$BLLN
BillionToOne, Inc. Class A Common Stock
XNAS•Health Care•Services-Medical Laboratories
Why is BLLN down today? It is at $95.68 (-36.20%), and our scanner flagged it 48 times on unusual volume this month. See the catalyst behind the move, real-time alerts the moment BLLN spikes, and full due diligence on BLLN — key stats, earnings, dilution and insider activity. Free.
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Our scanner flagged $BLLN 48 times in the last 30 days. Create a free account to track $BLLN, build a watchlist, and get instant unusual-volume alerts — plus 5 free premium days, no card needed.
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Key Stats
- Price
- $95.68
- Change today
- -36.20%
- Previous close
- $149.97
- 52-week range
- $61.96 – $150.44
- Market cap
- $1.68B
- Shares outstanding
- 46.0M Live vendor count
- Institutional own.
- 29.34%
- Total held
- 69.6%
- Tradeable float
- 14.0M 30% of shares · after 40% insiders + 29% institutions
- Short interest
- 2.4M ▼ -1% vs prior · as of 2026-07-15
- Short % of float
- 17.2%
- Days to cover
- 3.6d
- Avg daily volume
- 452K
- Sector
- Health Care
- Industry
- Services-Medical Laboratories
- Exchange
- XNAS
- 5m
- 8.9x
- 15m
- 6.6x
- 1hthin
- 7.2x
- 1D
- 0.3x
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Why is $BLLN down today?
BLLN is one of today's most active names, trading on unusually heavy volume (live price and day move above). Our scanner has fired 4 unusual-volume and momentum alerts on BLLN today, peaking at 7.9x its normal volume. Fresh from the SEC: BillionToOne, Inc. filed a Quarterly report (10-Q). A material company disclosure like this is often the real catalyst behind a move of this size.
Likely catalystQuarterly report (10-Q), from the latest SEC filing. Read it →Analyst data via Nasdaq. Not investment advice.
Insiders
10 buys, 25 sells last 3 months (39/43 over 12 months)Show 12 recent transactionsMinimize 12 recent transactions
| Insider | Action | Shares | % of position | Owns after | Value | Date |
|---|---|---|---|---|---|---|
Sakakibara Shan Riku Officer | Sold (automatic/other) | -4K 0.04% of company | sold 2.0% | 200K | $561K at $140.21 | Jul 31, 26 |
Johnson Nancy Joann Officer | Sold (automatic/other) | -14K 0.1% of company | sold 67% | 7K | $1.8M at $126.98 | Jul 16, 26 |
Tsao David Officer | Sold (automatic/other) | -20K 0.2% of company | sold 95% | 1K | $2.5M at $122.84 | Jul 13, 26 |
Tsao David Officer | Other | 20K 0.2% of company | added 100% | 21K | $56K at $2.80 | Jul 13, 26 |
Ten Bosch John Roderick Officer | Sold (automatic/other) | -4K 0.04% of company | sold 13% | 29K | $533K at $125.46 | Jul 13, 26 |
Sakakibara Shan Riku Officer | Sold (automatic/other) | -8K 0.07% of company | sold 3.8% | 204K | $1.0M at $125.00 | Jul 9, 26 |
Sakakibara Shan Riku Officer | Other | 4K 0.04% of company | added 1.9% | 212K | $35K at $8.65 | Jul 9, 26 |
Atay Oguzhan Officer | Sold (automatic/other) | -13K 0.1% of company | n/a | n/a | $1.6M at $125.43 | Jul 9, 26 |
Atay Oguzhan Officer | Other | 13K 0.1% of company | n/a | 13K | $35K at $2.80 | Jul 9, 26 |
Atay Oguzhan Officer | Sold (automatic/other) | -26K 0.2% of company | n/a | n/a | $3.1M at $118.49 | Jul 6, 26 |
Atay Oguzhan Officer | Sold (automatic/other) | -13K 0.1% of company | sold 6.7% | 175K | $1.5M at $118.81 | Jul 6, 26 |
Atay Oguzhan Officer | Other | 26K 0.2% of company | n/a | 26K | $74K at $2.80 | Jul 6, 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.
$BLLN Sentiment
NeutralBlend of news sentiment, today’s move, and community votes. Not investment advice.
$BLLN Activity
News, unusual-volume alerts, AI-trader trades and community chatter — the whole story, newest first.
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BLLN stock FAQ
Why is $BLLN down today?
BLLN is one of today's most active names, trading on unusually heavy volume (live price and day move above). Our scanner has fired 4 unusual-volume and momentum alerts on BLLN today, peaking at 7.9x its normal volume. Fresh from the SEC: BillionToOne, Inc. filed a Quarterly report (10-Q). A material company disclosure like this is often the real catalyst behind a move of this size.
What is the BLLN stock price today?
BLLN last traded at $95.68, down 36.20% on the day. The price and chart above update live during market hours (4 AM to 8 PM ET).
Where can I see live BLLN alerts?
The BLLN 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 BLLN 48 times in the last 30 days.
What exchange is BLLN on?
BLLN (BillionToOne, Inc. Class A Common Stock) trades on XNAS, with a market cap of about $1.68B in the SERVICES-MEDICAL LABORATORIES sector.
Is BLLN 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 BLLN for yourself. This is not investment advice.
Live data from TheDesperateTrader scanner. Not investment advice.