Weitz Investment Management (Wallace Weitz) latest 13F portfolio: 49 holdings worth $1.4B as of Q1 2026.
Backtested since 2020: mirroring Weitz Investment Management's reported 13F equity holdings each quarter would have returned +107.3% versus +194.2%for the S&P 500 (+12.4% annualized). See the Performance tab for the full equity curve.
Investor: Wallace Weitz
Number of Assets: 49
Reporting Period: Q1 - 2026
Holdings at Report: $1,432,543,452
Return $ Since Report: +$208,549,495
Return % Since Report: +14.56%
Company | Position | Activity | Shares | Port. % | Rep. Price | Curr. Price | Rep. Value | Curr. Value | Return Value | Return % |
|---|---|---|---|---|---|---|---|---|---|---|
| Idexx Laboratories Inc. (IDXX) | Equity | 0% | 35,300 | 1.38% | $561.89 | $586.67 | $19,834,717 | $20,709,451 | +$874,734 | +4.41% |
| Amphenol Corp. (APH) | Equity | +100% | 9,200 | 0.08% | $126.35 | $169.18 | $1,162,420 | $1,556,456 | +$394,036 | +33.90% |
| Perimeter Solutions Inc. (PRM) | Equity | 0% | 509,400 | 0.87% | $24.42 | $35.26 | $12,439,548 | $17,961,444 | +$5,521,896 | +44.39% |
| Liberty Broadband Corp. (LBRDA) | Equity | -7.14% | 130,000 | 0.46% | $50.22 | $35.93 | $6,528,600 | $4,670,900 | -$1,857,700 | -28.45% |
| Mastercard Inc. (MA) | Equity | -5.71% | 147,000 | 5.13% | $499.66 | $562.95 | $73,450,020 | $82,753,650 | +$9,303,630 | +12.67% |
| Old Dominion Freight Line Inc. (ODFL) | Equity | -36.78% | 132,000 | 1.80% | $195.40 | $216.36 | $25,792,800 | $28,559,520 | +$2,766,720 | +10.73% |
| Repligen Corp. (RGEN) | Equity | +100% | 25,500 | 0.21% | $117.82 | $163.90 | $3,004,410 | $4,179,450 | +$1,175,040 | +39.11% |
| Vulcan Materials Company (VMC) | Equity | +1.90% | 214,200 | 4.07% | $272.30 | $284.69 | $58,326,660 | $60,980,598 | +$2,653,938 | +4.55% |
| Mercadolibre Inc. (MELI) | Equity | +116.22% | 8,000 | 0.97% | $1,729.02 | $1,820.69 | $13,832,160 | $14,565,520 | +$733,360 | +5.30% |
| Sirius Xm Holdings Inc. (SIRI) | Equity | -6.58% | 1,293,000 | 2.08% | $23.08 | $29.91 | $29,842,440 | $38,673,630 | +$8,831,190 | +29.59% |
| Analog Devices Inc. (ADI) | Equity | -19.92% | 106,350 | 2.36% | $318.14 | $389.93 | $33,834,189 | $41,469,056 | +$7,634,867 | +22.57% |
| Aon PLC (AON) | Equity | -2.23% | 213,860 | 4.82% | $322.78 | $358.30 | $69,029,731 | $76,626,038 | +$7,596,307 | +11.00% |
| Bio-Techne Corp. (TECH) | Equity | -18.65% | 653,200 | 2.38% | $52.26 | $72.29 | $34,136,232 | $47,219,828 | +$13,083,596 | +38.33% |
| Comcast Corp. (CMCSA) | Equity | -44.71% | 47,000 | 0.09% | $28.71 | $25.36 | $1,349,370 | $1,191,920 | -$157,450 | -11.67% |
| Costar Group Inc. (CSGP) | Equity | -28.18% | 517,025 | 1.46% | $40.34 | $30.24 | $20,856,789 | $15,634,836 | -$5,221,953 | -25.04% |
| Ingersoll Rand Inc. (IR) | Equity | +100% | 133,200 | 0.74% | $80.12 | $86.97 | $10,671,984 | $11,584,404 | +$912,420 | +8.55% |
| Liberty Broadband Corp. (LBRDK) | Equity | -11.52% | 576,000 | 2.02% | $50.30 | $35.88 | $28,972,800 | $20,666,880 | -$8,305,920 | -28.67% |
| Taiwan Semiconductor Manufacturing Company Limited (TSM) | Equity | +100% | 20,000 | 0.47% | $337.95 | $420.04 | $6,759,000 | $8,400,800 | +$1,641,800 | +24.29% |
| Veralto Corp. (VLTO) | Equity | +5.26% | 40,000 | 0.25% | $88.42 | $98.34 | $3,536,800 | $3,933,600 | +$396,800 | +11.22% |
| Aci Worldwide Inc. (ACIW) | Equity | 0% | 367,700 | 1.05% | $41.01 | $53.67 | $15,079,377 | $19,734,459 | +$4,655,082 | +30.87% |
| ASML Holding N.V. (ASML) | Equity | +100% | 5,500 | 0.51% | $1,320.83 | $1,740.99 | $7,264,565 | $9,575,445 | +$2,310,880 | +31.81% |
| Cdw Corp. (CDW) | Equity | -35.56% | 36,250 | 0.31% | $121.02 | $135.81 | $4,386,975 | $4,923,113 | +$536,138 | +12.22% |
