Bio-Rad Laboratories, Inc. Class B BIO.B
Open calendar →Bio-Rad Laboratories, Inc. Class B Common Stock · Company · NYSE
USD closing-price chart (daily close from yfinance · Last year)
USD 257.75 → 309.37 · 20.0%
Numbered dotted lines mark the filtered filings under Announcement Events below.
Price & SEC Filing History 22 Jul 2025 — 23 Jul 2026 (Last year)
Daily NYSE prices are sourced from yfinance. Yellow highlighting marks an intraday rise or a gap up between adjacent trading sessions. SEC acceptance times are converted to US Eastern time: pre-market filings appear below that day’s OHLCV row; filings accepted after the 09:30 ET open appear above it. The SEC does not publish an exact first-public-availability timestamp, so acceptance time is the best available proxy.
Date
Open
High
Low
Close
Volume
No data yet
No data yet
309.3700
309.3700
309.3700
309.3700
0
309.3700
309.3700
309.3700
309.3700
0
Weekend
Weekend
309.3700
309.3700
309.3700
309.3700
0
309.3700
309.3700
309.3700
309.3700
0
309.3700
309.3700
309.3700
309.3700
0
309.3700
309.3700
309.3700
309.3700
0
309.3700
309.3700
309.3700
309.3700
100
Weekend
Weekend
298.5000
298.5000
298.5000
298.5000
100
293.3700
293.3700
293.3700
293.3700
0
293.3700
293.3700
293.3700
293.3700
300
296.4900
296.4900
296.4900
296.4900
0
296.4900
296.4900
296.4900
296.4900
0
Weekend
Weekend
No trading
296.4900
296.4900
296.4900
296.4900
0
296.4900
296.4900
296.4900
296.4900
0
296.4900
296.4900
296.4900
296.4900
0
296.4900
296.4900
296.4900
296.4900
0
Weekend
Weekend
296.4900
296.4900
296.4900
296.4900
0
296.4900
296.4900
296.4900
296.4900
0
291.9900
296.4900
291.9900
296.4900
200
297.2200
297.9600
289.2300
290.0000
800
304.1500
304.1500
304.1500
304.1500
0
Weekend
Weekend
No trading
304.1500
304.1500
304.1500
304.1500
0
304.1500
304.1500
304.1500
304.1500
0
304.1500
304.1500
304.1500
304.1500
0
304.1500
304.1500
304.1500
304.1500
0
Weekend
Weekend
304.1500
304.1500
304.1500
304.1500
0
304.1500
304.1500
304.1500
304.1500
0
304.1500
304.1500
304.1500
304.1500
0
304.1500
304.1500
304.1500
304.1500
0
304.1500
304.1500
304.1500
304.1500
0
Weekend
Weekend
304.1500
304.1500
304.1500
304.1500
0
304.1500
304.1500
304.1500
304.1500
0
304.1500
304.1500
304.1500
304.1500
0
304.1500
304.1500
304.1500
304.1500
0
304.1500
304.1500
304.1500
304.1500
0
Weekend
Weekend
304.1500
304.1500
304.1500
304.1500
0
304.1500
304.1500
304.1500
304.1500
0
304.1500
304.1500
304.1500
304.1500
100
267.4300
267.4300
267.4300
267.4300
0
No trading
Weekend
Weekend
267.4300
267.4300
267.4300
267.4300
0
267.4300
267.4300
267.4300
267.4300
0
267.4300
267.4300
267.4300
267.4300
0
267.4300
267.4300
267.4300
267.4300
0
267.4300
267.4300
267.4300
267.4300
100
Weekend
Weekend
253.1700
260.9000
253.1300
260.9000
600
244.5400
260.0000
244.5400
260.0000
3,400
255.5400
255.5400
255.5400
255.5400
0
255.5400
255.5400
255.5400
255.5400
0
255.5400
255.5400
255.5400
255.5400
0
Weekend
Weekend
255.5400
255.5400
255.5400
255.5400
400
261.2700
261.2700
261.2700
261.2700
0
261.4000
261.4000
261.2700
