American Tower

AMT • NYSE

American Tower is a reit - specialty company in the real estate sector on NYSE, led by Steven O. Vondran, with a market cap of $85.0B. As of Q3 2025, 91% of shares are held by 1,735 institutional investors, with VANGUARD GROUP INC as the largest holder at 13.59%.

CEOSteven O. Vondran

Market Cap$85.0B

REIT - Specialty

Real Estate

Employees5.6K

Websiteamericantower.com

Country

United States of America

Overview

Overview of institutional ownership in AMT as of Q3 2025 with a market cap of $90.1B

All Institutions

Institutions: 1,735
Value Held: $82.0B
Shares Held: 426.7M
Avg Position: $47.3M
Median Position: $1.0M

Hedge Funds

Hedge Funds: 85
Value Held: $2.7B
Shares Held: 14.0M
Avg Position: $31.8M
Median Position: $5.7M

Ownership Breakdown

Institutional (non-HF)

88.1%

$79.3B

Hedge Funds

3.0%

$2.7B

Retail & Other

8.91%

$8.0B

Based on market cap of $90.1B as of Q3 2025. Institutional (non-HF) excludes hedge funds to avoid double counting.

Biggest Investors

Institutions with the largest positions in AMT as of Q3 2025

Institution	Key People	Position Value	Ownership	Owned Since	Total AUM (Long)
VANGUARD GROUP INC Institution	Salim Ramji CEO	$12.2B 0.18% of portfolio	13.59% 63.6M shares	≤ Q2 2013 Held for 12y 6m+	$6.69T
BlackRock, Inc. Institution	Laurence D. Fink CEO	$8.7B 0.15% of portfolio	9.70% 45.4M shares	≤ Q2 2013 Held for 12y 6m+	$5.67T
STATE STREET CORP Institution	Ronald P. O'Hanley CEO	$4.1B 0.14% of portfolio	4.47% 20.9M shares	≤ Q2 2013 Held for 12y 6m+	$2.88T
JPMORGAN CHASE & CO Institution	Jamie Dimon CEO	$3.0B 0.19% of portfolio	3.28% 15.4M shares	≤ Q2 2013 Held for 12y 6m+	$1.56T
COHEN & STEERS INC Institution	Joseph M. Harvey CEO	$2.6B 4.75% of portfolio	2.88% 13.5M shares	≤ Q2 2013 Held for 12y 6m+	$54.7B
GEODE CAPITAL MANAGEMENT LLC ETF Provider	David Kenneth Lane CEO	$2.5B 0.16% of portfolio	2.83% 13.3M shares	≤ Q2 2013 Held for 12y 6m+	$1.57T
FMR LLC Institution	-	$2.4B 0.12% of portfolio	2.62% 12.2M shares	≤ Q2 2013 Held for 12y 6m+	$1.92T
MORGAN STANLEY RIA/Wealth	Jed Finn CEO	$1.9B 0.12% of portfolio	2.14% 10.0M shares	≤ Q2 2013 Held for 12y 6m+	$1.65T
$DEUTSCHE BANK AG\ logo$ DEUTSCHE BANK AG\ Institution	Kevin G. Burke CEO	$1.4B 0.49% of portfolio	1.61% 7.5M shares	Q4 2013 Held for 12 years	$298.07B
Invesco Ltd. ETF Provider	Brian Christopher Hartigan CEO	$1.3B 0.21% of portfolio	1.47% 6.9M shares	≤ Q2 2013 Held for 12y 6m+	$633.08B

Net Capital Flow

Institutional buying and selling activity for AMT in Q3 2025

Traded: −$213.5M
Buyers: 757
Sellers: 887
Total Bought: +$5.2B
Total Sold: −$5.4B
Avg Position: $43.3M

Biggest Buyers

Institution	Net Bought	Current Position
LAZARD ASSET MANAGEMENT LLC Long Only Manager	+$817.4M +4.3M shares	$858.6M 4.5M shares
JPMORGAN CHASE & CO Institution	+$521.7M +2.7M shares	$3.0B 15.4M shares
BARROW HANLEY MEWHINNEY & STRAUSS LLC Long Only Manager	+$305.9M +1.6M shares	$305.9M 1.6M shares
MORGAN STANLEY RIA/Wealth	+$160.9M +836.6K shares	$1.9B 10.0M shares
BARCLAYS PLC Institution	+$143.1M +744.0K shares	$304.7M 1.6M shares
B BNP PARIBAS ARBITRAGE, SA Institution	+$142.8M +742.4K shares	$228.4M 1.2M shares
ARROWSTREET CAPITAL LIMITED PARTNERSHIP Hedge Fund•Quant	+$139.3M +724.5K shares	$537.7M 2.8M shares
TWO SIGMA INVESTMENTS LLC Hedge Fund•Multi-Strategy	+$136.2M +708.2K shares	$154.8M 804.8K shares
VANGUARD GROUP INC Institution	+$117.7M +611.8K shares	$12.2B 63.6M shares
CITADEL ADVISORS LLC Hedge Fund•Multi-Strategy	+$106.8M +555.6K shares	$106.8M 555.6K shares

