Ole Andreas Halvorsen
Viking Global Investors
Ole Andreas Halvorsen Arthur J Gallagher & Co stake
total: 670
Viking Global Investors AJG trades
- Total transactions:
- 17
- New positions:
- 5
- Sold out:
- 5
- Added:
- 3
- Reduced:
- 4
- Held since:
- 2025 Q4
- Held for:
- 2 quarters
- Latest activity:
- 2026 Q2
According to 2026 Q2 report, Ole Andreas Halvorsen doesn't hold any Arthur J Gallagher & Co (AJG) shares. To date, the estimated cost basis is nearly $258.79 for "buy" trades and estimated average "sell" price is $216.58. Viking Global Investors first purchased AJG in 2018 Q1, initially acquiring about 1.37M shares. Ole Andreas Halvorsen later completely sold out the position and invested in Arthur J Gallagher & Co again in 2025 Q4. Since the initial investment in Arthur J Gallagher & Co (AJG), Viking Global Investors has made 16 more transactions.
When did Ole Andreas Halvorsen sell Arthur J Gallagher & Co (AJG)?
Ole Andreas Halvorsen sold off the entire Arthur J Gallagher & Co (AJG) position in 2026 Q2.
When did Ole Andreas Halvorsen buy Arthur J Gallagher & Co (AJG)?
Ole Andreas Halvorsen first invested in Arthur J Gallagher & Co (AJG) in 2018 Q1 at the reported quarter-end price of $68.73 per share.
What's the cost basis of Viking Global Investors's AJG stake?
The estimated cost basis for Arthur J Gallagher & Co (AJG) stake is around $258.79 per share. This represents their average reported price* across all buy transactions
Estimated cost basis*
- Weighted AVG buy price:
- $258.79
- Weighted AVG sell price:
- $216.58
Ole Andreas Halvorsen's historical trades in Arthur J Gallagher & Co
17 results
| Period |
% of portfolio |
Shares held after* |
Reported price* |
Value* |
% (shares) of activity |
% change to portfolio |
|---|---|---|---|---|---|---|
|
2026 Q2
|
0.00%
|
0
|
$216.58
|
|
-100% (-727,441)
|
-0.44%
|
|
2026 Q1
|
0.44%
|
727,441
|
$216.58
|
$157,549,172
|
-30.12% (-313,536)
|
-0.18%
|
|
2025 Q4
|
0.71%
|
1,040,977
|
$258.79
|
$269,394,438
|
new
|
+0.71%
|
|
2025 Q3
|
0.00%
|
0
|
$320.12
|
|
-100% (-725,795)
|
-0.67%
|
|
2025 Q2
|
0.67%
|
725,795
|
$320.12
|
$232,341,495
|
+8.89% (+59,243)
|
+0.05%
|
|
2025 Q1
|
0.73%
|
666,552
|
$345.24
|
$230,120,412
|
new
|
+0.73%
|
|
2023 Q4
|
0.00%
|
0
|
$227.93
|
|
-100% (-957,820)
|
-0.89%
|
|
2023 Q3
|
0.89%
|
957,820
|
$227.93
|
$218,315,913
|
+16.45% (+135,305)
|
+0.13%
|
|
2023 Q2
|
0.74%
|
822,515
|
$219.57
|
$180,599,619
|
new
|
+0.74%
|
|
2020 Q2
|
0.00%
|
$81.51
|
-100% (-1,158,751)
|
|||
|
2020 Q1
|
0.49%
|
$81.51
|
new
|
|||
|
2019 Q2
|
0.00%
|
$78.10
|
-100% (-475,830)
|
|||
|
2019 Q1
|
0.21%
|
$78.10
|
-60.37% (-724,969)
|
|||
|
2018 Q4
|
0.50%
|
$73.70
|
-2.84% (-35,050)
|
|||
|
2018 Q3
|
0.51%
|
$74.44
|
-28.77% (-499,160)
|
|||
|
2018 Q2
|
0.65%
|
$65.28
|
+26.31% (+361,441)
|
|||
|
2018 Q1
|
0.57%
|
$68.73
|
new
|
|||
* 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.