BLLNNasdaq

BillionToOne, Inc.

Alert me on BLLN

Insider buys, 6 months

Congress trades, 6 months

Signals, 6 months

Six months

After each filing

Oct 17 Sale Atay Oguzhan Insider

1 week

Result in1 trading day

1 month

Result in17 trading days

3 months

Result in59 trading days

6 months

Result in122 trading days

Oct 15 Sale Atay Oguzhan Insider

1 week

+2.9%S&P −1.0%

1 month

Result in15 trading days

3 months

Result in57 trading days

6 months

Result in120 trading days

Oct 8 Sale Tsao David Insider

1 week

+7.7%S&P −0.3%

1 month

Result in10 trading days

3 months

Result in52 trading days

6 months

Result in115 trading days

Oct 8 Sale ten Bosch John Roderick Insider

1 week

+7.7%S&P −0.3%

1 month

Result in10 trading days

3 months

Result in52 trading days

6 months

Result in115 trading days

Oct 1 Sale Atay Oguzhan Insider

1 week

−9.8%S&P +1.3%

1 month

Result in5 trading days

3 months

Result in47 trading days

6 months

Result in110 trading days

Show all 40

Sep 29 Sale Tsao David Insider

1 week

−15.4%S&P +1.9%

1 month

Result in3 trading days

3 months

Result in45 trading days

6 months

Result in108 trading days

Sep 29 Sale ten Bosch John Roderick Insider

1 week

−15.4%S&P +1.9%

1 month

Result in3 trading days

3 months

Result in45 trading days

6 months

Result in108 trading days

Sep 24 Sale ten Bosch John Roderick Insider

1 week

−15.3%S&P −0.4%

1 month

−13.7%S&P −0.9%

3 months

Result in42 trading days

6 months

Result in105 trading days

Sep 22 Sale Lynch Thomas P. Insider

1 week

+1.8%S&P −1.2%

1 month

−9.8%S&P 0.0%

3 months

Result in40 trading days

6 months

Result in103 trading days

Sep 17 Sale Atay Oguzhan Insider

1 week

+12.9%S&P +0.9%

1 month

−11.3%S&P +0.3%

3 months

Result in37 trading days

6 months

Result in100 trading days

Sep 12 Sale ten Bosch John Roderick Insider

1 week

+3.0%S&P +1.9%

1 month

−6.3%S&P +2.5%

3 months

Result in34 trading days

6 months

Result in97 trading days

Sep 12 Sale Tsao David Insider

1 week

+3.0%S&P +1.9%

1 month

−6.3%S&P +2.5%

3 months

Result in34 trading days

6 months

Result in97 trading days

Sep 11 Sale Lynch Thomas P. Insider

1 week

+7.2%S&P −0.1%

1 month

−5.8%S&P +2.1%

3 months

Result in33 trading days

6 months

Result in96 trading days

Aug 28 Sale Tsao David Insider

1 week

+6.6%S&P +0.1%

1 month

+26.7%S&P −0.4%

3 months

Result in24 trading days

6 months

Result in87 trading days

Aug 28 Sale ten Bosch John Roderick Insider

1 week

+6.6%S&P +0.1%

1 month

+26.7%S&P −0.4%

3 months

Result in24 trading days

6 months

Result in87 trading days

Aug 13 Sale ten Bosch John Roderick Insider

1 week

+1.3%S&P −2.0%

1 month

+7.2%S&P −2.2%

3 months

Result in13 trading days

6 months

Result in76 trading days

Aug 13 Sale Tsao David Insider

1 week

+1.3%S&P −2.0%

1 month

+7.2%S&P −2.2%

3 months

Result in13 trading days

6 months

Result in76 trading days

Aug 8 Sale Atay Oguzhan Insider

1 week

−4.8%S&P 0.0%

1 month

+0.5%S&P −1.4%

3 months

Result in10 trading days

6 months

Result in73 trading days

Aug 6 Sale Atay Oguzhan Insider

1 week

+2.6%S&P +1.2%

1 month

+8.4%S&P +0.2%

3 months

Result in8 trading days

6 months

Result in71 trading days

Aug 5 Sale Sakakibara Shan Riku Insider

1 week

−35.0%S&P +0.4%

1 month

−33.7%S&P +0.4%

3 months

Result in7 trading days

6 months

Result in70 trading days

Jul 21 Sale Johnson Nancy JoAnn Insider

1 week

+0.8%S&P −1.0%

1 month

−30.8%S&P +2.8%

3 months

−23.8%S&P +2.7%

6 months

Result in59 trading days

Jul 16 Sale ten Bosch John Roderick Insider

1 week

+0.6%S&P −1.7%

1 month

−27.2%S&P +3.4%

3 months

−23.6%S&P +2.8%

6 months

Result in56 trading days

Jul 16 Sale Tsao David Insider

1 week

+0.6%S&P −1.7%

1 month

−27.2%S&P +3.4%

3 months

−23.6%S&P +2.8%

6 months

Result in56 trading days

Jul 14 Sale Atay Oguzhan Insider