Biggest Sellers

Institution	Net Sold	Current Position
WELLINGTON MANAGEMENT CO LLP Long Only Manager	−$955.5M −5.0M shares	$499.6M 2.6M shares
VIKING GLOBAL INVESTORS LP Hedge Fund•Long/Short	−$618.2M −2.8M shares	Sold Off 0 shares
HENDERSON GROUP PLC Institution	−$348.5M −1.8M shares	$49.4M 256.7K shares
PRICE T ROWE ASSOCIATES INC /MD/ Long Only Manager	−$274.9M −1.4M shares	$1.2B 6.2M shares
FMR LLC Institution	−$258.1M −1.3M shares	$2.4B 12.2M shares
UBS GLOBAL ASSET MANAGEMENT AMERICAS INC Long Only Manager	−$218.9M −1.1M shares	$852.1M 4.4M shares
ALLIANCEBERNSTEIN L.P. Long Only Manager	−$187.1M −972.8K shares	$104.3M 542.1K shares
A Amundi Institution	−$156.9M −842.6K shares	$394.3M 2.1M shares
MASSACHUSETTS FINANCIAL SERVICES CO /MA/ Long Only Manager	−$112.7M −586.1K shares	$580.6M 3.0M shares
Marshall Wace LLP Institution	−$112.6M −509.6K shares	Sold Off 0 shares

Entry and Exit Activity

Institutions that initiated new positions or completely exited AMT in Q3 2025

New Positions: 38
New Value: $392.4M
Exited Positions: 161
Exited Value: $1.2B

New Positions

Institution	Position Value
BARROW HANLEY MEWHINNEY & STRAUSS LLC Long Only Manager	$305.9M 1.6M shares
A ANTIPODES PARTNERS Ltd Hedge Fund•Long/Short	$68.2M 354.6K shares
B BLI - Banque de Luxembourg Investments Institution	$5.0M 25.5K shares
ROCKLAND TRUST CO Private Equity	$2.3M 11.9K shares
T TEMA ETFS LLC Institution	$1.5M 7.9K shares
F Farringdon Capital, Ltd. Institution	$1.3M 6.8K shares
Portfolio Design Labs, LLC RIA/Wealth	$1.2M 6.1K shares
Berman McAleer LLC RIA/Wealth	$825.4K 4.3K shares
P Polymer Capital Management LLC Hedge Fund•Multi-Strategy	$722.2K 3.8K shares
Vista Cima Wealth Management LLC RIA/Wealth	$600.2K 3.1K shares

Exited Positions

Institution	Previous Position
VIKING GLOBAL INVESTORS LP Hedge Fund•Long/Short	$618.2M 2.8M shares
Marshall Wace LLP Institution	$112.6M 509.6K shares
BALYASNY ASSET MANAGEMENT LLC Hedge Fund•Multi-Strategy	$89.8M 406.5K shares
Oribel Capital Management, LP Hedge Fund•Long/Short	$76.0M 343.9K shares
A AXA Institution	$67.7M 306.2K shares
ATALANTA SOSNOFF CAPITAL, LLC RIA/Wealth	$40.8M 184.6K shares
M Mediolanum International Funds Ltd Institution	$27.1M 124.5K shares
A ADAMS EXPRESS CO Long Only Manager	$20.2M 91.2K shares
Land & Buildings Investment Management, LLC Hedge Fund•Activist	$17.4M 78.5K shares
Generate Investment Management Ltd Hedge Fund•Credit Arb	$16.9M 76.5K shares

Options Activity

Institutions with the largest Call and Put options positions in AMT as of Q3 2025

