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Wallace Weitz’s CoStar Group CSGP Stock Holding History

Wallace Weitz’s Portfolio CSGP Stock Details CSGP Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$12M Sell
423,181
-93,844
-18% -$3.23M 0.83% 29
2026
Q1 		$20.9M Sell
517,025
-202,825
-28% -$10.6M 1.46% 25
2025
Q4 		$48.4M Hold
719,850
– – 2.87% 13
2025
Q3 		$60.7M Sell
719,850
-45,750
-6% -$4.04M 3.3% 12
2025
Q2 		$61.6M Sell
765,600
-146,000
-16% -$11.4M 3.31% 10
2025
Q1 		$72.2M Buy
911,600
+21,725
+2% +$1.65M 3.84% 7
2024
Q4 		$63.7M Buy
889,875
+3,375
+0.4% +$255K 3.29% 11
2024
Q3 		$66.9M Hold
886,500
– – 3.3% 9
2024
Q2 		$65.7M Buy
886,500
+10,000
+1% +$847K 3.45% 9
2024
Q1 		$84.7M Hold
876,500
– – 4.27% 7
2023
Q4 		$76.6M Sell
876,500
-70,500
-7% -$5.71M 4.04% 7
2023
Q3 		$72.8M Sell
947,000
-121,000
-11% -$10M 4% 6
2023
Q2 		$95.1M Sell
1,068,000
-32,800
-3% -$2.53M 5.07% 3
2023
Q1 		$75.8M Sell
1,100,800
-5,000
-0.5% -$369K 4.37% 6
2022
Q4 		$85.5M Sell
1,105,800
-141,900
-11% -$11.1M 4.84% 3
2022
Q3 		$86.9M Sell
1,247,700
-215,900
-15% -$15M 5.11% 3
2022
Q2 		$88.4M Buy
1,463,600
+20,500
+1% +$1.24M 4.62% 3
2022
Q1 		$96.1M Buy
1,443,100
+313,700
+28% +$20.8M 4.26% 4
2021
Q4 		$89.3M Buy
1,129,400
+189,900
+20% +$15.9M 3.58% 10
2021
Q3 		$80.9M Buy
939,500
+40,000
+4% +$3.46M 3.39% 11
2021
Q2 		$74.5M Buy
899,500
+65,000
+8% +$5.62M 3.14% 11
2021
Q1 		$68.6M Buy
834,500
+35,000
+4% +$3.02M 3.03% 13
2020
Q4 		$73.9M Buy
799,500
+500
+0.1% +$43.8K 3.15% 11
2020
Q3 		$67.8M Hold
799,000
– – 3.18% 8
2020
Q2 		$56.8M Buy
799,000
+150,000
+23% +$9.7M 2.82% 12
2020
Q1 		$38.1M Buy
+649,000
New +$42.3M 2.02% 17

Other funds holding CSGP

Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
BAMCO Inc
BAMCO Inc New York $66.6B AUM 7.35% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Capital International Investors
Capital International Investors Los Angeles, California $484B AUM 34.9% 1-Year Est. Return
Baillie Gifford & Co
Baillie Gifford & Co Edinburgh, United Kingdom $110B AUM 4.8% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
ACM
AKRE Capital Management Middleburg, Virginia $5.12B AUM 19.08% 1-Year Est. Return
Polen Capital Management
Polen Capital Management Boca Raton, Florida $11.6B AUM 8.03% 1-Year Est. Return

Wallace Weitz's CSGP Position: Q2 2026 in Review

Wallace Weitz reduced its CoStar Group (CSGP) stake by 18% in Q2 2026, selling an estimated $3.23M and leaving 423,181 shares worth $12M. The position accounts for 0.83% of the portfolio, ranked #29.

Wallace Weitz first reported a position in CSGP in Q1 2020 and has held it in 26 quarters since. The position peaked at $96.1M in Q1 2022. 754 funds tracked by Wall St. Rank hold CSGP as of Q2 2026.

  • Wallace Weitz held 423,181 shares of CoStar Group worth $12M as of Q2 2026.
  • Wallace Weitz sold 93,844 CoStar Group shares in Q2 2026, an estimated $3.23M.
  • CoStar Group made up 0.83% of Wallace Weitz's portfolio in Q2 2026, its #29 holding.
  • Wallace Weitz first reported a position in CoStar Group in Q1 2020 and has held it in 26 quarters since.
  • Wallace Weitz's CoStar Group position peaked at $96.1M in Q1 2022.
  • 754 funds tracked by Wall St. Rank held CoStar Group as of Q2 2026.

Based on Weitz Investment Management's 13F filing for Q2 2026, filed 12 Aug 2026.