Institutional HoldersBeta

Who holds a company, from every 13F filed for the quarter, one row per filer exactly as filed, against the latest share count the company reported.

BillionToOne, Inc.

CIK 0002070849BLLN· quarter ending 2026-06-30

Shares outstanding

47,187,038

as of 2026-08-03 · 10-Q cover page, filed 2026-08-05

Held by 13F filers

15,278,480

35.8% of Common Class A

Holders

155

+65 vs 2026-03-31 · 76 new, 11 exited

Value

$1.8B

shares +34.7% vs prior quarter

Share classes (cover page of the 10-Q filed 2026-08-05, as of 2026-08-03)

Class	Listed	Shares outstanding	Held by 13F filers	% of class	Holders	CUSIP
Common Class A	BLLN · NASDAQ	42,644,388	15,278,480	35.8%	155	090168105
Common Class B	not listed	4,542,650	—	—

Each class is compared with its own share count; classes are not added together. A class that is not exchange-listed cannot be held by 13F filers.

Securities (CUSIPs held in 13F this quarter)

tick to combine

Count	CUSIP	Class (as filers write it)	Holders	Shares held	Class shares	% of class	Value	Options	Mapped via
	090168105	CL A	155	15,278,480	42,644,388	35.8%	$1.8B	3 call / 3 put	13DG	holders →

Totals combine the ticked CUSIPs and update as you tick: common-stock classes by default; preferreds, notes, warrants and depositary shares are listed but not counted. "holders →" shows a single CUSIP on its own. Bonds are held as a principal amount, not shares. Options positions are never counted as holdings.

Top holders (155 of 155 · 090168105)

