Wallace Weitz - Weitz Investment Management
Period:    Q1 2026
Portfolio date:    31 Mar 2026
No. of stocks:    49
Portfolio value:    $1,432,543,452
Holdings Activity Buys Sells    History
Holding/activity history for  Standard BioTools Inc. (LAB)
← All LAB superinvestors
Period Shares % of Portfolio Activity % Change to Portfolio Price Value Filing
2024   Q2 0 0.00 Sell 100.00% 2.84 $1.60–3.04 · VW $2.30i SEC
2024   Q1 256,350 2.84 Reduce 1.91% 0.06 $1.74–2.91 · VW $2.37i $56,002,221 SEC
2023   Q4 261,350 3.15 Reduce 7.76% 0.24 $1.57–2.97 · VW $2.24i $59,402,242 SEC
2023   Q3 283,350 3.15 Add 5.63% 0.17 $1.88–3.16 · VW $2.74i $56,967,518 SEC
2023   Q2 268,250 3.47 Reduce 0.24% <0.01 $1.46–2.65 · VW $2.06i $64,736,773 SEC
2023   Q1 268,900 3.58 Add 1.99% 0.07 $1.16–2.38 · VW $1.91i $61,691,038 SEC
2022   Q4 263,650 3.55 Reduce 0.90% 0.03 $0.92–1.57 · VW $1.26i $62,084,302 SEC
2022   Q3 266,050 3.25 Reduce 2.71% 0.09 $1.08–2.07 · VW $1.50i $54,490,000 SEC
2022   Q2 273,469 3.39 $234.36 $64,090,000 SEC
2022   Q1 273,469 3.23 Reduce 5.49% 0.20 $2.67–4.19 · VW $3.49i $72,103,000 SEC
2021   Q4 289,369 3.68 Reduce 19.84% 0.85 $3.59–6.65 · VW $4.68i $90,923,000 SEC
2021   Q3 361,000 4.30 Reduce 2.49% 0.11 $5.40–7.51 · VW $6.82i $101,600,000 SEC
2021   Q2 370,200 4.35 Reduce 6.33% 0.28 $4.03–6.61 · VW $5.33i $102,120,000 SEC
2021   Q1 395,200 4.50 Reduce 13.41% 0.54 $3.71–7.50 · VW $5.54i $100,788,000 SEC
2020   Q4 456,400 4.00 Reduce 2.14% 0.09 $5.10–9.24 · VW $6.54i $92,900,000 SEC
2020   Q3 466,400 4.15 Add 3.44% 0.14 $3.91–12.45 · VW $8.10i $87,809,000 SEC
2020   Q2 450,900 3.75 Reduce 14.42% 0.51 $1.67–5.74 · VW $3.86i $74,899,000 SEC
2020   Q1 526,850 3.56 Reduce 2.87% 0.11 $1.17–4.46 · VW $3.24i $66,589,000 SEC
2019   Q4 542,425 3.69 Reduce 3.71% 0.15 $2.12–5.23 · VW $3.50i $91,762,000 SEC
2019   Q3 563,325 3.96 Reduce 8.03% 0.35 $4.59–12.45 · VW $7.82i $94,639,000 SEC
2019   Q2 612,525 4.33 Reduce 9.16% 0.40 $11.25–14.30 · VW $12.88i $105,906,000 SEC
2019   Q1 674,275 4.42 Reduce 2.18% 0.09 $8.10–14.90 · VW $10.71i $103,151,000 SEC
2018   Q4 689,325 4.13 Add 12.27% 0.45 $6.80–9.08 · VW $7.99i $87,103,000 SEC
2018   Q3 613,997 4.52 Reduce 0.20% <0.01 $5.50–8.62 · VW $7.24i $106,639,000 SEC
2018   Q2 615,247 4.88 Reduce 17.71% 0.97 $4.65–6.39 · VW $5.69i $110,455,000 SEC
2018   Q1 747,684 5.48 Reduce 1.45% 0.08 $5.46–8.38 · VW $6.48i $120,938,000 SEC
2017   Q4 758,675 5.45 Reduce 0.35% 0.02 $4.43–6.78 · VW $5.65i $121,016,000 SEC
2017   Q3 761,375 5.16 Reduce 0.36% 0.02 $2.52–5.60 · VW $4.10i $114,945,000 SEC
2017   Q2 764,090 5.57 Add 3.25% 0.18 $3.54–6.20 · VW $4.75i $117,777,000 SEC
2017   Q1 740,019 4.75 Reduce 4.97% 0.21 $4.75–8.69 · VW $6.38i $106,171,000 SEC
2016   Q4 778,751 4.32 Add 1.64% 0.07 $4.31–8.31 · VW $6.09i $99,976,000 SEC
2016   Q3 766,205 4.29 Reduce 4.87% 0.21 $7.76–10.94 · VW $9.32i $105,338,000 SEC
2016   Q2 805,459 4.21 Add 3.54% 0.14 $7.97–11.05 · VW $9.40i $104,927,000 SEC
2016   Q1 777,949 3.46 Add 11.13% 0.35 $4.84–10.98 · VW $7.20i $91,121,000 SEC
2015   Q4 700,037 3.20 Reduce 4.85% 0.13 $7.20–12.09 · VW $10.37i $86,553,000 SEC
2015   Q3 735,729 2.72 Add 2.06% 0.06 $7.87–24.43 · VW $14.26i $79,805,000 SEC
