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BLLN · UNH in the 13F filings

Two to four stocks side by side among the 95 tracked managers: who lists them, how that has moved, who bought and sold in a quarter, and which managers hold more than one.

BLLNUNH
Quarter
Q2 2026Q1 2026Q4 2025Q3 2025Q2 2025Q1 2025Q4 2024Q3 2024Q2 2024Q1 2024Q4 2023

Holders over time

Tracked managers listing each stock every quarter, at least, or their combined reported value. A gap is a quarter in which no tracked manager listed it. Click a quarter to compare there.
  • BLLN
  • UNH
0204060202120222023202420252026
Holders and value by quarter
QuarterBLLNUNH
Q3 2020none listed holders, n.a.37 holders, $71.0bn
Q4 2020none listed holders, n.a.36 holders, $79.4bn
Q1 2021none listed holders, n.a.37 holders, $81.7bn
Q2 2021none listed holders, n.a.43 holders, $86.1bn
Q3 2021none listed holders, n.a.38 holders, $81.3bn
Q4 2021none listed holders, n.a.38 holders, $104bn
Q1 2022none listed holders, n.a.41 holders, $105bn
Q2 2022none listed holders, n.a.33 holders, $107bn
Q3 2022none listed holders, n.a.42 holders, $102bn
Q4 2022none listed holders, n.a.43 holders, $116bn
Q1 2023none listed holders, n.a.51 holders, $90.5bn
Q2 2023none listed holders, n.a.43 holders, $88.3bn
Q3 2023none listed holders, n.a.43 holders, $91.0bn
Q4 2023none listed holders, n.a.42 holders, $92.5bn
Q1 2024none listed holders, n.a.44 holders, $82.5bn
Q2 2024none listed holders, n.a.43 holders, $87.4bn
Q3 2024none listed holders, n.a.37 holders, $95.7bn
Q4 2024none listed holders, n.a.45 holders, $79.2bn
Q1 2025none listed holders, n.a.49 holders, $81.5bn
Q2 2025none listed holders, n.a.50 holders, $44.5bn
Q3 2025none listed holders, n.a.42 holders, $44.3bn
Q4 20253 holders, $162m41 holders, $42.6bn
Q1 20262 holders, $101m44 holders, $38.0bn
Q2 20265 holders, $219m43 holders, $62.3bn
BLLN

BillionToOne Inc

Holders
0
Reported value
$0
Buyers
n.a.
Sellers
n.a.

No cross-section for this quarter.

Health care services and research
UNH

Unitedhealth Group Inc

Holders
44
Reported value
$82.5bn
Buyers
22
Sellers
25

Breadth -3 among 93 comparable managers.

Health care services and researchManaged care

Who holds both, Q1 2024

Among the 44 tracked managers listing any of them. "Only" is about listed positions: a manager may hold the other below its listed range.

Both (0)

No tracked manager lists every one of them.

Only BLLN (0)

None.

Only UNH (44)

Acadian Asset Management LLC, AllianceBernstein LP, Appaloosa LP, AQR Capital Management LLC, Arrowstreet Capital LP, Baillie Gifford & Co, Balyasny Asset Management LLC, Brevan Howard Capital Management LP, Capital Research Global Investors, Capital World Investors, Citadel Advisors LLC, D. E. Shaw & Co., D1 Capital Partners LP, Dodge & Cox, Eisler Capital Management Ltd, ExodusPoint Capital Management LP, Farallon Capital Management LLC, Fidelity (FMR LLC), First Eagle Investment Management LLC, GAMCO Investors Inc, Harris Associates LP, Invesco Ltd, Janus Henderson Group Ltd, Man Group PLC, Markel Group Inc, and 19 more

How much of the picture this is

A 13F is a manager’s long US-listed equity book at a quarter end, filed up to 45 days later. Buyers and sellers count comparable managers (those that filed both quarters) by shares, so a rise in value with no rise in shares is the price. Large books are listed to their largest positions. These are 95 tracked managers, not the institutional market.

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