change vs 2026-03-31

#	Filer	Shares	% of class	Value	Change
1	ADAMS STREET PARTNERS LLC	1,711,430	4.01%	$205.3M	—
2	PRICE T ROWE ASSOCIATES INC /MD/	1,010,322	2.37%	$121.2M	+272,804 (+37.0%)
3	BAILLIE GIFFORD & CO	901,420	2.11%	$108.2M	-358,573 (-28.5%)
4	VANGUARD PORTFOLIO MANAGEMENT LLC	840,970	1.97%	$100.9M	+689,757 (+456.1%)
5	Invesco Ltd.	835,614	1.96%	$100.3M	+429,102 (+105.6%)
6	VANGUARD CAPITAL MANAGEMENT LLC	799,468	1.87%	$95.9M	+617,005 (+338.2%)
7	NEUBERGER BERMAN GROUP LLC	764,215	1.79%	$91.7M	+55,001 (+7.8%)
8	BAMCO INC /NY/	742,093	1.74%	$89.0M	+608 (+0.1%)
9	WASATCH ADVISORS LP	518,084	1.21%	$62.2M	+148,446 (+40.2%)
10	MILLENNIUM MANAGEMENT LLC	425,032	1.00%	$51.0M	NEW
11	FULLER & THALER ASSET MANAGEMENT, INC.	418,565	0.98%	$50.2M	NEW
12	EMERALD ADVISERS, LLC	375,858	0.88%	$45.1M	+136,296 (+56.9%)
13	NEXT CENTURY GROWTH INVESTORS LLC	364,467	0.85%	$43.7M	+273,903 (+302.4%)
14	UBS Group AG	344,287	0.81%	$41.3M	+222,683 (+183.1%)
15	JPMORGAN CHASE & CO	340,371	0.80%	$41.0M	+57,231 (+20.2%)
16	AMERIPRISE FINANCIAL INC	320,612	0.75%	$38.5M	+100,577 (+45.7%)
17	OBERWEIS ASSET MANAGEMENT INC/	299,030	0.70%	$35.9M	NEW
18	WELLS FARGO & COMPANY/MN	271,554	0.64%	$32.6M	+270,446 (+24408.5%)
19	ALLIANCEBERNSTEIN L.P.	262,103	0.61%	$20.7M	+38,852 (+17.4%)
20	Napean Trading & Investment Co (Singapore) PTE Ltd	233,333	0.55%	$28.0M	—
21	UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC	223,933	0.53%	$26.9M	-16,654 (-6.9%)
22	EMERALD MUTUAL FUND ADVISERS TRUST	203,990	0.48%	$24.5M	+71,784 (+54.3%)
23	Penn Capital Management Company, LLC	129,602	0.30%	$15.5M	+3,267 (+2.6%)
24	BNP PARIBAS FINANCIAL MARKETS	122,527	0.29%	$14.7M	+122,519 (+1531487.5%)
25	GOLDMAN SACHS GROUP INC	120,325	0.28%	$14.4M	+116,167 (+2793.8%)
26	NEW YORK STATE COMMON RETIREMENT FUND	117,771	0.28%	$14.1M	+29,089 (+32.8%)
27	VOLORIDGE INVESTMENT MANAGEMENT, LLC	117,063	0.27%	$14.0M	NEW
28	BlackRock, Inc.	114,281	0.27%	$13.7M	+19,121 (+20.1%)
29	FRED ALGER MANAGEMENT, LLC	114,123	0.27%	$13.7M	NEW
30	RENAISSANCE TECHNOLOGIES LLC	96,600	0.23%	$11.6M	+45,346 (+88.5%)
31	T. Rowe Price Investment Management, Inc.	92,957	0.22%	$11.2M	NEW
32	GEODE CAPITAL MANAGEMENT, LLC	87,934	0.21%	$10.6M	-1,180 (-1.3%)
33	PERCEPTIVE ADVISORS LLC	86,812	0.20%	$10.4M	-5,000 (-5.4%)
34	LORD, ABBETT & CO. LLC	86,293	0.20%	$10.4M	+42,004 (+94.8%)
35	HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND	83,300	0.20%	$10.0M	NEW
36	HRT FINANCIAL LP	80,709	0.19%	$9.7M	NEW
37	MASSACHUSETTS FINANCIAL SERVICES CO /MA/	78,977	0.19%	$9.5M	-80,596 (-50.5%)
38	Greenwich Wealth Management LLC	71,625	0.17%	$8.6M	NEW
39	Blue Water Life Science Advisors, LP	70,000	0.16%	$8.4M	+50,000 (+250.0%)
40	TD Asset Management Inc	63,482	0.15%	$7.6M	+20,374 (+47.3%)
41	BANK OF AMERICA CORP /DE/	59,040	0.14%	$7.1M	+46,333 (+364.6%)
42	Verition Fund Management LLC	57,000	0.13%	$6.8M	NEW
43	SUSQUEHANNA INTERNATIONAL GROUP, LLP	54,598	0.13%	$6.6M	+42,112 (+337.3%)
44	Ensign Peak Advisors, Inc	51,427	0.12%	$6.2M	-74 (-0.1%)
45	Jump Financial, LLC	46,300	0.11%	$5.6M	NEW
