$PACB
Pacific Biosciences of California, Inc.
XNAS
Why is PACB down today? It is at $1.18 (-9.62%), and our scanner flagged it 114 times on unusual volume this month. See the catalyst behind the move, real-time alerts the moment PACB spikes, and full due diligence on PACB — key stats, earnings, dilution and insider activity. Free.
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Our scanner flagged $PACB 114 times in the last 30 days. Create a free account to track $PACB, build a watchlist, and get instant unusual-volume alerts — plus 5 free premium days, no card needed.
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Key Stats
- Price
- $1.18
- Change today
- -9.62%
- Previous close
- $1.30
- 52-week range
- $1.09 – $2.73
- Market cap
- $404M
- Total held
- 1.4%
- Tradeable float
- 306.3M 99% of shares · after 1% insiders + institutional n/a
- Short interest
- 46.2M ▼ -3% vs prior · as of 2026-07-15
- Short % of float
- 15.1%
- Days to cover
- 10.0d
- Avg daily volume
- 7.2M
- Exchange
- XNAS
- 5m
- 1.5x
- 15m
- 1.6x
- 1h
- 2.4x
- 1D
- 0.4x
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Why is $PACB down today?
PACB is one of today's most active names, trading on unusually heavy volume (live price and day move above). Our scanner has fired 1 unusual-volume and momentum alert on PACB today, peaking at 5.5x its normal volume. Fresh from the SEC: PACIFIC BIOSCIENCES OF CALIFORNIA, INC.: PacBio Announces Second Quarter 2026 Financial Results. A material company disclosure like this is often the real catalyst behind a move of this size.
Likely catalystPacBio Announces Second Quarter 2026 Financial ResultsReported Commenced global commercial rollout of SPRQ-Nx, delivering whole genome sequencing at $345 USD list price per genome with enhanced methylation detection and DeepConsensus, an AI-powered consensus algorithm co-developed with Google, from the latest SEC filing. Read it →Analyst data via Nasdaq. Not investment advice.
Insiders
0 buys, 0 sells last 3 months (6/11 over 12 months)Show 12 recent transactionsMinimize 12 recent transactions
| Insider | Action | Shares | % of position | Owns after | Value | Date |
|---|---|---|---|---|---|---|
Gibson Christopher Director | Acquired (grant/award) | +57K 0.02% of company | added 100% | 111K | n/a | Apr 8, 26 |
Gibson James R Ii Officer | Sold (automatic/other) | -88K 0.03% of company | sold 6.6% | 1.25M | $121K at $1.37 | Apr 1, 26 |
Farmer Michele Officer | Sold (automatic/other) | -3K | sold 1.0% | 306K | $4K at $1.51 | Mar 3, 26 |
Van Oene Mark Officer | Sold (automatic/other) | -7K | sold 0.3% | 2.24M | $10K at $1.51 | Mar 3, 26 |
Henry Christian O Officer | Sold (automatic/other) | -12K | sold 0.3% | 3.58M | $19K at $1.51 | Mar 3, 26 |
Gibson Christopher Director | Acquired (grant/award) | +54K 0.02% of company | n/a | 54K | n/a | Mar 3, 26 |
Henry Christian O Officer | Acquired (grant/award) | +921K 0.3% of company | added 34% | 3.59M | n/a | Feb 27, 26 |
Van Oene Mark Officer | Acquired (grant/award) | +500K 0.2% of company | added 29% | 2.24M | n/a | Feb 27, 26 |
Gibson James R Ii Officer | Acquired (grant/award) | +334K 0.1% of company | added 33% | 1.33M | n/a | Feb 27, 26 |
Farmer Michele Officer | Acquired (grant/award) | +90K 0.03% of company | added 41% | 309K | n/a | Feb 27, 26 |
Farmer Michele Officer | Sold (automatic/other) | -15K | sold 6.4% | 219K | $24K at $1.63 | Feb 18, 26 |
Henry Christian O Officer | Sold (automatic/other) | -141K 0.05% of company | sold 5.0% | 2.67M | $230K at $1.63 | Feb 18, 26 |
Recent Form-4 filings via Nasdaq. Open-market buys are the signal worth watching. Grants and automatic (10b5-1) sells are routine. “% of position” is the share of that insider’s own holding the trade moved. Not investment advice.
$PACB Sentiment
NeutralBlend 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.
PACB stock FAQ
Why is $PACB down today?
PACB is one of today's most active names, trading on unusually heavy volume (live price and day move above). Our scanner has fired 1 unusual-volume and momentum alert on PACB today, peaking at 5.5x its normal volume. Fresh from the SEC: PACIFIC BIOSCIENCES OF CALIFORNIA, INC.: PacBio Announces Second Quarter 2026 Financial Results. A material company disclosure like this is often the real catalyst behind a move of this size.
What is the PACB stock price today?
PACB last traded at $1.18, down 9.62% 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 114 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 $404M.
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.