Overview
Smart money at a glance
Filings to Oct 1, 2026Net selling: insiders sold $30.6M and bought $0 on the open market in 90 days (SEC Form 4). Congress: no trades disclosed in 180 days.
- Company insidersSEC Form 4, last 90 days
- -$30.6M netNet selling
- CongressSTOCK Act, last 180 days
- NoneNo trades disclosed
- Big fundsSEC 13F, quarter ended Jun 30, 2026
- 2 added, 0 cutMore adding
- Federal contractsUSAspending.gov, last 12 months
- No awardsNone on record
Key stats
Fundamentals Sep 30- Open
- $118.48
- 52-wk high
- $150.44
- High
- $118.48
- 52-wk low
- $61.96
- Low
- $105.61
- Prev close
- $118.18
- Mkt cap
- $5.58B
- P/E
- 164.1x
- Volume
- 968.4K
- Fwd P/E
- 69.9x
- P/S
- 14.0x
- P/B
- 10.1x
- Profit margin
- +8.3%
- Op margin
- +5.0%
- ROE
- +10.7%
What do analysts expect?
Analyst target and ratings are on paid plans
See the 12-month consensus target and the buy/hold/sell rating split.
Unlock the full resultsQuestions about BLLN filings
Are insiders buying or selling BillionToOne, Inc. Class A Common Stock (BLLN) stock?
Net selling: insiders sold $30.6M and bought $0 of BLLN stock on the open market in the 90 days to Oct 1, 2026, according to SEC Form 4 filings. $30.6M of the sales were made under pre-set Rule 10b5-1 trading plans. The largest was Atay, Oguzhan (Chairman and CEO), who sold $19.2M. The latest filing was on Oct 1, 2026.
Which members of Congress have traded BLLN recently?
None. No member of Congress disclosed a BLLN trade with a trade date in the last 180 days, according to House and Senate STOCK Act filings.
How current is this BLLN smart-money data?
This summary uses filings available on Oct 1, 2026. Insiders must report trades to the SEC within 2 business days, members of Congress have up to 45 days to disclose a trade, and funds file 13F holdings up to 45 days after each quarter ends, so the latest moves may not be public yet.
Smart money
8 funds hold a position and insiders have been net selling.
What funds are doing
Buys/Adds (3)
- MI

Millennium
$51.0M
bought
- OB

Oberweis
$35.9M
bought
- BC

Baron Capital
$44.6M
added
What insiders are doing
How top traders are positioned
No tracked top-trader positions in BLLN right now.
Live Hyperliquid positioning - not every stock is covered
Earnings
Earnings landed in line with what analysts expected.
Earnings per share
$0.15 expected
What the street expects next
Financials
What it sold, what it cost, what was left.
| USD | Sep 2025 | Dec 2025 | Mar 2026 | Jun 2026 |
|---|---|---|---|---|
| What came in | ||||
| Revenue | $83.5M | $96.1M | $108.4M | $109.4M |
| Cost of what it sold | $25.1M | $27.4M | $29.3M | $32.3M |
| Gross profit | $58.4M | $68.6M | $79.1M | $77.1M |
| What it spent | ||||
| Research and development | $13.0M | $14.3M | $14.7M | $17.3M |
| Sales and admin | $35.8M | $44.0M | $46.6M | $54.3M |
| Total operating expenses | $48.8M | $58.3M | $61.3M | $71.6M |
| What was left | ||||
| Operating profit | $9.6M | $10.3M | $17.8M | $5.5M |
| Interest on debt | $20.0K | $3.0K | $10.0K | $8.0K |
| Profit before tax | $5.6M | $6.3M | $18.5M | $7.5M |
| Tax | -$129.0K | $320.0K | $539.0K | -$536.0K |
| Net profit | $1.5M | $6.0M | $18.0M | $8.1M |
| EBITDA | $8.6M | $9.3M | $21.5M | $10.9M |
Technicals
Price structure
This stock is trending upward.
Trend
Constructive
60 / 100
RSI 14
20D volatility
52-week range
20D support
20D resistance
Returns
Price vs moving averages
Volume pace
News
What the news says
Coverage is bearish
Pre-IPO shares valued at $169,920 are proposed for sale by a BillionToOne (BLLN) officer.
NeutralSep 25David Tsao proposes a $416,625 share sale in BillionToOne (BLLN) after earlier sales.
NeutralSep 24BillionToOne SVP John ten Bosch sells $150,959 of class A common stock
Leans bearishSep 24Under a trading plan, BillionToOne (BLLN) lab operations SVP sold 1,416 shares; 23,635 remain.
Leans bearishSep 24BillionToOne (BLLN) legal chief sells 35K shares under preset trading plan
NeutralSep 22BillionToOne (NASDAQ: BLLN) officer plans new stock sale after several recent trades
Leans bearishSep 21BillionToOne (NASDAQ: BLLN) holder plans new stock sale after recent multimillion trades
NeutralSep 19BillionToOne (NASDAQ: BLLN) officer plans multimillion-dollar stock sale after recent $2M trade
NeutralSep 17
Macro
11 macro signals shaping BLLN right now
Unlock sector rotation, regime shifts, and macro event windows tied to this stock.
Unlock the full results