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Needham Investment Management’s CoStar Group CSGP Stock Holding History

Needham Investment Management’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 		$4.52M Buy
159,500
+17,500
+12% +$602K 0.14% 119
2026
Q1 		$5.73M Buy
142,000
+81,500
+135% +$4.24M 0.29% 86
2025
Q4 		$4.07M Buy
60,500
+57,250
+1,762% +$4.06M 0.26% 93
2025
Q3 		$274K Buy
+3,250
New +$287K 0.02% 158

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

Needham Investment Management's CSGP Position: Q2 2026 in Review

Needham Investment Management increased its CoStar Group (CSGP) stake by 12% in Q2 2026, buying an estimated $602K and bringing the position to 159,500 shares worth $4.52M. The position accounts for 0.14% of the portfolio, ranked #119.

Needham Investment Management first reported a position in CSGP in Q3 2025 and has held it in 4 quarters since. The position peaked at $5.73M in Q1 2026. 757 funds tracked by Wall St. Rank hold CSGP as of Q2 2026.

  • Needham Investment Management held 159,500 shares of CoStar Group worth $4.52M as of Q2 2026.
  • Needham Investment Management bought 17,500 CoStar Group shares in Q2 2026, an estimated $602K.
  • CoStar Group made up 0.14% of Needham Investment Management's portfolio in Q2 2026, its #119 holding.
  • Needham Investment Management first reported a position in CoStar Group in Q3 2025 and has held it in 4 quarters since.
  • Needham Investment Management's CoStar Group position peaked at $5.73M in Q1 2026.
  • 757 funds tracked by Wall St. Rank held CoStar Group as of Q2 2026.

Based on Needham Investment Management's 13F filing for Q2 2026, filed 14 Aug 2026.