261.2700
100
257.7100
258.4600
255.9000
258.4600
900
299.4500
299.4500
299.4500
299.4500
0
Weekend
Weekend
299.4500
299.4500
299.4500
299.4500
0
14 · 10-Q
After-hours · 16:19 ET
10-Q ↗
13 · 8-K
After-hours · 16:17 ET
8-K ↗
299.4500
299.4500
299.4500
299.4500
0
299.4500
299.4500
299.4500
299.4500
0
299.4500
299.4500
299.4500
299.4500
0
299.4500
299.4500
299.4500
299.4500
0
Weekend
Weekend
12 · 8-K
After-hours · 16:30 ET
8-K ↗
299.4500
299.4500
299.4500
299.4500
0
299.4500
299.4500
299.4500
299.4500
0
299.4500
299.4500
299.4500
299.4500
100
277.0000
277.0000
277.0000
277.0000
0
277.0000
277.0000
277.0000
277.0000
0
Weekend
Weekend
277.0000
277.0000
277.0000
277.0000
0
277.0000
277.0000
277.0000
277.0000
0
277.0000
277.0000
277.0000
277.0000
0
277.0000
277.0000
277.0000
277.0000
0
277.0000
277.0000
277.0000
277.0000
0
Weekend
Weekend
277.0000
277.0000
277.0000
277.0000
0
277.0000
277.0000
277.0000
277.0000
0
277.0000
277.0000
277.0000
277.0000
0
277.0000
277.0000
277.0000
277.0000
100
278.2500
278.2500
278.2500
278.2500
0
Weekend
Weekend
No trading
278.2500
278.2500
278.2500
278.2500
0
278.2500
278.2500
278.2500
278.2500
0
278.3000
278.3000
278.2500
278.2500
200
268.5500
268.5500
268.5500
268.5500
0
Weekend
Weekend
268.5500
268.5500
268.5500
268.5500
0
268.5500
268.5500
268.5500
268.5500
0
11 · DEF 14A
After-hours · 16:17 ET
DEFINITIVE PROXY STATEMENT ↗
268.5500
268.5500
268.5500
268.5500
0
268.5500
268.5500
268.5500
268.5500
0
268.5500
268.5500
268.5500
268.5500
0
Weekend
Weekend
268.5500
268.5500
268.5500
268.5500
0
268.5500
268.5500
268.5500
268.5500
0
268.5500
268.5500
268.5500
268.5500
0
268.5500
268.5500
268.5500
268.5500
0
268.5500
268.5500
268.5500
268.5500
0
Weekend
Weekend
268.5500
268.5500
268.5500
268.5500
0
268.5500
268.5500
268.5500
268.5500
100
268.5000
268.5000
268.5000
268.5000
0
268.5000
268.5000
268.5000
268.5000
0
267.8000
268.5000
267.5900
268.5000
300
Weekend
Weekend
281.9500
281.9500
281.9500
281.9500
0
281.9500
281.9500
281.9500
281.9500
0
281.9500
281.9500
281.9500
281.9500
100
268.8900
268.8900
268.8900
268.8900
0
268.8900
268.8900
268.8900
268.8900
0
Weekend
Weekend
268.8900
268.8900
268.8900
268.8900
0
268.8900
268.8900
268.8900
268.8900
0
268.8900
268.8900
268.8900
268.8900
0
268.8900
268.8900
268.8900
268.8900
0
268.8900
268.8900
268.8900
268.8900
100
Weekend
Weekend
261.8300
261.8300
261.8300
261.8300
0
10 · 8-K
After-hours · 16:15 ET
8-K ↗
261.8300
261.8300
261.8300
261.8300
0
261.8300
261.8300
261.8300
261.8300
100
257.0500
257.0500
257.0500
257.0500
0
No trading
Weekend
Weekend
257.0500
257.0500
257.0500
257.0500
100
9 · 10-K
Next filing day · accepted 12 Feb, 21:50 ET
10-K ↗
8 · 8-K
After-hours · 16:16 ET
8-K ↗
295.0500
295.0500
295.0500
295.0500
0
295.0500
295.0500
295.0500
295.0500
0
295.0500
295.0500
295.0500
295.0500
0
295.0500
295.0500
295.0500
295.0500
0
Weekend
Weekend
295.0500
295.0500
295.0500
295.0500
0
295.0500
295.0500
295.0500
295.0500
0
295.0500
295.0500
295.0500
295.0500
0
295.0500
295.0500
295.0500
295.0500
0
291.3600
295.0500
291.3600
