L3VLUP
Quarter end
30 Jun 2026
the date the book describes
Filed
27 Oct 2026
latest of these filings; the earliest 21 Jul 2026
Managers listing it
46
at least, of 95 tracked, among listed positions
Comparable managers
91
filed both Q1 2026 and Q2 2026; 27 listed it in both
Shares listed
55,472,732
combined, among listed positions
Reported value
$25.1bn
combined, at the quarter end

1 line marked †. Value as filed implies a price far from other filers'. Each counts in holders and value as filed, and is left out of the net change in shares.

AllianceBernstein LP. Values in this filing are at the previous quarter end's prices; its share count is the quarter end's.

Among the 91 comparable managers: 21 buyers (opened or added shares) and 20 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was +528,964.

Managers listing MCO in Q2 2026

Share of 13F value is the position’s reported value over everything the manager reported that quarter. The share change is against Q1 2026, and only where both filings list the position. A rise in value with no rise in shares is the price, not buying.

46 of 46 holders

ActionFiling
Berkshire Hathaway Inc24,669,778$11.2bn3.73%Held014 Aug 2026 (the filing on sec.gov)
TCI Fund Management Ltd14,334,027$6.5bn12.30%Held014 Aug 2026 (the filing on sec.gov)
Fidelity (FMR LLC)4,985,040$2.3bn0.10%Trimmed-1,71213 Aug 2026 (the filing on sec.gov)
Egerton Capital UK LLP1,704,229$772m7.46%Added+158,55921 Jul 2026 (the filing on sec.gov)
T. Rowe Price Associates Inc1,545,468$700m0.07%Trimmed-285,29014 Aug 2026 (the filing on sec.gov)
MFS Investment Management† Value as filed implies a price far from other filers'.1,186,385$566m0.18%Trimmed-141,6273 Aug 2026 (the filing on sec.gov)
Invesco Ltd1,201,752$544munder 0.1%Added+172,66114 Aug 2026 (the filing on sec.gov)
Akre Capital Management LLC1,156,893$524m10.23%Trimmed-89,22114 Aug 2026 (the filing on sec.gov)
AQR Capital Management LLC1,045,155$471m0.16%Added+594,06514 Aug 2026 (the filing on sec.gov)
Baillie Gifford & Co717,871$325m0.29%Trimmed-46,3956 Aug 2026 (the filing on sec.gov)
Neuberger Berman Group LLC677,875$307m0.20%Trimmed-3,05227 Oct 2026 (the filing on sec.gov)
D. E. Shaw & Co.369,114$167m0.08%Added+120,68314 Aug 2026 (the filing on sec.gov)
Markel Group Inc213,890$97m0.74%Held031 Jul 2026 (the filing on sec.gov)
Holocene Advisors LP208,079$94m0.21%Added+147,15514 Aug 2026 (the filing on sec.gov)
Millennium Management LLC161,259$73munder 0.1%Added+151,84314 Aug 2026 (the filing on sec.gov)
Freestone Grove Partners LP157,074$71m0.46%Newnew14 Aug 2026 (the filing on sec.gov)
Arrowstreet Capital LP151,129$68munder 0.1%Trimmed-87,10513 Aug 2026 (the filing on sec.gov)
AllianceBernstein LP151,630$66munder 0.1%Trimmed-10,22414 Aug 2026 (the filing on sec.gov)
Squarepoint Ops LLC103,385$47m0.05%Added+83,12114 Aug 2026 (the filing on sec.gov)
Renaissance Technologies LLC98,800$45m0.06%Trimmed-13,28013 Aug 2026 (the filing on sec.gov)
Balyasny Asset Management LLC84,825$38munder 0.1%Added+82,33514 Aug 2026 (the filing on sec.gov)
Citadel Advisors LLC64,798$29munder 0.1%Trimmed-16,7182 Sep 2026 (the filing on sec.gov)
Susquehanna International Group LLP58,735$27munder 0.1%Added+41,54514 Aug 2026 (the filing on sec.gov)
Wellington Management Group LLP52,452$24munder 0.1%Added+3,48014 Aug 2026 (the filing on sec.gov)
Voloridge Investment Management LLC41,602$19m0.08%Trimmed-255,76814 Aug 2026 (the filing on sec.gov)
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Largest increases and reductions, by shares

Q1 2026 to Q2 2026, 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 →