BILLIONTOONE INC (BLLN) is held by 56 institutional investors that disclose positions via SEC 13F filings. The largest disclosed holder is BAILLIE GIFFORD & CO as of Q1 2026.

Are institutions buying or selling BLLN?

In Q1 2026, 42 institutions opened or increased positions in BILLIONTOONE INC while 19 reduced or exited — a net buying quarter.

What is the Smart Money Verdict on BLLN?

The Smart Money Verdict combines four independent sources (institutional 13F activity, insider trades, activist filings, and congressional trades) into a single assessment for BILLIONTOONE INC.

How many hedge funds hold BLLN?

56 institutional investors report holding BILLIONTOONE INC (BLLN) as of Q1 2026, based on SEC 13F filings.

Is institutional money flowing into BLLN?

As of Q1 2026, tracked institutions in BILLIONTOONE INC show 42 buyers versus 19 sellers — net inflows.

BILLIONTOONE INC

BLLN·090168105·US·Common Stock·Healthcare - Diagnostics & Research-Activist

Holders

Avg rating(15 Elite)

$518.3M

Total Value

69% (66)

Fund Consensus

42 buying - 19 selling

Smart Money Verdict

View all

Held by 56 funds

15 elite

Who's Trading

InsiderSRSakakibara Shan RikuSell $500KJul 9, 2026

InsiderSRSakakibara Shan RikuSell $22KJul 9, 2026

InsiderSRSakakibara Shan RikuSell $140KJul 9, 2026

InsiderSRSakakibara Shan RikuSell $169KJul 9, 2026

InsiderAOAtay OguzhanSell $939KJul 9, 2026

InsiderAOAtay OguzhanSell $253KJul 9, 2026

InsiderAOAtay OguzhanSell $339KJul 9, 2026

ActivistDTDavid Tsao6.9%Feb 17, 2026

ActivistOAOguzhan Atay7.3%Feb 17, 2026

View all insider trades View all activist filings

13F: Mar 31, 2026Insider & Congress: Updated regularly

Fund	Action	Shares	Value	Weight	Est. P&L	Conviction
BAILLIE GIFFORD & CO	Decreased	1.3M(-0.6%)	$99.5M	0.1%	+48.98%	0
BAMCO INC /NY/	Increased	741,485(+336.2%)	$58.5M	0.2%	+51.66%	57
PRICE T ROWE ASSOCIATES INC /MD/	Increased	737,518(+52.0%)	$58.2M	0.0%	+50.16%	41
Neuberger Berman Group LLC	Increased	709,214(+1.2%)	$37.8M	0.0%	+49.02%	29
Invesco Ltd.	Increased	406,512(+114.2%)	$32.1M	0.0%	+50.83%	47
WASATCH ADVISORS LP	New	369,638	$29.2M	0.2%	0.00%	48
JPMORGAN CHASE & CO	Decreased	283,140(-27.8%)	$19.9M	0.0%	+48.98%	0
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC	Increased	240,587(+5.7%)	$19M	0.0%	+49.17%	30
ALLIANCEBERNSTEIN L.P.	Increased	223,251(+7.0%)	$18.3M	0.0%	+49.21%	30
AMERIPRISE FINANCIAL INC	Increased	220,035(+80.0%)	$17.4M	0.0%	+50.52%	43
VAVANGUARD CAPITAL MANAGEMENT LLC	New	182,463	$14.4M	0.0%	+52.48%	39
Capital International Investors	Unchanged	178,000	$14.1M	0.0%	+48.98%	0
MASSACHUSETTS FINANCIAL SERVICES CO /MA/	Decreased	159,573(-2.3%)	$12.6M	0.0%	+48.98%	0
VPVANGUARD PORTFOLIO MANAGEMENT LLC	New	151,213	$11.9M	0.0%	+52.48%	39
UBS Group AG	Increased	121,604(+284.8%)	$9.6M	0.0%	+51.55%	45
BlackRock, Inc.	Increased	95,160(+33.3%)	$7.5M	0.0%	+49.84%	35
GEODE CAPITAL MANAGEMENT, LLC	Increased	89,114(+8.6%)	$7M	0.0%	+49.26%	30
NEW YORK STATE COMMON RETIREMENT FUND	Increased	88,682(+1633.1%)	$7M	0.0%	+52.27%	44
TWO SIGMA INVESTMENTS, LP	New	82,776	$6.5M	0.0%	+52.48%	38
Ensign Peak Advisors, Inc	New	51,501	$4.1M	0.0%	+52.48%	37