1 week

+6.1%S&P −0.5%

1 month

−22.0%S&P +2.7%

3 months

−25.5%S&P +3.8%

6 months

Result in54 trading days

Jul 14 Sale Sakakibara Shan Riku Insider

1 week

+6.1%S&P −0.5%

1 month

−22.0%S&P +2.7%

3 months

−25.5%S&P +3.8%

6 months

Result in54 trading days

Jul 9 Sale Atay Oguzhan Insider

1 week

+0.2%S&P −0.1%

1 month

−27.0%S&P +2.9%

3 months

−25.2%S&P +3.6%

6 months

Result in51 trading days

Jul 7 Sale Johnson Nancy JoAnn Insider

1 week

+5.8%S&P +0.6%

1 month

+27.1%S&P +3.0%

3 months

−7.6%S&P +3.9%

6 months

Result in49 trading days

Jul 2 Sale ten Bosch John Roderick Insider

1 week

+5.3%S&P +1.4%

1 month

+14.1%S&P +1.7%

3 months

−12.1%S&P +2.8%

6 months

Result in47 trading days

Jun 27 Sale Sakakibara Shan Riku Insider

1 week

−2.0%S&P +0.9%

1 month

+10.1%S&P −1.6%

3 months

+1.1%S&P +3.6%

6 months

Result in44 trading days

Jun 18 Sale ten Bosch John Roderick Insider

1 week

+12.4%S&P −2.4%

1 month

+26.0%S&P +0.2%

3 months

+0.7%S&P +2.3%

6 months

Result in38 trading days

Jun 18 Sale Tsao David Insider

1 week

+12.4%S&P −2.4%

1 month

+26.0%S&P +0.2%

3 months

+0.7%S&P +2.3%

6 months

Result in38 trading days

Jun 11 Sale Johnson Nancy JoAnn Insider

1 week

+5.5%S&P +1.5%

1 month

+25.3%S&P +2.2%

3 months

−0.9%S&P +3.9%

6 months

Result in33 trading days

Jun 11 Sale Sakakibara Shan Riku Insider

1 week

+5.5%S&P +1.5%

1 month

+25.3%S&P +2.2%

3 months

−0.9%S&P +3.9%

6 months

Result in33 trading days

Jun 11 Sale Atay Oguzhan Insider

1 week

+5.5%S&P +1.5%

1 month

+25.3%S&P +2.2%

3 months

−0.9%S&P +3.9%

6 months

Result in33 trading days

Nov 13, 2025 Buy ten Bosch John Roderick Insider

1 week

+6.8%S&P −2.9%

1 month

+7.9%S&P +1.3%

3 months

+4.1%S&P +1.9%

6 months

−3.8%S&P +10.5%

Nov 13, 2025 Buy Tsao David Insider

1 week

+6.8%S&P −2.9%

1 month

+7.9%S&P +1.3%

3 months

+4.1%S&P +1.9%

6 months

−3.8%S&P +10.5%

Nov 13, 2025 Buy Lynch Thomas P. Insider

1 week

+6.8%S&P −2.9%

1 month

+7.9%S&P +1.3%

3 months

+4.1%S&P +1.9%

6 months

−3.8%S&P +10.5%

Nov 13, 2025 Buy Johnson Nancy JoAnn Insider

1 week

+6.8%S&P −2.9%

1 month

+7.9%S&P +1.3%

3 months

+4.1%S&P +1.9%

6 months

−3.8%S&P +10.5%

Nov 13, 2025 Buy Rai Akshay Insider

1 week

+6.8%S&P −2.9%

1 month

+7.9%S&P +1.3%

3 months

+4.1%S&P +1.9%

6 months

−3.8%S&P +10.5%

Nov 11, 2025 Buy Bremner Thomas S Insider

1 week

−4.3%S&P −3.4%

1 month

−6.1%S&P +0.9%

3 months

−13.6%S&P 0.0%

6 months

−15.2%S&P +10.2%

Every purchase and sale on this ticker reported by a member of Congress or an insider, measured from the close of the first trading day after it became public to the close 1 week, 1 month, 3 months and 6 months later, each beside the S&P over the same days.

Filings for BLLN

121 held · newest 5121 held · newest 2

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See all 121 filings for BLLN

Aeon news and offers by email

New sources, new features and offers like our founding price. A few times a month at most. Stop any time.

Signal history

No signal for this ticker yet. A signal is written when insider buying here scores one dot or more.

Stakes

Dec 31, 2025 Schedule 13G

David Tsao: 6.9%, 3,035,767 shares

Dec 31, 2025 Schedule 13G

Oguzhan Atay: 7.3%, 3,206,861 shares

Nov 7, 2025 Schedule 13G

Krishna Kittu Kolluri ("Kolluri"): 10.6%, 4,359,505 shares

Nov 6, 2025 Schedule 13D

Hummingbird Ventures Management NV: 19.6%, 7,887,237 shares

Schedule 13D is filed within 5 business days of crossing 5 percent by an investor who may seek to influence the company. Schedule 13G is filed by a passive holder, and a large institution has up to 45 days after the quarter end.

Government contracts, last 12 months

Awards of $10M and up, from USAspending · context, not a signal

No contracts of $10M or more in the last 12 months.

Lobbying

Last four quarters

No lobbying reports on file.