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MD · 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.

MDUNH
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.
  • MD
  • UNH
0204060202120222023202420252026
Holders and value by quarter
QuarterMDUNH
Q3 20204 holders, $154m37 holders, $71.0bn
Q4 20207 holders, $380m36 holders, $79.4bn
Q1 20215 holders, $397m37 holders, $81.7bn
Q2 20218 holders, $502m43 holders, $86.1bn
Q3 20215 holders, $360m38 holders, $81.3bn
Q4 20214 holders, $364m38 holders, $104bn
Q1 20222 holders, $311m41 holders, $105bn
Q2 20223 holders, $282m33 holders, $107bn
Q3 20223 holders, $206m42 holders, $102bn
Q4 20223 holders, $178m43 holders, $116bn
Q1 20233 holders, $123m51 holders, $90.5bn
Q2 20233 holders, $125m43 holders, $88.3bn
Q3 20232 holders, $98m43 holders, $91.0bn
Q4 20232 holders, $74m42 holders, $92.5bn
Q1 20242 holders, $82m44 holders, $82.5bn
Q2 20241 holders, $985k43 holders, $87.4bn
Q3 20242 holders, $95m37 holders, $95.7bn
Q4 20242 holders, $98m45 holders, $79.2bn
Q1 20252 holders, $101m49 holders, $81.5bn
Q2 20251 holders, $1.1m50 holders, $44.5bn
Q3 20253 holders, $4.8m42 holders, $44.3bn
Q4 20253 holders, $31m41 holders, $42.6bn
Q1 20261 holders, $33m44 holders, $38.0bn
Q2 20262 holders, $34m43 holders, $62.3bn
MD

Mednax Inc

Holders
3
Reported value
$31m
Buyers
9
Sellers
14

Breadth -5 among 92 comparable managers.

Health care services and research
UNH

Unitedhealth Group Inc

Holders
41
Reported value
$42.6bn
Buyers
25
Sellers
26

Breadth -1 among 92 comparable managers.

Health care services and researchManaged care

Who holds both, Q4 2025

Among the 42 tracked managers listing any of them. "Only" is about listed positions: a manager may hold the other below its listed range.

Only MD (1)

Winton Group Ltd

Only UNH (39)

Acadian Asset Management LLC, AllianceBernstein LP, Appaloosa LP, AQR Capital Management LLC, Arrowstreet Capital LP, Baillie Gifford & Co, Balyasny Asset Management LLC, Berkshire Hathaway Inc, Capital Research Global Investors, Capital World Investors, Citadel Advisors LLC, D. E. Shaw & Co., Dodge & Cox, Farallon Capital Management LLC, Fidelity (FMR LLC), First Eagle Investment Management LLC, Freestone Grove Partners LP, Harris Associates LP, Invesco Ltd, Jane Street Group LLC, Janus Henderson Group Ltd, Markel Group Inc, Marshall Wace LLP, Millennium Management LLC, Moore Capital Management LP, and 14 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.

Back to the 13F Explorer →