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Atom Investors’s CoStar Group CSGP Stock Holding History

Atom Investors’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 		$604K Sell
21,342
-19,056
-47% -$655K 0.05% 513
2026
Q1 		$1.63M Buy
40,398
+36,439
+920% +$1.9M 0.12% 278
2025
Q4 		$266K Buy
+3,959
New +$280K 0.02% 459
2021
Q1 		– Sell
-50,960
Closed -$4.71M – 276
2020
Q4 		$4.71M Buy
50,960
+20,440
+67% +$1.79M 0.48% 57
2020
Q3 		$2.59M Buy
30,520
+17,270
+130% +$1.38M 0.25% 96
2020
Q2 		$942K Buy
+13,250
New +$857K 0.06% 213

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

Atom Investors's CSGP Position: Q2 2026 in Review

Atom Investors reduced its CoStar Group (CSGP) stake by 47% in Q2 2026, selling an estimated $655K and leaving 21,342 shares worth $604K. The position accounts for 0.05% of the portfolio, ranked #513.

Atom Investors first reported a position in CSGP in Q2 2020 and has held it in 6 quarters since. The position peaked at $4.71M in Q4 2020. 757 funds tracked by Wall St. Rank hold CSGP as of Q2 2026.

  • Atom Investors held 21,342 shares of CoStar Group worth $604K as of Q2 2026.
  • Atom Investors sold 19,056 CoStar Group shares in Q2 2026, an estimated $655K.
  • CoStar Group made up 0.05% of Atom Investors's portfolio in Q2 2026, its #513 holding.
  • Atom Investors first reported a position in CoStar Group in Q2 2020 and has held it in 6 quarters since.
  • Atom Investors's CoStar Group position peaked at $4.71M in Q4 2020.
  • 757 funds tracked by Wall St. Rank held CoStar Group as of Q2 2026.

Based on Atom Investors's 13F filing for Q2 2026, filed 14 Aug 2026.