46	MARSHALL WACE, LLP	44,662	0.10%	$5.4M	NEW
47	Fox Hill Wealth Management	43,724	0.10%	$5.2M	NEW
48	F/m Investments LLC	43,600	0.10%	$5.2M	+26,692 (+157.9%)
49	Weiss Asset Management LP	43,057	0.10%	$5.2M	NEW
50	VANGUARD FIDUCIARY TRUST CO	42,874	0.10%	$5.1M	+15,083 (+54.3%)
51	MANUFACTURERS LIFE INSURANCE COMPANY, THE	41,697	0.10%	$5.0M	+11,191 (+36.7%)
52	REGENTS OF THE UNIVERSITY OF CALIFORNIA	40,863	0.10%	$4.9M	NEW
53	STATE STREET CORP	35,718	0.08%	$4.3M	+16,018 (+81.3%)
54	Universal- Beteiligungs- und Servicegesellschaft mbH	32,532	0.08%	$3.9M	+11,937 (+58.0%)
55	TWO SIGMA INVESTMENTS, LP	30,176	0.07%	$3.6M	-52,600 (-63.5%)
56	Russell Investments Group, Ltd.	29,074	0.07%	$3.5M	+10,415 (+55.8%)
57	Trexquant Investment LP	28,105	0.07%	$3.4M	NEW
58	CHARLES SCHWAB INVESTMENT MANAGEMENT INC	26,612	0.06%	$3.2M	-1,442 (-5.1%)
59	D. E. Shaw & Co., Inc.	25,981	0.06%	$3.1M	+22,119 (+572.7%)
60	SEVEN GRAND MANAGERS, LLC	25,000	0.06%	$3.0M	—
61	ROYAL BANK OF CANADA	24,962	0.06%	$3.0M	+20,192 (+423.3%)
62	Quantbot Technologies LP	24,651	0.06%	$3.0M	+24,611 (+61527.5%)
63	OpenArc Corporate Advisory, LLC	24,482	0.06%	$2.9M	NEW
64	TUDOR INVESTMENT CORP ET AL	21,517	0.05%	$2.6M	NEW
65	MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.	21,391	0.05%	$2.6M	NEW
66	One Wealth Advisors, LLC	19,942	0.05%	$2.4M	NEW
67	MORGAN STANLEY	18,421	0.04%	$2.2M	+5,835 (+46.4%)
68	XTX Topco Ltd	18,152	0.04%	$2.2M	+4,973 (+37.7%)
69	FIRST TRUST ADVISORS LP	17,498	0.04%	$2.1M	NEW
70	BARCLAYS PLC	17,446	0.04%	$2.1M	+14,688 (+532.6%)
71	POLEN CAPITAL MANAGEMENT LLC	16,975	0.04%	$2.0M	NEW
72	CITADEL ADVISORS LLC	15,155	0.04%	$1.8M	NEW
73	Vontobel Holding Ltd.	15,123	0.04%	$1.8M	NEW
74	Scientech Research LLC	14,490	0.03%	$1.7M	NEW
75	DEUTSCHE BANK AG\	13,640	0.03%	$1.6M	—
76	OSAIC HOLDINGS, INC.	13,536	0.03%	$1.6M	+13,116 (+3122.9%)
77	SIERRA SUMMIT ADVISORS LLC	11,911	0.03%	$1.4M	NEW
78	Caerus Investment Advisors, LLC	11,453	0.03%	$1.4M	NEW
79	Bellevue Group AG	10,554	0.02%	$1.3M	—
80	SEI INVESTMENTS CO	9,589	0.02%	$1.2M	-3,810 (-28.4%)
81	Cresset Asset Management, LLC	9,129	0.02%	$1.1M	NEW
82	Squarepoint Ops LLC	8,773	0.02%	$1.1M	-14,173 (-61.8%)
83	CreativeOne Wealth, LLC	7,974	0.02%	$957K	NEW
84	FIFTH THIRD BANCORP	7,510	0.02%	$901K	+7,376 (+5504.5%)
85	BLAIR WILLIAM & CO/IL	6,978	0.02%	$837K	NEW
86	LPL Financial LLC	6,795	0.02%	$815K	NEW
87	Entropy Technologies, LP	6,700	0.02%	$804K	NEW
88	Steward Partners Investment Advisory, LLC	6,480	0.02%	$777K	+6,180 (+2060.0%)
89	GSA CAPITAL PARTNERS LLP	6,203	0.01%	$744K	NEW
90	TWO SIGMA SECURITIES, LLC	5,992	0.01%	$719K	NEW
91	BRANDYWINE MANAGERS, LLC	5,750	0.01%	$690K	—
92	CERTUITY, LLC	5,342	0.01%	$641K	NEW
93	Green Alpha Advisors, LLC	5,197	0.01%	$624K	+29 (+0.6%)
94	Jasper Ridge Partners, L.P.	5,127	0.01%	$615K	NEW
95	MIC Capital Management UK LLP	4,892	0.01%	$587K	NEW
96	SummitTX Capital, L.P.	4,415	0.01%	$530K	NEW
97	Pathstone Holdings, LLC	4,346	0.01%	$519K	+66 (+1.5%)
98	LAVELLE CAPITAL LP	4,086	0.01%	$490K	NEW
99	Quadrature Capital Ltd	3,973	0.01%	$477K	NEW
