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Public ownership evidence

BillionToOne, Inc. Class A Common Stock (BLLN) Ownership Disclosures

Read BLLN insider transactions, institutional 13F filings and Congressional disclosures with report dates, public availability and original receipts.

As of 2026-11-07T14:03:26.246Z

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2026-11-052026-11-02ten Bosch John RoderickS1,417Not reported

First displayed source row from Recent Form 4 activity. The full bounded history and coverage notes remain below.

The displayed observation date is 2026-11-02 and its public availability date is 2026-11-05. Subtracting those calendar dates gives 3 days of disclosure lag. Historical public research can use the record from the availability date, rather than backdating knowledge to the observation date. The calendar-day difference does not assert an intraday publication time.

This row is code S: a sale. A purchase-following rule excludes this sale even if the reported dollar amount is large.

Open the linked original receipts to verify the row, then inspect a second record before drawing a pattern. This public filing observation supplies source evidence, not a completed copy-trading return.

SEC 0002087126-26-000020 ↗SEC 0002087126-26-000020 ↗SEC 0002088549-26-000019 ↗

Recent Form 4 activity

Inspect all 50 displayed rows: Recent Form 4 activity

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2026-11-052026-11-02ten Bosch John RoderickS1,417Not reported
2026-11-052026-11-02ten Bosch John RoderickS1,417Not reported
2026-11-052026-11-02Atay OguzhanS974Not reported
2026-11-052026-11-02Atay OguzhanS536Not reported
2026-11-052026-11-02Atay OguzhanS1,117Not reported
2026-11-052026-11-02Atay OguzhanS3,803Not reported
2026-11-052026-11-02Atay OguzhanS5,720Not reported
2026-11-052026-11-02Atay OguzhanS4,009Not reported
2026-11-052026-11-02Atay OguzhanS1,482Not reported
2026-11-052026-11-02Atay OguzhanS2,667Not reported
2026-11-052026-11-02Atay OguzhanS2,667Not reported
2026-11-052026-11-02Atay OguzhanS200Not reported
2026-11-052026-11-02Atay OguzhanS411Not reported
2026-11-052026-11-02Atay OguzhanS2,223Not reported
2026-11-052026-11-02Atay OguzhanS2,451Not reported
2026-11-052026-11-02Atay OguzhanS2,075Not reported
2026-11-052026-11-02Tsao DavidS100Not reported
2026-11-052026-11-02Tsao DavidS300Not reported
2026-11-052026-11-02Tsao DavidS1,130Not reported
2026-11-052026-11-02Tsao DavidS1,992Not reported
2026-11-052026-11-02Tsao DavidS3,241Not reported
2026-11-052026-11-02Tsao DavidS2,320Not reported
2026-11-052026-11-02Tsao DavidS917Not reported
2026-11-052026-11-02Tsao DavidS23Not reported
2026-11-052026-11-02Tsao DavidS208Not reported
2026-11-052026-11-02Tsao DavidS633Not reported
2026-11-052026-11-02Tsao DavidS2,389Not reported
2026-11-052026-11-02Tsao DavidS3,234Not reported
2026-11-052026-11-02Tsao DavidS2,450Not reported
2026-11-052026-11-02Tsao DavidS1,063Not reported
2026-10-302026-10-28Atay OguzhanS2,667Not reported
2026-10-302026-10-28Atay OguzhanS8,333Not reported
2026-10-162026-10-15Atay OguzhanS133Not reported
2026-10-162026-10-15Atay OguzhanS980Not reported
2026-10-162026-10-15Atay OguzhanS1,276Not reported
2026-10-162026-10-15Atay OguzhanS1,861Not reported
2026-10-162026-10-15Atay OguzhanS900Not reported
2026-10-162026-10-14Atay OguzhanS100Not reported
2026-10-162026-10-14Atay OguzhanS3,083Not reported
2026-10-162026-10-14Atay OguzhanS2,667Not reported
2026-10-142026-10-12Atay OguzhanS2,667Not reported
2026-10-142026-10-12Atay OguzhanS1,521Not reported
2026-10-142026-10-12Atay OguzhanS3,869Not reported
2026-10-142026-10-12Atay OguzhanS6,763Not reported
2026-10-142026-10-12Atay OguzhanS2,553Not reported
2026-10-142026-10-12Atay OguzhanS1,961Not reported
2026-10-072026-10-05ten Bosch John RoderickS1,417Not reported
2026-10-072026-10-05ten Bosch John RoderickS1,417Not reported
2026-10-072026-10-05Tsao DavidS400Not reported
2026-10-072026-10-05Tsao DavidS555Not reported

90-day public availability window, up to 50 records.

Recent institutional filing receipts

Inspect all 50 displayed rows: Recent institutional filing receipts

These are raw ticker-matched positions in recent 13F receipts, including amendments. They are not deduplicated current ownership totals. Open the manager profile to inspect its effective filing book.

