Bio-Rad Laboratories, Inc. (BIO) stock
BIONYSELaboratory Analytical InstrumentsFiscal year ends December 31Also trades as BIO.B
Financials through Q2 FY2026, quarter ended Jun 30, 2026Last filing: 10-Q on Aug 4, 2026Score 8/3055% above fair value
$372.18−12.22 (-3.18%)
Close on Oct 30, 2026Market cap $9.99BP/E 45.3Yield –
Price history
Bio-Rad Laboratories share prices for every trading day, newest first. Adjusted for stock splits, not for dividends.
Close, Oct 30, 2026
$372.18
-3.18% on the day
52-week range
$236.73 – $396.23
-6.1% from the high
Change over 52 weeks
+22.2%
From $304.61 on Oct 30, 2025
Average volume
272,795
Shares a day, last 90 sessions
| Date | Open | High | Low | Close | Change | Volume |
|---|---|---|---|---|---|---|
| Oct 30, 2026 | $381.09 | $384.00 | $368.45 | $372.18 | -3.18% | 183,089 |
| Oct 29, 2026 | $389.15 | $390.16 | $379.24 | $384.40 | -0.19% | 332,347 |
| Oct 28, 2026 | $384.15 | $388.86 | $379.79 | $385.12 | +1.08% | 251,325 |
| Oct 27, 2026 | $376.25 | $381.87 | $369.33 | $380.99 | +2.30% | 167,160 |
| Oct 26, 2026 | $371.80 | $376.00 | $369.76 | $372.43 | +0.67% | 179,100 |
| Oct 23, 2026 | $356.98 | $371.31 | $352.46 | $369.95 | +1.77% | 167,432 |
| Oct 22, 2026 | $359.83 | $367.93 | $359.83 | $363.50 | +0.83% | 228,223 |
| Oct 21, 2026 | $350.21 | $362.42 | $347.29 | $360.50 | +1.69% | 360,455 |
| Oct 20, 2026 | $352.08 | $356.93 | $350.49 | $354.50 | +0.48% | 212,450 |
| Oct 19, 2026 | $355.30 | $356.34 | $350.61 | $352.82 | -0.25% | 220,861 |
| Oct 16, 2026 | $369.37 | $369.37 | $350.77 | $353.70 | -3.05% | 207,706 |
| Oct 15, 2026 | $364.90 | $368.54 | $359.88 | $364.82 | +0.66% | 247,832 |
| Oct 14, 2026 | $367.86 | $371.07 | $361.27 | $362.43 | -0.36% | 297,396 |
| Oct 13, 2026 | $369.00 | $369.43 | $358.43 | $363.73 | -0.19% | 132,592 |
| Oct 12, 2026 | $369.85 | $369.85 | $359.41 | $364.42 | -0.48% | 181,201 |
| Oct 9, 2026 | $364.32 | $368.67 | $361.32 | $366.16 | +1.60% | 138,984 |
| Oct 8, 2026 | $371.99 | $372.59 | $353.97 | $360.40 | -2.04% | 312,024 |
| Oct 7, 2026 | $373.16 | $374.60 | $363.98 | $367.92 | -0.25% | 251,904 |
| Oct 6, 2026 | $383.38 | $390.00 | $367.49 | $368.83 | -2.89% | 162,538 |
| Oct 5, 2026 | $368.07 | $381.78 | $363.96 | $379.82 | +2.89% | 279,402 |
| Oct 2, 2026 | $357.28 | $369.40 | $357.28 | $369.14 | +3.82% | 223,646 |
| Oct 1, 2026 | $373.87 | $379.67 | $353.30 | $355.57 | -5.86% | 264,583 |
| Sep 30, 2026 | $377.61 | $380.88 | $374.02 | $377.71 | -0.48% | 228,588 |
| Sep 29, 2026 | $377.73 | $381.56 | $374.79 | $379.55 | +0.49% | 261,682 |
| Sep 28, 2026 | $376.98 | $383.95 | $373.18 | $377.69 | -0.87% | 272,636 |
| Sep 25, 2026 | $384.14 | $387.00 | $376.43 | $381.00 | -1.69% | 253,587 |