100	CONNABLE OFFICE INC	3,850	0.01%	$462K	—
101	Yorktown Management & Research Co Inc	3,450	0.01%	$414K	NEW
102	GREENUP STREET WEALTH MANAGEMENT LLC	3,391	0.01%	$407K	NEW
103	FIRST MANHATTAN CO. LLC.	3,362	0.01%	$403K	NEW
104	CANADA PENSION PLAN INVESTMENT BOARD	3,300	0.01%	$396K	NEW
105	ENVESTNET ASSET MANAGEMENT INC	3,252	0.01%	$390K	NEW
106	Cornerstone Investment Partners, LLC	3,248	0.01%	$390K	-154 (-4.5%)
107	Cerity Partners LLC	3,000	0.01%	$360K	NEW
108	Vident Advisory, LLC	2,980	0.01%	$358K	NEW
109	Harbour Capital Advisors, LLC	2,850	0.01%	$361K	NEW
110	Virtu Financial LLC	2,833	0.01%	$340K	NEW
111	PNC Financial Services Group, Inc.	2,554	0.01%	$306K	NEW
112	MONETA GROUP INVESTMENT ADVISORS LLC	2,446	0.01%	$293K	NEW
113	RAYMOND JAMES FINANCIAL INC	2,434	0.01%	$292K	NEW
114	RiverPark Advisors, LLC	2,415	0.01%	$290K	+1,788 (+285.2%)
115	EDMOND DE ROTHSCHILD HOLDING S.A.	2,405	0.01%	$289K	NEW
116	Renaissance Capital LLC	2,373	0.01%	$285K	+446 (+23.1%)
117	DSM CAPITAL PARTNERS LLC	2,229	0.01%	$267K	NEW
118	Genesis Financial Group, LLC	2,000	0.00%	$240K	NEW
119	Thrive Wealth Management, LLC	2,000	0.00%	$240K	NEW
120	OCCUDO QUANTITATIVE STRATEGIES LP	1,980	0.00%	$238K	NEW
121	Bank of New York Mellon Corp	1,932	0.00%	$232K	NEW
122	Caitong International Asset Management Co., Ltd	1,910	0.00%	$229K	NEW
123	VICTORY CAPITAL MANAGEMENT INC	1,907	0.00%	$229K	NEW
124	ExodusPoint Capital Management, LP	1,838	0.00%	$221K	NEW
125	Gotham Asset Management, LLC	1,782	0.00%	$214K	NEW
126	Vanguard Global Advisers, LLC	1,755	0.00%	$211K	—
127	Freestone Grove Partners LP	1,533	0.00%	$184K	NEW
128	US BANCORP \DE\	1,349	0.00%	$162K	+1,285 (+2007.8%)
129	Smartleaf Asset Management LLC	1,297	0.00%	$156K	—
130	CITIGROUP INC	886	0.00%	$106K	+885 (+88500.0%)
131	JONES FINANCIAL COMPANIES LLLP	816	0.00%	$96K	+804 (+6700.0%)
132	LANARK FINANCIAL, INC.	563	0.00%	$68K	NEW
133	TOTH FINANCIAL ADVISORY CORP	500	0.00%	$60K	NEW
134	MCF Advisors LLC	448	0.00%	$54K	+344 (+330.8%)
135	Forum Finance Group S.A.	300	0.00%	$29K	NEW
136	Rockefeller Capital Management L.P.	282	0.00%	$34K	NEW
137	LOS ANGELES CAPITAL MANAGEMENT LLC	259	0.00%	$31K	NEW
138	Tower Research Capital LLC (TRC)	221	0.00%	$27K	NEW
139	HARBOUR INVESTMENTS, INC.	186	0.00%	$22K	+6 (+3.3%)
140	Parallel Advisors, LLC	150	0.00%	$18K	NEW
141	Rossby Financial, LCC	100	0.00%	$12K	—
142	Civilization Ventures Management, LLC	88	0.00%	$9K	-1,099,343 (-100.0%)
143	Essential Investment Partners LLC	50	0.00%	$6K	—
144	Colonial Trust Advisors	50	0.00%	$6K	—
145	PETERSON WEALTH MANAGEMENT	47	0.00%	$6K	NEW
146	WOLFF WIESE MAGANA LLC	40	0.00%	$5K	NEW
147	SBI Securities Co., Ltd.	35	0.00%	$4K	-645 (-94.9%)
148	Physician Wealth Advisors, Inc.	17	0.00%	$2K	—
149	HUNTINGTON NATIONAL BANK	15	0.00%	$2K	—
150	Frazier Financial Advisors, LLC	14	0.00%	$2K	—
151	Bare Financial Services, Inc	12	0.00%	$1K	NEW
152	Fortitude Family Office, LLC	9	0.00%	$1K	NEW
153	FMR LLC	7	0.00%	$840	NEW
154	Marquette Asset Management, LLC	7	0.00%	$840	—
155	Quarry LP	1	0.00%	$120	NEW

