Bio-Rad Laboratories, Inc. (BIO.B) stock
BIO.BNYSELaboratory Analytical InstrumentsFiscal year ends December 31Also trades as BIO
Financials through Q2 FY2026, quarter ended Jun 30, 2026Last filing: 10-Q on Aug 4, 2026Score 8/3055% above fair value
$379.50+0.00 (0.00%)
Close on Oct 29, 2026Market cap $10.18BP/E 46.2Yield –
Price history
Bio-Rad Laboratories share prices for every month, newest first. Adjusted for stock splits, not for dividends.
Close, Oct 29, 2026
$379.50
0.00% on the day
52-week range
$244.54 – $380.57
-0.3% from the high
Change over 52 weeks
+18.2%
From $321.12 on Oct 29, 2025
Average volume
35
Shares a day, last 90 sessions
| Month | Open | High | Low | Close | Change | Volume |
|---|---|---|---|---|---|---|
| Oct 2026 | $365.08 | $380.57 | $354.28 | $379.50 | +3.95% | 748 |
| Sep 2026 | $365.08 | $365.08 | $365.08 | $365.08 | 0.00% | 501 |
| Aug 2026 | $337.00 | $365.08 | $337.00 | $365.08 | +18.01% | 521 |
| Jul 2026 | $296.49 | $309.37 | $293.37 | $309.37 | +4.34% | 1,168 |
| Jun 2026 | $304.15 | $304.15 | $289.23 | $296.49 | -2.52% | 1,256 |
| May 2026 | $299.45 | $304.15 | $244.54 | $304.15 | +1.57% | 5,635 |
| Apr 2026 | $278.25 | $299.45 | $277.00 | $299.45 | +7.62% | 949 |
| Mar 2026 | $268.89 | $281.95 | $267.59 | $278.25 | +3.48% | 741 |
| Feb 2026 | $291.36 | $295.05 | $257.05 | $268.89 | -14.02% | 2,244 |
| Jan 2026 | $310.70 | $312.75 | $310.70 | $312.75 | +0.66% | 185 |
| Dec 2025 | $310.70 | $310.70 | $310.70 | $310.70 | 0.00% | 317 |
| Nov 2025 | $303.15 | $315.08 | $303.15 | $310.70 | +2.49% | 2,794 |
| Oct 2025 | $284.88 | $321.12 | $284.88 | $303.15 | +6.41% | 1,112 |
| Sep 2025 | $247.05 | $284.88 | $247.05 | $284.88 | +15.31% | 1,350 |
| Aug 2025 | $247.05 | $247.05 | $247.05 | $247.05 | 0.00% | 764 |
| Jul 2025 | $250.08 | $257.75 | $247.05 | $247.05 | -1.21% | 929 |
| Jun 2025 | $250.08 | $250.08 | $250.08 | $250.08 | 0.00% | 537 |
| May 2025 | $234.41 | $250.08 | $227.92 | $250.08 | +6.68% | 788 |
| Apr 2025 | $241.99 | $241.99 | $225.29 | $234.41 | -3.13% | 760 |
| Mar 2025 | $265.82 | $265.82 | $241.99 | $241.99 | -22.45% | 827 |
| Feb 2025 | $357.65 | $357.65 | $312.05 | $312.05 | -12.75% | 1,814 |
| Jan 2025 | $325.60 | $359.22 | $325.60 | $357.65 | +9.84% | 2,167 |
| Dec 2024 | $336.00 | $337.08 | $325.60 | $325.60 | -3.10% | 570 |
| Nov 2024 | $334.85 | $336.00 | $334.85 | $336.00 | +0.34% | 486 |
| Oct 2024 | $326.74 | $334.85 | $326.74 | $334.85 | +2.48% | 482 |
| Sep 2024 | $326.78 | $326.78 | $326.74 | $326.74 | -0.01% | 463 |
| Aug 2024 | $294.23 | $326.78 | $294.23 | $326.78 | +11.06% | 462 |
| Jul 2024 | $283.45 | $300.39 | $283.45 | $294.23 | +3.80% | 604 |
| Jun 2024 | $289.10 | $289.10 | $282.00 | $283.45 | +1.26% | 2,826 |
| May 2024 | $279.91 | $279.91 | $279.91 | $279.91 | 0.00% | 313 |
| Apr 2024 | $332.20 | $338.55 | $279.91 | $279.91 | -15.74% | 1,988 |
| Mar 2024 | $330.00 | $333.70 | $330.00 | $332.20 | +1.70% | 3,492 |
| Feb 2024 | $317.30 | $352.91 | $317.30 | $326.65 | +2.95% | 12,970 |
