← Super investors
AMT
American Tower Corp
5 super-investor ownerscombined $450Mlargest position 1.8%
1 TRIM
Cohort owners over time
2016Q2 → 2026Q1How many of the cohort members held this stock each quarter.
Now: 2
Peak: 5
Owners (5) · click any column to sort
| #↑ | Manager | % Port. | History | Value | Shares |
|---|---|---|---|---|---|
| 1 | William Von Mueffling | 1.8% | 40q | $278M | 1,612,473 |
| 2 | Joel Greenblatt | 0.1% | 39q | $151M | 876,763 |
| 3 | Christopher Davis | 0.1% | 19q | $11M | 64,620 |
| 4 | Chuck Akre | 0.1% | 40q | $9M | 50,772 |
| 5 | Mairs & Power Funds | <0.1% | 33q | $349K | 2,020 |
Recent activity (1)
| Manager | Move | % Port. | Δ Shares | Value | Filed |
|---|---|---|---|---|---|
| Chuck Akre | TRIM | 0.1% | -80% | $9M | May 14, 2026 |
Long US equity 13F-HR filings only. CUSIP 03027X100. Not investment advice.