Parnassus Investments
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Parnassus Investments’s CoStar Group CSGP Stock Holding History

Parnassus 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
Q1 		– Sell
-272,688
Closed -$18.3M – 139
2025
Q4 		$18.3M Sell
272,688
-364,286
-57% -$25.8M 0.05% 113
2025
Q3 		$53.7M Sell
636,974
-18,424
-3% -$1.63M 0.12% 92
2025
Q2 		$52.7M Buy
+655,398
New +$51.1M 0.12% 92
2025
Q1 		– Sell
-12,009
Closed -$860K – 138
2024
Q4 		$860K Sell
12,009
-218,660
-95% -$16.5M ﹤0.01% 124
2024
Q3 		$17.4M Sell
230,669
-117,538
-34% -$8.91M 0.04% 110
2024
Q2 		$25.8M Hold
348,207
– – 0.06% 100
2024
Q1 		$33.6M Hold
348,207
– – 0.07% 102
2023
Q4 		$30.4M Hold
348,207
– – 0.07% 98
2023
Q3 		$26.8M Buy
348,207
+46,901
+16% +$3.89M 0.07% 101
2023
Q2 		$26.8M Buy
301,306
+44,191
+17% +$3.41M 0.06% 100
2023
Q1 		$17.7M Sell
257,115
-1,888,019
-88% -$139M 0.04% 104
2022
Q4 		$166M Sell
2,145,134
-6,389,354
-75% -$499M 0.41% 53
2022
Q3 		$594M Buy
8,534,488
+84,603
+1% +$5.87M 1.55% 28
2022
Q2 		$510M Buy
8,449,885
+131,548
+2% +$7.97M 1.22% 32
2022
Q1 		$554M Buy
8,318,337
+2,300,462
+38% +$153M 1.12% 33
2021
Q4 		$476M Buy
6,017,875
+5,630,875
+1,455% +$472M 0.91% 37
2021
Q3 		$33.3M Hold
387,000
– – 0.07% 107
2021
Q2 		$32.1M Hold
387,000
– – 0.07% 105
2021
Q1 		$31.8M Hold
387,000
– – 0.08% 104
2020
Q4 		$35.8M Hold
387,000
– – 0.1% 87
2020
Q3 		$32.8M Sell
387,000
-8,860
-2% -$706K 0.1% 86
2020
Q2 		$28.1M Buy
+395,860
New +$25.6M 0.1% 86

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
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Principal Financial Group
Principal Financial Group Des Moines, Iowa $204B AUM 27.99% 1-Year Est. Return
BAMCO Inc
BAMCO Inc New York $66.6B AUM 7.35% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.26T AUM 61.52% 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
Polen Capital Management
Polen Capital Management Boca Raton, Florida $11.6B AUM 8.03% 1-Year Est. Return

Parnassus Investments's CSGP Position: Q1 2026 in Review

Parnassus Investments sold out of CoStar Group (CSGP) in Q1 2026, closing a stake of 272,688 shares — an estimated $18.3M sold.

Parnassus Investments first reported a position in CSGP in Q2 2020 and held it in 22 quarters. The position peaked at $594M in Q3 2022. 797 funds tracked by Wall St. Rank hold CSGP as of Q1 2026.

  • Parnassus Investments reported no remaining CoStar Group position as of Q1 2026 after selling out during the quarter.
  • Parnassus Investments sold 272,688 CoStar Group shares in Q1 2026, an estimated $18.3M.
  • Parnassus Investments first reported a position in CoStar Group in Q2 2020 and held it in 22 quarters.
  • Parnassus Investments's CoStar Group position peaked at $594M in Q3 2022.
  • 797 funds tracked by Wall St. Rank held CoStar Group as of Q1 2026.

Based on Parnassus Investments's 13F filing for Q1 2026, filed 12 May 2026.