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Fox Hill Wealth Management2026-06-302026-08-2043,724$5,245,998None
Ensign Peak Advisors, Inc2026-03-312026-08-1951,501$4,065,489None
Forum Finance Group S.A.2026-06-302026-08-15300$29,000None
Civilization Ventures Management, LLC2026-06-302026-08-1588$8,681None
Genesis Financial Group, LLC2026-06-302026-08-152,000$239,960None
SummitTX Capital, L.P.2026-06-302026-08-154,415$529,712None
SEI INVESTMENTS CO2026-06-302026-08-159,589$1,150,488None
Quarry LP2026-06-302026-08-151$120None
T. Rowe Price Investment Management, Inc.2026-06-302026-08-1592,957$11,153,000None
Caerus Investment Advisors, LLC2026-06-302026-08-1511,453$1,374,124None
XTX Topco Ltd2026-06-302026-08-1518,152$2,177,877None
CHARLES SCHWAB INVESTMENT MANAGEMENT INC2026-06-302026-08-1526,612$3,192,908None
Sixth Street Partners Management Company, L.P.2026-06-302026-08-1526,612$3,192,908None
ExodusPoint Capital Management, LP2026-06-302026-08-151,838$220,523None
OSAIC HOLDINGS, INC.2026-06-302026-08-15110$13,198None
OSAIC HOLDINGS, INC.2026-06-302026-08-1513,426$1,610,617None
Squarepoint Ops LLC2026-06-302026-08-158,773$1,052,585None
Trexquant Investment LP2026-06-302026-08-1528,105$3,372,038None
JANE STREET GROUP, LLC2026-06-302026-08-159,100$1,091,818Put
JANE STREET GROUP, LLC2026-06-302026-08-1523,000$2,759,540Call
VOLORIDGE INVESTMENT MANAGEMENT, LLC2026-06-302026-08-15117,063$14,045,219None
HRT FINANCIAL LP2026-06-302026-08-1580,709$9,683,000None
Ensign Peak Advisors, Inc2026-06-302026-08-1551,427$6,170,211None
Verition Fund Management LLC2026-06-302026-08-1557,000$6,838,860None
Verition Fund Management LLC2026-06-302026-08-1557,000$6,838,860None
Jasper Ridge Partners, L.P.2026-06-302026-08-155,127$615,137None
SUSQUEHANNA INTERNATIONAL GROUP, LLP2026-06-302026-08-1527,100$3,251,458Call
SUSQUEHANNA INTERNATIONAL GROUP, LLP2026-06-302026-08-1564,500$7,738,710Put
SUSQUEHANNA INTERNATIONAL GROUP, LLP2026-06-302026-08-1539,518$4,741,370None
SUSQUEHANNA INTERNATIONAL GROUP, LLP2026-06-302026-08-1515,080$1,809,298None
SEVEN GRAND MANAGERS, LLC2026-06-302026-08-1525,000$2,999,500None
Blue Water Life Science Advisors, LP2026-06-302026-08-1570,000$8,398,600None
Gotham Asset Management, LLC2026-06-302026-08-151,782$213,804None
Weiss Asset Management LP2026-06-302026-08-1543,057$5,165,979None
MILLENNIUM MANAGEMENT LLC2026-06-302026-08-15425,032$50,995,339None
Scientech Research LLC2026-06-302026-08-1514,490$1,738,510None
OBERWEIS ASSET MANAGEMENT INC/2026-06-302026-08-15299,030$35,877,619None
FRED ALGER MANAGEMENT, LLC2026-06-302026-08-15114,123$13,692,478None
JONES FINANCIAL COMPANIES LLLP2026-06-302026-08-15816$96,427None
AMERIPRISE FINANCIAL INC2026-06-302026-08-1515,732$1,917,520None
AMERIPRISE FINANCIAL INC2026-06-302026-08-157,279$873,334None
AMERIPRISE FINANCIAL INC2026-06-302026-08-15229$27,475None
AMERIPRISE FINANCIAL INC2026-06-302026-08-15297,372$35,679,093None
Freestone Grove Partners LP2026-06-302026-08-151,533$183,929None
Cerity Partners LLC2026-06-302026-08-153,000$359,940None
Cresset Asset Management, LLC2026-06-302026-08-159,129$1,095,297None
MANUFACTURERS LIFE INSURANCE COMPANY, THE2026-06-302026-08-1541,697$5,002,806None
ROYAL BANK OF CANADA2026-06-302026-08-15455$55,000None
ROYAL BANK OF CANADA2026-06-302026-08-1524,507$2,940,000None
NEXT CENTURY GROWTH INVESTORS LLC2026-06-302026-08-15364,467$43,728,750None

90-day public filing window, up to 50 source positions.

Fox Hill Wealth Management ↗Ensign Peak Advisors, Inc ↗Forum Finance Group S.A. ↗Civilization Ventures Management, LLC ↗Genesis Financial Group, LLC ↗SummitTX Capital, L.P. ↗SEI INVESTMENTS CO ↗Quarry LP ↗T. Rowe Price Investment Management, Inc. ↗Caerus Investment Advisors, LLC ↗

Recent Congressional disclosures

No matching Congressional transactions were returned in this source preview.

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Bounded public source preview, up to 25 disclosed events.

How to read the disclosure dates

The tables report different things: insider transactions, institutional positions and Congressional transaction ranges. Read each table with its source dates and units. They cannot be added into a combined ownership percentage.

  1. Company insiders

    SEC Form 4 purchases, sales and awards report transactions and their public filing availability.

  2. Institutional managers

    13F reports disclose delayed quarter-end positions. They are not a record of trades between quarters.

  3. Congressional filers

    Periodic transaction reports disclose transaction dates and amount brackets. Public filing dates determine what researchers could know.

Institutional source directory ↗Congressional source directory ↗

Read the transaction codes

Awards use transaction code A, purchases P and sales S. An acquisition from an award is not the same as an open-market purchase. Joint filers may share a transaction. Use original receipts and availability dates to interpret the events.