Latest Period
Q1 2026
Security Snapshot
AMERICAN TOWER CORP /MA/ - Common Stock (AMT) Institutional Ownership
CUSIP: 03027X100
13F Institutional Holders and Ownership History from Q1 2014 to Q1 2026
Institutions Reporting
1,739
Shares (Excl. Options)
431,258,471
Price
$172.58
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- Security type / class
- Equity / Common Stock
- Symbol
- AMT on NYSE
- All holders as of 31 Mar 2026
- Q1 2026
- Total 13F shares
- 431,258,471
- Total 13F value
- $74,385,134,885
- Portfolio coverage rank
- 0.04%
- Share change
- -4,692,480
- Value change
- -$847,038,873
- Number of holders
- 1,739
- Shares outstanding
- 466,215,331
- SEC-reported price per share
- $176.53
- Insider filing price
- $176.53
Latest holder snapshot
5 signals
Issuer context
Names, identifiers, and filing context for this profile.
3 identity fields
13F Shares, Excluding Options vs Price
13F Value, Excluding Options
Total Investors
Key facts
- AMT - AMERICAN TOWER CORP /MA/ - Common Stock is tracked under CUSIP 03027X100.
- 1739 institutions reported positions in Q1 2026.
- 3 significant owners is listed from Schedule 13D/13G reporting.
Change
- Holder count moved from 1,768 to 1,739 between Q4 2025 and Q1 2026.
- SEC-reported value moved from $76,933,543,236 to $74,385,134,885.
Research use
- You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
- 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.
Evidence
Source: SEC Form 13F
Open SEC evidence
Latest holder context comes from 1739 institutions filings for Q1 2026.
Security key
03027X100
Latest holder period
Q1 2026
13F holders
1,739
13D/G owners
3
CIK / CUSIP context first
Open Q1 2026 holders
AMT full holder history
AMERICAN TOWER CORP /MA/ SEC filings
AMERICAN TOWER CORP /MA/ company facts
AMERICAN TOWER CORP /MA/ insider transactions
AMERICAN TOWER CORP /MA/ 13D/G history
Broader feeds
Recent Quarterly Holder Reports
Open recent reporting periods for CUSIP 03027X100:
13D/G owners
Significant owners
Large-stake holder rows connected to Schedule 13D/G evidence.
Rows
3
Security
AMT
| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| BlackRock, Inc. | 9.2% | $9,096,034,371 | 43,047,962 | BlackRock, Inc. | 31 Dec 2024 | |||
| VANGUARD CAPITAL MANAGEMENT LLC | 7.6% | $6,082,733,798 | 35,245,879 | Vanguard Capital Management | 31 Mar 2026 | |||
| VANGUARD PORTFOLIO MANAGEMENT LLC | 5.9% | $4,783,737,772 | 27,718,958 | Vanguard Portfolio Management | 31 Mar 2026 |
As of 31 Mar 2026, 1,739 institutional investors reported holding 431,258,471 shares of AMERICAN TOWER CORP /MA/ - Common Stock (AMT). This represents 93% of the company’s total 466,215,331 outstanding shares.
13F concentration
Top 25 institutional shareholders
Largest 13F positions for this security by reported shares and value.
Top holder share
58%
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| BlackRock, Inc. | 9.6% | 44,954,137 | +2.1% | 0.14% | $7,758,184,902 |
| VANGUARD CAPITAL MANAGEMENT LLC | 6.5% | 30,362,380 | 0% | 0.13% | $5,239,939,541 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 5.9% | 27,596,159 | 0% | 0.25% | $4,762,545,120 |
| STATE STREET CORP | 4.6% | 21,434,609 | +2.1% | 0.13% | $3,699,184,821 |
| JPMORGAN CHASE & CO | 3.2% | 15,128,367 | +5% | 0.17% | $2,577,269,004 |
| GEODE CAPITAL MANAGEMENT, LLC | 3% | 13,933,628 | +3.2% | 0.15% | $2,400,040,632 |
| COHEN & STEERS, INC. | 2.7% | 12,619,866 | +1.1% | 3.8% | $2,177,938,000 |
| FMR LLC | 2.4% | 11,317,048 | -5.8% | 0.1% | $1,953,096,205 |
| MORGAN STANLEY | 2.1% | 9,583,923 | -2.3% | 0.1% | $1,653,994,186 |
