CSGP
CoStar Group Inc
CoStar Group Inc historical holders
total: 11
Viking Global Investors CoStar Group Inc transactions over time
- Total transactions:
- 10
- New positions:
- 3
- Sold out:
- 3
- Reduced:
- 4
- Held since:
- 2025 Q2
- Held for:
- 3 quarters
- Latest activity:
- 2026 Q1
Ole Andreas Halvorsen has been an institutional investor in CoStar Group Inc (CSGP) since 2020 Q3. According to 2026 Q1 report, Ole Andreas Halvorsen doesn't hold any shares. The fund/company first acquired CSGP in 2020 Q3, initially purchasing about 3.00M shares. Ole Andreas Halvorsen later completely sold out the position and reinvested in CSGP again in 2025 Q2. Since the initial investment, Viking Global Investors has made 9 more transactions in this position.
When did Ole Andreas Halvorsen exit their CSGP position?
Ole Andreas Halvorsen no longer holds CoStar Group Inc (CSGP). They sold off their entire position in 2026 Q1, closing out an investment that began in 2020 Q3.
When did Ole Andreas Halvorsen first invest in CSGP?
Ole Andreas Halvorsen first invested in CoStar Group Inc (CSGP) in 2020 Q3 at the reported quarter-end price of $84.85 per share, acquiring 3,001,460 shares in their initial purchase.
What is Ole Andreas Halvorsen's average cost basis for CSGP?
Based on historical transaction data, Ole Andreas Halvorsen's estimated cost basis for CoStar Group Inc (CSGP) is approximately $80.40 per share. This represents their average reported price* across all buy transactions.
Has Ole Andreas Halvorsen reinvested in CSGP after selling?
Yes, Ole Andreas Halvorsen has shown renewed interest in CoStar Group Inc (CSGP). After completely selling their position, they reinitiated an investment in 2025 Q2, demonstrating continued conviction in this ticker.
Estimated cost basis*
- Weighted AVG buy price:
- $80.40
- Weighted AVG sell price:
- $74.52
CSGP transactions history by Viking Global Investors
10 results
| Period |
% of portfolio |
Shares held after* |
Reported price* |
Value* |
% (shares) of activity |
% change to portfolio |
|---|---|---|---|---|---|---|
|
2026 Q1
|
0.00%
|
0
|
$67.24
|
|
-100% (-1,442,582)
|
-0.26%
|
|
2025 Q4
|
0.26%
|
1,442,582
|
$67.24
|
$96,999,214
|
-22.01% (-407,147)
|
-0.07%
|
|
2025 Q3
|
0.41%
|
1,849,729
|
$84.37
|
$156,061,636
|
-42.53% (-1,368,839)
|
-0.33%
|
|
2025 Q2
|
0.75%
|
3,218,568
|
$80.40
|
$258,772,867
|
new
|
+0.75%
|
|
2025 Q1
|
0.00%
|
0
|
$71.59
|
|
-100% (-1,162,703)
|
-0.27%
|
|
2024 Q4
|
0.27%
|
1,162,703
|
$71.59
|
$83,237,908
|
-7.81% (-98,492)
|
-0.03%
|
|
2024 Q3
|
0.35%
|
1,261,195
|
$75.44
|
$95,144,551
|
new
|
+0.35%
|
|
2021 Q1
|
0.00%
|
0
|
$92.43
|
|
-100% (-709,490)
|
-0.18%
|
|
2020 Q4
|
0.18%
|
$92.43
|
-76.36% (-2,291,970)
|
|||
|
2020 Q3
|
0.92%
|
$84.85
|
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.