| Jan 2024 | $320.65 | $320.65 | $315.80 | $317.30 | -1.04% | 418 |
| Dec 2023 | $306.87 | $320.65 | $305.75 | $320.65 | +4.49% | 2,736 |
| Nov 2023 | $273.00 | $306.87 | $273.00 | $306.87 | +12.41% | 2,115 |
| Oct 2023 | $355.06 | $355.06 | $271.00 | $273.00 | -23.11% | 1,112 |
| Sep 2023 | $387.55 | $387.55 | $355.06 | $355.06 | -8.38% | 2,576 |
| Aug 2023 | $387.55 | $387.55 | $387.55 | $387.55 | 0.00% | 502 |
| Jul 2023 | $371.10 | $387.55 | $371.10 | $387.55 | +4.43% | 772 |
| Jun 2023 | $373.90 | $373.90 | $371.10 | $371.10 | -0.75% | 570 |
| May 2023 | $464.10 | $467.95 | $373.90 | $373.90 | -19.44% | 1,420 |
| Apr 2023 | $464.10 | $464.10 | $464.10 | $464.10 | 0.00% | 137 |
| Mar 2023 | $404.66 | $464.10 | $404.66 | $464.10 | +14.69% | 362 |
| Feb 2023 | $404.66 | $404.66 | $404.66 | $404.66 | 0.00% | 314 |
| Jan 2023 | $404.66 | $404.66 | $404.66 | $404.66 | 0.00% | 238 |
| Dec 2022 | $404.66 | $404.66 | $404.66 | $404.66 | 0.00% | 362 |
| Nov 2022 | $355.36 | $427.70 | $355.36 | $404.66 | +13.87% | 1,098 |
| Oct 2022 | $418.65 | $456.10 | $355.36 | $355.36 | -15.12% | 2,185 |
| Sep 2022 | $518.95 | $518.95 | $418.65 | $418.65 | -19.33% | 1,834 |
| Aug 2022 | $484.36 | $555.00 | $484.36 | $518.95 | +7.14% | 1,484 |
| Jul 2022 | $484.33 | $497.86 | $484.33 | $484.36 | +2.70% | 2,107 |
| Jun 2022 | $505.00 | $553.22 | $465.00 | $471.62 | -6.61% | 1,251 |
| May 2022 | $517.95 | $517.95 | $505.00 | $505.00 | -2.50% | 1,969 |
| Apr 2022 | $587.56 | $594.00 | $504.50 | $517.95 | -11.85% | 2,653 |
| Mar 2022 | $637.04 | $637.04 | $559.65 | $587.56 | -7.77% | 4,489 |
| Feb 2022 | $605.50 | $658.00 | $577.51 | $637.04 | +6.17% | 4,749 |
| Jan 2022 | $724.80 | $735.00 | $567.95 | $600.00 | -17.00% | 8,641 |
| Dec 2021 | $750.16 | $750.16 | $722.91 | $722.91 | -3.63% | 881 |
| Nov 2021 | $729.86 | $784.40 | $719.15 | $750.16 | +2.78% | 3,185 |
| Oct 2021 | $738.00 | $738.10 | $729.86 | $729.86 | -3.95% | 2,077 |
| Sep 2021 | $762.80 | $818.60 | $759.91 | $759.91 | -0.38% | 2,812 |
| Aug 2021 | $697.76 | $763.21 | $697.76 | $762.80 | +9.32% | 1,781 |
| Jul 2021 | $657.50 | $697.76 | $657.50 | $697.76 | +9.02% | 2,104 |
| Jun 2021 | $596.70 | $640.00 | $579.60 | $640.00 | +7.26% | 827 |
| May 2021 | $631.85 | $631.85 | $590.90 | $596.70 | -5.56% | 782 |
| Apr 2021 | $579.38 | $632.80 | $579.38 | $631.85 | +9.06% | 2,347 |
| Mar 2021 | $600.70 | $600.70 | $579.38 | $579.38 | -3.55% | 2,692 |
| Feb 2021 | $556.55 | $668.56 | $556.55 | $600.70 | +7.93% | 2,423 |
| Jan 2021 | $574.15 | $605.65 | $556.55 | $556.55 | -3.07% | 2,821 |
| Dec 2020 | $556.35 | $591.38 | $556.35 | $574.15 | +6.24% | 2,750 |
| Nov 2020 | $591.00 | $642.05 | $515.00 | $540.45 | -8.55% | 9,676 |
| Oct 2020 | $508.00 | $591.00 | $508.00 | $591.00 | +16.34% | 2,820 |
| Sep 2020 | $505.20 | $508.00 | $480.20 | $508.00 | -2.24% | 2,722 |
| Aug 2020 | $522.68 | $526.56 | $506.65 | $519.65 | -0.58% | 1,705 |
| Jul 2020 | $436.97 | $538.00 | $436.97 | $522.68 | +19.61% | 2,029 |
| Jun 2020 | $466.33 | $466.62 | $436.97 | $436.97 | -6.30% | 3,063 |
