BillionToOne BLLN Institutional Ownership

NASDAQ BLLN

$95.29 -0.93 (-0.97%)

As of: Aug 27, 2026 · 3:59 PM EDT

Institutions by Trading Activity

156 Institutions

Increased 128 82.1%

Unchanged 15 9.6%

Reduced 13 8.3%

Ownership Statistics

13F · as of 30 Jun, 2026

Institutional Ownership

32.98%

▲+8.30 pp QoQ

Shares Held by Institutions

15.30Mn

of 46.40Mn outstanding

▲+46.56% QoQ

Shares Outstanding

46.40Mn

31.10Mn held outside 13F filers

Institutional Investors

156

filed 13F for Jun 2026

▲+66 vs prior quarter

Net Shares Added (QoQ)

+4.86Mn

accumulated since last quarter

Value of Holdings

$1.47Bn

reported market value

Shares Owned by Institutions

Shares held % of outstanding

Latest —

Average ownership —

Peak ownership —

Shares Purchased/Sold by Institutions

Accumulated Distributed

Latest quarter —

Net over range —

Accumulating quarters —

Ownership Summary

Quarter ending 30 Jun, 2026

BillionToOne, Inc. (NASDAQ:BLLN) has 89 institutional investors with active 13F positions as of March 2026.

These investors held 24.7% of outstanding shares in March 2026, down from 57.9% in December 2025.
Their total shares held in BLLN increased 37.03% from the prior quarter, while the number of investors in BillionToOne stayed flat year over year.
Activity in BLLN broke down as 61 buyers, 15 sellers, and 13 unchanged among 89 total holders.
In total, institutional investors held 11.34Mn shares in BillionToOne as of March 2026, up by 3.06Mn shares quarter on quarter, and with no net change year over year.
ADAMS STREET PARTNERS LLC is the top holder of BillionToOne as of March 31, 2026, with 1.71Mn shares representing 3.73% of outstanding stock.
The most significant purchases of BLLN for the quarter ending March 2026 came from PRICE T ROWE ASSOCIATES INC /MD/ (737.52K), BAMCO INC /NY/ (571.48K), WASATCH ADVISORS LP (369.64K), Invesco Ltd. (216.69K), VANGUARD CAPITAL MANAGEMENT LLC (182.46K).
Leading sellers of BillionToOne shares for the quarter ending March 2026 were Jpmorgan Chase & Co (108.82K), Goldman Sachs Group Inc (37.27K), MYDA Advisors LLC (36.2K), BAILLIE GIFFORD & CO (8.17K), XTX Topco Ltd (7.5K).
According to Business Quant data, leading holders of BLLN for March 2026 are ADAMS STREET PARTNERS LLC (1.71Mn), BAILLIE GIFFORD & CO (1.26Mn), Civilization Ventures Management, LLC (1.1Mn), BAMCO INC /NY/ (741.48K), PRICE T ROWE ASSOCIATES INC /MD/ (737.52K), Neuberger Berman Group LLC (709.21K), NVP Associates, LLC (513.33K), Invesco Ltd. (406.51K), WASATCH ADVISORS LP (369.64K), Jpmorgan Chase & Co (283.14K).

Form 13F Holdings

156 Institutional Holders

Report period 30 Jun, 2026

Total shares held 15.30Mn

Of outstanding 32.98%

#	Institution	CIK	Shares Held	% of Outstanding	Change (QoQ)	Change (%)	Value (USD)
1	ADAMS STREET PARTNERS LLC	0001193586	1,711,430	3.69%	0	0.00%	$205.34Mn
2	PRICE T ROWE ASSOCIATES INC /MD/	0000080255	1,010,322	2.18%	▲272,804	+36.99%	$121.22K
3	BAILLIE GIFFORD & CO	0001088875	901,420	1.94%	▼358,573	-28.46%	$108.15Mn
4	VANGUARD PORTFOLIO MANAGEMENT LLC	0002100121	840,970	1.81%	▲689,757	+456.15%	$100.90Mn
5	Invesco Ltd.	0000914208	835,614	1.80%	▲429,102	+105.56%	$100.26Mn
6	VANGUARD CAPITAL MANAGEMENT LLC	0002100119	799,468	1.72%	▲617,005	+338.15%	$95.92Mn
7	Neuberger Berman Group LLC	0001465109	764,215	1.65%	▲55,001	+7.76%	$91.69Mn
8	BAMCO INC /NY/	0001017918	742,093	1.60%	▲608	+0.08%	$89.04Mn
9	WASATCH ADVISORS LP	0000814133	518,084	1.12%	▲148,446	+40.16%	$62.16Mn
10	MILLENNIUM MANAGEMENT LLC	0001273087	425,032	0.92%	▲425,032	0.00%	$51.00Mn
11	FULLER & THALER ASSET MANAGEMENT, INC.	0001082327	418,565	0.90%	▲418,565	0.00%	$50.22Mn
12	EMERALD ADVISERS, LLC	0001015083	375,858	0.81%	▲136,296	+56.89%	$45.10Mn
13	NEXT CENTURY GROWTH INVESTORS LLC	0001134007	364,467	0.79%	▲273,903	+302.44%	$43.73Mn
14	UBS Group AG	0001610520	344,287	0.74%	▲222,683	+183.12%	$41.31Mn
15	Jpmorgan Chase & Co	0000019617	340,371	0.73%	▲57,231	+20.21%	$41.01Mn
16	Ameriprise Financial Inc	0000820027	320,612	0.69%	▲100,577	+45.71%	$38.50Mn
17	OBERWEIS ASSET MANAGEMENT INC/	0000937886	299,030	0.64%	▲299,030	0.00%	$35.88Mn
18	Wells Fargo & Company/Mn	0000072971	271,554	0.59%	▲270,446	+24,408.48%	$32.58Mn
19	ALLIANCEBERNSTEIN L.P.	0001109448	262,103	0.56%	▲38,852	+17.40%	$20.69Mn
20	Napean Trading & Investment Co (Singapore) PTE Ltd	0002011874	233,333	0.50%	0	0.00%	$28.00Mn

Showing 1 to 20 of 156 holders