| Sep 24, 2026 | $377.73 | $389.38 | $376.18 | $387.54 | +2.29% | 374,180 |
| Sep 23, 2026 | $379.27 | $382.85 | $374.77 | $378.88 | -0.18% | 177,213 |
| Sep 22, 2026 | $377.53 | $383.25 | $374.01 | $379.57 | +0.59% | 374,684 |
| Sep 21, 2026 | $381.58 | $381.58 | $373.47 | $377.33 | +0.24% | 311,465 |
| Sep 18, 2026 | $383.05 | $383.05 | $374.81 | $376.41 | -1.57% | 324,347 |
| Sep 17, 2026 | $384.23 | $385.71 | $377.69 | $382.41 | +0.89% | 204,960 |
| Sep 16, 2026 | $378.25 | $385.33 | $375.00 | $379.03 | +0.27% | 262,414 |
| Sep 15, 2026 | $366.33 | $380.91 | $366.28 | $378.00 | +2.56% | 519,131 |
| Sep 14, 2026 | $365.66 | $370.52 | $365.66 | $368.55 | -0.21% | 292,990 |
| Sep 11, 2026 | $370.45 | $373.71 | $368.69 | $369.32 | +0.15% | 344,834 |
| Sep 10, 2026 | $379.92 | $382.01 | $368.56 | $368.75 | -2.18% | 334,375 |
| Sep 9, 2026 | $380.00 | $380.06 | $373.34 | $376.97 | -0.83% | 177,000 |
| Sep 8, 2026 | $390.73 | $390.73 | $379.49 | $380.12 | -1.55% | 138,843 |
| Sep 4, 2026 | $380.84 | $386.78 | $376.20 | $386.11 | -0.46% | 112,950 |
| Sep 3, 2026 | $390.00 | $394.29 | $381.06 | $387.90 | -0.16% | 148,027 |
| Sep 2, 2026 | $380.62 | $389.83 | $380.23 | $388.51 | +1.98% | 285,333 |
| Sep 1, 2026 | $387.88 | $387.88 | $380.27 | $380.96 | -1.34% | 256,110 |
| Aug 31, 2026 | $393.85 | $394.02 | $382.13 | $386.12 | -0.41% | 301,423 |
| Aug 28, 2026 | $390.82 | $392.29 | $382.10 | $387.70 | -0.57% | 206,972 |
| Aug 27, 2026 | $389.03 | $396.23 | $386.69 | $389.94 | +0.33% | 245,882 |
| Aug 26, 2026 | $393.10 | $393.10 | $385.50 | $388.64 | -0.44% | 221,657 |
| Aug 25, 2026 | $384.00 | $390.83 | $377.80 | $390.34 | +2.25% | 295,718 |
| Aug 24, 2026 | $384.09 | $384.09 | $373.40 | $381.76 | +0.46% | 300,154 |
| Aug 21, 2026 | $385.80 | $385.92 | $373.47 | $380.03 | +0.95% | 341,175 |
| Aug 20, 2026 | $360.29 | $380.71 | $360.25 | $376.46 | +3.35% | 337,558 |
| Aug 19, 2026 | $356.89 | $367.95 | $352.70 | $364.26 | +3.28% | 257,994 |
| Aug 18, 2026 | $356.17 | $356.49 | $351.80 | $352.69 | -0.72% | 210,659 |
| Aug 17, 2026 | $359.29 | $359.29 | $353.86 | $355.23 | -0.29% | 213,508 |
| Aug 14, 2026 | $361.06 | $362.49 | $355.07 | $356.26 | -1.36% | 173,819 |
| Aug 13, 2026 | $364.00 | $365.00 | $352.12 | $361.19 | -0.25% | 207,470 |
| Aug 12, 2026 | $353.06 | $362.42 | $351.00 | $362.08 | +1.64% | 233,885 |
| Aug 11, 2026 | $349.37 | $358.69 | $349.37 | $356.25 | +0.48% | 251,919 |
| Aug 10, 2026 | $350.49 | $355.85 | $347.86 | $354.54 | +0.59% | 221,108 |
| Aug 7, 2026 | $339.18 | $353.33 | $339.18 | $352.47 | +2.93% | 266,854 |
| Aug 6, 2026 | $345.05 | $345.05 | $336.09 | $342.43 | -1.56% | 305,014 |
| Aug 5, 2026 | $340.00 | $352.63 | $329.60 | $347.86 | +4.50% | 522,124 |
