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 2026-10-10T12:08:28.848Z

Separate the three disclosure sources

Step 1 of 3

Recent Form 4 activity

BillionToOne, Inc. Class A Common Stock: source evidence dated 2026-10-10T12:08:28.848Z.

Available
2026-10-07
Trade date
2026-10-05
Reporting owners
ten Bosch John Roderick
Code
S
Shares
1,417
Reported value
Not reported
What you should see

The displayed owner or issuer and source fields identify the receipt to verify; keep reporting and availability dates separate.

Step 2 of 3

Is this an insider transaction, 13F holding, or Congressional event?

Each source has different dates and units. Raw ticker-matched receipts, including amendments, are not deduplicated current ownership totals.

SEC 0002087126-26-000018
What you should see

Follow the source receipt or manager/member profile. Avoid combining transaction value and 13F position value into an ownership percentage.

Step 3 of 3

Read BLLN fundamentals

Follow the source receipt or manager/member profile. Avoid combining transaction value and 13F position value into an ownership percentage.

Read BLLN fundamentals
What you should see

Keep reporting dates and units beside the answer, and inspect its original citations.

Recent Form 4 activity

See the complete recent form 4 activity

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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
2026-10-072026-10-05Tsao DavidS20Not reported
2026-10-072026-10-05Tsao DavidS2,921Not reported
2026-10-072026-10-05Tsao DavidS4,284Not reported
2026-10-072026-10-05Tsao DavidS1,909Not reported
2026-10-072026-10-05Tsao DavidS866Not reported
2026-10-072026-10-05Tsao DavidS100Not reported
2026-10-072026-10-05Tsao DavidS1,829Not reported
2026-10-072026-10-05Tsao DavidS4,916Not reported
2026-10-072026-10-05Tsao DavidS2,200Not reported
2026-10-012026-09-28Atay OguzhanS2,666Not reported
2026-10-012026-09-28Atay OguzhanS8,333Not reported
2026-09-282026-09-24Tsao DavidS3,333Not reported
2026-09-282026-09-24ten Bosch John RoderickS1,416Not reported
2026-09-232026-09-21ten Bosch John RoderickS1,416Not reported
2026-09-212026-09-17Lynch Thomas P.S5,840Not reported
2026-09-212026-09-17Lynch Thomas P.S2,920Not reported
2026-09-212026-09-17Lynch Thomas P.S6,968Not reported
2026-09-212026-09-17Lynch Thomas P.S19,384Not reported
2026-09-162026-09-14Atay OguzhanS2,010Not reported
2026-09-162026-09-14Atay OguzhanS1,500Not reported
2026-09-162026-09-14Atay OguzhanS1,680Not reported
2026-09-162026-09-14Atay OguzhanS7,214Not reported
2026-09-162026-09-14Atay OguzhanS2,531Not reported
2026-09-162026-09-14Atay OguzhanS2,456Not reported
2026-09-162026-09-14Atay OguzhanS4,465Not reported
2026-09-162026-09-14Atay OguzhanS2,666Not reported
2026-09-162026-09-14Atay OguzhanS2,666Not reported
2026-09-162026-09-14Atay OguzhanS3,143Not reported
2026-09-112026-09-09ten Bosch John RoderickS1,416Not reported
2026-09-112026-09-09Tsao DavidS10,000Not reported
2026-09-112026-09-09Tsao DavidS10,000Not reported
2026-09-102026-09-08Lynch Thomas P.S614Not reported
2026-09-102026-09-08Lynch Thomas P.S775Not reported
2026-09-102026-09-08Lynch Thomas P.S8,285Not reported
2026-09-102026-09-08Lynch Thomas P.S1,944Not reported
2026-09-102026-09-08Lynch Thomas P.S38Not reported
2026-09-102026-09-08Lynch Thomas P.S232Not reported
2026-09-102026-09-08Lynch Thomas P.S2,518Not reported
2026-09-102026-09-08Lynch Thomas P.S576Not reported
2026-09-102026-09-08Lynch Thomas P.S147Not reported
2026-09-102026-09-08Lynch Thomas P.S1,131Not reported
2026-09-102026-09-08Lynch Thomas P.S385Not reported
2026-09-102026-09-08Lynch Thomas P.S358Not reported
2026-09-102026-09-08Lynch Thomas P.S2,997Not reported
2026-08-282026-08-25Tsao DavidS10,000Not reported
2026-08-282026-08-25ten Bosch John RoderickS1,417Not reported

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

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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No records are available for this view.

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.

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