L3VLUP
ProSign in

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 Mar 2026
the date the book describes
Filed
27 Oct 2026
latest of these filings; the earliest 8 May 2026
Managers listing it
40
at least, of 95 tracked, among listed positions
Comparable managers
91
filed both Q4 2025 and Q1 2026; 31 listed it in both
Shares listed
50,814,092
combined, among listed positions
Reported value
$8.8bn
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: 19 buyers (opened or added shares) and 25 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was +121,231.

Managers listing AMT in Q1 2026

Share of 13F value is the position’s reported value over everything the manager reported that quarter. The share change is against Q4 2025, and only where both filings list the position. A rise in value with no rise in shares is the price, not buying.

40 of 40 holders

ActionFiling
Fidelity (FMR LLC)11,317,048$2.0bn0.10%Trimmed-701,79115 May 2026 (the filing on sec.gov)
Invesco Ltd7,275,230$1.3bn0.12%Added+327,04012 May 2026 (the filing on sec.gov)
Capital World Investors5,667,888$978m0.13%Added+1,446,79713 May 2026 (the filing on sec.gov)
T. Rowe Price Associates Inc4,774,353$824m0.10%Trimmed-892,56715 May 2026 (the filing on sec.gov)
Arrowstreet Capital LP4,195,978$724m0.39%Trimmed-73,16614 May 2026 (the filing on sec.gov)
Capital Research Global Investors4,103,353$708m0.11%Added+180,76513 May 2026 (the filing on sec.gov)
Two Sigma Investments LP1,226,889$212m0.17%Added+10,46515 May 2026 (the filing on sec.gov)
Point72 Asset Management LP1,205,312$208m0.27%Added+1,127,46315 May 2026 (the filing on sec.gov)
D. E. Shaw & Co.1,131,650$195m0.12%Trimmed-245,83115 May 2026 (the filing on sec.gov)
Neuberger Berman Group LLC1,068,844$184m0.14%Trimmed-417,76827 Oct 2026 (the filing on sec.gov)
Millennium Management LLC1,021,378$176m0.07%Added+504,71715 May 2026 (the filing on sec.gov)
Citadel Advisors LLC876,763$151munder 0.1%Trimmed-222,89815 May 2026 (the filing on sec.gov)
Man Group PLC826,138$143m0.26%Trimmed-294,62415 May 2026 (the filing on sec.gov)
Voloridge Investment Management LLC791,418$137m0.55%Added+224,53615 May 2026 (the filing on sec.gov)
Marshall Wace LLP751,254$130m0.13%Added+439,84315 May 2026 (the filing on sec.gov)
Wellington Management Group LLP747,735$129munder 0.1%Added+15,84815 May 2026 (the filing on sec.gov)
Acadian Asset Management LLC735,606$127m0.18%Added+45,34413 May 2026 (the filing on sec.gov)
AllianceBernstein LP656,026$115munder 0.1%Added+100,98415 May 2026 (the filing on sec.gov)
AQR Capital Management LLC574,106$98munder 0.1%Trimmed-884,38715 May 2026 (the filing on sec.gov)
Balyasny Asset Management LLC435,448$75m0.10%Added+157,05015 May 2026 (the filing on sec.gov)
MFS Investment Management† Value as filed implies a price far from other filers'.262,526$48munder 0.1%Trimmed-813,34214 May 2026 (the filing on sec.gov)
Verition Fund Management LLC185,666$32m0.21%Added+156,62815 May 2026 (the filing on sec.gov)
Susquehanna International Group LLP159,442$28munder 0.1%Trimmed-18,67515 May 2026 (the filing on sec.gov)
ExodusPoint Capital Management LP119,359$21m0.16%Newnew14 May 2026 (the filing on sec.gov)
Squarepoint Ops LLC112,969$19munder 0.1%Trimmed-159,02715 May 2026 (the filing on sec.gov)
Page 1 of 2

Largest increases and reductions, by shares

Q4 2025 to Q1 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.

New (2)

Exited (4)

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 →