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ACM · MA 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.

ACMMA
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.
  • ACM
  • MA
0204060202120222023202420252026
Holders and value by quarter
QuarterACMMA
Q3 202012 holders, $1.5bn45 holders, $56.1bn
Q4 202012 holders, $1.5bn52 holders, $57.9bn
Q1 20218 holders, $1.7bn50 holders, $56.4bn
Q2 20217 holders, $1.5bn50 holders, $54.9bn
Q3 20217 holders, $1.4bn50 holders, $48.9bn
Q4 20216 holders, $1.6bn42 holders, $49.3bn
Q1 20225 holders, $1.8bn38 holders, $50.1bn
Q2 20226 holders, $1.2bn48 holders, $45.4bn
Q3 20226 holders, $1.3bn53 holders, $40.8bn
Q4 20229 holders, $1.5bn37 holders, $65.6bn
Q1 20239 holders, $1.1bn45 holders, $50.3bn
Q2 20237 holders, $883m47 holders, $51.2bn
Q3 20236 holders, $739m52 holders, $49.7bn
Q4 202310 holders, $797m46 holders, $51.7bn
Q1 202414 holders, $894m48 holders, $58.0bn
Q2 202412 holders, $679m49 holders, $51.2bn
Q3 202413 holders, $1.0bn43 holders, $55.8bn
Q4 20249 holders, $701m43 holders, $58.3bn
Q1 202511 holders, $511m49 holders, $64.7bn
Q2 202511 holders, $986m50 holders, $68.3bn
Q3 202510 holders, $1.2bn44 holders, $68.1bn
Q4 202511 holders, $759m43 holders, $65.6bn
Q1 202612 holders, $279m46 holders, $57.4bn
Q2 202613 holders, $549m43 holders, $58.1bn
ACM

Aecom Technology Corp

Holders
11
Reported value
$759m
Buyers
23
Sellers
11

Breadth +12 among 92 comparable managers.

Business and payment services
MA

Mastercard Incorporated

Holders
43
Reported value
$65.6bn
Buyers
19
Sellers
30

Breadth -11 among 92 comparable managers.

Business and payment servicesFinancial services · L3VLUP

Who holds both, Q4 2025

Among the 48 tracked managers listing any of them. "Only" is about listed positions: a manager may hold the other below its listed range.

Only ACM (5)

Caxton Associates LLP, ExodusPoint Capital Management LP, Marshall Wace LLP, Renaissance Technologies LLC, Verition Fund Management LLC

Only MA (37)

Acadian Asset Management LLC, Akre Capital Management LLC, AQR Capital Management LLC, Arrowstreet Capital LP, Artisan Partners LP, Baillie Gifford & Co, Berkshire Hathaway Inc, Brevan Howard Capital Management LP, Bridgewater Associates LP, Capital Research Global Investors, Capital World Investors, D. E. Shaw & Co., Davidson Kempner Capital Management LP, Egerton Capital UK LLP, Farallon Capital Management LLC, Fidelity (FMR LLC), GAMCO Investors Inc, Harris Associates LP, Hudson Bay Capital Management LP, Janus Henderson Group Ltd, Lone Pine Capital LLC, Man Group PLC, Markel Group Inc, MFS Investment Management, Millennium Management LLC, and 12 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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