| Aug 4, 2026 | $336.52 | $338.42 | $325.31 | $332.88 | -0.55% | 274,326 |
| Aug 3, 2026 | $324.98 | $335.53 | $319.49 | $334.71 | +2.84% | 295,491 |
| Jul 31, 2026 | $329.50 | $329.50 | $318.81 | $325.48 | -0.38% | 190,103 |
| Jul 30, 2026 | $325.63 | $328.52 | $318.55 | $326.72 | -0.16% | 195,041 |
| Jul 29, 2026 | $331.43 | $337.97 | $326.21 | $327.25 | -1.13% | 361,813 |
| Jul 28, 2026 | $320.01 | $334.61 | $320.01 | $331.00 | +4.61% | 592,280 |
| Jul 27, 2026 | $313.45 | $320.34 | $312.29 | $316.41 | +0.62% | 348,909 |
| Jul 24, 2026 | $316.48 | $317.13 | $311.66 | $314.46 | -0.61% | 355,486 |
| Jul 23, 2026 | $308.47 | $318.70 | $308.47 | $316.38 | +3.41% | 352,751 |
| Jul 22, 2026 | $301.00 | $307.10 | $298.74 | $305.96 | +1.41% | 275,067 |
| Jul 21, 2026 | $290.50 | $302.93 | $285.39 | $301.70 | -0.07% | 302,880 |
| Jul 20, 2026 | $301.71 | $307.49 | $300.16 | $301.90 | -0.81% | 454,218 |
| Jul 17, 2026 | $298.88 | $305.68 | $297.06 | $304.36 | +1.12% | 287,199 |
| Jul 16, 2026 | $295.93 | $302.13 | $295.93 | $300.98 | +1.78% | 237,474 |
| Jul 15, 2026 | $299.74 | $301.71 | $294.82 | $295.73 | -0.87% | 250,697 |
| Jul 14, 2026 | $294.42 | $299.87 | $294.42 | $298.34 | +0.26% | 227,777 |
| Jul 13, 2026 | $295.17 | $299.15 | $292.72 | $297.58 | +0.50% | 339,946 |
| Jul 10, 2026 | $300.00 | $302.16 | $295.96 | $296.11 | -0.39% | 204,531 |
| Jul 9, 2026 | $284.23 | $298.20 | $284.23 | $297.28 | +4.73% | 225,465 |
| Jul 8, 2026 | $289.19 | $290.50 | $281.79 | $283.86 | -2.95% | 253,112 |
| Jul 7, 2026 | $298.37 | $298.65 | $290.00 | $292.50 | -0.90% | 294,391 |
| Jul 6, 2026 | $298.82 | $298.82 | $290.93 | $295.15 | -0.58% | 270,791 |
| Jul 2, 2026 | $298.00 | $302.55 | $295.84 | $296.86 | -0.08% | 344,714 |
| Jul 1, 2026 | $293.11 | $299.54 | $293.06 | $297.09 | +1.19% | 204,201 |
| Jun 30, 2026 | $296.79 | $299.32 | $287.94 | $293.61 | -0.57% | 237,364 |
| Jun 29, 2026 | $300.00 | $301.27 | $294.07 | $295.30 | -1.83% | 329,344 |
| Jun 26, 2026 | $296.80 | $305.00 | $293.46 | $300.79 | +0.84% | 481,973 |
| Jun 25, 2026 | $284.00 | $301.76 | $280.78 | $298.29 | +6.51% | 591,755 |
| Jun 24, 2026 | $273.35 | $284.03 | $270.00 | $280.05 | +3.60% | 322,438 |
| Jun 23, 2026 | $281.62 | $283.76 | $270.28 | $270.32 | -3.84% | 645,327 |
| Jun 22, 2026 | $281.15 | $281.93 | $276.51 | $281.11 | -0.47% | 236,801 |
| Jun 18, 2026 | $284.61 | $285.75 | $280.48 | $282.44 | -0.78% | 402,769 |
| Jun 17, 2026 | $288.78 | $293.11 | $282.69 | $284.67 | -1.82% | 206,955 |
| Jun 16, 2026 | $290.65 | $294.43 | $288.94 | $289.95 | +0.23% | 266,637 |
| Jun 15, 2026 | $288.77 | $292.51 | $285.03 | $289.28 | +1.17% | 226,653 |
| Jun 12, 2026 | $293.57 | $293.83 | $284.57 | $285.94 | -2.22% | 184,392 |