| May 2020 | $435.48 | $475.29 | $435.48 | $466.33 | +7.08% | 1,649 |
| Apr 2020 | $351.32 | $435.48 | $344.70 | $435.48 | +23.96% | 5,248 |
| Mar 2020 | $350.00 | $351.32 | $324.07 | $351.32 | +0.38% | 1,553 |
| Feb 2020 | $375.44 | $403.83 | $350.00 | $350.00 | -6.78% | 12,387 |
| Jan 2020 | $370.87 | $383.66 | $370.68 | $375.44 | +1.58% | 938 |
| Dec 2019 | $347.20 | $372.77 | $342.98 | $369.60 | +6.45% | 34,462 |
| Nov 2019 | $343.48 | $347.20 | $342.85 | $347.20 | +0.60% | 978 |
| Oct 2019 | $340.54 | $345.13 | $321.42 | $345.13 | +1.35% | 872 |
| Sep 2019 | $336.95 | $342.68 | $333.98 | $340.54 | +1.07% | 646 |
| Aug 2019 | $307.28 | $341.47 | $307.28 | $336.95 | +4.00% | 2,508 |
| Jul 2019 | $315.00 | $324.00 | $311.52 | $324.00 | +5.82% | 2,521 |
| Jun 2019 | $302.00 | $308.37 | $287.85 | $306.18 | +1.38% | 4,405 |
| May 2019 | $306.49 | $306.49 | $302.00 | $302.00 | -1.46% | 712 |
| Apr 2019 | $303.00 | $310.33 | $303.00 | $306.49 | +1.15% | 1,011 |
| Mar 2019 | $319.50 | $322.00 | $303.00 | $303.00 | +11.00% | 6,104 |
| Feb 2019 | $250.29 | $273.00 | $248.91 | $272.98 | +14.66% | 1,607 |
| Jan 2019 | $230.00 | $238.07 | $226.14 | $238.07 | +3.51% | 1,710 |
| Dec 2018 | $277.22 | $277.22 | $220.93 | $230.00 | -16.09% | 6,303 |
| Nov 2018 | $267.52 | $275.21 | $267.52 | $274.10 | +0.40% | 4,808 |
| Oct 2018 | $297.67 | $297.67 | $271.50 | $273.00 | -8.29% | 677 |
| Sep 2018 | $324.25 | $324.25 | $297.20 | $297.67 | -7.91% | 1,442 |
| Aug 2018 | $310.10 | $323.25 | $310.10 | $323.25 | +4.95% | 2,210 |
| Jul 2018 | $285.75 | $308.00 | $285.75 | $308.00 | +7.79% | 942 |
| Jun 2018 | $287.00 | $296.20 | $285.75 | $285.75 | -0.44% | 1,227 |
| May 2018 | $251.65 | $295.00 | $251.65 | $287.00 | +9.69% | 17,881 |
| Apr 2018 | $250.90 | $261.65 | $249.85 | $261.65 | +4.28% | 953 |
| Mar 2018 | $265.45 | $271.00 | $250.00 | $250.90 | +1.87% | 2,574 |
| Feb 2018 | $264.27 | $264.27 | $244.70 | $246.30 | -6.80% | 1,420 |
| Jan 2018 | $238.25 | $264.28 | $238.25 | $264.27 | +10.92% | 1,109 |
| Dec 2017 | $255.60 | $255.60 | $238.25 | $238.25 | -6.79% | 620 |
| Nov 2017 | $223.20 | $261.55 | $223.20 | $255.60 | +14.52% | 4,624 |
| Oct 2017 | $228.01 | $228.01 | $218.30 | $223.20 | -2.11% | 1,272 |
| Sep 2017 | $218.30 | $230.15 | $215.25 | $228.01 | +4.45% | 2,857 |
| Aug 2017 | $236.55 | $240.50 | $210.71 | $218.30 | -7.72% | 3,050 |
| Jul 2017 | $225.00 | $236.72 | $224.50 | $236.55 | +5.13% | 7,604 |
| Jun 2017 | $220.73 | $226.10 | $220.73 | $225.00 | +1.93% | 11,607 |
| May 2017 | $219.75 | $221.05 | $216.00 | $220.73 | +6.12% | 3,321 |
| Apr 2017 | $199.80 | $210.50 | $199.80 | $208.00 | +4.10% | 2,021 |
| Mar 2017 | $190.75 | $204.00 | $190.75 | $199.80 | +4.74% | 4,663 |
| Feb 2017 | $187.42 | $190.75 | $187.42 | $190.75 | +1.78% | 1,541 |
| Jan 2017 | $183.15 | $188.00 | $182.65 | $187.42 | +2.33% | 3,286 |
| Dec 2016 | $171.50 | $183.90 | $171.50 | $183.15 | +6.79% | 2,790 |
| Nov 2016 | $163.00 | $171.50 | $163.00 | $171.50 | +5.21% | 1,376 |
| Oct 2016 | $162.52 | $164.45 | $160.33 | $163.00 | +0.30% | 1,080 |
