L3VLUP
Quarter end
31 Dec 2023
the date the book describes
Filed
5 Nov 2026
latest of these filings; the earliest 26 Jan 2024
Managers listing it
21
at least, of 95 tracked, among listed positions
Comparable managers
93
filed both Q3 2023 and Q4 2023; 18 listed it in both
Shares listed
57,058,400
combined, among listed positions
Reported value
$22.3bn
combined, at the quarter end

Among the 93 comparable managers: 12 buyers (opened or added shares) and 7 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 Q4 2023

Share of 13F value is the position’s reported value over everything the manager reported that quarter. The share change is against Q3 2023, and only where both filings list the position. A rise in value with no rise in shares is the price, not buying.

21 of 21 holders

ActionFiling
Berkshire Hathaway Inc24,669,778$9.6bn2.74%Held014 Feb 2024 (the filing on sec.gov)
TCI Fund Management Ltd12,049,611$4.7bn13.08%Added+1,678,59414 Feb 2024 (the filing on sec.gov)
Fidelity (FMR LLC)5,419,700$2.1bn0.16%Added+1,118,4475 Nov 2026 (the filing on sec.gov)
Akre Capital Management LLC4,776,940$1.9bn15.70%Trimmed-317,7069 Feb 2024 (the filing on sec.gov)
Baillie Gifford & Co3,638,551$1.4bn1.13%Trimmed-153,12126 Jan 2024 (the filing on sec.gov)
MFS Investment Management1,249,725$488m0.16%Added+122,1728 Feb 2024 (the filing on sec.gov)
Capital World Investors1,243,738$486m0.09%Added+13,09813 Feb 2024 (the filing on sec.gov)
Invesco Ltd874,589$342m0.08%Added+48,59213 Feb 2024 (the filing on sec.gov)
Harris Associates LP814,344$318m0.55%Trimmed-72,61314 Feb 2024 (the filing on sec.gov)
Neuberger Berman Group LLC806,599$315m0.27%Trimmed-15,20314 Nov 2024 (the filing on sec.gov)
T. Rowe Price Associates Inc415,497$162munder 0.1%Trimmed-227,77216 Feb 2024 (the filing on sec.gov)
Two Sigma Investments LP315,688$123m0.28%Added+160,92914 Feb 2024 (the filing on sec.gov)
Markel Group Inc213,890$84m0.91%Held02 Feb 2024 (the filing on sec.gov)
Two Sigma Advisers LP213,700$83m0.20%Added+119,00014 Feb 2024 (the filing on sec.gov)
AllianceBernstein LP186,193$73munder 0.1%Trimmedn.a.14 Feb 2024 (the filing on sec.gov)
Acadian Asset Management LLC70,590$28m0.11%Added+26,46713 Feb 2024 (the filing on sec.gov)
Tudor Investment Corp51,129$20m0.16%Addedn.a.14 Feb 2024 (the filing on sec.gov)
Voloridge Investment Management LLC40,422$16m0.06%Added+8,66014 Feb 2024 (the filing on sec.gov)
Brevan Howard Capital Management LP4,781$1.9munder 0.1%Added+3,19214 Feb 2024 (the filing on sec.gov)
Dodge & Cox1,702$665kunder 0.1%Held022 Feb 2024 (the filing on sec.gov)
Maverick Capital Ltd1,233$482kunder 0.1%Newnew14 Feb 2024 (the filing on sec.gov)

Largest increases and reductions, by shares

Q3 2023 to Q4 2023, 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.

Exited (1)

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 →