| Jun 11, 2026 | $292.41 | $297.13 | $287.73 | $292.44 | +0.49% | 370,658 |
| Jun 10, 2026 | $296.08 | $298.58 | $290.21 | $291.01 | -2.07% | 370,809 |
| Jun 9, 2026 | $294.30 | $297.92 | $290.35 | $297.17 | +2.01% | 437,001 |
| Jun 8, 2026 | $296.50 | $298.27 | $291.12 | $291.31 | -1.02% | 430,962 |
| Jun 5, 2026 | $305.84 | $307.35 | $291.40 | $294.32 | -4.28% | 346,902 |
| Jun 4, 2026 | $308.66 | $312.27 | $305.53 | $307.47 | +0.87% | 279,055 |
| Jun 3, 2026 | $303.57 | $306.78 | $297.89 | $304.83 | -0.42% | 327,453 |
| Jun 2, 2026 | $300.99 | $308.63 | $299.58 | $306.13 | +0.22% | 405,391 |
| Jun 1, 2026 | $311.10 | $311.10 | $304.84 | $305.46 | -2.25% | 442,210 |
| May 29, 2026 | $318.82 | $319.50 | $310.82 | $312.48 | -1.80% | 521,587 |
| May 28, 2026 | $307.25 | $319.86 | $305.25 | $318.22 | +4.24% | 652,457 |
| May 27, 2026 | $299.00 | $305.81 | $297.50 | $305.29 | +2.83% | 574,425 |
| May 26, 2026 | $287.26 | $297.59 | $284.27 | $296.90 | +3.18% | 454,706 |
| May 22, 2026 | $287.49 | $291.47 | $286.20 | $287.74 | +0.35% | 273,237 |
| May 21, 2026 | $285.77 | $290.56 | $281.86 | $286.74 | -0.39% | 230,769 |
| May 20, 2026 | $282.58 | $288.56 | $275.08 | $287.86 | +2.42% | 551,089 |
| May 19, 2026 | $281.82 | $284.98 | $274.33 | $281.05 | -0.27% | 678,069 |
| May 18, 2026 | $274.72 | $283.63 | $267.83 | $281.82 | +13.85% | 1,263,766 |
| May 15, 2026 | $248.46 | $250.10 | $242.79 | $247.53 | +0.51% | 374,678 |
| May 14, 2026 | $243.69 | $249.35 | $243.43 | $246.27 | +1.13% | 403,534 |
| May 13, 2026 | $239.30 | $245.98 | $236.73 | $243.51 | +0.74% | 425,877 |
| May 12, 2026 | $245.03 | $246.20 | $240.72 | $241.71 | -0.85% | 277,685 |
| May 11, 2026 | $254.35 | $254.35 | $242.62 | $243.79 | -4.14% | 430,848 |
| May 8, 2026 | $256.41 | $258.81 | $251.32 | $254.32 | -1.17% | 230,808 |
| May 7, 2026 | $260.49 | $262.83 | $254.93 | $257.32 | -0.66% | 268,574 |
| May 6, 2026 | $260.47 | $264.06 | $258.60 | $259.02 | +0.74% | 498,479 |
| May 5, 2026 | $259.87 | $263.07 | $251.79 | $257.12 | -0.29% | 520,692 |
| May 4, 2026 | $255.85 | $262.46 | $255.16 | $257.86 | +0.51% | 624,007 |
| May 1, 2026 | $261.47 | $264.30 | $242.28 | $256.55 | -8.41% | 997,705 |
| Apr 30, 2026 | $277.93 | $281.97 | $273.15 | $280.12 | +1.81% | 650,158 |
| Apr 29, 2026 | $278.70 | $283.52 | $273.46 | $275.15 | -1.50% | 293,018 |
| Apr 28, 2026 | $287.49 | $288.52 | $276.66 | $279.34 | -2.77% | 339,257 |
| Apr 27, 2026 | $287.80 | $294.05 | $284.65 | $287.29 | -0.19% | 223,004 |
| Apr 24, 2026 | $281.61 | $288.49 | $280.35 | $287.84 | +2.28% | 218,791 |
| Apr 23, 2026 | $294.82 | $294.82 | $274.90 | $281.42 | -6.44% | 423,542 |
| Apr 22, 2026 | $307.50 | $308.38 | $298.22 | $300.78 | -1.60% | 232,542 |