| Sep 2016 | $152.95 | $162.52 | $150.64 | $162.52 | +6.26% | 5,547 |
| Aug 2016 | $143.50 | $155.64 | $143.50 | $152.95 | +6.53% | 3,680 |
| Jul 2016 | $141.99 | $144.57 | $141.01 | $143.57 | +1.11% | 2,048 |
| Jun 2016 | $147.50 | $149.04 | $137.95 | $141.99 | -3.74% | 3,636 |
| May 2016 | $141.18 | $148.17 | $141.18 | $147.50 | +4.48% | 3,746 |
| Apr 2016 | $135.03 | $143.19 | $135.03 | $141.18 | +4.55% | 1,522 |
| Mar 2016 | $136.05 | $136.05 | $135.00 | $135.03 | -0.75% | 618 |
| Feb 2016 | $126.10 | $136.05 | $124.50 | $136.05 | +7.77% | 1,799 |
| Jan 2016 | $137.68 | $137.68 | $126.24 | $126.24 | -8.31% | 1,762 |
| Dec 2015 | $141.44 | $141.44 | $137.68 | $137.68 | -2.66% | 495 |
| Nov 2015 | $141.71 | $141.71 | $137.85 | $141.44 | -0.19% | 1,867 |
| Oct 2015 | $135.00 | $141.77 | $134.93 | $141.71 | +6.72% | 5,040 |
| Sep 2015 | $136.94 | $140.22 | $131.83 | $132.79 | -4.78% | 1,399 |
| Aug 2015 | $150.07 | $150.07 | $135.32 | $139.46 | -7.07% | 2,411 |
| Jul 2015 | $146.50 | $151.22 | $146.50 | $150.07 | +2.44% | 2,511 |
| Jun 2015 | $146.50 | $146.50 | $146.50 | $146.50 | 0.00% | 1,281 |
| May 2015 | $135.58 | $147.13 | $135.58 | $146.50 | +8.05% | 1,148 |
| Apr 2015 | $135.38 | $137.93 | $133.00 | $135.58 | +0.43% | 2,456 |
| Mar 2015 | $130.08 | $136.81 | $130.00 | $135.00 | +6.47% | 4,416 |
| Feb 2015 | $114.48 | $126.80 | $114.23 | $126.80 | +5.61% | 1,725 |
| Jan 2015 | $120.07 | $131.95 | $113.71 | $120.07 | -0.30% | 1,150 |
| Dec 2014 | $118.70 | $122.70 | $116.54 | $120.43 | +0.36% | 1,483 |
| Nov 2014 | $113.39 | $120.00 | $110.70 | $120.00 | +6.30% | 2,689 |
| Oct 2014 | $115.55 | $116.75 | $108.79 | $112.89 | -2.30% | 1,900 |
| Sep 2014 | $120.85 | $121.18 | $115.55 | $115.55 | -4.39% | 4,600 |
| Aug 2014 | $117.57 | $120.85 | $117.50 | $120.85 | +2.79% | 500 |
| Jul 2014 | $120.04 | $122.42 | $117.25 | $117.57 | -4.76% | 3,000 |
| Jun 2014 | $118.55 | $123.45 | $118.55 | $123.45 | +1.59% | 1,400 |
| May 2014 | $124.08 | $125.00 | $120.24 | $121.52 | -1.17% | 3,200 |
| Apr 2014 | $127.95 | $128.71 | $118.35 | $122.96 | -3.90% | 7,300 |
| Mar 2014 | $129.65 | $133.25 | $124.55 | $127.95 | -2.76% | 4,400 |
| Feb 2014 | $124.81 | $135.56 | $122.13 | $131.58 | +3.61% | 10,400 |
| Jan 2014 | $123.44 | $132.39 | $121.12 | $127.00 | +2.66% | 5,500 |
| Dec 2013 | $123.33 | $123.71 | $117.60 | $123.71 | +0.60% | 28,900 |
| Nov 2013 | $122.14 | $124.28 | $121.17 | $122.97 | +0.21% | 1,800 |
| Oct 2013 | $118.00 | $123.75 | $115.59 | $122.71 | +3.99% | 1,100 |
| Sep 2013 | $116.25 | $118.00 | $115.56 | $118.00 | +1.51% | 400 |
| Aug 2013 | $118.94 | $122.95 | $116.02 | $116.25 | -2.26% | 1,600 |
| Jul 2013 | $113.00 | $121.26 | $113.00 | $118.94 | +5.26% | 900 |
| Jun 2013 | $115.45 | $115.45 | $113.00 | $113.00 | -2.12% | 100 |
| May 2013 | $120.82 | $122.25 | $110.75 | $115.45 | -4.44% | 1,800 |
| Apr 2013 | $125.46 | $125.50 | $116.30 | $120.82 | -1.17% | 31,700 |
| Mar 2013 | $122.57 | $125.00 | $120.04 | $122.25 | -0.83% | 11,200 |