295.0500
1,900
Weekend
Weekend
312.7500
312.7500
312.7500
312.7500
0
312.7500
312.7500
312.7500
312.7500
0
312.7500
312.7500
312.7500
312.7500
0
312.7500
312.7500
312.7500
312.7500
0
312.7500
312.7500
312.7500
312.7500
0
Weekend
Weekend
312.7500
312.7500
312.7500
312.7500
0
312.7500
312.7500
312.7500
312.7500
0
312.7500
312.7500
312.7500
312.7500
0
312.7500
312.7500
312.7500
312.7500
100
No trading
Weekend
Weekend
310.7000
310.7000
310.7000
310.7000
0
310.7000
310.7000
310.7000
310.7000
0
310.7000
310.7000
310.7000
310.7000
0
310.7000
310.7000
310.7000
310.7000
0
310.7000
310.7000
310.7000
310.7000
0
Weekend
Weekend
310.7000
310.7000
310.7000
310.7000
0
310.7000
310.7000
310.7000
310.7000
0
310.7000
310.7000
310.7000
310.7000
0
310.7000
310.7000
310.7000
310.7000
0
310.7000
310.7000
310.7000
310.7000
0
Weekend
Weekend
310.7000
310.7000
310.7000
310.7000
0
No trading
310.7000
310.7000
310.7000
310.7000
0
310.7000
310.7000
310.7000
310.7000
0
310.7000
310.7000
310.7000
310.7000
0
Weekend
Weekend
310.7000
310.7000
310.7000
310.7000
0
No trading
310.7000
310.7000
310.7000
310.7000
0
310.7000
310.7000
310.7000
310.7000
0
310.7000
310.7000
310.7000
310.7000
0
Weekend
Weekend
310.7000
310.7000
310.7000
310.7000
0
310.7000
310.7000
310.7000
310.7000
0
310.7000
310.7000
310.7000
310.7000
0
310.7000
310.7000
310.7000
310.7000
0
310.7000
310.7000
310.7000
310.7000
0
Weekend
Weekend
310.7000
310.7000
310.7000
310.7000
0
310.7000
310.7000
310.7000
310.7000
0
310.7000
310.7000
310.7000
310.7000
0
310.7000
310.7000
310.7000
310.7000
0
310.7000
310.7000
310.7000
310.7000
0
Weekend
Weekend
310.7000
310.7000
310.7000
310.7000
0
310.7000
310.7000
310.7000
310.7000
0
310.7000
310.7000
310.7000
310.7000
0
310.7000
310.7000
310.7000
310.7000
0
310.7000
310.7000
310.7000
310.7000
0
Weekend
Weekend
310.7000
310.7000
310.7000
310.7000
0
No trading
310.7000
310.7000
310.7000
310.7000
0
310.7000
310.7000
310.7000
310.7000
0
310.7000
310.7000
310.7000
310.7000
0
Weekend
Weekend
310.7000
310.7000
310.7000
310.7000
0
310.7000
310.7000
310.7000
310.7000
0
310.7000
310.7000
310.7000
310.7000
0
310.7000
310.7000
310.7000
310.7000
0
310.4500
310.7000
310.4500
310.7000
100
Weekend
Weekend
315.0800
315.0800
314.4000
314.4000
100
305.4000
305.4000
305.4000
305.4000
0
305.4000
305.4000
305.4000
305.4000
0
305.4000
305.4000
305.4000
305.4000
0
305.4000
305.4000
305.4000
305.4000
0
Weekend
Weekend
305.4000
305.4000
305.4000
305.4000
0
305.4000
305.4000
305.4000
305.4000
200
305.7900
306.1000
305.5500
305.8500
2,100
303.1500
303.1500
303.1500
303.1500
0
303.1500
303.1500
303.1500
303.1500
0
Weekend
Weekend
303.1500
303.1500
303.1500
303.1500
0
303.3500
303.3500
303.1500
303.1500
400
7 · 10-Q
After-hours · 16:18 ET
10-Q ↗
6 · 8-K
After-hours · 16:16 ET
8-K ↗
321.1200
321.1200
321.1200
321.1200
0
321.1200
321.1200
321.1200
321.1200
0
321.1200
321.1200
321.1200
321.1200
0
Weekend
Weekend
321.1200
321.1200
321.1200
321.1200
0
321.1200
321.1200
321.1200
321.1200
0
321.1200
321.1200
321.1200
321.1200
0
321.1200
321.1200
321.1200