| Apr 21, 2026 | $305.05 | $312.85 | $301.55 | $305.67 | +0.77% | 228,427 |
| Apr 20, 2026 | $297.46 | $304.60 | $295.98 | $303.34 | +1.44% | 171,741 |
| Apr 17, 2026 | $294.93 | $302.32 | $292.19 | $299.02 | +2.72% | 186,519 |
| Apr 16, 2026 | $294.68 | $294.69 | $289.70 | $291.09 | -1.65% | 286,869 |
| Apr 15, 2026 | $293.73 | $297.50 | $292.15 | $295.96 | +1.28% | 208,831 |
| Apr 14, 2026 | $289.53 | $294.71 | $289.53 | $292.23 | +1.41% | 200,337 |
| Apr 13, 2026 | $278.83 | $289.50 | $278.83 | $288.17 | +3.19% | 213,516 |
| Apr 10, 2026 | $278.25 | $279.53 | $275.40 | $279.25 | +0.63% | 276,583 |
| Apr 9, 2026 | $278.54 | $280.97 | $273.04 | $277.50 | -1.30% | 293,765 |
| Apr 8, 2026 | $285.37 | $288.72 | $280.91 | $281.15 | +1.13% | 388,929 |
| Apr 7, 2026 | $272.21 | $279.24 | $270.37 | $278.00 | -0.30% | 219,262 |
| Apr 6, 2026 | $279.57 | $280.78 | $276.32 | $278.85 | -0.41% | 272,845 |
| Apr 2, 2026 | $275.31 | $284.45 | $274.08 | $279.99 | +0.59% | 253,681 |
| Apr 1, 2026 | $280.38 | $282.89 | $277.86 | $278.36 | -0.14% | 176,901 |
| Mar 31, 2026 | $273.70 | $280.60 | $270.85 | $278.75 | +3.10% | 196,355 |
| Mar 30, 2026 | $268.76 | $272.75 | $265.64 | $270.36 | +1.87% | 589,768 |
| Mar 27, 2026 | $276.51 | $276.51 | $264.23 | $265.40 | -4.02% | 339,742 |
| Mar 26, 2026 | $272.48 | $277.82 | $272.48 | $276.53 | +1.07% | 436,678 |
| Mar 25, 2026 | $273.92 | $276.14 | $269.10 | $273.60 | +0.54% | 252,437 |
| Mar 24, 2026 | $261.29 | $273.79 | $260.59 | $272.12 | +2.69% | 543,684 |
| Mar 23, 2026 | $268.70 | $270.56 | $263.65 | $265.00 | +0.19% | 360,927 |
| Mar 20, 2026 | $267.43 | $267.73 | $262.05 | $264.49 | -0.19% | 462,439 |
| Mar 19, 2026 | $266.24 | $270.67 | $263.24 | $265.00 | -1.12% | 356,869 |
| Mar 18, 2026 | $266.27 | $270.90 | $266.27 | $267.99 | -0.55% | 286,583 |
| Mar 17, 2026 | $264.41 | $272.40 | $263.78 | $269.48 | +3.15% | 258,267 |
| Mar 16, 2026 | $265.57 | $267.82 | $258.95 | $261.24 | -0.59% | 209,675 |
| Mar 13, 2026 | $265.20 | $270.00 | $261.38 | $262.80 | +0.37% | 161,773 |
| Mar 12, 2026 | $267.03 | $270.05 | $259.56 | $261.82 | -2.99% | 364,094 |
| Mar 11, 2026 | $266.42 | $270.77 | $265.57 | $269.89 | +0.76% | 206,663 |
| Mar 10, 2026 | $271.25 | $271.32 | $265.36 | $267.85 | -1.32% | 198,788 |
| Mar 9, 2026 | $268.20 | $272.04 | $264.92 | $271.44 | +0.59% | 314,932 |
| Mar 6, 2026 | $275.96 | $275.96 | $267.55 | $269.85 | -3.29% | 276,869 |
| Mar 5, 2026 | $280.81 | $288.81 | $278.65 | $279.03 | -1.98% | 292,278 |
| Mar 4, 2026 | $282.15 | $285.75 | $279.96 | $284.68 | +1.60% | 272,508 |
| Mar 3, 2026 | $274.16 | $281.57 | $273.68 | $280.19 | +0.21% | 270,571 |