Call Positions: 44
Call Value: $590.2M
Put Positions: 40
Put Value: $289.2M

Call Positions

Institution	Position Value
SUSQUEHANNA INTERNATIONAL GROUP, LLP Private Equity	$134.4M 7.0K contracts
J JANE STREET GROUP, LLC Institution	$87.2M 4.5K contracts
P Parallax Volatility Advisers, LLC Hedge Fund•Vol Arbitrage	$73.2M 3.8K contracts
CITADEL ADVISORS LLC Hedge Fund•Multi-Strategy	$60.9M 3.2K contracts
T Twin Tree Management, LP Hedge Fund•Vol Arbitrage	$44.6M 2.3K contracts
MILLENNIUM MANAGEMENT LLC Hedge Fund•Multi-Strategy	$25.0M 1.3K contracts
W WOLVERINE TRADING, LLC Institution	$22.9M 1.2K contracts
B BNP PARIBAS ARBITRAGE, SA Institution	$20.3M 10.6 contracts
CAPITAL FUND MANAGEMENT S.A. Hedge Fund•Quant Macro	$15.3M 793.0 contracts
Walleye Trading LLC RIA/Wealth	$14.2M 736.0 contracts

Put Positions

Institution	Position Value
SUSQUEHANNA INTERNATIONAL GROUP, LLP Private Equity	$75.9M 3.9K contracts
CITADEL ADVISORS LLC Hedge Fund•Multi-Strategy	$50.7M 2.6K contracts
J JANE STREET GROUP, LLC Institution	$12.6M 655.0 contracts
W WOLVERINE TRADING, LLC Institution	$10.6M 543.0 contracts
B BNP PARIBAS ARBITRAGE, SA Institution	$10.4M 5.4 contracts
D D. E. Shaw & Co., Inc. Institution	$9.9M 517.0 contracts
CAPITAL FUND MANAGEMENT S.A. Hedge Fund•Quant Macro	$9.9M 513.0 contracts
BARCLAYS PLC Institution	$9.6M 500.0 contracts
Q Qube Research & Technologies Ltd Institution	$9.5M 493.0 contracts
CITIGROUP INC Institution	$8.1M 420.0 contracts

Most Committed Institutions

Institutions with AMT as the highest % of their portfolio as of Q3 2025

Institution	Key People	Portfolio Weight	Ownership	Owned Since	Total AUM (Long)
B B&I Capital AG Institution	-	12.03% $34.8M	0.04% 180.8K shares	Q4 2024 Held for 1 year	$288.9M
Rockbridge Capital Management LLC Hedge Fund•Long/Short	Peter Creighton Keefe Managing Partner	10.21% $17.3M	0.02% 90.2K shares	Q4 2024 Held for 1 year	$169.8M
LDR Capital Management LLC Hedge Fund•Sector	Lawrence David Raiman CIO	10.14% $3.7M	0.00% 19.4K shares	Q3 2023 Held for 2y 3m	$36.7M
Heard Capital LLC Hedge Fund•Long/Short	William Ellak Heard CEO	9.48% $195.5M	0.22% 1.0M shares	Q4 2019 Held for 6 years	$2.1B
AVENIR CORP Long Only Manager	Charles Green Mackall Chairman	8.40% $80.7M	0.09% 419.5K shares	≤ Q2 2013 Held for 12y 6m+	$960.1M
American Assets Capital Advisers Real Assets	Burland Bland East CEO	6.74% $6.4M	0.01% 33.2K shares	Q4 2014 Held for 11 years	$94.7M
Vert Asset Management LLC Institution	Samuel Chase Adams Managing Partner	6.67% $19.8M	0.02% 103.1K shares	Q4 2021 Held for 4 years	$297.4M
Uniplan Investment Counsel, Inc. RIA/Wealth	Kris Hunter Jamison CEO	4.91% $48.3M	0.05% 251.4K shares	Q3 2015 Held for 10y 3m	$983.7M
COHEN & STEERS INC Institution	Joseph M. Harvey CEO	4.75% $2.6B	2.88% 13.5M shares	≤ Q2 2013 Held for 12y 6m+	$54.7B
MEKETA INVESTMENT GROUP INC /ADV Fund of Funds	Peter Scott Woolley CEO	4.49% $1.4M	0.00% 7.1K shares	Q4 2024 Held for 1 year	$30.5M

Hedge Fund Spotlight

Discover hedge funds investing in AMT

Benchstone Capital Management LP

Hedge Fund • Long/Short

Portfolio ManagerChristopher Morgan Leff

Portfolio Value: $733.3M
Positions: 27
Last Reported: Q3 2025

Sector Allocation

Position in American Tower

Market Value: $29.9M
Shares Held: 155.6K
Portfolio Weight: 4.08%
Owned Since: 2024-Q4

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