2015   Q2 720,849 2.73 Reduce 3.40% 0.10 $22.00–45.64 · VW $29.09i $87,381,000 SEC
2015   Q1 746,258 2.84 Reduce 25.12% 0.85 $32.43–46.38 · VW $40.23i $94,096,000 SEC
2014   Q4 996,606 3.40 Add 0.78% 0.03 $21.71–34.17 · VW $29.32i $107,534,000 SEC
2014   Q3 988,891 3.38 Reduce 1.09% 0.04 $24.41–32.48 · VW $28.15i $100,620,000 SEC
2014   Q2 999,816 3.48 Add 0.21% <0.01 $24.90–46.02 · VW $32.96i $102,381,000 SEC
2014   Q1 997,770 3.56 Add 10.49% 0.34 $34.77–49.46 · VW $43.86i $97,991,000 SEC
2013   Q4 903,010 3.21 Add 32.70% 0.79 $21.41–39.59 · VW $32.27i $82,508,000 SEC
2013   Q3 680,480 2.90 Add 11.09% 0.29 $16.16–23.39 · VW $19.94i $67,463,000 SEC
2013   Q2 612,550 2.86 Reduce 0.05% <0.01 $15.72–19.96 · VW $17.36i $61,316,000 SEC
2013   Q1 612,850 2.71 Add 4.79% 0.12 $14.00–19.49 · VW $17.02i $55,279,000 SEC
2012   Q4 584,850 2.79 Add 1.74% 0.05 $13.43–17.23 · VW $14.72i $50,660,000 SEC
2012   Q3 574,850 1.37 Add 1.23% 0.02 $12.55–17.23 · VW $15.26i $53,156,000 SEC
2012   Q2 567,850 1.32 Add 1.29% 0.02 $12.53–16.29 · VW $14.48i $52,589,000 SEC
2012   Q1 560,632 2.70 Reduce 2.26% 0.06 $12.28–16.86 · VW $14.79i $51,320,000 SEC
2011   Q4 573,585 2.80 Add 0.49% 0.01 $12.05–15.00 · VW $13.51i $49,311,000 SEC
2011   Q3 570,803 2.64 Add 11.34% 0.27 $11.64–20.20 · VW $14.99i $45,122,000 SEC
2011   Q2 512,673 2.62 Add 5.79% 0.14 $13.50–18.24 · VW $15.75i $49,622,000 SEC
2011   Q1 484,635 2.49 Add 0.44% 0.01 $13.65–16.97 · VW $14.98i
IPO/listing quarter
$44,649,000 SEC
2010   Q4 482,500 2.53 $87.92 $42,421,000 SEC
2010   Q3 482,500 2.35 Add 33.14% 0.59 $78.43 $37,842,000 SEC
2010   Q2 362,400 1.92 Add 23.94% 0.37 $75.35 $27,307,000 SEC
2010   Q1 292,400 0.70 Add 7.07% 0.05 $75.71 $22,138,000 SEC
2009   Q4 273,100 0.83 Add 6.97% 0.05 $74.84 $20,439,000 SEC
2009   Q3 255,300 1.32 Add 39.05% 0.37 $65.70 $16,773,000 SEC
2009   Q2 183,600 0.45 Add 1.38% <0.01 $67.79 $12,446,000 SEC
2009   Q1 181,100 0.94 Add 8.12% 0.07 $58.49 $10,593,000 SEC
2008   Q4 167,500 0.84 Add 1016.67% 0.76 $64.41 $10,789,000 SEC
2008   Q3 15,000 0.06 $69.53 $1,043,000 SEC
2008   Q2 15,000 0.05 Add 42.86% 0.01 $69.60 $1,044,000 SEC
2008   Q1 10,500 0.03 $73.71 $774,000 SEC
2007   Q4 10,500 0.03 $75.52 $793,000 SEC
2007   Q3 10,500 0.02 $78.19 $821,000 SEC
2007   Q2 10,500 0.02 $78.29 $822,000 SEC
2007   Q1 10,500 0.02 $72.67 $763,000 SEC
2006   Q4 10,500 0.02 $73.43 $771,000 SEC
2006   Q3 10,500 0.02 Reduce 8.70% 0.01 $65.52 $688,000 SEC
2006   Q2 11,500 0.14 Reduce 97.40% 0.58 $62.26 $716,000 SEC
2006   Q1 441,500 0.60 $58.48 $25,819,000 SEC
2005   Q4 441,500 0.25 $53.85 $23,775,000 SEC
2005   Q3 441,500 0.44 $48.71 $21,505,000 SEC
2005   Q2 441,500 0.46 Reduce 47.18% 0.43 $49.90 $22,031,000 SEC
2005   Q1 835,900 0.91 Reduce 48.95% 0.71 $48.20 $40,290,000 SEC
2004   Q4 1,637,500 1.44 Reduce 14.44% 0.23 $49.82 $81,580,000 SEC
2004   Q3 1,913,800 1.57 Add 0.24% <0.01 $43.72 $83,671,000 SEC
2004   Q2 1,909,300 0.78 Add 0.04% <0.01 $39.70 $75,799,000 SEC
2004   Q1 1,908,500 1.49 Buy 1.49 $39.25 $74,909,000 SEC
2003   Q4 0 0.00 Sell 100.00% 1.17 SEC
2003   Q3 1,875,900 1.17 Buy 1.17 $28.70 $53,838,000 SEC
Price snapshot:
Current price$0.85
52-week low$0.70
52-week high$1.72