L3VLUP
Quarter end
30 Sep 2025
the date the book describes
Filed
27 Oct 2026
latest of these filings; the earliest 29 Oct 2025
Managers listing it
31
at least, of 95 tracked, among listed positions
Comparable managers
95
filed both Q2 2025 and Q3 2025; 24 listed it in both
Shares listed
54,654,657
combined, among listed positions
Reported value
$26.0bn
combined, at the quarter end

Among the 95 comparable managers: 15 buyers (opened or added shares) and 14 sellers (trimmed or exited), at least, among listed positions. Their net change in shares is not known from listed positions, because at least one of them lists it in only one of the two quarters.

Managers listing MCO in Q3 2025

Share of 13F value is the position’s reported value over everything the manager reported that quarter. The share change is against Q2 2025, and only where both filings list the position. A rise in value with no rise in shares is the price, not buying.

31 of 31 holders

ActionFiling
Berkshire Hathaway Inc24,669,778$11.8bn4.40%Held014 Nov 2025 (the filing on sec.gov)
TCI Fund Management Ltd13,308,479$6.3bn12.03%Added+61,50014 Nov 2025 (the filing on sec.gov)
Fidelity (FMR LLC)5,688,895$2.7bn0.14%Trimmed-559,82813 Nov 2025 (the filing on sec.gov)
Akre Capital Management LLC2,118,949$1.0bn10.07%Trimmed-186,47513 Nov 2025 (the filing on sec.gov)
MFS Investment Management1,474,449$703m0.22%Trimmed-44,86729 Oct 2025 (the filing on sec.gov)
Invesco Ltd995,496$474m0.07%Trimmed-63,67113 Nov 2025 (the filing on sec.gov)
T. Rowe Price Associates Inc989,333$471m0.05%Added+303,36014 Nov 2025 (the filing on sec.gov)
Citadel Advisors LLC882,135$420m0.06%Addedn.a.14 Nov 2025 (the filing on sec.gov)
Baillie Gifford & Co738,640$352m0.26%Added+1,86231 Oct 2025 (the filing on sec.gov)
Neuberger Berman Group LLC687,145$327m0.24%Trimmed-14,76327 Oct 2026 (the filing on sec.gov)
Acadian Asset Management LLC431,581$206m0.36%Trimmed-223,29813 Nov 2025 (the filing on sec.gov)
Janus Henderson Group Ltd414,645$198m0.09%Trimmed-2,29914 Nov 2025 (the filing on sec.gov)
Point72 Asset Management LP345,071$164m0.28%Newnew14 Nov 2025 (the filing on sec.gov)
Two Sigma Investments LP324,251$154m0.23%Addedn.a.14 Nov 2025 (the filing on sec.gov)
Holocene Advisors LP283,744$135m0.31%Added+219,25114 Nov 2025 (the filing on sec.gov)
Marshall Wace LLP221,826$106m0.11%Added+119,70013 Nov 2025 (the filing on sec.gov)
Markel Group Inc213,890$102m0.83%Held031 Oct 2025 (the filing on sec.gov)
Balyasny Asset Management LLC197,826$94m0.12%Addedn.a.14 Nov 2025 (the filing on sec.gov)
AllianceBernstein LP161,109$77munder 0.1%Trimmed-4,67414 Nov 2025 (the filing on sec.gov)
Squarepoint Ops LLC118,666$57m0.06%Addedn.a.14 Nov 2025 (the filing on sec.gov)
Man Group PLC91,006$43m0.08%Trimmed-42,83914 Nov 2025 (the filing on sec.gov)
Freestone Grove Partners LP89,418$43m0.32%Added+84,92914 Nov 2025 (the filing on sec.gov)
Schonfeld Strategic Advisors LLC65,099$31m0.18%Added+3,13214 Nov 2025 (the filing on sec.gov)
Two Sigma Advisers LP53,000$25m0.05%Addedn.a.14 Nov 2025 (the filing on sec.gov)
Verition Fund Management LLC25,618$12m0.05%Addedn.a.14 Nov 2025 (the filing on sec.gov)
Page 1 of 2

Largest increases and reductions, by shares

Q2 2025 to Q3 2025, among managers that listed it in both quarters or opened it.

