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CSGP icon

Ossiam’s CoStar Group CSGP Stock Holding History

Ossiam’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 		$9.79M Sell
345,829
-41,629
-11% -$1.43M 0.13% 116
2026
Q1 		$15.6M Buy
387,458
+213,591
+123% +$11.1M 0.27% 56
2025
Q4 		$11.7M Sell
173,867
-1,951
-1% -$138K 0.23% 59
2025
Q3 		$14.8M Buy
175,818
+128,146
+269% +$11.3M 0.19% 99
2025
Q2 		$3.83M Buy
47,672
+38,956
+447% +$3.03M 0.04% 194
2025
Q1 		$691K Sell
8,716
-3,022
-26% -$230K 0.01% 383
2024
Q4 		$840K Sell
11,738
-1,099
-9% -$83K 0.01% 373
2024
Q3 		$968K Buy
12,837
+4,733
+58% +$359K 0.02% 350
2024
Q2 		$601K Buy
8,104
+33
+0.4% +$2.8K 0.01% 434
2024
Q1 		$780K Sell
8,071
-1,698
-17% -$146K 0.01% 429
2023
Q4 		$854K Buy
9,769
+2,754
+39% +$223K 0.01% 387
2023
Q3 		$539K Sell
7,015
-1,906
-21% -$158K 0.01% 453
2023
Q2 		$794K Buy
8,921
+6,252
+234% +$483K 0.01% 347
2023
Q1 		$184K Sell
2,669
-3,367
-56% -$248K ﹤0.01% 494
2022
Q4 		$466K Sell
6,036
-6,571
-52% -$513K 0.01% 374
2022
Q3 		$878K Buy
+12,607
New +$875K 0.03% 282
2022
Q2 		– Sell
-1,038
Closed -$69K – 450
2022
Q1 		$69K Buy
+1,038
New +$68.9K ﹤0.01% 385

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

Ossiam's CSGP Position: Q2 2026 in Review

Ossiam reduced its CoStar Group (CSGP) stake by 11% in Q2 2026, selling an estimated $1.43M and leaving 345,829 shares worth $9.79M. The position accounts for 0.13% of the portfolio, ranked #116.

Ossiam first reported a position in CSGP in Q1 2022 and has held it in 17 quarters since. The position peaked at $15.6M in Q1 2026. 758 funds tracked by Wall St. Rank hold CSGP as of Q2 2026.

  • Ossiam held 345,829 shares of CoStar Group worth $9.79M as of Q2 2026.
  • Ossiam sold 41,629 CoStar Group shares in Q2 2026, an estimated $1.43M.
  • CoStar Group made up 0.13% of Ossiam's portfolio in Q2 2026, its #116 holding.
  • Ossiam first reported a position in CoStar Group in Q1 2022 and has held it in 17 quarters since.
  • Ossiam's CoStar Group position peaked at $15.6M in Q1 2026.
  • 758 funds tracked by Wall St. Rank held CoStar Group as of Q2 2026.

Based on Ossiam's 13F filing for Q2 2026, filed 13 Aug 2026.