AMERICAN TOWER CORP (AMT) Stock Institutional Trading Activity
AMERICAN TOWER CORP (AMT) position changes reported by tracked institutional filers across multiple SEC 13F reporting periods. Based on recent SEC 13F filings (Q4 2025), investors with some of the largest reported share count changes include Akre Capital Management, Renaissance Technologies LLC, Cantillon Capital Management, Mairs & Power Growth Fund, and Torray Fund. Explore insights into buying and selling patterns, position changes, and investment conviction levels to understand institutional trading behavior and market dynamics.
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- AMERICAN TOWER CORP (AMT) stock institutional ownership
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| Portfolio quarter | Name | Type | Quantity | Remaining | Reported stock balance |
|---|---|---|---|---|---|
| Q1 2016 | Akre Capital Management | Buy | 4,359 | 6,313,375 | $646,300 |
| Q4 2015 | Torray Fund | Buy | 2,135 | 402,501 | $39,022 |
| Q4 2015 | Renaissance Technologies LLC | Sell | -276,700 | 455,439 | $44,155 |
| Q4 2015 | Meritage Group | Sell | -676,467 | 2,524,868 | $244,786 |
| Q4 2015 | Akre Capital Management | Buy | 5,523 | 6,309,016 | $611,659 |
| Q3 2015 | Torray Fund | Sell | -2,940 | 400,366 | $35,224 |
| Q3 2015 | Renaissance Technologies LLC | Buy | 721,000 | 732,139 | $64,414 |
| Q3 2015 | Meritage Group | Buy | 3,488 | 3,201,335 | $281,653 |
| Q3 2015 | Akre Capital Management | Buy | 1,029,479 | 6,303,493 | $554,581 |
| Q2 2015 | Torray Fund | Buy | 124,122 | 403,306 | $37,624 |
| Q2 2015 | Renaissance Technologies LLC | Sell | -158,100 | 11,139 | $1,039 |
| Q2 2015 | Meritage Group | Buy | 822,116 | 3,197,847 | $298,327 |
| Q2 2015 | Akre Capital Management | Buy | 1,221,461 | 5,274,014 | $492,013 |
| Q1 2015 | Torray Fund | Sell | -29,685 | 279,184 | $26,285 |
| Q1 2015 | Renaissance Technologies LLC | Sell | -541,100 | 169,239 | $15,934 |
| Q1 2015 | Meritage Group | Buy | 506,671 | 2,375,731 | $223,675 |
| Q1 2015 | Akre Capital Management | Buy | 35,472 | 4,052,553 | $383,088 |
| Q4 2014 | Torray Fund | Buy | 17,712 | 308,869 | $30,532 |
| Q4 2014 | Renaissance Technologies LLC | Buy | 357,400 | 710,339 | $70,217 |
| Q4 2014 | Meritage Group | Buy | 863 | 1,869,060 | $184,757 |
| Q4 2014 | Akre Capital Management | Sell | -290 | 4,017,081 | $397,088 |
| Q3 2014 | Torray Fund | Buy | 31,345 | 291,157 | $27,261 |
| Q3 2014 | Renaissance Technologies LLC | Buy | 100,300 | 352,939 | $33,046 |
| Q3 2014 | Meritage Group | Buy | 415 | 1,868,197 | $174,919 |
| Q3 2014 | Akre Capital Management | Sell | -7,225 | 4,017,371 | $376,146 |
| Q2 2014 | Torray Fund | Buy | 159,400 | 259,812 | $23,378 |
| Q2 2014 | Meritage Group | Buy | 262 | 1,867,782 | $168,063 |
| Q2 2014 | Akre Capital Management | Sell | -2,525 | 4,024,596 | $362,133 |
| Q1 2014 | Torray Fund | Buy | 42,790 | 100,412 | $8,221 |
| Q1 2014 | Meritage Group | Buy | 1,867,520 | 1,867,520 | $152,894 |
Frequently asked questions about AMT activity
Which institutional owners are buying AMT?
Institutional owners buying AMT include investors who have either initiated new positions or increased their existing holdings based on recent SEC 13F filings. The activity table above highlights which funds added shares in the latest reporting periods and how their positions changed over time.
What does "buy" mean in AMT activity?
"Buy" means an investor increased their reported position in AMT compared to the prior reporting period. This reflects growing exposure to AMERICAN TOWER CORP (AMT) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).
Is institutional interest in AMT increasing?
Institutional interest in AMT can be assessed by comparing the number of tracked funds adding or increasing positions versus those trimming or exiting across the periods shown. A higher number of additions typically signals increasing participation among large filers, but it should be read alongside position sizes and the full table.