AMT American Tower Corp.

NYSE
$176.94

American Tower Corp. (AMT) Institutional Ownership

What the institutions did with AMT last quarter, from their 13F filings. Counting managers rather than shares is the point: a single index fund adding to a position tells you far less than four hundred separate managers all deciding to. Positions as reported for the quarter ended June 30, 2026.

Managers compared
1,877
filed both this quarter and last
Managers holding
1,727
+3 on the quarter
Buyers
841
153 opened new
Sellers
816
150 sold out entirely
Buyer share
50.8%
of managers who traded it
Breadth
+1.5
net buyers, as a share of those trading

Every manager below opens. Subscribers can see any firm's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.

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Ownership map

Each block is one manager, sized by shares held and colored by how much they moved the position last quarter. Green added, red cut, grey stood pat.

Cut Unchanged Added Color saturates at ±50%.

Largest holders

Manager Shares % of reported
BlackRock, Inc. 45.8M 10.4%
VANGUARD CAPITAL MANAGEMENT LLC 30.4M 6.9%
VANGUARD PORTFOLIO MANAGEMENT LLC 27.9M 6.3%
STATE STREET CORP 22.1M 5.0%
GEODE CAPITAL MANAGEMENT, LLC 13.8M 3.1%
COHEN & STEERS, INC. 13.8M 3.1%
FMR LLC 11.4M 2.6%
MORGAN STANLEY 9.6M 2.2%
JPMORGAN CHASE & CO 8.9M 2.0%
LAZARD ASSET MANAGEMENT LLC 8.4M 1.9%
Invesco Ltd. 7.1M 1.6%
DEUTSCHE BANK AG\ 6.7M 1.5%
Capital World Investors 6.6M 1.5%
NORGES BANK 6.4M 1.4%
DIMENSIONAL FUND ADVISORS LP 5.9M 1.3%
PRINCIPAL FINANCIAL GROUP INC 5.7M 1.3%
CHARLES SCHWAB INVESTMENT MANAGEMENT INC 5.6M 1.3%
NORTHERN TRUST CORP 5.0M 1.1%
GOLDMAN SACHS GROUP INC 5.0M 1.1%
Legal & General Group Plc 4.9M 1.1%
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP 4.6M 1.0%
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 4.5M 1.0%
PRICE T ROWE ASSOCIATES INC /MD/ 4.2M 1.0%
Amundi 4.0M 0.9%
BANK OF AMERICA CORP /DE/ 3.9M 0.9%

