AJG
Arthur J Gallagher & Co
Arthur J Gallagher & Co historical holders
total: 5
Viking Global Investors Arthur J Gallagher & Co transactions over time
- Total transactions:
- 16
- New positions:
- 5
- Sold out:
- 4
- Added:
- 3
- Reduced:
- 4
- Held since:
- 2025 Q4
- Held for:
- 2 quarters
- Latest activity:
- 2026 Q1
Ole Andreas Halvorsen has been an institutional investor in Arthur J Gallagher & Co (AJG) since 2018 Q1. According to 2026 Q1 report, Ole Andreas Halvorsen holds 727,441 shares with a market value of roughly $157.55M representing 0.44% of their equity portfolio. The fund/company first acquired AJG in 2018 Q1, initially purchasing about 1.37M shares. Ole Andreas Halvorsen later completely sold out the position and reinvested in AJG again in 2025 Q4. Since the initial investment, Viking Global Investors has made 15 more transactions in this position.
Does Ole Andreas Halvorsen still hold AJG?
Yes, Ole Andreas Halvorsen continues to hold Arthur J Gallagher & Co (AJG). According to their 2026 Q1 report, they maintain a position of 727,441 shares valued at approximately $157.55M, representing 0.44% of their equity portfolio.
When did Ole Andreas Halvorsen first invest in 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, acquiring 1,373,568 shares in their initial purchase.
What is Ole Andreas Halvorsen's average cost basis for AJG?
Based on historical transaction data, Ole Andreas Halvorsen's estimated cost basis for Arthur J Gallagher & Co (AJG) is approximately $258.79 per share. This represents their average reported price* across all buy transactions.
Has Ole Andreas Halvorsen reinvested in AJG after selling?
Yes, Ole Andreas Halvorsen has shown renewed interest in Arthur J Gallagher & Co (AJG). After completely selling their position, they reinitiated an investment in 2025 Q4, demonstrating continued conviction in this ticker.
Estimated cost basis*
- Weighted AVG buy price:
- $258.79
- Weighted AVG sell price:
- $216.58
AJG transactions history by Viking Global Investors
16 results
| Period |
% of portfolio |
Shares held after* |
Reported price* |
Value* |
% (shares) of activity |
% change to portfolio |
|---|---|---|---|---|---|---|
|
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.