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Louisbourg Investments’s CoStar Group CSGP Stock Holding History

Louisbourg Investments’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 		$5.5M Buy
256,336
+81,250
+46% +$2.79M 1.01% 35
2026
Q1 		$5.39M Buy
175,086
+84,764
+94% +$4.41M 1.02% 43
2025
Q4 		$4.74M Buy
90,322
+74,637
+476% +$5.29M 0.95% 45
2025
Q3 		$1.05M Sell
15,685
-10,845
-41% -$958K 0.23% 86
2025
Q2 		$1.66M Buy
+26,530
New +$2.07M 0.39% 79

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

Louisbourg Investments's CSGP Position: Q2 2026 in Review

Louisbourg Investments increased its CoStar Group (CSGP) stake by 46% in Q2 2026, buying an estimated $2.79M and bringing the position to 256,336 shares worth $5.5M. The position accounts for 1.01% of the portfolio, ranked #35.

Louisbourg Investments first reported a position in CSGP in Q2 2025 and has held it in 5 quarters since. 759 funds tracked by Wall St. Rank hold CSGP as of Q2 2026.

  • Louisbourg Investments held 256,336 shares of CoStar Group worth $5.5M as of Q2 2026.
  • Louisbourg Investments bought 81,250 CoStar Group shares in Q2 2026, an estimated $2.79M.
  • CoStar Group made up 1.01% of Louisbourg Investments's portfolio in Q2 2026, its #35 holding.
  • Louisbourg Investments first reported a position in CoStar Group in Q2 2025 and has held it in 5 quarters since.
  • 759 funds tracked by Wall St. Rank held CoStar Group as of Q2 2026.

Based on Louisbourg Investments's 13F filing for Q2 2026, filed 23 Jul 2026.