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MGM in the 13F filings

MGM Resorts International · CUSIP 552953101

Q3 2026: 5 of 95 managers have filed so far; the filing deadline is 16 November 2026. Its figures cover those filers only, so it is not yet a picture of the tracked managers.

Quarter end
30 Sep 2026
the date the book describes
Filed
9 Nov 2026
latest of these filings; the earliest 30 Oct 2026
Managers listing it
1
at least, of 95 tracked, among listed positions
Comparable managers
5
filed both Q2 2026 and Q3 2026; 1 listed it in both
Shares listed
87,500
combined, among listed positions
Reported value
$2.7m
combined, at the quarter end

Among the 5 comparable managers: 0 buyers (opened or added shares) and 1 seller (trimmed or exited), at least, among listed positions. Their net change in shares was -456,161.

Managers listing MGM in Q3 2026

Share of 13F value is the position’s reported value over everything the manager reported that quarter. The share change is against Q2 2026, and only where both filings list the position. A rise in value with no rise in shares is the price, not buying.

1 of 1 holder

ActionFiling
Markel Group Inc87,500$2.7munder 0.1%Held030 Oct 2026 (the filing on sec.gov)

Largest increases and reductions, by shares

Q2 2026 to Q3 2026, among managers that listed it in both quarters or opened it.

Increases

No increase among listed positions.

Reductions

No reduction among listed positions.

New positions and exits

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

New (0)

No new position among listed positions.

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.
12 in Q4 2024 to 1 in Q3 2026

Tracked managers listing it, at least.

01020302014201620182020202220242026
the quarter shown share split complete books; unmarked quarters rest on listed positionsClick a quarter to open it.
MGM by quarter
QuarterHoldersReported valueBuyersSellers
Q2 20137$796mn.a.n.a.
Q3 201311$1.3bnn.a.n.a.
Q4 201311$1.9bnn.a.n.a.
Q1 201417$2.9bnn.a.n.a.
Q2 201413$2.9bnn.a.n.a.
Q3 201411$2.7bnn.a.n.a.
Q4 201413$3.0bnn.a.n.a.
Q1 201512$3.0bnn.a.n.a.
Q2 201511$2.7bnn.a.n.a.
Q3 20159$2.5bnn.a.n.a.
Q4 201513$3.2bnn.a.n.a.
Q1 201615$3.1bnn.a.n.a.
Q2 201619$3.2bnn.a.n.a.
Q3 201620$4.1bnn.a.n.a.
Q4 201622$4.4bnn.a.n.a.
Q1 201719$3.9bnn.a.n.a.
Q2 201723$4.6bnn.a.n.a.
Q3 201715$4.1bnn.a.n.a.
Q4 201721$4.5bnn.a.n.a.
Q1 201820$5.1bnn.a.n.a.
Q2 201814$3.3bnn.a.n.a.
Q3 201812$3.0bnn.a.n.a.
Q4 201813$2.7bnn.a.n.a.
Q1 201914$3.2bnn.a.n.a.
Q2 201912$3.8bnn.a.n.a.
Q3 201920$4.0bnn.a.n.a.
Q4 201918$4.3bnn.a.n.a.
Q1 202016$894mn.a.n.a.
Q2 202010$978mn.a.n.a.
Q3 20207$1.3bnn.a.n.a.
Q4 202011$1.9bnn.a.n.a.
Q1 202114$1.5bnn.a.n.a.
Q2 202116$1.6bnn.a.n.a.
Q3 202114$1.7bnn.a.n.a.
Q4 202113$1.8bnn.a.n.a.
Q1 202216$1.6bnn.a.n.a.
Q2 202212$870mn.a.n.a.
Q3 202214$512mn.a.n.a.
Q4 202212$477mn.a.n.a.
Q1 202312$695mn.a.n.a.
Q2 20238$333mn.a.n.a.
Q3 202311$442mn.a.n.a.
Q4 20237$545m45
Q1 20247$564m63
Q2 202410$817m72
Q3 202412$598m94
Q4 202412$550m102
Q1 202510$355m66
Q2 202513$528m85
Q3 202510$677m57
Q4 20258$647m1320
Q1 20269$457m1120
Q2 202610$422m1918
Q3 20261$2.7m01

Compare with…

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

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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 MGM, latest filings →Back to the 13F Explorer →