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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 week, newest first. Adjusted for stock splits, not for dividends.

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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
Week ofOpenHighLowCloseChangeVolume
Oct 26, 2026$364.15$380.57$364.15$379.50+4.22%272
Oct 19, 2026$364.15$367.66$354.28$364.150.00%92
Oct 12, 2026$365.08$365.08$364.15$364.15-0.25%314
Oct 5, 2026$365.08$365.08$365.08$365.080.00%50
Sep 28, 2026$365.08$365.08$365.08$365.080.00%42
Sep 21, 2026$365.08$365.08$365.08$365.080.00%140
Sep 14, 2026$365.08$365.08$365.08$365.080.00%74
Sep 8, 2026$365.08$365.08$365.08$365.080.00%93
Aug 31, 2026$365.08$365.08$365.08$365.080.00%211
Aug 24, 2026$365.08$365.08$365.08$365.080.00%104
Aug 17, 2026$337.00$365.08$337.00$365.08+8.33%207
Aug 10, 2026$337.00$337.00$337.00$337.000.00%55
Aug 3, 2026$337.00$337.00$337.00$337.00+8.93%116
Jul 27, 2026$309.37$309.37$309.37$309.370.00%81
Jul 20, 2026$309.37$309.37$309.37$309.370.00%39
Jul 13, 2026$309.37$309.37$309.37$309.37+3.64%133
Jul 6, 2026$296.49$298.50$293.37$298.50+0.68%869
Jun 29, 2026$296.49$296.49$296.49$296.490.00%63
Jun 22, 2026$304.15$304.15$289.23$296.49-2.52%1,031
Jun 15, 2026$304.15$304.15$304.15$304.150.00%21
Jun 8, 2026$304.15$304.15$304.15$304.150.00%135
Jun 1, 2026$304.15$304.15$304.15$304.150.00%52
May 26, 2026$267.43$304.15$267.43$304.15+13.73%84
May 18, 2026$267.43$267.43$267.43$267.43+2.50%157
May 11, 2026$255.54$260.90$244.54$260.90+2.10%3,980
May 4, 2026$299.45$299.45$255.54$255.54-14.66%1,403
Apr 27, 2026$299.45$299.45$299.45$299.450.00%664
Apr 20, 2026$277.00$299.45$277.00$299.45+8.10%119
Apr 13, 2026$277.00$277.00$277.00$277.000.00%34
Apr 6, 2026$278.25$278.25$277.00$277.00-0.45%132
Mar 30, 2026$268.55$278.30$268.55$278.25+3.61%174
Mar 23, 2026$268.55$268.55$268.55$268.550.00%58
Mar 16, 2026$268.55$268.55$268.55$268.550.00%14
Mar 9, 2026$267.80$268.55$267.59$268.55-4.75%451
Mar 2, 2026$268.89$281.95$268.89$281.95+4.86%55
Feb 23, 2026$268.89$268.89$268.89$268.89+2.70%112
Feb 17, 2026$257.05$261.83$257.05$261.83+1.86%119
Feb 9, 2026$295.05$295.05$257.05$257.05-12.88%69
Feb 2, 2026$291.36$295.05$291.36$295.05-5.66%1,944
Jan 26, 2026$312.75$312.75$312.75$312.750.00%20
Jan 20, 2026$312.75$312.75$312.75$312.75+0.66%66
Jan 12, 2026$310.70$310.70$310.70$310.700.00%63
Jan 5, 2026$310.70$310.70$310.70$310.700.00%35
Dec 29, 2025$310.70$310.70$310.70$310.700.00%19
Dec 22, 2025$310.70$310.70$310.70$310.700.00%28
Dec 15, 2025$310.70$310.70$310.70$310.700.00%76
Dec 8, 2025$310.70$310.70$310.70$310.700.00%71
Dec 1, 2025$310.70$310.70$310.70$310.700.00%124
Nov 24, 2025$310.70$310.70$310.70$310.700.00%159
Nov 17, 2025$310.45$310.70$310.45$310.70-1.18%172
Nov 10, 2025$305.40$315.08$305.40$314.40+2.95%189
Nov 3, 2025$303.15$306.10$303.15$305.40+0.74%2,274

Seasonality

BIO.B return in each calendar month over the last 10 years, including dividends. The current month runs to the latest close.

YearJanFebMarAprMayJunJulAugSepOctNovDec
Average0.8%-0.7%0.4%1.9%0.2%-0.5%6.1%4.6%-1.7%-2.2%4.3%-1.4%
Months up6 of 105 of 107 of 106 of 105 of 104 of 109 of 106 of 103 of 105 of 108 of 93 of 9
20260.7%-14.0%3.5%7.6%1.6%-2.5%4.3%18.0%0.0%3.9%
20259.8%-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%
20230.0%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%
20201.6%-6.8%0.4%24.0%7.1%-6.3%19.6%-0.6%-2.2%16.3%-8.6%6.2%
20193.5%14.7%11.0%1.2%-1.5%1.4%5.8%4.0%1.1%1.3%0.6%6.5%
201810.9%-6.8%1.9%4.3%9.7%-0.4%7.8%5.0%-7.9%-8.3%0.4%-16.1%
20172.3%1.8%4.7%4.1%6.1%1.9%5.1%-7.7%4.4%-2.1%14.5%-6.8%