What does CUSIP 03027X100 represent in this 13F holders report?

CUSIP 03027X100 is the security identifier for AMT - AMERICAN TOWER CORP /MA/ - Common Stock used to aggregate holder disclosures.

How many institutions held AMT - AMERICAN TOWER CORP /MA/ - Common Stock in Q3 2017?

954 institutional investors reported AMT - AMERICAN TOWER CORP /MA/ - Common Stock for Q3 2017. Use the holders table for investor-level position and value details.

- Common Stock (AMT)

CUSIP: 03027X100

Q3 2017 13F Holders as of 30 Sep 2017

Type / Class: Equity / Common Stock
Shares outstanding: 466,215,331
Total 13F shares: 394,336,677
Share change: -2,416,940
Total reported value: $53,891,565,198
Put/Call ratio: 121%
Price per share: $136.68
Number of holders: 954
Value change: -$308,808,763
Number of buys: 446
Number of sells: 404

Quarterly Holders Quick Answers

What is CUSIP 03027X100?
CUSIP 03027X100 identifies AMT - AMERICAN TOWER CORP /MA/ - Common Stock in SEC institutional holdings data.

Need full ownership history?
Open the full security ownership history page.

Next holder-history checks

These links keep the next click tied to holder verification, nearby quarters, or outside-13F ownership context.

Back to full security ownership history for the broader multi-quarter picture.
Latest 13F filings for newly reported positions across managers.
Latest Schedule 13D/13G reports for ownership changes outside the 13F cadence.
SEC investors directory for manager drilldown.

Explore More Reporting Periods

Jump to adjacent filing periods for faster comparison and easier crawl discovery.

Newer quarter: Q4 2017
Previous quarter: Q2 2017

Recent filing periods for CUSIP 03027X100:

Q1 2026 Q4 2025 Q3 2025 Q2 2025 Q1 2025 Q4 2024 Q3 2024 Q2 2024

Top shareholders of AMT - AMERICAN TOWER CORP /MA/ - Common Stock (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Ownership % is shown only when it is directly reported or safely comparable across share classes.

Methodology: rows are grouped by holder and ranked by the holder's primary source value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