Increases

Reductions

New positions and exits

At least these many: a manager is shown exiting only where its own filing shows the position gone.

Ownership over time

Every quarter on file. A quarter-end value moves with the price as well as with the shares held; buyers and sellers count comparable managers, by shares.
31 in Q3 2024 to 31 in Q2 2026

Tracked managers listing it, at least.

0102030402014201620182020202220242026
the quarter shown share split complete books; unmarked quarters rest on listed positionsClick a quarter to open it.
MCO by quarter
QuarterHoldersReported valueBuyersSellers
Q2 201318$3.7bnn.a.n.a.
Q3 201315$4.5bnn.a.n.a.
Q4 201316$4.9bnn.a.n.a.
Q1 201417$5.0bnn.a.n.a.
Q2 201420$5.4bnn.a.n.a.
Q3 201419$5.6bnn.a.n.a.
Q4 201421$4.8bnn.a.n.a.
Q1 201524$5.5bnn.a.n.a.
Q2 201519$6.1bnn.a.n.a.
Q3 201521$5.6bnn.a.n.a.
Q4 201520$5.6bnn.a.n.a.
Q1 201619$4.9bnn.a.n.a.
Q2 201618$4.9bnn.a.n.a.
Q3 201620$5.9bnn.a.n.a.
Q4 201624$5.0bnn.a.n.a.
Q1 201721$6.1bnn.a.n.a.
Q2 201719$6.8bnn.a.n.a.
Q3 201719$7.9bnn.a.n.a.
Q4 201723$8.4bnn.a.n.a.
Q1 201827$9.4bnn.a.n.a.
Q2 201824$9.9bnn.a.n.a.
Q3 201821$9.6bnn.a.n.a.
Q4 201818$8.8bnn.a.n.a.
Q1 201920$11.3bnn.a.n.a.
Q2 201924$12.1bnn.a.n.a.
Q3 201925$12.6bnn.a.n.a.
Q4 201921$14.4bnn.a.n.a.
Q1 202026$12.8bnn.a.n.a.
Q2 202028$16.4bnn.a.n.a.
Q3 202030$17.0bnn.a.n.a.
Q4 202021$16.9bnn.a.n.a.
Q1 202117$16.9bnn.a.n.a.
Q2 202116$20.2bnn.a.n.a.
Q3 202125$19.9bnn.a.n.a.
Q4 202125$22.0bnn.a.n.a.
Q1 202222$19.1bnn.a.n.a.
Q2 202219$15.4bnn.a.n.a.
Q3 202221$13.6bnn.a.n.a.
Q4 202217$15.5bnn.a.n.a.
Q1 202320$17.3bnn.a.n.a.
Q2 202325$19.4bnn.a.n.a.
Q3 202321$17.2bnn.a.n.a.
Q4 202321$22.3bn127
Q1 202422$21.9bn1011
Q2 202424$23.6bn139
Q3 202431$26.8bn1513
Q4 202431$25.7bn1116
Q1 202530$25.2bn1513
Q2 202530$26.8bn1413
Q3 202531$26.0bn1514
Q4 202532$27.7bn1726
Q1 202628$23.9bn2024
Q2 202631$24.9bn2120

Compare with…

Holders over time, buyers and sellers, and the managers holding both, side by side for up to four stocks.

MCO and V →MCO and AXP →MCO and BAC →Choose a stock to compare with MCO →

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. It shows no shorts, cash, bonds or performance, and it is never today’s portfolio. Large books are listed to their largest positions, so a manager missing from this table may still hold a small position below that line. These are 95 tracked managers, not the institutional market.

Which funds own MCO, latest filings →Back to the 13F Explorer →