| Danaher Corp. (DHR) | Equity | -7.04% | 477,750 | 6.32% | $189.60 | $204.76 | $90,581,400 | $97,824,090 | +$7,242,690 | +8.00% |
| Euronet Worldwide Inc. (EEFT) | Equity | 0% | 160,000 | 0.74% | $66.37 | $72.08 | $10,619,200 | $11,532,800 | +$913,600 | +8.60% |
| Fortive Corp. (FTV) | Equity | -50.44% | 22,500 | 0.09% | $55.28 | $61.71 | $1,243,800 | $1,388,475 | +$144,675 | +11.63% |
| Idex Corp. (IEX) | Equity | -32.49% | 264,300 | 3.50% | $189.55 | $234.46 | $50,098,065 | $61,967,778 | +$11,869,713 | +23.69% |
| LKQ Corp. (LKQ) | Equity | -7.48% | 408,000 | 0.84% | $29.37 | $24.86 | $11,982,960 | $10,142,880 | -$1,840,080 | -15.36% |
| Microsoft Corp. (MSFT) | Equity | +16.08% | 169,450 | 4.38% | $370.17 | $499.99 | $62,725,307 | $84,723,306 | +$21,997,999 | +35.07% |
| Martin Marietta Materials Inc. (MLM) | Equity | -3.63% | 39,775 | 1.63% | $588.68 | $548.57 | $23,414,747 | $21,819,372 | -$1,595,375 | -6.81% |
| Accenture PLC (ACN) | Equity | +6.09% | 170,700 | 2.36% | $198.29 | $175.72 | $33,848,103 | $29,995,404 | -$3,852,699 | -11.38% |
| Amazon.com Inc. (AMZN) | Equity | 0% | 222,500 | 3.23% | $208.27 | $274.48 | $46,340,075 | $61,071,800 | +$14,731,725 | +31.79% |
| Equifax Inc. (EFX) | Equity | -12.69% | 187,605 | 2.36% | $180.07 | $182.56 | $33,782,032 | $34,249,169 | +$467,137 | +1.38% |
| Nvidia Corp. (NVDA) | Equity | +100% | 35,000 | 0.43% | $174.40 | $223.96 | $6,104,000 | $7,838,600 | +$1,734,600 | +28.42% |
| Global Payments Inc. (GPN) | Equity | -33.66% | 335,000 | 1.57% | $67.30 | $86.12 | $22,545,500 | $28,850,200 | +$6,304,700 | +27.96% |
| Labcorp. Holdings Inc. (LH) | Equity | -0.70% | 99,050 | 1.84% | $266.81 | $319.17 | $26,427,531 | $31,613,789 | +$5,186,257 | +19.62% |
| Pool Corp. (POOL) | Equity | +100% | 15,000 | 0.21% | $202.33 | $206.31 | $3,034,950 | $3,094,650 | +$59,700 | +1.97% |
| Salesforce Inc. (CRM) | Equity | -6.86% | 81,500 | 1.06% | $186.67 | $192.74 | $15,213,605 | $15,708,310 | +$494,705 | +3.25% |
| Visa Inc. (V) | Equity | -1.94% | 265,330 | 5.60% | $302.24 | $362.50 | $80,193,339 | $96,182,125 | +$15,988,786 | +19.94% |
| Alphabet Inc. (GOOG) | Equity | -6.08% | 326,750 | 6.54% | $286.86 | $353.47 | $93,731,505 | $115,496,323 | +$21,764,818 | +23.22% |
| Berkshire Hathaway Inc. (BRK-B) | Equity | -2.79% | 278,850 | 9.33% | $479.20 | $521.80 | $133,624,920 | $145,503,930 | +$11,879,010 | +8.89% |
| Charter Communications Inc. (CHTR) | Equity | 0% | 650 | 0.01% | $215.88 | $152.57 | $140,322 | $99,171 | -$41,152 | -29.33% |
| Ferguson Enterprises Inc. (FERG) | Equity | +100% | 5,200 | 0.08% | $233.26 | $256.69 | $1,212,952 | $1,334,788 | +$121,836 | +10.04% |
| Heico Corp. (HEI-A) | Equity | +16.10% | 188,979 | 2.78% | $211.09 | $266.31 | $39,891,577 | $50,326,997 | +$10,435,420 | +26.16% |
| Linde PLC (LIN) | Equity | 0% | 7,200 | 0.25% | $495.76 | $489.98 | $3,569,472 | $3,527,856 | -$41,616 | -1.17% |
| Meta Platforms Inc. (META) | Equity | -2.76% | 105,710 | 4.22% | $572.13 | $592.10 | $60,479,862 | $62,590,891 | +$2,111,029 | +3.49% |
| Oracle Corp. (ORCL) | Equity | -21.43% | 55,000 | 0.56% | $147.11 | $147.02 | $8,091,050 | $8,086,100 | -$4,950 | -0.06% |
| S&P Global Inc. (SPGI) | Equity | -1.26% | 7,050 | 0.21% | $425.34 | $408.19 | $2,998,647 | $2,877,740 | -$120,908 | -4.03% |
| Texas Instruments Inc. (TXN) | Equity | -3.03% | 160,100 | 2.17% | $194.14 | $286.08 | $31,081,814 | $45,801,408 | +$14,719,594 | +47.36% |
| Thermo Fisher Scientific Inc. (TMO) | Equity | -10.34% | 121,000 | 4.15% | $491.53 | $594.00 | $59,475,130 | $71,874,000 | +$12,398,870 | +20.85% |