Mariner’s American Tower AMT Stock Holding History

Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake
Trade Value Portfolio Weight Portfolio Position
2026
Q2
$86.3M Buy
527,605
+79,840
+18% +$14.4M 0.09% 176
2026
Q1
$77.3M Sell
447,765
-24,972
-5% -$4.49M 0.09% 184
2025
Q4
$83M Sell
472,737
-733
-0.2% -$133K 0.1% 165
2025
Q3
$91.1M Buy
473,470
+73,928
+19% +$15.4M 0.12% 147
2025
Q2
$88.3M Buy
399,542
+28,264
+8% +$6.1M 0.13% 147
2025
Q1
$80.8M Buy
371,278
+8,190
+2% +$1.61M 0.13% 141
2024
Q4
$66.6M Buy
363,088
+85,693
+31% +$17.8M 0.11% 160
2024
Q3
$64.5M Sell
277,395
-1,601
-0.6% -$355K 0.11% 165
2024
Q2
$54.2M Sell
278,996
-1,708
-0.6% -$319K 0.11% 181
2024
Q1
$55.5M Buy
280,704
+19,957
+8% +$3.98M 0.11% 175
2023
Q4
$56.3M Sell
260,747
-14,303
-5% -$2.7M 0.13% 149
2023
Q3
$45.2M Buy
275,050
+5,005
+2% +$914K 0.12% 165
2023
Q2
$52.4M Sell
270,045
-2,275
-0.8% -$445K 0.14% 141
2023
Q1
$55.6M Buy
272,320
+17,563
+7% +$3.68M 0.16% 129
2022
Q4
$54M Sell
254,757
-11,184
-4% -$2.33M 0.17% 129
2022
Q3
$57.1M Buy
265,941
+50,385
+23% +$12.9M 0.23% 102
2022
Q2
$55.1M Buy
215,556
+13,760
+7% +$3.45M 0.23% 107
2022
Q1
$50.7M Buy
201,796
+28,484
+16% +$6.95M 0.19% 120
2021
Q4
$50.7M Buy
173,312
+140,986
+436% +$38.5M 0.21% 115
2021
Q3
$8.58M Buy
32,326
+1,750
+6% +$499K 0.04% 287
2021
Q2
$8.26M Buy
30,576
+3,338
+12% +$851K 0.05% 257
2021
Q1
$6.51M Buy
27,238
+2,822
+12% +$628K 0.05% 272
2020
Q4
$5.48M Buy
24,416
+3,720
+18% +$865K 0.04% 280
2020
Q3
$5M Buy
20,696
+973
+5% +$247K 0.05% 262
2020
Q2
$5.1M Buy
19,723
+1,954
+11% +$483K 0.05% 255
2020
Q1
$3.87M Buy
+17,769
New +$4.14M 0.05% 272
2019
Q3
Sell
-10,468
Closed -$2.14M 696
2019
Q2
$2.14M Buy
10,468
+807
+8% +$162K 0.03% 374
2019
Q1
$1.9M Buy
9,661
+2,761
+40% +$484K 0.03% 385
2018
Q4
$1.08M Sell
6,900
-2,968
-30% -$464K 0.02% 417
2018
Q3
$1.43M Buy
9,868
+38
+0.4% +$5.57K 0.04% 337
2018
Q2
$1.42M Buy
9,830
+7,706
+363% +$1.07M 0.04% 329
2018
Q1
$309K Buy
+2,124
New +$299K 0.01% 520
2016
Q4
Sell
-2,431
Closed -$276K 574
2016
Q3
$276K Buy
+2,431
New +$278K 0.01% 493

Other funds holding AMT

Mariner's AMT Position: Q2 2026 in Review

Mariner increased its American Tower (AMT) stake by 18% in Q2 2026, buying an estimated $14.4M and bringing the position to 527,605 shares worth $86.3M. The position accounts for 0.09% of the portfolio, ranked #176.

Mariner first reported a position in AMT in Q3 2016 and has held it in 33 quarters since. The position peaked at $91.1M in Q3 2025. 1,749 funds tracked by Wall St. Rank hold AMT as of Q2 2026.

  • Mariner held 527,605 shares of American Tower worth $86.3M as of Q2 2026.
  • Mariner bought 79,840 American Tower shares in Q2 2026, an estimated $14.4M.
  • American Tower made up 0.09% of Mariner's portfolio in Q2 2026, its #176 holding.
  • Mariner first reported a position in American Tower in Q3 2016 and has held it in 33 quarters since.
  • Mariner's American Tower position peaked at $91.1M in Q3 2025.
  • 1,749 funds tracked by Wall St. Rank held American Tower as of Q2 2026.

Based on Mariner's 13F filing for Q2 2026, filed 13 Aug 2026.