| Mar 2, 2026 | $275.41 | $282.32 | $273.56 | $279.59 | +0.41% | 302,937 |
| Feb 27, 2026 | $272.07 | $280.52 | $271.71 | $278.44 | +1.17% | 376,915 |
| Feb 26, 2026 | $270.94 | $275.71 | $268.00 | $275.21 | +2.06% | 260,411 |
| Feb 25, 2026 | $275.19 | $275.87 | $267.82 | $269.65 | +0.35% | 253,433 |
| Feb 24, 2026 | $268.26 | $275.99 | $267.82 | $268.70 | +0.17% | 241,728 |
| Feb 23, 2026 | $269.26 | $271.03 | $267.13 | $268.25 | -1.12% | 282,171 |
| Feb 20, 2026 | $270.00 | $272.59 | $267.65 | $271.30 | -0.22% | 257,082 |
| Feb 19, 2026 | $268.95 | $272.62 | $265.06 | $271.90 | +0.45% | 249,495 |
| Feb 18, 2026 | $264.28 | $271.84 | $263.51 | $270.67 | +2.17% | 341,911 |
| Feb 17, 2026 | $256.00 | $268.52 | $254.59 | $264.93 | +3.26% | 504,668 |
| Feb 13, 2026 | $251.00 | $272.79 | $251.00 | $256.56 | -12.26% | 1,060,713 |
| Feb 12, 2026 | $292.50 | $296.34 | $282.66 | $292.42 | -0.43% | 426,697 |
| Feb 11, 2026 | $297.22 | $298.96 | $291.90 | $293.69 | -2.09% | 227,163 |
| Feb 10, 2026 | $297.78 | $301.47 | $294.58 | $299.96 | +1.72% | 188,736 |
| Feb 9, 2026 | $298.17 | $299.11 | $287.59 | $294.90 | -2.19% | 256,272 |
| Feb 6, 2026 | $301.66 | $307.39 | $298.35 | $301.50 | +0.65% | 201,716 |
| Feb 5, 2026 | $304.83 | $307.41 | $298.09 | $299.54 | -2.08% | 166,601 |
| Feb 4, 2026 | $300.93 | $306.72 | $298.90 | $305.90 | +2.31% | 277,124 |
| Feb 3, 2026 | $298.14 | $313.41 | $296.45 | $298.98 | +0.52% | 367,224 |
| Feb 2, 2026 | $289.11 | $297.91 | $289.11 | $297.43 | +1.27% | 159,003 |
| Jan 30, 2026 | $290.89 | $295.76 | $289.19 | $293.70 | -0.41% | 173,163 |
| Jan 29, 2026 | $298.73 | $299.26 | $287.46 | $294.91 | -1.63% | 347,284 |
| Jan 28, 2026 | $297.52 | $302.59 | $294.82 | $299.79 | +0.70% | 290,883 |
| Jan 27, 2026 | $295.96 | $300.59 | $295.96 | $297.71 | -0.52% | 138,014 |
| Jan 26, 2026 | $295.59 | $301.57 | $294.16 | $299.28 | +0.91% | 233,349 |
| Jan 23, 2026 | $303.50 | $308.57 | $293.94 | $296.57 | -2.83% | 227,536 |
| Jan 22, 2026 | $313.11 | $315.70 | $304.17 | $305.22 | -2.03% | 301,892 |
| Jan 21, 2026 | $313.73 | $316.63 | $308.42 | $311.54 | -0.39% | 457,475 |
| Jan 20, 2026 | $308.35 | $315.25 | $306.52 | $312.76 | -0.25% | 130,351 |
| Jan 16, 2026 | $322.82 | $322.82 | $313.47 | $313.53 | -2.65% | 150,274 |
| Jan 15, 2026 | $318.81 | $323.32 | $315.00 | $322.06 | +1.20% | 236,015 |
| Jan 14, 2026 | $320.83 | $325.93 | $316.60 | $318.25 | -1.22% | 230,751 |
| Jan 13, 2026 | $323.49 | $328.56 | $316.57 | $322.17 | -0.26% | 183,801 |
| Jan 12, 2026 | $325.80 | $325.80 | $319.91 | $323.00 | -0.25% | 198,207 |
| Jan 9, 2026 | $321.36 | $326.43 | $318.18 | $323.82 | +1.49% | 191,091 |
| Jan 8, 2026 | $321.12 | $324.75 | $313.88 | $319.08 | -1.55% | 223,780 |
