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OMC · MCO 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.

OMCMCO
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.
  • OMC
  • MCO
010203040202120222023202420252026
Holders and value by quarter
QuarterOMCMCO
Q3 202019 holders, $1.2bn30 holders, $17.0bn
Q4 202019 holders, $1.5bn21 holders, $16.9bn
Q1 202113 holders, $1.5bn17 holders, $16.9bn
Q2 202114 holders, $1.7bn16 holders, $20.2bn
Q3 202119 holders, $1.4bn25 holders, $19.9bn
Q4 202113 holders, $1.6bn25 holders, $22.0bn
Q1 202213 holders, $2.0bn22 holders, $19.1bn
Q2 202212 holders, $1.2bn19 holders, $15.4bn
Q3 202212 holders, $1.2bn21 holders, $13.6bn
Q4 202212 holders, $1.6bn17 holders, $15.5bn
Q1 202316 holders, $2.0bn20 holders, $17.3bn
Q2 202310 holders, $1.8bn25 holders, $19.4bn
Q3 202313 holders, $1.3bn21 holders, $17.2bn
Q4 202314 holders, $1.6bn21 holders, $22.3bn
Q1 202410 holders, $2.2bn22 holders, $21.9bn
Q2 202410 holders, $2.4bn24 holders, $23.6bn
Q3 202410 holders, $2.3bn31 holders, $26.8bn
Q4 202410 holders, $1.8bn31 holders, $25.7bn
Q1 202519 holders, $1.8bn30 holders, $25.2bn
Q2 202517 holders, $1.8bn30 holders, $26.8bn
Q3 202514 holders, $1.9bn31 holders, $26.0bn
Q4 202522 holders, $3.5bn32 holders, $27.7bn
Q1 202610 holders, $2.3bn28 holders, $23.9bn
Q2 20267 holders, $1.7bn31 holders, $24.9bn
OMC

Omnicom Group Inc

Holders
10
Reported value
$1.8bn
Buyers
7
Sellers
3

Breadth +4 among 94 comparable managers.

Business and payment services
MCO

Moodys Corp

Holders
31
Reported value
$25.7bn
Buyers
11
Sellers
16

Breadth -5 among 94 comparable managers.

Business and payment servicesFinancial services · L3VLUP

Who holds both, Q4 2024

Among the 36 tracked managers listing any of them. "Only" is about listed positions: a manager may hold the other below its listed range.

Only OMC (5)

Capital Research Global Investors, Caxton Associates LLP, Schonfeld Strategic Advisors LLC, Wellington Management Group LLP, Woodline Partners LP

Only MCO (26)

Acadian Asset Management LLC, Akre Capital Management LLC, AllianceBernstein LP, Arrowstreet Capital LP, Baillie Gifford & Co, Berkshire Hathaway Inc, Brevan Howard Capital Management LP, Citadel Advisors LLC, Dodge & Cox, Fidelity (FMR LLC), GAMCO Investors Inc, Harris Associates LP, Hudson Bay Capital Management LP, Invesco Ltd, Janus Henderson Group Ltd, Man Group PLC, Markel Group Inc, Marshall Wace LLP, Maverick Capital Ltd, Moore Capital Management LP, Neuberger Berman Group LLC, Quantbot Technologies LP, Renaissance Technologies LLC, T. Rowe Price Associates Inc, TCI Fund Management Ltd, and 1 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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