John Rogers - Ariel Investments
Holding/activity history for Bio-Rad Laboratories, Inc. (BIO)
← All BIO superinvestors
| Period | Shares | % of Portfolio | Activity | % Change to Portfolio | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| 2026 Q1 | 785,961 | 2.45 | Add 2.78% | 0.07 | $251.00–313.41 · VW $281.51i | $219,086,629 | SEC |
| 2025 Q4 | 764,672 | 2.50 | Reduce 5.54% | 0.13 | $287.46–334.53 · VW $305.23i | $231,687,970 | SEC |
| 2025 Q3 | 809,480 | 2.43 | Reduce 1.12% | 0.03 | $261.65–343.12 · VW $308.11i | $226,970,097 | SEC |
| 2025 Q2 | 818,624 | 2.25 | Add 12.97% | 0.26 | $211.43–267.49 · VW $240.29i | $197,550,343 | SEC |
| 2025 Q1 | 724,660 | 2.08 | Add 29.28% | 0.47 | $215.38–358.40 · VW $272.62i | $176,498,189 | SEC |
| 2024 Q4 | 560,524 | 1.99 | Add 48.01% | 0.65 | $306.42–387.99 · VW $351.76i | $184,137,739 | SEC |
| 2024 Q3 | 378,695 | 1.31 | Add 263.48% | 0.95 | $309.12–359.22 · VW $342.18i | $126,703,773 | SEC |
| 2024 Q2 | 104,187 | 0.31 | Add 60.06% | 0.12 | $262.12–344.00 · VW $314.83i | $28,454,512 | SEC |
| 2024 Q1 | 65,092 | 0.23 | Add 1353.92% | 0.21 | $268.92–364.24 · VW $300.97i | $22,513,370 | SEC |
| 2023 Q4 | 4,477 | 0.01 | Reduce 1.15% | <0.01 | $267.86–338.19 · VW $308.98i | $1,445,579 | SEC |
| 2023 Q3 | 4,529 | 0.02 | Add 3.10% | <0.01 | $261.59–419.00 · VW $318.62i | $1,623,420 | SEC |
| 2023 Q2 | 4,393 | 0.02 | Reduce 86.18% | 0.13 | $356.51–473.50 · VW $411.79i | $1,665,474 | SEC |
| 2023 Q1 | 31,797 | 0.15 | Reduce 0.31% | <0.01 | $425.74–509.62 · VW $462.05i | $15,231,398 | SEC |
| 2022 Q4 | 31,896 | 0.14 | Reduce 52.15% | 0.16 | $346.17–485.21 · VW $432.95i | $13,411,948 | SEC |
| 2022 Q3 | 66,665 | 0.31 | Add 4.32% | 0.01 | $344.63–572.70 · VW $423.01i | $27,808,000 | SEC |
| 2022 Q2 | 63,903 | 0.32 | Add 3.51% | 0.01 | $462.61–569.89 · VW $531.92i | $31,632,000 | SEC |
| 2022 Q1 | 61,736 | 0.31 | Add 10.74% | 0.03 | $493.37–670.62 · VW $558.68i | $34,771,000 | SEC |
| 2021 Q4 | 55,750 | 0.36 | Add 7.34% | 0.02 | $558.51–797.27 · VW $651.84i | $42,123,000 | SEC |
| 2021 Q3 | 51,940 | 0.35 | Reduce 0.37% | <0.01 | $703.67–832.70 · VW $777.02i | $38,745,000 | SEC |
| 2021 Q2 | 52,134 | 0.32 | Add 1.62% | <0.01 | $575.00–756.52 · VW $690.34i | $33,589,000 | SEC |
| 2021 Q1 | 51,301 | 0.29 | Add 4.04% | 0.01 | $547.22–689.00 · VW $622.12i | $29,302,000 | SEC |
| 2020 Q4 | 49,311 | 0.32 | Reduce 23.42% | 0.11 | $507.22–648.39 · VW $576.46i | $28,745,000 | SEC |
| 2020 Q3 | 64,393 | 0.48 | Reduce 11.41% | 0.06 | $472.84–598.06 · VW $552.44i | $33,192,000 | SEC |
| 2020 Q2 | 72,686 | 0.50 | Reduce 54.23% | 0.53 | $425.00–540.06 · VW $496.65i | $32,817,000 | SEC |