| Jan 7, 2026 | $325.81 | $326.90 | $320.22 | $324.09 | -0.43% | 200,614 |
| Jan 6, 2026 | $323.94 | $328.25 | $320.00 | $325.50 | +0.98% | 373,724 |
| Jan 5, 2026 | $302.25 | $322.61 | $302.25 | $322.34 | +5.59% | 262,734 |
| Jan 2, 2026 | $303.22 | $307.31 | $300.42 | $305.27 | +0.75% | 137,105 |
| Dec 31, 2025 | $305.81 | $305.98 | $300.26 | $302.99 | -0.50% | 99,757 |
| Dec 30, 2025 | $301.27 | $305.00 | $300.32 | $304.51 | +0.26% | 97,459 |
| Dec 29, 2025 | $303.88 | $305.62 | $301.07 | $303.73 | -0.05% | 148,792 |
| Dec 26, 2025 | $302.46 | $304.42 | $300.47 | $303.88 | +0.71% | 93,972 |
| Dec 24, 2025 | $301.00 | $302.72 | $298.78 | $301.75 | +0.24% | 76,223 |
| Dec 23, 2025 | $304.21 | $304.21 | $298.85 | $301.03 | -1.25% | 156,953 |
| Dec 22, 2025 | $302.02 | $307.07 | $298.80 | $304.85 | +1.10% | 194,379 |
| Dec 19, 2025 | $299.98 | $302.63 | $295.01 | $301.53 | +0.56% | 425,765 |
| Dec 18, 2025 | $303.87 | $307.78 | $298.97 | $299.86 | -0.47% | 163,961 |
| Dec 17, 2025 | $301.04 | $304.91 | $298.74 | $301.28 | -0.25% | 179,531 |
| Dec 16, 2025 | $308.10 | $309.79 | $298.02 | $302.02 | -1.92% | 173,119 |
| Dec 15, 2025 | $310.00 | $312.81 | $301.30 | $307.92 | -0.07% | 202,306 |
| Dec 12, 2025 | $313.97 | $314.97 | $306.36 | $308.13 | -1.86% | 110,658 |
| Dec 11, 2025 | $315.00 | $319.50 | $310.11 | $313.97 | -0.33% | 108,186 |
| Dec 10, 2025 | $309.74 | $316.20 | $307.08 | $315.00 | +2.26% | 169,734 |
| Dec 9, 2025 | $308.00 | $312.98 | $307.35 | $308.05 | -0.16% | 152,446 |
| Dec 8, 2025 | $314.86 | $316.73 | $308.05 | $308.53 | -2.88% | 134,082 |
| Dec 5, 2025 | $322.74 | $325.33 | $316.94 | $317.69 | -0.74% | 174,009 |
| Dec 4, 2025 | $320.00 | $321.00 | $311.81 | $320.06 | -0.09% | 114,275 |
| Dec 3, 2025 | $321.75 | $322.50 | $317.03 | $320.34 | +0.56% | 271,826 |
| Dec 2, 2025 | $320.48 | $323.99 | $317.50 | $318.56 | -0.91% | 210,135 |
| Dec 1, 2025 | $321.44 | $328.07 | $319.52 | $321.50 | -1.03% | 133,109 |
| Nov 28, 2025 | $323.65 | $327.69 | $321.10 | $324.86 | -0.66% | 86,310 |
| Nov 26, 2025 | $330.38 | $334.00 | $326.64 | $327.03 | -1.56% | 126,340 |
| Nov 25, 2025 | $322.69 | $334.53 | $321.73 | $332.21 | +3.02% | 145,512 |
| Nov 24, 2025 | $314.85 | $324.00 | $311.63 | $322.48 | +1.83% | 383,303 |
| Nov 21, 2025 | $303.63 | $320.14 | $303.63 | $316.70 | +4.31% | 126,652 |
| Nov 20, 2025 | $309.05 | $311.55 | $298.35 | $303.61 | -0.39% | 214,108 |
| Nov 19, 2025 | $310.50 | $310.50 | $301.33 | $304.79 | -0.97% | 192,716 |
| Nov 18, 2025 | $303.41 | $311.47 | $296.15 | $307.78 | +1.22% | 149,366 |
| Nov 17, 2025 | $313.67 | $315.35 | $303.30 | $304.06 | -2.90% | 165,038 |
| Nov 14, 2025 | $314.11 | $316.88 | $307.67 | $313.15 | -1.18% | 107,292 |
