AMT
American Tower Corp
American Tower Corp historical holders
total: 6
Viking Global Investors American Tower Corp transactions over time
- Total transactions:
- 4
- New positions:
- 1
- Sold out:
- 1
- Added:
- 1
- Reduced:
- 1
- Held since:
- 2024 Q4
- Held for:
- 3 quarters
- Latest activity:
- 2025 Q3
Ole Andreas Halvorsen has been an institutional investor in American Tower Corp (AMT) since 2024 Q4. According to 2026 Q1 report, Ole Andreas Halvorsen doesn't hold any shares. The fund/company first acquired AMT in 2024 Q4, initially purchasing 897,340 shares. Since the initial investment, Viking Global Investors has made 3 more transactions in this position.
When did Ole Andreas Halvorsen exit their AMT position?
Ole Andreas Halvorsen no longer holds American Tower Corp (AMT). They sold off their entire position in 2025 Q3, closing out an investment that began in 2024 Q4.
When did Ole Andreas Halvorsen first invest in AMT?
Ole Andreas Halvorsen first invested in American Tower Corp (AMT) in 2024 Q4 at the reported quarter-end price of $183.41 per share, acquiring 897,340 shares in their initial purchase.
What is Ole Andreas Halvorsen's average cost basis for AMT?
Based on historical transaction data, Ole Andreas Halvorsen's estimated cost basis for American Tower Corp (AMT) is approximately $209.20 per share. This represents their average reported price* across all buy transactions.
Estimated cost basis*
- Weighted AVG buy price:
- $209.20
- Weighted AVG sell price:
- $220.95
AMT transactions history by Viking Global Investors
4 results
| Period |
% of portfolio |
Shares held after* |
Reported price* |
Value* |
% (shares) of activity |
% change to portfolio |
|---|---|---|---|---|---|---|
|
2025 Q3
|
0.00%
|
0
|
$221.02
|
|
-100% (-2,797,125)
|
-1.79%
|
|
2025 Q2
|
1.79%
|
2,797,125
|
$221.02
|
$618,220,568
|
+233.47% (+1,958,329)
|
+1.25%
|
|
2025 Q1
|
0.58%
|
838,796
|
$217.60
|
$182,522,010
|
-6.52% (-58,544)
|
-0.04%
|
|
2024 Q4
|
0.53%
|
897,340
|
$183.41
|
$164,581,129
|
new
|
+0.53%
|
* Shares, change to shares, sold shares, shares held after: split-adjusted.
* Reported price: this doesn't represent the actual buy or sell price. It is the split-adjusted price of the security as of the last day of the reported period.
If the security is completely sold out, we show the reported split-adjusted price prior to the actual period.
If the security is completely sold out, we show the reported split-adjusted price prior to the actual period.
* Estimated cost basis: based on "Reported price*" (not earlier than 2013 Q2). Calculation starts from the latest "new buy" activity to the latest "close out" activity (if any).
* Value or Price: If the security is completely sold out, we show the reported value (or price) prior to the actual period.
* New buy or own: this means there is no earlier reporting (for us or in general). So we can't know if the actual purchase of the security happened at the reported period or earlier.