Holder	Source	Role / Reporting	Ownership %	Shares	Holdings Value	12M Net Δ	As of	Details
VANGUARD GROUP INC	13F	Company	6.1%	28,442,502	$3,763,512,000	—	30 Jun 2017	13F
BlackRock Finance, Inc.	13F	Company	5.6%	26,009,209	$3,441,539,000	—	30 Jun 2017	13F
PRICE T ROWE ASSOCIATES INC /MD/	13F	Company	5.5%	25,545,929	$3,380,237,000	—	30 Jun 2017	13F
WELLINGTON MANAGEMENT GROUP LLP	13F	Company	4.7%	21,838,525	$2,889,674,000	—	30 Jun 2017	13F
STATE STREET CORP	13F	Company	4%	18,508,144	$2,450,157,000	—	30 Jun 2017	13F
FMR LLC	13F	Company	3.6%	16,866,555	$2,231,783,000	—	30 Jun 2017	13F
MASSACHUSETTS FINANCIAL SERVICES CO /MA/	13F	Company	1.9%	8,688,524	$1,149,665,000	—	30 Jun 2017	13F
GOLDMAN SACHS GROUP INC	13F	Company	1.7%	8,013,866	$1,060,395,000	—	30 Jun 2017	13F
Capital World Investors	13F	Company	1.6%	7,534,722	$996,994,000	—	30 Jun 2017	13F
JANUS HENDERSON GROUP PLC	13F	Company	1.6%	7,468,416	$988,214,000	—	30 Jun 2017	13F
AMERIPRISE FINANCIAL INC	13F	Company	1.6%	7,294,220	$965,183,000	—	30 Jun 2017	13F
BANK OF AMERICA CORP /DE/	13F	Company	1.5%	6,998,124	$925,992,000	—	30 Jun 2017	13F
AKRE CAPITAL MANAGEMENT LLC	13F	Company	1.5%	6,810,903	$901,219,000	—	30 Jun 2017	13F
NORTHERN TRUST CORP	13F	Company	1.4%	6,566,346	$868,858,000	—	30 Jun 2017	13F
EDGEWOOD MANAGEMENT LLC	13F	Company	1.3%	6,227,665	$824,045,000	—	30 Jun 2017	13F
DEUTSCHE BANK AG\	13F	Company	1.1%	4,901,327	$648,536,000	—	30 Jun 2017	13F
Invesco Ltd.	13F	Company	1%	4,837,538	$640,103,000	—	30 Jun 2017	13F
abrdn Investment Management Ltd	13F	Company	0.94%	4,369,326	$578,084,000	—	30 Jun 2017	13F
Clearbridge Investments, LLC	13F	Company	0.91%	4,255,945	$563,147,000	—	30 Jun 2017	13F
WELLS FARGO & COMPANY/MN	13F	Company	0.88%	4,111,830	$544,077,000	—	30 Jun 2017	13F
Bank of New York Mellon Corp	13F	Company	0.84%	3,937,195	$520,969,000	—	30 Jun 2017	13F
GEODE CAPITAL MANAGEMENT, LLC	13F	Company	0.82%	3,819,056	$504,376,000	—	30 Jun 2017	13F
UBS Group AG	13F	Company	0.78%	3,639,659	$481,600,000	—	30 Jun 2017	13F
AMERICAN CENTURY COMPANIES INC	13F	Company	0.71%	3,324,964	$439,959,000	—	30 Jun 2017	13F
FRANKLIN RESOURCES INC	13F	Company	0.67%	3,138,524	$415,289,000	—	30 Jun 2017	13F
COHEN & STEERS, INC.	13F	Company	0.65%	3,008,774	$398,121,000	—	30 Jun 2017	13F
PRINCIPAL FINANCIAL GROUP INC	13F	Company	0.64%	2,997,688	$396,655,000	—	30 Jun 2017	13F
MORGAN STANLEY	13F	Company	0.64%	2,987,585	$395,319,000	—	30 Jun 2017	13F
NORGES BANK	13F	Company	0.64%	2,987,030	$395,244,000	—	30 Jun 2017	13F
MANUFACTURERS LIFE INSURANCE COMPANY, THE	13F	Company	0.62%	2,871,403	$379,945,000	—	30 Jun 2017	13F
CANTILLON CAPITAL MANAGEMENT LLC	13F	Company	0.57%	2,677,667	$354,309,000	—	30 Jun 2017	13F
BROOKFIELD Corp /ON/	13F	Company	0.56%	2,628,643	$347,822,000	—	30 Jun 2017	13F
Legal & General Group Plc	13F	Company	0.55%	2,554,124	$337,965,000	—	30 Jun 2017	13F
Winslow Capital Management, LLC	13F	Company	0.54%	2,539,716	$336,055,000	—	30 Jun 2017	13F
HIGHFIELDS CAPITAL MANAGEMENT LP	13F	Company	0.53%	2,485,236	$328,846,000	—	30 Jun 2017	13F
Broad Run Investment Management, LLC	13F	Company	0.52%	2,433,261	$321,969,000	—	30 Jun 2017	13F
1832 Asset Management L.P.	13F	Company	0.52%	2,408,278	$319,044,000	—	30 Jun 2017	13F
COMMONWEALTH BANK OF AUSTRALIA	13F	Company	0.47%	2,213,577	$292,899,000	—	30 Jun 2017	13F
LASALLE INVESTMENT MANAGEMENT SECURITIES LLC	13F	Company	0.45%	2,113,060	$279,600,000	—	30 Jun 2017	13F
PRUDENTIAL FINANCIAL INC	13F	Company	0.42%	1,963,407	$259,798,000	—	30 Jun 2017	13F
TCW GROUP INC	13F	Company	0.42%	1,950,076	$258,034,000	—	30 Jun 2017	13F
TIAA CREF INVESTMENT MANAGEMENT LLC	13F	Company	0.4%	1,884,457	$249,351,000	—	30 Jun 2017	13F
VOYA INVESTMENT MANAGEMENT LLC	13F	Company	0.39%	1,816,984	$240,423,000	—	30 Jun 2017	13F
Capital International Investors	13F	Company	0.38%	1,758,744	$232,717,000	—	30 Jun 2017	13F
Russell Investments Group, Ltd.	13F	Company	0.37%	1,719,142	$227,463,000	—	30 Jun 2017	13F
Neuberger Berman Group LLC	13F	Company	0.36%	1,663,658	$220,135,000	—	30 Jun 2017	13F
DIMENSIONAL FUND ADVISORS LP	13F	Company	0.34%	1,606,119	$212,525,000	—	30 Jun 2017	13F
APG Asset Management N.V.	13F	Company	0.34%	1,569,676	$207,700,000	—	30 Jun 2017	13F
Swiss National Bank	13F	Company	0.33%	1,560,683	$206,510,000	—	30 Jun 2017	13F
RENAISSANCE TECHNOLOGIES LLC	13F	Company	0.33%	1,550,700	$205,189,000	—	30 Jun 2017	13F

Institutional Holders of AMERICAN TOWER CORP /MA/ - Common Stock (AMT) as of Q3 2017

As of 30 Sep 2017, AMERICAN TOWER CORP /MA/ - Common Stock (AMT) was held by 954 institutional shareholders that filed Form 13F with the SEC. Together, they reported ownership of 394,336,677 shares. The largest 10 holders included VANGUARD GROUP INC, BlackRock Inc., WELLINGTON MANAGEMENT GROUP LLP, PRICE T ROWE ASSOCIATES INC /MD/, STATE STREET CORP, FMR LLC, MASSACHUSETTS FINANCIAL SERVICES CO /MA/, GOLDMAN SACHS GROUP INC, JANUS HENDERSON GROUP PLC, and Capital World Investors. This page lists 955 institutional shareholders reporting positions in this security for the Q3 2017 filing period.

Investor	Option	Weight %	Change %	Value $	* Price	Shares	Share Change	Activity	Report Period

Compare Q3 2017 vs Q2 2017 Across Filers

Q2 2017 holders

902

Q3 2017 holders

954

Holder diff

Investor	Q2 2017 Shares	Q3 2017 Shares	Share Diff	Share Chg %	Q2 2017 Value $	Q3 2017 Value $	Value Diff $	Value Chg %

Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).

Quarterly Holders Trend

Quarterly Value Trend

Quarterly Shares Trend

* Reported Price is the price of the security as of the portfolio date. This value is significant in that it is the last known price at which the security was still held.
An asterisk sign (*) next to the price indicates that the price is likely invalid.