| Feb 2013 | $115.42 | $123.48 | $115.42 | $123.27 | +6.80% | 14,000 |
| Jan 2013 | $107.12 | $115.42 | $106.75 | $115.42 | +10.90% | 3,500 |
| Dec 2012 | $104.85 | $108.05 | $104.08 | $104.08 | -0.73% | 10,800 |
| Nov 2012 | $105.00 | $105.10 | $104.85 | $104.85 | +3.97% | 1,200 |
| Oct 2012 | $108.61 | $109.52 | $99.72 | $100.85 | -7.14% | 3,200 |
| Sep 2012 | $103.00 | $109.50 | $103.00 | $108.61 | +5.45% | 1,200 |
| Aug 2012 | $97.24 | $103.91 | $95.37 | $103.00 | +5.92% | 1,900 |
| Jul 2012 | $100.33 | $101.22 | $93.98 | $97.24 | -3.08% | 3,200 |
| Jun 2012 | $98.83 | $102.64 | $95.63 | $100.33 | -1.44% | 3,900 |
| May 2012 | $109.34 | $109.34 | $97.91 | $101.80 | -5.91% | 8,300 |
| Apr 2012 | $102.95 | $115.38 | $102.95 | $108.19 | +4.61% | 12,500 |
| Mar 2012 | $102.25 | $105.25 | $100.28 | $103.42 | +1.26% | 27,900 |
| Feb 2012 | $103.59 | $105.25 | $99.97 | $102.13 | +0.85% | 4,200 |
| Jan 2012 | $97.90 | $104.57 | $97.23 | $101.27 | +6.25% | 13,600 |
| Dec 2011 | $94.82 | $98.55 | $89.20 | $95.31 | +0.52% | 2,100 |
| Nov 2011 | $100.06 | $102.10 | $93.39 | $94.82 | -5.24% | 900 |
| Oct 2011 | $90.02 | $102.90 | $89.98 | $100.06 | +11.05% | 16,200 |
| Sep 2011 | $101.25 | $101.25 | $87.33 | $90.10 | -11.01% | 3,800 |
| Aug 2011 | $107.84 | $107.84 | $94.38 | $101.25 | -7.43% | 2,600 |
| Jul 2011 | $120.79 | $121.55 | $108.25 | $109.38 | -7.20% | 11,300 |
| Jun 2011 | $123.68 | $123.68 | $116.67 | $117.87 | -5.76% | 1,200 |
| May 2011 | $124.91 | $126.56 | $123.18 | $125.07 | -0.36% | 1,700 |
| Apr 2011 | $119.26 | $125.99 | $119.26 | $125.52 | +5.86% | 2,500 |
| Mar 2011 | $114.30 | $119.05 | $111.55 | $118.57 | +5.26% | 10,900 |
| Feb 2011 | $109.32 | $112.65 | $107.48 | $112.65 | +3.05% | 3,900 |
| Jan 2011 | $105.84 | $111.14 | $104.89 | $109.32 | +4.54% | 5,200 |
| Dec 2010 | $93.00 | $104.57 | $93.00 | $104.57 | +12.44% | 3,600 |
| Nov 2010 | $90.22 | $97.25 | $90.22 | $93.00 | +3.08% | 8,900 |
| Oct 2010 | $91.05 | $92.60 | $89.82 | $90.22 | -0.91% | 800 |
| Sep 2010 | $83.82 | $91.34 | $83.82 | $91.05 | +8.63% | 1,100 |
| Aug 2010 | $88.47 | $92.72 | $83.82 | $83.82 | -5.26% | 900 |
| Jul 2010 | $84.81 | $89.24 | $84.81 | $88.47 | +1.40% | 1,400 |
| Jun 2010 | $93.11 | $93.11 | $87.25 | $87.25 | -7.36% | 2,300 |
| May 2010 | $112.94 | $112.94 | $88.44 | $94.18 | -15.83% | 12,800 |
| Apr 2010 | $104.62 | $112.50 | $102.63 | $111.89 | +8.48% | 8,400 |
| Mar 2010 | $94.73 | $103.14 | $94.73 | $103.14 | +11.06% | 8,400 |
| Feb 2010 | $92.93 | $97.21 | $90.81 | $92.87 | -1.79% | 4,400 |
| Jan 2010 | $97.86 | $102.85 | $90.00 | $94.56 | -3.37% | 6,800 |
| Dec 2009 | $96.00 | $98.93 | $95.84 | $97.86 | +1.94% | 4,400 |
| Nov 2009 | $88.69 | $100.00 | $88.69 | $96.00 | +6.39% | 7,000 |
| Oct 2009 | $89.91 | $94.20 | $88.89 | $90.23 | -1.56% | 3,400 |
| Sep 2009 | $87.00 | $94.98 | $85.00 | $91.66 | +7.07% | 9,800 |
| Aug 2009 | $77.58 | $85.75 | $77.58 | $85.61 | +10.35% | 1,700 |
| Jul 2009 | $76.77 | $77.58 | $69.34 | $77.58 | +1.06% | 2,200 |
| Jun 2009 | $75.38 | $80.20 | $74.97 | $76.77 | +1.84% | 1,500 |