321.1200
200
284.8800
284.8800
284.8800
284.8800
0
Weekend
Weekend
284.8800
284.8800
284.8800
284.8800
0
284.8800
284.8800
284.8800
284.8800
0
284.8800
284.8800
284.8800
284.8800
0
284.8800
284.8800
284.8800
284.8800
0
284.8800
284.8800
284.8800
284.8800
0
Weekend
Weekend
284.8800
284.8800
284.8800
284.8800
0
284.8800
284.8800
284.8800
284.8800
0
284.8800
284.8800
284.8800
284.8800
0
284.8800
284.8800
284.8800
284.8800
0
284.8800
284.8800
284.8800
284.8800
0
Weekend
Weekend
284.8800
284.8800
284.8800
284.8800
0
284.8800
284.8800
284.8800
284.8800
0
284.8800
284.8800
284.8800
284.8800
0
284.8800
284.8800
284.8800
284.8800
0
5 · 8-K
Pre-market · 06:02 ET
8-K ↗
284.8800
284.8800
284.8800
284.8800
0
Weekend
Weekend
284.8800
284.8800
284.8800
284.8800
0
284.8800
284.8800
284.8800
284.8800
0
284.8800
284.8800
284.8800
284.8800
0
284.8800
284.8800
284.8800
284.8800
0
284.8800
284.8800
284.8800
284.8800
0
Weekend
Weekend
283.8500
284.8800
283.8500
284.8800
400
247.0500
247.0500
247.0500
247.0500
0
247.0500
247.0500
247.0500
247.0500
0
247.0500
247.0500
247.0500
247.0500
0
247.0500
247.0500
247.0500
247.0500
0
Weekend
Weekend
247.0500
247.0500
247.0500
247.0500
0
247.0500
247.0500
247.0500
247.0500
0
247.0500
247.0500
247.0500
247.0500
0
247.0500
247.0500
247.0500
247.0500
0
247.0500
247.0500
247.0500
247.0500
0
Weekend
Weekend
247.0500
247.0500
247.0500
247.0500
0
247.0500
247.0500
247.0500
247.0500
0
247.0500
247.0500
247.0500
247.0500
0
247.0500
247.0500
247.0500
247.0500
0
No trading
Weekend
Weekend
247.0500
247.0500
247.0500
247.0500
0
247.0500
247.0500
247.0500
247.0500
0
247.0500
247.0500
247.0500
247.0500
0
247.0500
247.0500
247.0500
247.0500
0
4 · 8-K
Pre-market · 09:00 ET
8-K ↗
247.0500
247.0500
247.0500
247.0500
0
Weekend
Weekend
247.0500
247.0500
247.0500
247.0500
0
247.0500
247.0500
247.0500
247.0500
0
247.0500
247.0500
247.0500
247.0500
0
247.0500
247.0500
247.0500
247.0500
0
247.0500
247.0500
247.0500
247.0500
0
Weekend
Weekend
247.0500
247.0500
247.0500
247.0500
0
247.0500
247.0500
247.0500
247.0500
0
247.0500
247.0500
247.0500
247.0500
0
247.0500
247.0500
247.0500
247.0500
0
247.0500
247.0500
247.0500
247.0500
0
Weekend
Weekend
247.0500
247.0500
247.0500
247.0500
0
247.0500
247.0500
247.0500
247.0500
0
247.0500
247.0500
247.0500
247.0500
0
247.0500
247.0500
247.0500
247.0500
0
247.0500
247.0500
247.0500
247.0500
0
Weekend
Weekend
247.0500
247.0500
247.0500
247.0500
0
3 · 10-Q
After-hours · 16:17 ET
10-Q ↗
2 · 8-K
After-hours · 16:15 ET
8-K ↗
247.0500
247.0500
247.0500
247.0500
0
247.0500
247.0500
247.0500
247.0500
0
247.0500
247.0500
247.0500
247.0500
0
1 · 8-K
After-hours · 16:14 ET
8-K ↗
247.0500
247.0500
247.0500
247.0500
0
Weekend
Weekend
247.0500
247.0500
247.0500
247.0500
0
247.0500
247.0500
247.0500
247.0500
0
247.0500
247.0500
247.0500
247.0500
200
257.7500
257.7500
257.7500
257.7500
0
Announcement Events
Each title opens the filing on the SEC website. Registered users can summarise the filing and up to seven relevant exhibits linked within the same SEC submission.