| DEUTSCHE BANK AG\ | 1.7% | 7,769,353 | +12% | 0.44% | $1,340,834,942 |
| LAZARD ASSET MANAGEMENT LLC | 1.6% | 7,325,943 | +20% | 2.1% | $1,264,311,243 |
| Invesco Ltd. | 1.6% | 7,275,230 | +4.7% | 0.19% | $1,255,559,118 |
| PRINCIPAL FINANCIAL GROUP INC | 1.3% | 5,914,591 | -2% | 0.55% | $1,020,742,893 |
| DIMENSIONAL FUND ADVISORS LP | 1.2% | 5,811,041 | -7.5% | 0.21% | $1,002,830,074 |
| Capital World Investors | 1.2% | 5,667,888 | +34% | 0.13% | $978,164,111 |
| NORTHERN TRUST CORP | 1.1% | 5,339,734 | -0.25% | 0.12% | $921,531,294 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 1.1% | 5,240,288 | +2.7% | 0.14% | $904,368,903 |
| Legal & General Group Plc | 1% | 4,825,921 | -0.98% | 0.19% | $832,857,447 |
| PRICE T ROWE ASSOCIATES INC /MD/ | 1% | 4,774,353 | -16% | 0.1% | $823,959,000 |
| GOLDMAN SACHS GROUP INC | 1% | 4,697,393 | +22% | 0.11% | $810,676,019 |
| BANK OF AMERICA CORP /DE/ | 0.97% | 4,511,662 | +14% | 0.06% | $778,622,650 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.93% | 4,339,494 | +2% | 0.16% | $748,909,873 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 0.9% | 4,195,978 | -1.7% | 0.39% | $724,141,883 |
| Capital Research Global Investors | 0.88% | 4,103,353 | +4.6% | 0.11% | $708,156,661 |
| Nuveen, LLC | 0.83% | 3,889,182 | -2.1% | 0.18% | $671,195,029 |
Quarter history
Institutional holders across reporting periods
Holder count, reported shares/value, and median price by quarter.
Periods
49
Latest
Q1 2026
Rows shown
1-25 of 49
| Period | 13F Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2026 Q1 | 431,258,471 | $74,385,134,885 | -$847,038,873 | $172.58 | 1,739 |
| 2025 Q4 | 437,972,152 | $76,933,543,236 | +$1,321,588,687 | $175.57 | 1,768 |
| 2025 Q3 | 428,228,939 | $82,357,412,809 | -$1,976,783,962 | $192.32 | 1,781 |
| 2025 Q2 | 435,907,060 | $96,341,434,941 | +$1,423,833,794 | $221.02 | 1,832 |
| 2025 Q1 | 430,404,456 | $93,629,539,451 | -$214,621,650 | $217.60 | 1,823 |
| 2024 Q4 | 432,768,798 | $79,401,083,638 | +$428,265,411 | $183.41 | 1,771 |
| 2024 Q3 | 427,108,097 | $99,172,125,930 | -$659,221,767 | $232.56 | 1,829 |
| 2024 Q2 | 429,616,906 | $83,577,769,576 | +$359,568,447 | $194.38 | 1,744 |
| 2024 Q1 | 429,941,519 | $84,782,909,321 | -$164,160,149 | $197.59 | 1,746 |
| 2023 Q4 | 432,666,078 | $93,371,462,540 | +$1,754,551,095 | $215.88 | 1,772 |
| 2023 Q3 | 423,952,716 | $69,760,172,128 | +$186,388,855 | $164.45 | 1,611 |
| 2023 Q2 | 422,387,585 | $81,966,033,281 | -$52,944,852 | $193.94 | 1,670 |
| 2023 Q1 | 421,907,885 | $86,187,376,054 | -$522,563,920 | $204.34 | 1,684 |
| 2022 Q4 | 424,314,059 | $89,946,923,520 | -$9,265,376 | $211.86 | 1,696 |
| 2022 Q3 | 423,749,608 | $90,997,283,803 | -$384,616,602 | $214.70 | 1,662 |
| 2022 Q2 | 425,396,270 | $108,745,537,457 | +$3,304,481,753 | $255.59 | 1,727 |
| 2022 Q1 | 414,904,336 | $104,197,106,158 | -$422,099,763 | $251.22 | 1,703 |
| 2021 Q4 | 416,441,412 | $121,613,766,733 | +$952,167,635 | $292.50 | 1,773 |
| 2021 Q3 | 412,201,127 | $109,428,346,230 | -$464,958,209 | $265.41 | 1,663 |
| 2021 Q2 | 412,905,993 | $111,543,815,769 | +$3,412,669,013 | $270.14 | 1,637 |
| 2021 Q1 | 400,701,540 | $95,714,148,639 | -$304,022,013 | $239.06 | 1,596 |
| 2020 Q4 | 402,309,717 | $90,240,784,755 | -$306,413,086 | $224.46 | 1,571 |
| 2020 Q3 | 404,008,957 | $97,618,570,098 | -$1,029,759,380 | $241.73 | 1,505 |
| 2020 Q2 | 406,803,128 | $105,112,112,438 | +$191,523,047 | $258.54 | 1,491 |
| 2020 Q1 | 407,406,706 | $88,789,381,681 | -$249,409,975 | $217.75 | 1,416 |