| May 2009 | $71.60 | $79.50 | $70.55 | $75.38 | +5.28% | 1,600 |
| Apr 2009 | $66.25 | $71.64 | $66.25 | $71.60 | +9.85% | 1,300 |
| Mar 2009 | $53.61 | $70.80 | $53.56 | $65.18 | +19.71% | 5,200 |
| Feb 2009 | $64.40 | $69.13 | $52.04 | $54.45 | -15.46% | 6,400 |
| Jan 2009 | $74.17 | $74.37 | $61.51 | $64.41 | -7.60% | 2,900 |
| Dec 2008 | $69.89 | $74.47 | $65.13 | $69.71 | -5.34% | 3,400 |
| Nov 2008 | $86.03 | $88.82 | $61.50 | $73.64 | -13.48% | 17,100 |
| Oct 2008 | $97.00 | $97.00 | $65.38 | $85.11 | -16.16% | 14,800 |
| Sep 2008 | $107.49 | $107.49 | $93.50 | $101.52 | -2.20% | 4,000 |
| Aug 2008 | $86.66 | $108.70 | $86.66 | $103.80 | +19.78% | 5,400 |
| Jul 2008 | $81.66 | $86.66 | $77.16 | $86.66 | +6.12% | 2,500 |
| Jun 2008 | $87.00 | $89.34 | $81.47 | $81.66 | -8.96% | 5,600 |
| May 2008 | $84.18 | $91.00 | $83.81 | $89.70 | +5.70% | 15,100 |
| Apr 2008 | $90.27 | $92.00 | $78.75 | $84.86 | -5.13% | 3,000 |
| Mar 2008 | $94.50 | $94.50 | $88.95 | $89.45 | -5.34% | 4,500 |
| Feb 2008 | $94.63 | $94.63 | $85.00 | $94.50 | +2.66% | 3,900 |
| Jan 2008 | $103.48 | $103.48 | $89.11 | $92.05 | -12.35% | 8,800 |
| Dec 2007 | $102.28 | $105.64 | $93.80 | $105.02 | +2.68% | 7,300 |
| Nov 2007 | $96.25 | $118.00 | $91.80 | $102.28 | +4.90% | 8,900 |
| Oct 2007 | $91.75 | $97.60 | $91.75 | $97.50 | +7.53% | 4,500 |
| Sep 2007 | $84.00 | $92.40 | $83.50 | $90.67 | +7.94% | 2,400 |
| Aug 2007 | $75.00 | $85.10 | $74.00 | $84.00 | +13.56% | 6,900 |
| Jul 2007 | $76.50 | $78.98 | $71.00 | $73.97 | -1.37% | 5,400 |
| Jun 2007 | $74.53 | $75.00 | $70.75 | $75.00 | +1.01% | 700 |
| May 2007 | $70.85 | $75.00 | $68.75 | $74.25 | +4.80% | 1,600 |
| Apr 2007 | $70.00 | $70.85 | $69.00 | $70.85 | +1.21% | 1,900 |
| Mar 2007 | $71.36 | $72.10 | $67.49 | $70.00 | -1.91% | 2,900 |
| Feb 2007 | $86.14 | $87.40 | $71.25 | $71.36 | -16.05% | 3,400 |
| Jan 2007 | $81.50 | $85.00 | $80.00 | $85.00 | +1.92% | 2,400 |
| Dec 2006 | $78.61 | $84.03 | $78.61 | $83.40 | +5.06% | 3,700 |
| Nov 2006 | $73.70 | $81.00 | $72.33 | $79.38 | +7.77% | 5,500 |
| Oct 2006 | $70.51 | $74.96 | $70.51 | $73.66 | +2.83% | 2,400 |
| Sep 2006 | $71.00 | $73.00 | $69.95 | $71.63 | -0.51% | 3,000 |
| Aug 2006 | $65.58 | $72.00 | $65.58 | $72.00 | +9.79% | 5,400 |
| Jul 2006 | $65.74 | $66.83 | $64.84 | $65.58 | -0.24% | 900 |
| Jun 2006 | $67.00 | $67.00 | $65.00 | $65.74 | -1.95% | 1,600 |
| May 2006 | $65.24 | $73.23 | $64.38 | $67.05 | +3.19% | 4,900 |
| Apr 2006 | $62.30 | $65.95 | $61.00 | $64.98 | +4.76% | 3,500 |
| Mar 2006 | $58.99 | $62.03 | $58.75 | $62.03 | +5.85% | 1,700 |
| Feb 2006 | $67.75 | $67.75 | $58.60 | $58.60 | -13.51% | 1,600 |
| Jan 2006 | $65.00 | $68.36 | $65.00 | $67.75 | +4.23% | 1,500 |
| Dec 2005 | $59.30 | $65.00 | $59.30 | $65.00 | +9.61% | 8,100 |
| Nov 2005 | $55.08 | $60.99 | $55.08 | $59.30 | +7.66% | 2,100 |
| Oct 2005 | $54.75 | $55.38 | $53.25 | $55.08 | +3.92% | 1,700 |
| Sep 2005 | $54.55 | $56.10 | $50.10 | $53.00 | -2.65% | 2,800 |
| Aug 2005 | $60.00 | $61.75 | $54.44 | $54.44 | -8.50% | 2,800 |