| Nov 13, 2025 | $322.68 | $326.79 | $316.56 | $316.89 | -3.17% | 176,080 |
| Nov 12, 2025 | $313.28 | $328.52 | $312.64 | $327.28 | +4.45% | 247,359 |
| Nov 11, 2025 | $309.85 | $315.86 | $306.90 | $313.33 | +1.94% | 116,392 |
| Nov 10, 2025 | $307.99 | $314.05 | $305.97 | $307.38 | +0.60% | 116,462 |
| Nov 7, 2025 | $304.92 | $307.51 | $302.30 | $305.56 | -0.32% | 136,235 |
| Nov 6, 2025 | $308.59 | $310.85 | $304.12 | $306.55 | -1.12% | 134,895 |
| Nov 5, 2025 | $308.65 | $312.87 | $303.44 | $310.01 | -0.31% | 179,617 |
| Nov 4, 2025 | $309.87 | $316.20 | $301.92 | $310.96 | -0.15% | 196,084 |
| Nov 3, 2025 | $317.04 | $319.85 | $308.36 | $311.43 | -2.54% | 252,595 |
| Oct 31, 2025 | $305.75 | $321.59 | $300.04 | $319.55 | +4.90% | 285,192 |
| Oct 30, 2025 | $316.00 | $328.96 | $298.22 | $304.61 | -4.65% | 429,218 |
| Oct 29, 2025 | $328.03 | $334.98 | $315.10 | $319.47 | -3.31% | 510,291 |
| Oct 28, 2025 | $336.44 | $340.68 | $327.40 | $330.42 | -1.70% | 305,175 |
| Oct 27, 2025 | $337.74 | $343.12 | $334.91 | $336.12 | -1.07% | 289,942 |
| Oct 24, 2025 | $341.03 | $342.16 | $337.22 | $339.75 | +0.32% | 161,557 |
| Oct 23, 2025 | $331.63 | $340.93 | $326.64 | $338.67 | +1.41% | 287,346 |
| Oct 22, 2025 | $329.01 | $337.78 | $327.85 | $333.97 | +0.82% | 573,598 |
| Oct 21, 2025 | $326.08 | $335.85 | $323.75 | $331.27 | +2.91% | 375,599 |
| Oct 20, 2025 | $312.99 | $322.54 | $305.32 | $321.90 | – | 199,074 |
Seasonality
BIO 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 | 1.3% | -0.9% | -0.7% | 0.9% | 1.7% | -0.1% | 9.8% | 3.8% | -4.2% | -1.3% | 5.3% | -2.4% |
| Months up | 5 of 10 | 7 of 10 | 5 of 10 | 6 of 10 | 6 of 10 | 6 of 10 | 10 of 10 | 5 of 10 | 2 of 10 | 4 of 10 | 6 of 9 | 5 of 9 |
| 2026 | -3.1% | -5.2% | 0.1% | 0.5% | 11.6% | -6.0% | 10.9% | 18.6% | -2.2% | -1.5% | ||
| 2025 | 9.9% | -26.5% | -8.1% | 0.2% | -7.0% | 6.3% | 0.3% | 23.1% | -5.9% | 14.0% | 1.7% | -6.7% |
| 2024 | -0.6% | 1.6% | 6.1% | -22.0% | 6.3% | -4.8% | 23.9% | -0.3% | -0.8% | 7.1% | -4.9% | -3.5% |
| 2023 | 11.2% | 2.2% | 0.2% | -5.9% | -17.2% | 1.5% | 6.9% | -1.3% | -10.4% | -23.2% | 10.8% | 5.9% |
| 2022 | -20.6% | 4.4% | -10.0% | -9.1% | 5.0% | -8.0% | 13.8% | -13.9% | -14.0% | -15.7% | 17.9% | 1.4% |
| 2021 | -1.6% | 1.9% | -2.3% | 10.3% | -4.4% | 7.0% | 14.8% | 8.8% | -7.3% | 6.5% | -5.2% | 0.3% |
| 2020 | -2.5% | -2.5% | -0.4% | 25.5% | 11.6% | -8.1% | 16.3% | -3.1% | 1.4% | 13.8% | -8.2% | 8.3% |
| 2019 | 7.6% | 8.4% | 12.8% | -1.6% | -4.7% | 8.9% | 0.7% | 7.2% | -1.5% | -0.3% | 11.4% | 0.2% |
| 2018 | 8.3% | 4.5% | -7.4% | 1.5% | 13.2% | 0.5% | 6.3% | 6.1% | -3.8% | -12.8% | 0.6% | -15.4% |
| 2017 | 4.3% | 2.4% | 2.4% | 9.5% | 2.4% | 1.3% | 4.1% | -7.6% | 2.0% | -1.1% | 23.4% | -12.0% |