Largest changes

Manager Action Previous Current Change
JPMORGAN CHASE & CO Reduced 15.1M 8.9M -6.3M
AQR CAPITAL MANAGEMENT LLC Increased 574.1K 2.5M +1.9M
ONTARIO TEACHERS PENSION PLAN BOARD New 0 1.8M +1.8M
Cantillon Capital Management LLC Sold Out 1.6M 0 -1.6M
JANE STREET GROUP, LLC Increased 63.1K 1.5M +1.5M
Nuveen, LLC Reduced 3.9M 2.6M -1.3M
Capital Research Global Investors Reduced 4.1M 2.9M -1.2M
MILLENNIUM MANAGEMENT LLC Increased 1.0M 2.2M +1.2M
COHEN & STEERS, INC. Increased 12.6M 13.8M +1.2M
Qube Research & Technologies Ltd Increased 15.9K 1.2M +1.1M
LAZARD ASSET MANAGEMENT LLC Increased 7.3M 8.4M +1.1M
DEUTSCHE BANK AG\ Reduced 7.8M 6.7M -1.1M
FRANKLIN RESOURCES INC Reduced 3.3M 2.4M -925.2K
Fisher Asset Management, LLC Reduced 1.7M 828.6K -907.8K
Capital World Investors Increased 5.7M 6.6M +887.0K
BlackRock, Inc. Increased 45.0M 45.8M +842.4K
TWO SIGMA INVESTMENTS, LP Reduced 1.2M 431.9K -795.0K
STATE STREET CORP Increased 21.4M 22.1M +631.6K
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. Increased 1.2M 1.8M +623.7K
ACADIAN ASSET MANAGEMENT LLC Reduced 735.6K 124.2K -611.4K
Altshuler Shaham Ltd New 0 610.0K +610.0K
BANK OF AMERICA CORP /DE/ Reduced 4.5M 3.9M -606.1K
CANADA PENSION PLAN INVESTMENT BOARD Reduced 2.4M 1.8M -605.3K
MARSHALL WACE, LLP Increased 751.3K 1.3M +591.7K
BNP PARIBAS ASSET MANAGEMENT Holding S.A. Increased 783.6K 1.4M +585.2K
Rathbones Group PLC Reduced 1.0M 459.7K -565.1K
PRICE T ROWE ASSOCIATES INC /MD/ Reduced 4.8M 4.2M -563.1K
GRS Advisors, LLC New 0 543.6K +543.6K
Alyeska Investment Group, L.P. Increased 303.8K 828.4K +524.6K
DigitalBridge Group, Inc. New 0 504.8K +504.8K
CITADEL ADVISORS LLC Increased 876.8K 1.4M +494.5K
ROYAL BANK OF CANADA Increased 1.6M 2.1M +485.6K
BARROW HANLEY MEWHINNEY & STRAUSS LLC Increased 1.6M 2.1M +471.6K
Swedbank AB Reduced 953.6K 489.6K -464.0K
MANUFACTURERS LIFE INSURANCE COMPANY, THE Reduced 2.3M 1.9M -443.9K
WORLDQUANT MILLENNIUM ADVISORS LLC Increased 138.9K 578.1K +439.2K
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP Increased 4.2M 4.6M +407.2K
Vontobel Holding Ltd. Reduced 478.7K 72.4K -406.3K
RUSH ISLAND MANAGEMENT, LP New 0 405.4K +405.4K
Douglass Winthrop Advisors, LLC Reduced 502.9K 117.4K -385.6K
CHARLES SCHWAB INVESTMENT MANAGEMENT INC Increased 5.2M 5.6M +367.1K
Point72 Asset Management, L.P. Reduced 1.2M 853.7K -351.6K
CBRE INVESTMENT MANAGEMENT LISTED REAL ASSETS LLC Increased 1.1M 1.5M +348.5K
NORTHERN TRUST CORP Reduced 5.3M 5.0M -316.2K
VOLORIDGE INVESTMENT MANAGEMENT, LLC Reduced 791.4K 480.5K -310.9K
Heard Capital LLC Reduced 1.1M 804.8K -307.3K
AMERIPRISE FINANCIAL INC Reduced 3.3M 3.0M -304.8K
BOOTHBAY FUND MANAGEMENT, LLC Increased 1.2K 285.5K +284.2K
Bank of New York Mellon Corp Increased 2.8M 3.1M +283.4K
Ardmore Road Asset Management LP New 0 282.5K +282.5K
Allianz Asset Management GmbH Reduced 760.7K 482.2K -278.5K
Lansforsakringar Fondforvaltning AB (publ) Reduced 407.6K 145.7K -261.9K
GOLDMAN SACHS GROUP INC Increased 4.7M 5.0M +261.0K
VANGUARD PORTFOLIO MANAGEMENT LLC Increased 27.6M 27.9M +255.7K
Holocene Advisors, LP Increased 29.9K 281.1K +251.3K
HSBC HOLDINGS PLC Increased 1.6M 1.8M +248.5K
Korea Investment CORP Increased 190.1K 438.1K +248.0K
SG Americas Securities, LLC Reduced 1.4M 1.1M -241.8K
UBS Group AG Reduced 3.5M 3.3M -234.7K
Mitsubishi UFJ Trust & Banking Corp Reduced 513.7K 281.8K -231.9K

13F filings are due 45 days after quarter end and cover long positions in U.S.-listed equities only, so this is a lagged and partial picture: shorts, bonds and foreign listings never appear. Options positions are excluded here rather than folded into the share counts. Political ownership is coming.