| Jul 2005 | $59.10 | $59.50 | $58.55 | $59.50 | +0.68% | 3,000 |
| Jun 2005 | $54.30 | $59.10 | $54.30 | $59.10 | +11.51% | 7,500 |
| May 2005 | $49.25 | $53.00 | $49.01 | $53.00 | +7.61% | 5,200 |
| Apr 2005 | $48.00 | $50.10 | $48.00 | $49.25 | +2.60% | 900 |
| Mar 2005 | $48.50 | $48.50 | $47.00 | $48.00 | -1.03% | 300 |
| Feb 2005 | $56.40 | $57.50 | $48.50 | $48.50 | -14.01% | 1,900 |
| Jan 2005 | $57.26 | $58.15 | $55.50 | $56.40 | -1.81% | 6,600 |
| Dec 2004 | $57.00 | $58.25 | $57.00 | $57.44 | +0.77% | 600 |
| Nov 2004 | $52.75 | $57.00 | $51.50 | $57.00 | +8.06% | 4,800 |
| Oct 2004 | $52.50 | $53.00 | $50.75 | $52.75 | +0.48% | 2,000 |
| Sep 2004 | $50.25 | $52.50 | $50.25 | $52.50 | +2.84% | 2,300 |
| Aug 2004 | $51.00 | $52.60 | $50.50 | $51.05 | -1.83% | 4,500 |
| Jul 2004 | $57.25 | $57.25 | $52.00 | $52.00 | -10.34% | 2,000 |
| Jun 2004 | $56.30 | $60.00 | $56.00 | $58.00 | +3.02% | 1,100 |
| May 2004 | $58.80 | $58.80 | $55.50 | $56.30 | -4.25% | 700 |
| Apr 2004 | $56.10 | $61.50 | $56.10 | $58.80 | +4.31% | 4,000 |
| Mar 2004 | $53.00 | $58.50 | $53.00 | $56.37 | +8.40% | 4,500 |
| Feb 2004 | $54.10 | $55.00 | $52.00 | $52.00 | -3.88% | 900 |
| Jan 2004 | $59.00 | $59.00 | $54.10 | $54.10 | -6.72% | 2,900 |
| Dec 2003 | $52.20 | $65.10 | $49.05 | $58.00 | +11.11% | 11,200 |
| Nov 2003 | $52.50 | $52.50 | $52.05 | $52.20 | -0.57% | 600 |
| Oct 2003 | $51.02 | $53.75 | $51.00 | $52.50 | +2.90% | 900 |
| Sep 2003 | $51.30 | $52.95 | $50.75 | $51.02 | -0.55% | 1,300 |
| Aug 2003 | $56.00 | $56.00 | $50.00 | $51.30 | -8.39% | 6,000 |
| Jul 2003 | $55.77 | $60.10 | $55.55 | $56.00 | +0.41% | 4,300 |
| Jun 2003 | $58.50 | $61.00 | $55.77 | $55.77 | -3.01% | 10,900 |
| May 2003 | $46.50 | $59.95 | $46.50 | $57.50 | +51.32% | 9,300 |
| Apr 2003 | $34.50 | $38.00 | $34.50 | $38.00 | +10.14% | 1,700 |
| Mar 2003 | $34.50 | $35.50 | $34.50 | $34.50 | 0.00% | 1,100 |
| Feb 2003 | $36.50 | $36.50 | $33.00 | $34.50 | -5.48% | 600 |
| Jan 2003 | $42.50 | $42.50 | $36.50 | $36.50 | -14.12% | 1,800 |
| Dec 2002 | $41.00 | $42.50 | $39.00 | $42.50 | -4.17% | 2,000 |
| Nov 2002 | $40.75 | $44.35 | $40.75 | $44.35 | +8.83% | 700 |
| Oct 2002 | $39.00 | $41.25 | $37.00 | $40.75 | +4.49% | 4,000 |
| Sep 2002 | $41.00 | $45.00 | $39.00 | $39.00 | -7.14% | 6,900 |
| Aug 2002 | $37.99 | $42.50 | $37.99 | $42.00 | +10.56% | 1,600 |
| Jul 2002 | $47.50 | $47.50 | $36.00 | $37.99 | -20.02% | 600 |
| Jun 2002 | $43.00 | $50.25 | $39.22 | $47.50 | +10.47% | 5,200 |
| May 2002 | $47.05 | $49.50 | $41.00 | $43.00 | -8.61% | 1,900 |
| Apr 2002 | $37.50 | $47.05 | $37.50 | $47.05 | +25.47% | 4,100 |
| Mar 2002 | $33.50 | $37.50 | $33.50 | $37.50 | +11.94% | 4,500 |
| Feb 2002 | $28.50 | $33.50 | $28.50 | $33.50 | +17.54% | 6,400 |
| Jan 2002 | $32.00 | $32.00 | $27.50 | $28.50 | -10.94% | 11,800 |
| Dec 2001 | $31.00 | $32.50 | $30.50 | $32.00 | +4.92% | 8,800 |
| Nov 2001 | $31.10 | $31.50 | $30.50 | $30.50 | -1.93% | 1,200 |
| Oct 2001 | $22.50 | $31.50 | $22.50 | $31.10 | +38.22% | 22,200 |
