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$BIO

Bio-Rad Laboratories, Inc.Class A

XNYS•Technology•Laboratory Analytical Instruments

$342.01-1.68%−$5.85Prev $347.86LIVE Full chart Live alerts
No recent price bars, the chart lights up when BIO starts printing.

Why is BIO down today? It is at $342.01 (-1.68%), and our scanner flagged it 12 times on unusual volume this month. See the catalyst behind the move, real-time alerts the moment BIO spikes, and full due diligence on BIO — key stats, earnings, dilution and insider activity. Free.

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Our scanner flagged $BIO 12 times in the last 30 days. Create a free account to track $BIO, build a watchlist, and get instant unusual-volume alerts — plus 5 free premium days, no card needed.

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Key Stats

Price & performance
Price
$342.01
Change today
-1.68%
Previous close
$347.86
52-week range
$236.73 – $352.63
Valuation & dividend
Market cap
$9.62B
Ownership & volume
Shares outstanding
27.7M
SEC · as of 2010-06-30 · 5881d STALE ↗
Insider ownership
<1%
DEF 14A · 2026-03-25 ↗
Institutional own.
98.69%
Total held
99.1%
Tradeable float
263K
1% of shares · after <1% insiders + 99% institutions
Short interest
1.6M
▲ +3% vs prior · as of 2026-07-15
Days to cover
6.0d
Avg daily volume
280K
Classification
Sector
Technology
Industry
Laboratory Analytical Instruments
Exchange
XNYS
Relative volumevs this time of day
5m
2.3x
15m
2.2x
1h
1.0x
1D
0.1x

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Why is $BIO down today?

Here is the latest on BIO from our scanner (live price and day move above). We have not detected an unusual-volume catalyst for BIO today, so it is trading in line with its recent range. The moment our scanner flags unusual activity, the reason will appear here.

Likely catalystQuarterly report (10-Q), from the latest SEC filing. Read it →
Why is $BIO moving? →▶ Replay the moveAuto-generated from live scanner data. Not investment advice.
Trading profile⚡ Ultra-low float · 263K shShortableEasy to borrowNo SSRBorrow via Alpaca · SSR from Reg SHO 201

$BIO Sentiment

Bullish
Bearish74Bullish
📰 News: 6 bull · 0 bearToday: -1.7%👥 Community: 0 bull · 0 bear

Blend of news sentiment, today’s move, and community votes. Not investment advice.

$BIO Activity

News, unusual-volume alerts, AI-trader trades and community chatter — the whole story, newest first.

