MF
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Magnetar Financial’s American Tower AMT Stock Holding History

Magnetar Financial’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
Q2 		$704K Buy
+4,305
New +$775K 0.01% 536
2025
Q4 		– Sell
-3,344
Closed -$643K – 920
2025
Q3 		$643K Buy
+3,344
New +$697K ﹤0.01% 545
2023
Q4 		– Sell
-19,509
Closed -$3.21M – 371
2023
Q3 		$3.21M Buy
+19,509
New +$3.56M 0.08% 147
2022
Q1 		– Sell
-1,422
Closed -$416K – 1317
2021
Q4 		$416K Sell
1,422
-1,886
-57% -$515K ﹤0.01% 1001
2021
Q3 		$878K Buy
+3,308
New +$943K 0.01% 757
2021
Q1 		– Sell
-7,190
Closed -$1.61M – 1038
2020
Q4 		$1.61M Sell
7,190
-1,275
-15% -$296K 0.02% 387
2020
Q3 		$2.05M Buy
+8,465
New +$2.15M 0.04% 253
2018
Q4 		– Sell
-5,734
Closed -$833K – 283
2018
Q3 		$833K Buy
+5,734
New +$841K 0.02% 135
2017
Q4 		– Sell
-4,498
Closed -$615K – 686
2017
Q3 		$615K Sell
4,498
-12,733
-74% -$1.77M 0.01% 390
2017
Q2 		$2.28M Buy
+17,231
New +$2.21M 0.04% 222
2016
Q4 		– Sell
-4,658
Closed -$528K – 32
2016
Q3 		$528K Sell
4,658
-5,362
-54% -$613K 0.01% 357
2016
Q2 		$1.14M Buy
+10,020
New +$1.07M 0.02% 159
2015
Q2 		– Sell
-125,000
Closed -$11.8M – 422
2015
Q1 		$11.8M Buy
+125,000
New +$12.2M 0.2% 90

Other funds holding AMT

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Cohen & Steers
Cohen & Steers New York $63.2B AUM 17.15% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return
JP Morgan Chase
JP Morgan Chase New York $1.81T AUM 41.13% 1-Year Est. Return
Lazard Asset Management
Lazard Asset Management New York $66.1B AUM 33.53% 1-Year Est. Return

Magnetar Financial's AMT Position: Q2 2026 in Review

Magnetar Financial opened a new position in American Tower (AMT) in Q2 2026: 4,305 shares worth $704K. The stake represents 0.01% of the portfolio and ranks #536 among its holdings. This is a return to the name: Magnetar Financial previously reported a position in AMT as recently as Q3 2025.

Magnetar Financial first reported a position in AMT in Q1 2015 and has held it in 13 quarters since. The position peaked at $11.8M in Q1 2015. 1,749 funds tracked by Wall St. Rank hold AMT as of Q2 2026.

  • Magnetar Financial held 4,305 shares of American Tower worth $704K as of Q2 2026.
  • American Tower was a new Magnetar Financial position in Q2 2026.
  • American Tower made up 0.01% of Magnetar Financial's portfolio in Q2 2026, its #536 holding.
  • Magnetar Financial first reported a position in American Tower in Q1 2015 and has held it in 13 quarters since.
  • Magnetar Financial's American Tower position peaked at $11.8M in Q1 2015.
  • 1,749 funds tracked by Wall St. Rank held American Tower as of Q2 2026.

Based on Magnetar Financial's 13F filing for Q2 2026, filed 14 Aug 2026.