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RGM Capital’s CoStar Group CSGP Stock Holding History

RGM Capital’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
-1,995,460
Closed -$134M – 2
2025
Q4 		$134M Sell
1,995,460
-97,243
-5% -$6.89M 6.51% 6
2025
Q3 		$177M Sell
2,092,703
-30,000
-1% -$2.65M 7.43% 2
2025
Q2 		$171M Sell
2,122,703
-104,800
-5% -$8.16M 6.91% 4
2025
Q1 		$176M Buy
2,227,503
+21,564
+1% +$1.64M 7.31% 4
2024
Q4 		$158M Buy
2,205,939
+607,861
+38% +$45.9M 6.52% 5
2024
Q3 		$121M Hold
1,598,078
– – 5.22% 9
2024
Q2 		$118M Hold
1,598,078
– – 4.75% 10
2024
Q1 		$154M Buy
1,598,078
+5,452
+0.3% +$469K 6.23% 7
2023
Q4 		$139M Buy
1,592,626
+39,994
+3% +$3.24M 5.7% 9
2023
Q3 		$119M Buy
1,552,632
+151,876
+11% +$12.6M 5.45% 10
2023
Q2 		$125M Buy
1,400,756
+24,502
+2% +$1.89M 5.56% 10
2023
Q1 		$94.8M Buy
1,376,254
+230,206
+20% +$17M 4.52% 12
2022
Q4 		$88.6M Hold
1,146,048
– – 5.16% 12
2022
Q3 		$79.8M Hold
1,146,048
– – 5.16% 12
2022
Q2 		$69.2M Hold
1,146,048
– – 3.62% 17
2022
Q1 		$76.3M Buy
+1,146,048
New +$76.1M 3.17% 17

Other funds holding CSGP

VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
Principal Financial Group
Principal Financial Group Des Moines, Iowa $187B AUM 18.48% 1-Year Est. Return
BAMCO Inc
BAMCO Inc New York $33.1B AUM 11.16% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.02T AUM 30.18% 1-Year Est. Return
Capital International Investors
Capital International Investors Los Angeles, California $427B AUM 29.17% 1-Year Est. Return
Baillie Gifford & Co
Baillie Gifford & Co Edinburgh, United Kingdom $97.9B AUM 20.73% 1-Year Est. Return
Polen Capital Management
Polen Capital Management Boca Raton, Florida $14.5B AUM 5.7% 1-Year Est. Return

RGM Capital's CSGP Position: Q1 2026 in Review

RGM Capital sold out of CoStar Group (CSGP) in Q1 2026, closing a stake of 1,995,460 shares — an estimated $134M sold.

RGM Capital first reported a position in CSGP in Q1 2022 and held it in 16 quarters. The position peaked at $177M in Q3 2025. 792 funds tracked by Wall St. Rank hold CSGP as of Q1 2026.

  • RGM Capital reported no remaining CoStar Group position as of Q1 2026 after selling out during the quarter.
  • RGM Capital sold 1,995,460 CoStar Group shares in Q1 2026, an estimated $134M.
  • RGM Capital first reported a position in CoStar Group in Q1 2022 and held it in 16 quarters.
  • RGM Capital's CoStar Group position peaked at $177M in Q3 2025.
  • 792 funds tracked by Wall St. Rank held CoStar Group as of Q1 2026.

Based on RGM Capital's 13F filing for Q1 2026.