InvestorsWeitz Investment Management
Not investment advice · 13F data lagged ~45 days · Full disclaimer
Hedge fund
Weitz Investment Management
Holdings as of Q1 2026
Quarter
Q1-2026
Market value
$1.4B
Positions
49
Concentration
Balanced
Top holding
9%BRK-B
Top 5
33%of book
Top 10
55%of book
Top 5
6 – 10
Tail
Top 5
6 – 10
Tail
| Holding | Weightshares held per quarter · hover for change | Q/Q change | Value | |
|---|---|---|---|---|
| 1 | BERKSHIRE HATHAWAYBRK-B | 9.33% | ↘Reduced 2.79% | 278.9K shares · $479.20 $133.6M |
| 2 | ALPHABETGOOG | 6.54% | ↘Reduced 6.08% | 326.8K shares · $286.86 $93.7M |
| 3 | DANAHER CorpDHR | 6.32% | ↘Reduced 7.04% | 477.8K shares · $189.60 $90.6M |
| 4 | VISAV | 5.60% | ↘Reduced 1.94% | 265.3K shares · $302.24 $80.2M |
| 5 | MASTERCARD INCORPORATEDMA | 5.13% | ↘Reduced 5.71% | 147.0K shares · $499.66 $73.5M |
| 6 | AONAON | 4.82% | ↘Reduced 2.23% | 213.9K shares · $322.78 $69.0M |
| 7 | MICROSOFT CORPMSFT | 4.38% | ↗Added 16.08% | 169.4K shares · $370.17 $62.7M |
| 8 | META PLATFORMSMETA | 4.22% | ↘Reduced 2.76% | 105.7K shares · $572.13 $60.5M |
| 9 | THERMO FISHER SCIENTIFICTMO | 4.15% | ↘Reduced 10.34% | 121.0K shares · $491.53 $59.5M |
| 10 | VULCAN MATLSVMC | 4.07% | ↗Added 1.90% | 214.2K shares · $272.30 $58.3M |
| 11 | IDEX CORPIEX | 3.50% | ↘Reduced 32.49% | 264.3K shares · $189.55 $50.1M |
| 12 | AMAZON COMAMZN | 3.23% | 222.5K shares · $208.27 $46.3M | |
| 13 | HEICO CORP NEWHEI-A | 2.78% | ↗Added 16.10% | 189.0K shares · $211.09 $39.9M |
| 14 | BIO-TECHNE CORPTECH | 2.38% | ↘Reduced 18.65% | 653.2K shares · $52.26 $34.1M |
| 15 | ACCENTURE IRELANDACN | 2.36% | ↗Added 6.09% | 170.7K shares · $198.29 $33.8M |
| 16 | ANALOG DEVICESADI | 2.36% | ↘Reduced 19.92% | 106.3K shares · $318.14 $33.8M |
| 17 | EQUIFAXEFX | 2.36% | ↘Reduced 12.69% | 187.6K shares · $180.07 $33.8M |
| 18 | TEXAS INSTRSTXN | 2.17% | ↘Reduced 3.03% | 160.1K shares · $194.14 $31.1M |
| 19 | SIRIUS XMSIRI | 2.08% | ↘Reduced 6.58% | 1.3M shares · $23.08 $29.8M |
| 20 | LIBERTY BROADBAND CORPLBRDK | 2.02% | ↘Reduced 11.52% | 576.0K shares · $50.30 $29.0M |
| 21 | LabcorpLH | 1.84% | ↘Reduced 0.70% | 99.0K shares · $266.81 $26.4M |
| 22 | OLD DOMINION FREIGHTODFL | 1.80% | ↘Reduced 36.78% | 132.0K shares · $195.40 $25.8M |
| 23 | Martin Marietta MaterialsMLM | 1.63% | ↘Reduced 3.63% | 39.8K shares · $588.68 $23.4M |
| 24 | GLOBAL PMTSGPN | 1.57% | ↘Reduced 33.66% | 335.0K shares · $67.30 $22.5M |
| 25 | COSTARCSGP | 1.46% | ↘Reduced 28.18% | 517.0K shares · $40.34 $20.9M |
| 26 | IDEXX LABSIDXX | 1.38% | 35.3K shares · $561.89 $19.8M | |
| 27 | SALESFORCECRM | 1.06% | ↘Reduced 6.86% | 81.5K shares · $186.67 $15.2M |
| 28 | ACI WORLDWIDEACIW | 1.05% | 367.7K shares · $41.01 $15.1M | |
| 29 | MERCADOLIBREMELI | 0.97% | ↗Added 116.22% | 8.0K shares · $1729.02 $13.8M |
| 30 | PERIMETER SOLUTIONSPRM | 0.87% | 509.4K shares · $24.42 $12.4M | |
| 31 | LKQ CORPLKQ | 0.84% | ↘Reduced 7.48% | 408.0K shares · $29.37 $12.0M |
| 32 | INGERSOLL RANDIR | 0.74% | ↗Added 66.50% | 133.2K shares · $80.12 $10.7M |
| 33 | EURONET WORLDWIDEEEFT | 0.74% | 160.0K shares · $66.37 $10.6M | |
| 34 | ORACLE CORPORCL | 0.56% | ↘Reduced 21.43% | 55.0K shares · $147.11 $8.1M |
| 35 | ASML HOLDING N VASML | 0.51% | ↗Buy | 5.5K shares · $1320.83 $7.3M |
| 36 | TAIWAN SEMICONDUCTOR MFGTSM | 0.47% | ↗Buy | 20.0K shares · $337.95 $6.8M |
| 37 | LIBERTY BROADBAND CORPLBRDA | 0.46% | ↘Reduced 7.14% | 130.0K shares · $50.22 $6.5M |
| 38 | NVIDIA CorpNVDA | 0.43% | ↗Buy | 35.0K shares · $174.40 $6.1M |
| 39 | CDW CORPCDW | 0.31% | ↘Reduced 35.56% | 36.3K shares · $121.02 $4.4M |
| 40 | LINDELIN | 0.25% | 7.2K shares · $495.76 $3.6M | |
| 41 | VERALTO CORPVLTO | 0.25% | ↗Added 5.26% | 40.0K shares · $88.42 $3.5M |
| 42 | POOL CORPPOOL | 0.21% | ↗Buy | 15.0K shares · $202.33 $3.0M |
| 43 | REPLIGEN CORPRGEN | 0.21% | ↗Buy | 25.5K shares · $117.82 $3.0M |
| 44 | SP GLOBALSPGI | 0.21% | ↘Reduced 1.26% | 7.0K shares · $425.34 $3.0M |
| 45 | COMCAST CORP NEWCMCSA | 0.09% | ↘Reduced 44.71% | 47.0K shares · $28.71 $1.3M |
| 46 | FORTIVE CORPFTV | 0.09% | ↘Reduced 50.44% | 22.5K shares · $55.28 $1.2M |
| 47 | FERGUSON ENTERPRISESFERG | 0.08% | ↗Buy | 5.2K shares · $233.26 $1.2M |
| 48 | AMPHENOL CORP NEWAPH | 0.08% | ↗Buy | 9.2K shares · $126.35 $1.2M |
| 49 | CHARTER COMMUNICATIONS NCHTR | 0.01% | 650 shares · $215.88 $140,322 | |
| 49 positions | 100.00% | $1.4B |