| 2020 Q1 | 158,814 | 0.98 | Reduce 29.88% | 0.31 | $309.38–450.89 · VW $400.12i | $55,674,000 | SEC |
| 2019 Q4 | 226,498 | 1.05 | Add 1.04% | 0.01 | $327.97–391.22 · VW $360.04i | $83,811,000 | SEC |
| 2019 Q3 | 224,172 | 1.00 | Reduce 3.09% | 0.03 | $307.40–349.99 · VW $329.67i | $74,591,000 | SEC |
| 2019 Q2 | 231,318 | 0.92 | Reduce 3.76% | 0.03 | $281.66–324.55 · VW $307.04i | $72,308,000 | SEC |
| 2019 Q1 | 240,349 | 0.92 | Add 7.14% | 0.06 | $245.59–323.95 · VW $290.16i | $73,470,000 | SEC |
| 2018 Q4 | 224,338 | 0.73 | Reduce 3.58% | 0.03 | $220.05–285.46 · VW $251.79i | $52,096,000 | SEC |
| 2018 Q3 | 232,661 | 0.81 | Add 0.30% | <0.01 | $262.57–345.15 · VW $293.52i | $72,821,000 | SEC |
| 2018 Q2 | 231,976 | 0.77 | Reduce 7.63% | 0.06 | $245.73–314.23 · VW $288.87i | $66,934,000 | SEC |
| 2018 Q1 | 251,129 | 0.73 | Reduce 6.13% | 0.05 | $231.00–279.59 · VW $254.77i | $62,802,000 | SEC |
| 2017 Q4 | 267,520 | 0.74 | Reduce 48.97% | 0.68 | $214.44–273.87 · VW $248.95i | $63,849,000 | SEC |
| 2017 Q3 | 524,244 | 1.39 | Reduce 8.71% | 0.14 | $208.95–242.79 · VW $223.84i | $116,498,000 | SEC |
| 2017 Q2 | 574,237 | 1.58 | Reduce 14.85% | 0.24 | $215.56–239.91 · VW $230.37i | $129,956,000 | SEC |
| 2017 Q1 | 674,360 | 1.64 | Reduce 23.96% | 0.48 | $186.98–219.34 · VW $208.19i | $134,427,000 | SEC |
| 2016 Q4 | 886,827 | 1.99 | Reduce 7.43% | 0.15 | $154.89–194.20 · VW $179.72i | $161,651,000 | SEC |
| 2016 Q3 | 958,046 | 1.99 | Reduce 2.33% | 0.04 | $143.39–166.48 · VW $155.98i | $156,938,000 | SEC |
| 2016 Q2 | 980,851 | 1.84 | Reduce 2.35% | 0.04 | $135.94–150.00 · VW $143.68i | $140,281,000 | SEC |
| 2016 Q1 | 1,004,492 | 1.74 | Reduce 0.14% | <0.01 | $122.96–144.52 · VW $136.44i | $137,334,000 | SEC |
| 2015 Q4 | 1,005,947 | 1.75 | Add 0.58% | 0.01 | $122.03–142.48 · VW $130.71i | $139,485,000 | SEC |
| 2015 Q3 | 1,000,161 | 1.77 | Reduce 10.94% | 0.22 | $131.25–151.75 · VW $140.83i | $134,332,000 | SEC |
| 2015 Q2 | 1,122,983 | 2.04 | Reduce 1.59% | 0.03 | $133.38–152.38 · VW $145.50i | $169,132,000 | SEC |
| 2015 Q1 | 1,141,142 | 1.90 | Add 7.60% | 0.13 | $113.01–139.19 · VW $128.88i | $154,260,000 | SEC |
| 2014 Q4 | 1,060,567 | 1.63 | Reduce 0.62% | 0.01 | $102.71–122.93 · VW $113.37i | $127,862,000 | SEC |
| 2014 Q3 | 1,067,226 | 1.73 | Add 8.52% | 0.14 | $105.30–122.73 · VW $113.62i | $121,023,000 | SEC |
| 2014 Q2 | 983,452 | 1.60 | Reduce 4.03% | 0.07 | $114.76–125.13 · VW $118.29i | $117,729,000 | SEC |
| 2014 Q1 | 1,024,729 | 1.79 | Reduce 7.06% | 0.13 | $117.98–134.13 · VW $125.11i | $131,288,000 | SEC |
