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Eric Mandelblatt’s CoStar Group CSGP Stock Holding History

Eric Mandelblatt’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
2025
Q2 		– Sell
-1,050,747
Closed -$83.3M – 30
2025
Q1 		$83.3M Buy
1,050,747
+577,835
+122% +$44M 1.18% 20
2024
Q4 		$33.9M Buy
+472,912
New +$35.7M 0.45% 22

Other funds holding CSGP

Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
BAMCO Inc
BAMCO Inc New York $66.6B AUM 7.35% 1-Year Est. Return
Principal Financial Group
Principal Financial Group Des Moines, Iowa $204B AUM 27.99% 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
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
Baillie Gifford & Co
Baillie Gifford & Co Edinburgh, United Kingdom $110B AUM 4.8% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return

Eric Mandelblatt's CSGP Position: Q2 2025 in Review

Eric Mandelblatt sold out of CoStar Group (CSGP) in Q2 2025, closing a stake of 1,050,747 shares — an estimated $83.3M sold.

Eric Mandelblatt first reported a position in CSGP in Q4 2024 and held it in 2 quarters. The position peaked at $83.3M in Q1 2025. 873 funds tracked by Wall St. Rank hold CSGP as of Q2 2025.

  • Eric Mandelblatt reported no remaining CoStar Group position as of Q2 2025 after selling out during the quarter.
  • Eric Mandelblatt sold 1,050,747 CoStar Group shares in Q2 2025, an estimated $83.3M.
  • Eric Mandelblatt first reported a position in CoStar Group in Q4 2024 and held it in 2 quarters.
  • Eric Mandelblatt's CoStar Group position peaked at $83.3M in Q1 2025.
  • 873 funds tracked by Wall St. Rank held CoStar Group as of Q2 2025.

Based on Soroban Capital Partners's 13F filing for Q2 2025, filed 14 Aug 2025.