| Sep 2001 | $27.00 | $27.00 | $22.50 | $22.50 | -16.67% | 3,000 |
| Aug 2001 | $24.25 | $27.00 | $24.25 | $27.00 | +11.34% | 4,800 |
| Jul 2001 | $24.75 | $24.75 | $24.25 | $24.25 | -2.02% | 1,400 |
| Jun 2001 | $23.75 | $24.75 | $23.75 | $24.75 | +4.21% | 400 |
| May 2001 | $20.50 | $23.75 | $20.50 | $23.75 | +20.25% | 5,600 |
| Apr 2001 | $19.75 | $19.75 | $19.75 | $19.75 | 0.00% | 0 |
| Mar 2001 | $20.25 | $20.25 | $19.00 | $19.75 | -2.47% | 2,000 |
| Feb 2001 | $19.50 | $20.25 | $19.50 | $20.25 | +3.85% | 800 |
| Jan 2001 | $15.75 | $20.00 | $15.00 | $19.50 | +23.81% | 16,600 |
| Dec 2000 | $16.75 | $16.75 | $15.21 | $15.75 | -5.97% | 4,200 |
| Nov 2000 | $15.00 | $16.75 | $14.90 | $16.75 | +11.67% | 5,600 |
| Oct 2000 | $11.94 | $15.00 | $11.94 | $15.00 | +25.63% | 43,200 |
| Sep 2000 | $12.13 | $12.13 | $11.94 | $11.94 | -1.53% | 200 |
| Aug 2000 | $12.00 | $12.13 | $11.63 | $12.13 | +1.04% | 9,000 |
| Jul 2000 | $10.75 | $12.06 | $10.75 | $12.00 | +11.63% | 3,000 |
| Jun 2000 | $12.63 | $12.63 | $10.75 | $10.75 | -14.85% | 800 |
| May 2000 | $13.25 | $13.50 | $12.63 | $12.63 | -0.49% | 1,200 |
| Apr 2000 | $14.13 | $14.13 | $12.50 | $12.69 | -10.18% | 3,600 |
| Mar 2000 | $16.63 | $16.63 | $14.13 | $14.13 | -8.13% | 74,400 |
| Feb 2000 | $11.31 | $15.38 | $11.31 | $15.38 | +35.91% | 6,000 |
| Jan 2000 | $11.56 | $11.56 | $11.31 | $11.31 | -2.16% | 800 |
| Dec 1999 | $11.94 | $12.31 | $11.56 | $11.56 | -3.14% | 800 |
| Nov 1999 | $11.63 | $12.13 | $11.63 | $11.94 | +2.69% | 1,200 |
| Oct 1999 | $13.13 | $13.56 | $11.63 | $11.63 | -11.43% | 1,400 |
| Sep 1999 | $13.13 | $13.13 | $13.13 | $13.13 | – | 200 |
Seasonality
BIO.B return in each calendar month over the last 10 years, including dividends. The current month runs to the latest close.
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Average | 0.8% | -0.7% | 0.4% | 1.9% | 0.2% | -0.5% | 6.1% | 4.6% | -1.7% | -2.2% | 4.3% | -1.4% |
| Months up | 6 of 10 | 5 of 10 | 7 of 10 | 6 of 10 | 5 of 10 | 4 of 10 | 9 of 10 | 6 of 10 | 3 of 10 | 5 of 10 | 8 of 9 | 3 of 9 |
| 2026 | 0.7% | -14.0% | 3.5% | 7.6% | 1.6% | -2.5% | 4.3% | 18.0% | 0.0% | 3.9% | ||
| 2025 | 9.8% | -12.7% | -22.5% | -3.1% | 6.7% | 0.0% | -1.2% | 0.0% | 15.3% | 6.4% | 2.5% | 0.0% |
| 2024 | -1.0% | 2.9% | 1.7% | -15.7% | 0.0% | 1.3% | 3.8% | 11.1% | -0.0% | 2.5% | 0.3% | -3.1% |
| 2023 | 0.0% | 0.0% | 14.7% | 0.0% | -19.4% | -0.7% | 4.4% | 0.0% | -8.4% | -23.1% | 12.4% | 4.5% |
| 2022 | -17.0% | 6.2% | -7.8% | -11.8% | -2.5% | -6.6% | 2.7% | 7.1% | -19.3% | -15.1% | 13.9% | 0.0% |
| 2021 | -3.1% | 7.9% | -3.5% | 9.1% | -5.6% | 7.3% | 9.0% | 9.3% | -0.4% | -4.0% | 2.8% | -3.6% |
| 2020 | 1.6% | -6.8% | 0.4% | 24.0% | 7.1% | -6.3% | 19.6% | -0.6% | -2.2% | 16.3% | -8.6% | 6.2% |
| 2019 | 3.5% | 14.7% | 11.0% | 1.2% | -1.5% | 1.4% | 5.8% | 4.0% | 1.1% | 1.3% | 0.6% | 6.5% |
| 2018 | 10.9% | -6.8% | 1.9% | 4.3% | 9.7% | -0.4% | 7.8% | 5.0% | -7.9% | -8.3% | 0.4% | -16.1% |
| 2017 | 2.3% | 1.8% | 4.7% | 4.1% | 6.1% | 1.9% | 5.1% | -7.7% | 4.4% | -2.1% | 14.5% | -6.8% |