| 2013 Q4 | 1,102,607 | 1.88 | Add 0.55% | 0.01 | $118.61–133.00 · VW $126.24i | $136,293,000 | SEC |
| 2013 Q3 | 1,096,613 | 2.14 | Add 8.32% | 0.16 | $113.02–126.98 · VW $121.17i | $128,918,000 | SEC |
| 2013 Q2 | 1,012,406 | 2.15 | Reduce 0.95% | 0.02 | $110.02–124.04 · VW $118.68i | $113,592,000 | SEC |
| 2013 Q1 | 1,022,110 | 2.55 | Add 3.70% | 0.09 | $113.69–127.17 · VW $120.20i | $128,786,000 | SEC |
| 2012 Q4 | 985,662 | 2.47 | Add 0.44% | 0.01 | $99.65–116.48 · VW $109.97i | $103,544,000 | SEC |
| 2012 Q3 | 981,365 | 2.60 | Reduce 0.32% | <0.01 | $93.37–109.93 · VW $101.55i | $104,731,000 | SEC |
| 2012 Q2 | 984,562 | 2.54 | Add 0.41% | 0.01 | $91.52–109.48 · VW $99.07i | $98,466,000 | SEC |
| 2012 Q1 | 980,572 | 2.46 | Add 0.04% | <0.01 | $99.63–118.00 · VW $108.54i | $101,676,000 | SEC |
| 2011 Q4 | 980,196 | 2.54 | Reduce 1.05% | 0.03 | $88.86–105.75 · VW $98.72i | $94,138,000 | SEC |
| 2011 Q3 | 990,620 | 2.82 | Reduce 19.71% | 0.64 | $84.02–109.71 · VW $97.76i | $89,919,000 | SEC |
| 2011 Q2 | 1,233,860 | 3.23 | Reduce 15.32% | 0.69 | $106.77–126.98 · VW $114.25i | $147,274,000 | SEC |
| 2011 Q1 | 1,457,091 | 4.51 | Reduce 2.26% | 0.08 | $107.00–126.26 · VW $119.46i | $175,054,913,000 | SEC |
| 2010 Q4 | 1,490,753 | 3.57 | Reduce 1.08% | 0.04 | $89.81–112.10 · VW $103.60i | $154,814,699,000 | SEC |
| 2010 Q3 | 1,507,031 | 3.41 | Add 1.29% | 0.04 | $80.00–93.36 · VW $87.99i | $136,401,376,000 | SEC |
| 2010 Q2 | 1,487,803 | 3.41 | Add 6.39% | 0.20 | $83.71–125.01 · VW $99.17i | $128,680,081,000 | SEC |
| 2010 Q1 | 1,398,473 | 3.23 | Reduce 3.69% | 0.12 | $89.96–112.68 · VW $104.78i | $144,769,925,000 | SEC |
| 2009 Q4 | 1,452,070 | 3.33 | Buy | 3.33 | $88.25–102.99 · VW $94.81i | $140,066,672,000 | SEC |
| 2009 Q3 | 0 | 0.00 | Sell 100.00% | 3.38 | $76.00–96.20 · VW $87.20i | SEC | |
| 2009 Q2 | 1,405,109 | 3.38 | Reduce 8.61% | 0.32 | $68.81–80.61 · VW $75.62i | $106,057,627,000 | SEC |
| 2009 Q1 | 1,537,509 | 3.71 | Reduce 6.59% | 0.23 | $51.33–72.64 · VW $64.55i | $101,321,843,000 | SEC |
| 2008 Q4 | 1,645,964 | 3.48 | Reduce 23.51% | 0.85 | $60.51–89.50 · VW $71.18i | $123,957,549,000 | SEC |
| 2008 Q3 | 2,151,974 | 3.63 | Add 3094.69% | 3.52 | $64.40–109.50 · VW $86.43i | $213,303,663,000 | SEC |
| 2008 Q2 | 67,361 | 2.76 | Buy | 2.76 | $75.65–91.30 · VW $85.35i | $205,092,469,000 | SEC |
| 2006 Q3 | 0 | 0.00 | Sell 100.00% | 0.94 | $63.48–75.32 · VW $70.74i | SEC | |
| 2006 Q2 | 1,938,355 | 0.94 | Buy | 0.94 | $62.66–75.00 · VW $67.85i | $125,876,000,000 | SEC |
Price snapshot:
Current price$297.58
Avg. buy price$551.60
+/- since buy-46.05%
52-week low$236.73
52-week high$343.12