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CORNERSTONE ADVISORS INC
> AMT
| Date | Name | Ticker | Shares | Change | Value | Change | Price |
| 12/31/2021 | AMERICAN TOWER CORP /MA/ | AMT | 39,000 | 39,000 | 11,408,000 | 11,408,000 | $292.51 |
| 09/30/2018 | AMERICAN TOWER CORP /MA/ | AMT | 0 | -17,000 | 0 | -2,451,000 | |
| 06/30/2018 | AMERICAN TOWER CORP /MA/ | AMT | 17,000 | 0 | 2,451,000 | -20,000 | $144.18 |
| 03/31/2018 | AMERICAN TOWER CORP /MA/ | AMT | 17,000 | -9,000 | 2,471,000 | -1,238,000 | $145.35 |
| 12/31/2017 | AMERICAN TOWER CORP /MA/ | AMT | 26,000 | 0 | 3,709,000 | 155,000 | $142.65 |
| 09/30/2017 | AMERICAN TOWER CORP /MA/ | AMT | 26,000 | 13,000 | 3,554,000 | 1,834,000 | $136.69 |
| 06/30/2017 | AMERICAN TOWER CORP /MA/ | AMT | 13,000 | 5,000 | 1,720,000 | 748,000 | $132.31 |
| 03/31/2017 | AMERICAN TOWER CORP /MA/ | AMT | 8,000 | 0 | 972,000 | 127,000 | $121.50 |
| 12/31/2016 | AMERICAN TOWER CORP /MA/ | AMT | 8,000 | 0 | 845,000 | -62,000 | $105.63 |
| 09/30/2016 | AMERICAN TOWER CORP /MA/ | AMT | 8,000 | 0 | 907,000 | -2,000 | $113.38 |
| 06/30/2016 | AMERICAN TOWER CORP /MA/ | AMT | 8,000 | 0 | 909,000 | 90,000 | $113.63 |
| 03/31/2016 | AMERICAN TOWER CORP /MA/ | AMT | 8,000 | 8,000 | 819,000 | 819,000 | $102.38 |
| 12/31/2015 | AMERICAN TOWER CORP /MA/ | AMT | 8,000 | 8,000 | 776,000 | 776,000 | $97.00 |
| 09/30/2015 | AMERICAN TOWER CORP /MA/ | AMT | 4,000 | 4,000 | 352,000 | 352,000 | $88.00 |
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