Alert· 18h ago +2.9% vs EMA
BIO 200EMA (5m) Trending · 77 bars · L3 · +2.94% above EMA · slope +0.52%
at $347.94
Alert· 18h ago +1.4% vs EMA
BIO 200EMA (1m) Trending · 102 bars · L4 · +1.37% above EMA · slope +0.23%
at $347.94
Alert· 18h ago +1.4% vs EMA
BIO 200EMA (1m) Trending · 102 bars · L4 · +1.37% above EMA · slope +0.23%
at $347.94
Alert· 20h ago +1.4% vs EMA
$BIO near 200 EMA: +1.39% from 200 EMA at 2:06 PM ET
at $345.99
Alert· 20h ago +1.02%
$BIO moved +1.02% in 1 min (Level 1) at 2:06 PM ET
at $345.99
Alert· 21h ago +0.4% vs EMA
$BIO near 200 EMA: +0.41% from 200 EMA at 1:45 PM ET
at $342.40
Alert· 21h ago 40.9× RVOL
BIO hit 40.878x RVOL at 1:45 PM ET
at $342.40
Alert· 23h ago +1.1% vs EMA
$BIO near 200 EMA: +1.08% from 200 EMA at 11:39 AM ET
at $342.80
Alert· 23h ago 2.1× RVOL
BIO hit 2.096x RVOL at 11:39 AM ET
at $342.80
Alert· 23h ago 2.6× RVOL
BIO hit 2.632x RVOL at 11:10 AM ET
at $341.93
Alert· 1d ago +1.13%
$BIO moved +1.13% in 1 min (Level 1) at 9:43 AM ET
at $348.00
News· SEC EDGAR· 1d ago
BIO-RAD LABORATORIES, INC. filed a Quarterly report (10-Q)
News· SEC EDGAR· 1d ago
BIO-RAD LABORATORIES, INC.: Bio-Rad Reports Second-Quarter 2026 Financial Results
Alert· 7d ago 9.5× RVOL
BIO hit 9.544x RVOL at 11:20 AM ET
at $330.15
Alert· 8d ago +2.5% vs EMA
BIO 200EMA (5m) Trending · 72 bars · L3 · +2.47% above EMA · slope +0.43%
at $330.32
Alert· 8d ago +0.9% vs EMA
BIO 200EMA (1m) Trending · 196 bars · L4 · +0.94% above EMA · slope +0.15%
at $330.32
Alert· 8d ago +0.9% vs EMA
BIO 200EMA (1m) Trending · 196 bars · L4 · +0.94% above EMA · slope +0.15%
at $330.32
Alert· 8d ago 2.0× RVOL
BIO hit 2.000x RVOL at 3:40 PM ET
at $330.67
Alert· 8d ago 7.6× RVOL
BIO hit 7.578x RVOL at 3:07 PM ET
at $327.78
Alert· 8d ago 4.1× RVOL
BIO hit 4.085x RVOL at 12:42 PM ET
at $329.73
Alert· 12d ago +0.9% vs EMA
BIO 200EMA (5m) Trending · 77 bars · L3 · +0.90% above EMA · slope +0.19%
at $314.89
Alert· 12d ago 3.1× RVOL
BIO hit 3.072x RVOL at 10:49 AM ET
at $315.16
News· GlobeNewswire Inc.· 13d ago Bullish
Blood Transfusion Diagnostics Market Size to Hit USD 8.67 Billion by 2035 as Automated Testing and AI-Driven Blood Safety Solutions Accelerate Growth | SNS Insider
Alert· 15d ago +0.4% vs EMA
BIO 50EMA (1m) Trending · 53 bars · L3 · +0.43% above EMA · slope +0.34%
at $301.12
Alert· 15d ago 2.0× RVOL
BIO hit 2.000x RVOL at 12:24 PM ET
at $299.34
Alert· 16d ago +0.9% vs EMA
BIO 200EMA (1m) Trending · 96 bars · L3 · +0.88% above EMA · slope +0.19%
at $307.04
Alert· 16d ago 9.7× RVOL
BIO hit 9.673x RVOL at 11:05 AM ET
at $303.70
News· GlobeNewswire Inc.· 34d ago Bullish
Molecular Biology Enzymes, Reagents and Kits Market Size Worth USD 70.85 Billion by 2035 | SNS Insider
News· GlobeNewswire Inc.· 38d ago Bullish
Oxidative Stress Assay Market Size to Reach USD 3.25 Billion by 2035 | SNS Insider
News· GlobeNewswire Inc.· 42d ago Bullish
Global Laboratory Equipment Services Market Size/Share Worth USD 62.83 Billion by 2035 at a 8% CAGR: Healthcare Foresights (Analysis, Outlook, Leaders, Report, Trends, Forecast, Segmentation, Growth Rate, Value, SWOT Analysis)
News· Benzinga· 79d ago Bullish
Why Elliott Sees Hidden Billions Inside Bio-Rad Laboratories
News· Investing.com· 79d ago Bullish
Nvidia Earnings Could Decide Whether the AI Trade Still Holds

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BIO stock FAQ

Why is $BIO down today?

Here is the latest on BIO from our scanner (live price and day move above). We have not detected an unusual-volume catalyst for BIO today, so it is trading in line with its recent range. The moment our scanner flags unusual activity, the reason will appear here.

What is the BIO stock price today?

BIO last traded at $342.01, down 1.68% on the day. The price and chart above update live during market hours (4 AM to 8 PM ET).

Where can I see live BIO alerts?

The BIO Live Alerts panel on this page streams real-time unusual volume (RVOL), momentum, halt and 200-EMA alerts from our scanner the moment they fire. Our scanner has flagged BIO 12 times in the last 30 days.

What exchange is BIO on?

BIO (Bio-Rad Laboratories, Inc.Class A) trades on XNYS, with a market cap of about $9.62B in the LABORATORY ANALYTICAL INSTRUMENTS sector.

Is BIO good for day trading?

That depends on your strategy and risk. Day traders look for volume, volatility and a clear trend. Use the live chart, RVOL alerts and 200-EMA context on this page to judge BIO for yourself. This is not investment advice.

Live data from TheDesperateTrader scanner. Not investment advice.