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AMT in the 13F filings

American Tower Corp · CUSIP 03027X100

Sector · Real estateTheme · Real estate investment trusts
Quarter
Q3 2026 · early filersQ2 2026Q1 2026Q4 2025Q3 2025Q2 2025Q1 2025Q4 2024Q3 2024Q2 2024Q1 2024Q4 2023
Quarter end
31 Dec 2025
the date the book describes
Filed
27 Oct 2026
latest of these filings; the earliest 22 Jan 2026
Managers listing it
43
at least, of 95 tracked, among listed positions
Comparable managers
92
filed both Q3 2025 and Q4 2025; 30 listed it in both
Shares listed
51,938,503
combined, among listed positions
Reported value
$9.1bn
combined, at the quarter end

Among the 92 comparable managers: 24 buyers (opened or added shares) and 20 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was +405,047.

Managers listing AMT in Q4 2025

Share of 13F value is the position’s reported value over everything the manager reported that quarter. The share change is against Q3 2025, and only where both filings list the position. A rise in value with no rise in shares is the price, not buying.

43 of 43 holders

ActionFiling
Fidelity (FMR LLC)12,018,839$2.1bn0.11%Trimmed-228,69417 Feb 2026 (the filing on sec.gov)
Invesco Ltd6,948,190$1.2bn0.12%Added+59,55719 Feb 2026 (the filing on sec.gov)
T. Rowe Price Associates Inc5,666,920$995m0.11%Trimmed-530,09517 Feb 2026 (the filing on sec.gov)
Arrowstreet Capital LP4,269,144$750m0.44%Added+1,473,13713 Feb 2026 (the filing on sec.gov)
Capital World Investors4,221,091$741m0.10%Added+12,38211 Feb 2026 (the filing on sec.gov)
Capital Research Global Investors3,922,588$689m0.13%Trimmed-1,002,18311 Feb 2026 (the filing on sec.gov)
Neuberger Berman Group LLC1,486,612$261m0.19%Trimmed-219,66127 Oct 2026 (the filing on sec.gov)
AQR Capital Management LLC1,458,493$256m0.13%Added+1,102,27517 Feb 2026 (the filing on sec.gov)
D. E. Shaw & Co.1,377,481$242m0.13%Added+1,227,41317 Feb 2026 (the filing on sec.gov)
Two Sigma Investments LP1,216,424$214m0.30%Added+411,66317 Feb 2026 (the filing on sec.gov)
Man Group PLC1,120,762$197m0.33%Added+517,71917 Feb 2026 (the filing on sec.gov)
Citadel Advisors LLC1,099,661$193munder 0.1%Added+544,08917 Feb 2026 (the filing on sec.gov)
MFS Investment Management1,075,868$189m0.06%Trimmed-1,943,11122 Jan 2026 (the filing on sec.gov)
Wellington Management Group LLP731,887$128munder 0.1%Trimmed-1,865,77117 Feb 2026 (the filing on sec.gov)
Acadian Asset Management LLC690,262$121m0.20%Added+581,31110 Feb 2026 (the filing on sec.gov)
Voloridge Investment Management LLC566,882$100m0.35%Added+129,11917 Feb 2026 (the filing on sec.gov)
AllianceBernstein LP555,042$97munder 0.1%Added+12,92317 Feb 2026 (the filing on sec.gov)
Millennium Management LLC516,661$91munder 0.1%Added+233,77317 Feb 2026 (the filing on sec.gov)
Two Sigma Advisers LP432,300$76m0.15%Added+219,80017 Feb 2026 (the filing on sec.gov)
Jane Street Group LLC354,536$62munder 0.1%Trimmed-25,38012 Feb 2026 (the filing on sec.gov)
Marshall Wace LLP311,411$55munder 0.1%Newnew13 Feb 2026 (the filing on sec.gov)
Balyasny Asset Management LLC278,398$49m0.06%Newnew17 Feb 2026 (the filing on sec.gov)
Squarepoint Ops LLC271,996$48m0.05%Trimmed-95,09813 Feb 2026 (the filing on sec.gov)
Akre Capital Management LLC255,267$45m0.49%Trimmed-187,57613 Feb 2026 (the filing on sec.gov)
Janus Henderson Group Ltd205,080$36munder 0.1%Trimmed-51,66717 Feb 2026 (the filing on sec.gov)
Page 1 of 2

Largest increases and reductions, by shares

Q3 2025 to Q4 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.

New (4)

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.
28 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.
AMT by quarter
QuarterHoldersReported valueBuyersSellers
Q2 201322$7.6bnn.a.n.a.
Q3 201324$8.5bnn.a.n.a.
Q4 201317$9.1bnn.a.n.a.
Q1 201420$8.9bnn.a.n.a.
Q2 201420$9.3bnn.a.n.a.
Q3 201426$9.3bnn.a.n.a.
Q4 201420$9.0bnn.a.n.a.
Q1 201527$9.1bnn.a.n.a.
Q2 201521$9.5bnn.a.n.a.
Q3 201521$9.2bnn.a.n.a.
Q4 201525$10.2bnn.a.n.a.
Q1 201624$11.0bnn.a.n.a.
Q2 201623$12.5bnn.a.n.a.
Q3 201623$12.1bnn.a.n.a.
Q4 201626$11.5bnn.a.n.a.
Q1 201726$12.8bnn.a.n.a.
Q2 201727$14.7bnn.a.n.a.
Q3 201733$15.0bnn.a.n.a.
Q4 201725$14.7bnn.a.n.a.
Q1 201821$15.3bnn.a.n.a.
Q2 201819$14.5bnn.a.n.a.
Q3 201820$14.4bnn.a.n.a.
Q4 201818$16.0bnn.a.n.a.
Q1 201920$19.8bnn.a.n.a.
Q2 201926$19.4bnn.a.n.a.
Q3 201925$19.3bnn.a.n.a.
Q4 201922$19.2bnn.a.n.a.
Q1 202031$17.5bnn.a.n.a.
Q2 202027$20.0bnn.a.n.a.
Q3 202034$18.1bnn.a.n.a.
Q4 202029$15.3bnn.a.n.a.
Q1 202121$15.3bnn.a.n.a.
Q2 202123$17.2bnn.a.n.a.
Q3 202128$16.9bnn.a.n.a.
Q4 202124$17.1bnn.a.n.a.
Q1 202222$13.4bnn.a.n.a.
Q2 202225$15.2bnn.a.n.a.
Q3 202227$12.7bnn.a.n.a.
Q4 202222$13.0bnn.a.n.a.
Q1 202332$12.6bnn.a.n.a.
Q2 202328$11.7bnn.a.n.a.
Q3 202329$9.5bnn.a.n.a.
Q4 202323$12.8bn717
Q1 202426$11.7bn1511
Q2 202429$11.3bn1714
Q3 202428$14.0bn1611
Q4 202426$11.6bn1413
Q1 202528$13.9bn1513
Q2 202528$13.8bn1810
Q3 202530$9.5bn1615
Q4 202534$9.0bn2420
Q1 202629$8.4bn1925
Q2 202631$8.6bn2318

Compare with…

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

AMT and WELL →AMT and EQIX →AMT and PLD →Choose a stock to compare with AMT →

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