Ostrum Asset Management’s American Tower AMT Stock Holding History

Ostrum Asset Management’s Portfolio AMT Stock Details AMT Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q1	$1.7M	Sell	9,875 -10,055	-50%	-$1.81M	0.1%	160
2025 Q4	$3.5M	Buy	19,930 +1,374	+7%	+$250K	0.17%	91
2025 Q3	$3.57M	Buy	18,556 +384	+2%	+$80K	0.16%	114
2025 Q2	$4.02M	Buy	18,172 +1,953	+12%	+$422K	0.19%	98
2025 Q1	$3.53M	Buy	16,219 +2,239	+16%	+$439K	0.19%	99
2024 Q4	$2.56M	Buy	13,980 +2,486	+22%	+$515K	0.22%	140
2024 Q3	$2.67M	Sell	11,494 -3,128	-21%	-$694K	0.22%	159
2024 Q2	$2.84M	Sell	14,622 -1,067	-7%	-$199K	0.25%	129
2024 Q1	$3.1M	Sell	15,689 -610	-4%	-$122K	0.25%	122
2023 Q4	$3.52M	Sell	16,299 -1,790	-10%	-$338K	0.31%	88
2023 Q3	$2.97M	Buy	18,089 +428	+2%	+$78.2K	0.28%	102
2023 Q2	$3.43M	Sell	17,661 -496	-3%	-$97K	0.29%	105
2023 Q1	$3.71M	Buy	+18,157	New	+$3.81M	0.32%	89

Other funds holding AMT

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

VPM

Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM

State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

JP Morgan Chase New York $1.56T AUM 27.86% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

Cohen & Steers New York $57.6B AUM 8.03% 1-Year Est. Return

Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return

Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return

Deutsche Bank Frankfurt Am Main Ge, Germany $303B AUM 30.15% 1-Year Est. Return

Ostrum Asset Management's AMT Position: Q1 2026 in Review

Ostrum Asset Management reduced its American Tower (AMT) stake by 50% in Q1 2026, selling an estimated $1.81M and leaving 9,875 shares worth $1.7M. The position accounts for 0.1% of the portfolio, ranked #160.

Ostrum Asset Management first reported a position in AMT in Q1 2023 and has held it in 13 quarters since. The position peaked at $4.02M in Q2 2025. 1,748 funds tracked by Wall St. Rank hold AMT as of Q1 2026.

Ostrum Asset Management held 9,875 shares of American Tower worth $1.7M as of Q1 2026.
Ostrum Asset Management sold 10,055 American Tower shares in Q1 2026, an estimated $1.81M.
American Tower made up 0.1% of Ostrum Asset Management's portfolio in Q1 2026, its #160 holding.
Ostrum Asset Management first reported a position in American Tower in Q1 2023 and has held it in 13 quarters since.
Ostrum Asset Management's American Tower position peaked at $4.02M in Q2 2025.
1,748 funds tracked by Wall St. Rank held American Tower as of Q1 2026.

Based on Ostrum Asset Management's 13F filing for Q1 2026, filed 14 May 2026.