Exited since 2026-03-31 (11 filers; largest 11 shown)

NVP ASSOCIATES, LLC	−513,330
Capital International Investors	−178,000
PFM Health Sciences, LP	−88,069
Deep Track Capital, LP	−50,000
PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO	−19,499
SOROS FUND MANAGEMENT LLC	−14,500
NOMURA HOLDINGS INC	−8,600
Brevan Howard Capital Management LP	−7,716
Alyeska Investment Group, L.P.	−7,000
Walleye Capital LLC	−5,956
MYDA Advisors LLC	−4,000

Large holders from 13D/13G (latest per reporting person, last 2 years)

Filed when a holder crosses 5% or changes materially, so often more current than the quarter-end 13F. Percentages are the filer's own, against the share count they used.

Reporting person	Form	Filed	Event	Shares	% of class
David Tsao	SCHEDULE 13G	2026-02-17	2025-12-31	3,035,767	6.9%
Oguzhan Atay	SCHEDULE 13G	2026-02-17	2025-12-31	3,206,861	7.3%
NeoTribe Associates I, L.P. ("NTA I")	SCHEDULE 13G	2026-02-13	2025-11-07	109,204	0.3%
NeoTribe Ventures I, L.P. ("NTV I")	SCHEDULE 13G	2026-02-13	2025-11-07	2,710,286	6.6%
Neotribe SPV I BTO, LLC ("NT SPV I")	SCHEDULE 13G	2026-02-13	2025-11-07	242,216	0.6%
Neotribe Partners SPV I BTO, LLC ("NTP SPV I")	SCHEDULE 13G	2026-02-13	2025-11-07	242,216	0.6%
NeoTribe Partners I, LLC ("NTP I")	SCHEDULE 13G	2026-02-13	2025-11-07	2,819,490	6.8%
Neotribe Ignite Partners I, LLC ("NTIP I")	SCHEDULE 13G	2026-02-13	2025-11-07	1,297,799	3.1%
Neotribe Ignite Fund I, L.P. ("NTIF I")	SCHEDULE 13G	2026-02-13	2025-11-07	1,297,799	3.1%
Krishna Kittu Kolluri ("Kolluri")	SCHEDULE 13G	2026-02-13	2025-11-07	4,359,505	10.6%
Hummingbird Collective CommV	SCHEDULE 13D	2026-01-20	2025-11-06	18,845	0.05%
Lukas Decoster	SCHEDULE 13D	2026-01-20	2025-11-06	7,887,237	19.6%
Hummingbird Ventures Management NV	SCHEDULE 13D	2026-01-20	2025-11-06	7,887,237	19.6%
Hummingbird Ventures III CommV	SCHEDULE 13D	2026-01-20	2025-11-06	2,580,833	6.43%
Hummingbird Opportunity Fund II CommV	SCHEDULE 13D	2026-01-20	2025-11-06	2,631,664	6.55%
Hummingbird Dragons CommV	SCHEDULE 13D	2026-01-20	2025-11-06	2,015,118	5.02%
Barend Van den Brande	SCHEDULE 13D	2026-01-20	2025-11-06	7,887,237	19.6%
HB&Q NV	SCHEDULE 13D	2026-01-20	2025-11-06	640,727	1.6%
Firat Ileri	SCHEDULE 13D	2026-01-20	2025-11-06	7,887,237	19.6%

Source: SEC Form 13F-HR information tables for the quarter ending 2026-06-30 (filed within 45 days of quarter end; amendments applied; values normalised to dollars), the share count from the company's latest 10-K/10-Q XBRL cover page, and Schedule 13D/13G filings. Each row is a legal 13F filer as filed — related entities (e.g. Vanguard's advisers) are not merged. Retail brokerage accounts are not reported on 13F, so the remainder is mostly retail and insiders.