CSGP Stock Ownership Activity

COSTAR GROUP INC 13F holders

10 value investing gurus have made changes to the COSTAR GROUP INC (CSGP) position according to the gurus' latest SEC quarterly report(s). CSGP has been bought (as a new position) by 1, completely sold out by 3 guru(s), the number of CSGP shares has been increased by 3, decreased by 3 super investor(s).

Which gurus or hedge funds are buying CSGP now?

According to the latest SEC filing(s) COSTAR GROUP INC (CSGP) has been bought by 4 gurus: David M. Polen - Polen Capital Management (added shares +157.01%), Nathaniel Simons - Meritage Group (new buy), Chuck Akre - Akre Capital Management (added shares +7.59%) and Brian Bares - Bares Capital Management (added shares +0.95%).

To see more about who is investing in COSTAR GROUP INC (CSGP), please go to the CSGP ownership page.

2026 Q1 (9 results)
Nathaniel Simons
buy
+3,329,006
+5.07%
5.07%
David M. Polen
+157.01%
+7,679,432
+2.14%
3.51%
Chuck Akre
+7.59%
+730,468
+0.48%
6.83%
Chase Coleman III
-33.60%
-759,109
-0.13%
0.26%
Wallace Weitz
-42.39%
-195,000
-1.27%
1.72%
Dennis Hong
-64.59%
-618,476
-9.32%
5.11%
C.T. Fitzpatrick
-100.00%
-4,485,021
-7.99%
0.00%
Daniel Loeb
-100.00%
-3,165,000
-10.22%
0.00%
Ole Andreas Halvorsen
-100.00%
-1,442,582
-0.27%
0.00%
Current price: $33.40 17.20% AVG reported price*: $40.34
2025 Q4 (7 results)
C.T. Fitzpatrick
+17.05%
+653,412
+0.79%
0.00%
Dennis Hong
+6.87%
+61,523
+0.78%
12.12%
Daniel Loeb
+4.91%
+148,000
+0.14%
0.00%
Chuck Akre
+3.35%
+311,320
+0.23%
7.09%
Ole Andreas Halvorsen
-22.01%
-407,147
-0.07%
0.00%
David M. Polen
-23.35%
-1,489,973
-0.43%
1.40%
Chase Coleman III
-30.38%
-986,000
-0.22%
0.51%
Current price: $33.40 50.33% AVG reported price*: $67.24
2025 Q3 (7 results)
C.T. Fitzpatrick
+3.10%
+115,125
+0.18%
5.86%
Brian Bares
+0.95%
+11,599
+0.09%
9.54%
Chuck Akre
-0.03%
-2,747
-0.00%
7.83%
Daniel Loeb
-2.20%
-68,000
-0.07%
3.04%
David M. Polen
-7.84%
-542,919
-0.15%
1.75%
Dennis Hong
-33.92%
-460,026
-5.77%
11.24%
Ole Andreas Halvorsen
-42.53%
-1,368,839
-0.30%
0.41%
Current price: $33.40 60.41% AVG reported price*: $84.37
2025 Q2 (7 results)
Ole Andreas Halvorsen
buy
+3,218,568
+0.75%
0.75%
Daniel Loeb
+56.20%
+1,110,000
+1.17%
3.26%
Dennis Hong
+18.09%
+207,758
+2.11%
13.76%
Brian Bares
+7.21%
+81,650
+0.64%
9.48%
David M. Polen
+4.88%
+322,028
+0.08%
1.71%
Chuck Akre
-0.05%
-4,360
-0.00%
7.33%
C.T. Fitzpatrick
-23.11%
-1,116,993
-1.64%
5.45%
Current price: $33.40 58.66% AVG reported price*: $80.80
2025 Q1 (8 results)
Daniel Loeb
buy
+1,975,000
+2.46%
2.46%
Brian Bares
+74.52%
+483,797
+4.50%
10.54%
Dennis Hong
+26.21%
+238,499
+2.60%
12.50%
Wallace Weitz
+5.09%
+22,300
+0.21%
4.24%
David M. Polen
+1.61%
+104,612
+0.03%
1.64%
Chuck Akre
-0.00%
-288
-0.00%
7.09%
C.T. Fitzpatrick
-5.22%
-265,961
-0.40%
7.19%
Ole Andreas Halvorsen
-100.00%
-1,162,703
-0.26%
0.00%
Current price: $33.40 57.84% AVG reported price*: $79.23
2024 Q4 (8 results)
David M. Polen
buy
+6,497,188
+1.26%
1.26%
Dennis Hong
buy
+909,803
+8.63%
8.63%
Chase Coleman III
buy
+3,245,109
+0.88%
0.88%
C.T. Fitzpatrick
+15.11%
+669,549
+0.80%
6.10%
Chuck Akre
+4.25%
+379,787
+0.24%
5.77%
Wallace Weitz
+0.62%
+2,700
+0.02%
3.39%
Brian Bares
+0.11%
+738
+0.00%
4.18%
Ole Andreas Halvorsen
-7.81%
-98,492
-0.02%
0.00%
Current price: $33.40 53.34% AVG reported price*: $71.59
2024 Q3 (4 results)
Ole Andreas Halvorsen
buy
+1,261,195
+0.35%
0.35%
C.T. Fitzpatrick
+7.03%
+290,902
+0.37%
5.59%
Chuck Akre
+1.87%
+163,670
+0.10%
5.61%
Brian Bares
-53.11%
-734,368
-5.04%
4.45%
Current price: $33.40 55.73% AVG reported price*: $75.44
50 of 162

Shares, change to shares, sold shares - 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.

Value or Price - If the security is completely sold out, we show the reported value (or price) prior to the actual period.