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$PACB

Pacific Biosciences of California, Inc.

XNAS

$1.43-3.82%−$0.0569Prev $1.49LIVE Full chart Live alerts
No recent price bars, the chart lights up when PACB starts printing.

As of the latest tick, PACB is trading at $1.43, down 3.82% versus the previous close of $1.49. Our scanner has flagged PACB 20 times on unusual volume in the last 30 days.

Key Stats

Price & performance
Price
$1.43
Change today
-3.82%
Previous close
$1.49
52-week range
$1.09 – $2.73
Valuation & dividend
Market cap
$463M
Ownership & volume
Shares outstanding
310.6M
SEC · as of 2026-04-30 ↗
Insider ownership
1.4%
DEF 14A · 2026-04-23 ↗
Tradeable float
306.3M
99% of shares · after 1% insiders + institutional n/a
Short interest
47.5M
▼ -22% vs prior · as of 2026-06-30
Short % of float
15.5%
Days to cover
6.5d
Avg daily volume
7.2M
Next earnings
Aug 5 · in 17d (after close)
Classification
Exchange
XNAS

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Why is $PACB down today?

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

Likely catalystExecutive / Board Change, from the latest SEC filing. Read it →
Why is $PACB moving? →▶ Replay the moveAuto-generated from live scanner data. Not investment advice.
Trading profileShortableEasy to borrowNo SSRBorrow via Alpaca · SSR from Reg SHO 201

$PACB Sentiment

Bullish
Bearish68Bullish
📰 News: 4 bull · 0 bearToday: -3.8%👥 Community: 0 bull · 0 bear

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

$PACB Activity

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

Alert· 1d ago 6.1× RVOL
PACB hit 6.122x RVOL at 3:13 PM ET
at $1.44
Alert· 1d ago -0.1% vs EMA
$PACB near 200 EMA: -0.14% from 200 EMA at 2:22 PM ET
at $1.46
Alert· 1d ago 71.1× RVOL
PACB hit 71.133x RVOL at 2:22 PM ET
at $1.46
Alert· 1d ago +0.5% vs EMA
$PACB near 200 EMA: +0.49% from 200 EMA at 1:45 PM ET
at $1.47
Alert· 1d ago 8.2× RVOL
PACB hit 8.243x RVOL at 1:45 PM ET
at $1.47
Alert· 1d ago -1.04%
$PACB moved -1.04% in 1 min (Level 1) at 12:40 PM ET
at $1.44
Alert· 1d ago -0.7% vs EMA
$PACB near 200 EMA: -0.65% from 200 EMA at 11:58 AM ET
at $1.45
Alert· 1d ago 8.5× RVOL
PACB hit 8.525x RVOL at 11:58 AM ET
at $1.45
Alert· 1d ago -2.1% vs EMA
$PACB near 200 EMA: -2.10% from 200 EMA at 11:26 AM ET
at $1.44
Alert· 1d ago 18.2× RVOL
PACB hit 18.209x RVOL at 11:26 AM ET
at $1.44
Alert· 2d ago -0.5% vs EMA
$PACB near 200 EMA: -0.54% from 200 EMA at 1:53 PM ET
at $1.49
Alert· 2d ago 10.0× RVOL
PACB hit 9.987x RVOL at 1:53 PM ET
at $1.49
Alert· 2d ago -1.3% vs EMA
$PACB near 200 EMA: -1.26% from 200 EMA at 12:48 PM ET
at $1.48
Alert· 2d ago 7.3× RVOL
PACB hit 7.274x RVOL at 12:48 PM ET
at $1.48
Alert· 2d ago -1.4% vs EMA
$PACB near 200 EMA: -1.43% from 200 EMA at 12:09 PM ET
at $1.49
Alert· 2d ago +1.02%
$PACB moved +1.02% in 1 min (Level 1) at 12:09 PM ET
at $1.49
Alert· 2d ago 22.5× RVOL
PACB hit 22.533x RVOL at 12:09 PM ET
at $1.48
Alert· 2d ago 3.6× RVOL
PACB hit 3.587x RVOL at 12:08 PM ET
at $1.48
Alert· 2d ago 2.6× RVOL
PACB hit 2.631x RVOL at 10:20 AM ET
at $1.52
Alert· 3d ago +0.1% vs EMA
PACB 200EMA (1m) Trending · 100 bars · L4 · +0.14% above EMA · slope +0.25%
at $1.52
Alert· 3d ago +0.5% vs EMA
PACB 200EMA (1m) Trending · 99 bars · L3 · +0.48% above EMA · slope +0.26%
at $1.53
Alert· 3d ago 2.0× RVOL
PACB hit 2.000x RVOL at 2:13 PM ET
at $1.52
Alert· 3d ago +1.2% vs EMA
$PACB near 200 EMA: +1.17% from 200 EMA at 1:39 PM ET
at $1.52
Alert· 3d ago 30.5× RVOL
PACB hit 30.466x RVOL at 1:39 PM ET
at $1.52
Alert· 3d ago 8.5× RVOL
PACB hit 8.543x RVOL at 10:50 AM ET
at $1.50
News· SEC EDGAR· 9d ago
PACIFIC BIOSCIENCES OF CALIFORNIA, INC. filed an 8-K: Executive / Board Change
News· SEC EDGAR· 44d ago
PACIFIC BIOSCIENCES OF CALIFORNIA, INC. filed an 8-K: Executive / Board Change, Shareholder Vote
News· SEC EDGAR· 71d ago
PACIFIC BIOSCIENCES OF CALIFORNIA, INC. filed a Quarterly report (10-Q)
News· SEC EDGAR· 72d ago
PACIFIC BIOSCIENCES OF CALIFORNIA, INC. filed an 8-K: Results of Operations
News· GlobeNewswire Inc.· 80d ago Bullish
Global Metagenomics Sequencing Market to Register Stunning Growth at a CAGR of ~13% by 2034 | DelveInsight
News· GlobeNewswire Inc.· 85d ago Bullish
Omics-Based Clinical Trials Research Report 2026: $47.78 Bn Market Opportunities, Trends, Competitive Landscape, Strategies, and Forecasts, 2020-2025, 2025-2030F, 2035F
News· GlobeNewswire Inc.· 102d ago Bullish
Global DNA Read, Write and Edit Market to Surge to $67.7 Billion by 2030, Driven by CRISPR Advances, Genomic Diagnostics and Expanding Clinical Applications
News· GlobeNewswire Inc.· 261d ago Bullish
Genomics Data Analysis Market Size to Surpass USD 28.74 Bn by 2034

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PACB stock FAQ

Why is $PACB down today?

Here is the latest on PACB from our scanner (live price and day move above). We have not detected an unusual-volume catalyst for PACB 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 PACB stock price today?

PACB last traded at $1.43, down 3.82% on the day. The price and chart above update live during market hours (4 AM to 8 PM ET).

Where can I see live PACB alerts?

The PACB 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 PACB 20 times in the last 30 days.

What exchange is PACB on?

PACB (Pacific Biosciences of California, Inc.) trades on XNAS, with a market cap of about $463M.

Is PACB 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 PACB for yourself. This is not investment advice.

Live data from TheDesperateTrader scanner. Not investment advice.