%$7MTaiwan Semiconductor-sp Adrthis Q New·—1q
- 37LBRDA0.5%$7MLiberty Broadband-athis Q hold·40q
- 38NVDA0.4%$6MNvidia Corpthis Q New·—1q
- 39CDW0.3%$4MCdw Corp/dethis Q -36%·3q
- 40LIN0.2%$4MLinde Plcthis Q hold·13q
- 41VLTO0.2%$4MVeralto Corpthis Q hold·10q
- 42POOL0.2%$3MPool Corpthis Q New·—1q
- 43RGEN0.2%$3MRepligen Corpthis Q New·—1q
- 44SPGI0.2%$3MS&p Global Incthis Q hold·25q
- 45CMCSA0.1%$1MComcast Corp-class Athis Q -45%·40q
- 46FTV0.1%$1MFortive Corpthis Q -50%·25q
- 47FERG0.1%$1MFerguson Enterprises Incthis Q New·—1q
- 48APH0.1%$1MAmphenol Corp-cl Athis Q New·—1q
- 49CHTR<0.1%$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
Long US equity 13F-HR filings only — no shorts, no derivatives. SEC filings at EDGAR (CIK 0000883965). Not investment advice.