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Archon Partners’s CoStar Group CSGP Stock Holding History

Archon Partners’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
Q4 		– Sell
-54,000
Closed -$4.56M – 44
2025
Q3 		$4.56M Buy
+54,000
New +$4.77M 0.48% 37
2025
Q1 		– Sell
-152,000
Closed -$10.9M – 40
2024
Q4 		$10.9M Sell
152,000
-33,500
-18% -$2.53M 1.27% 28
2024
Q3 		$14M Hold
185,500
– – 1.62% 23
2024
Q2 		$13.8M Hold
185,500
– – 1.77% 21
2024
Q1 		$17.9M Hold
185,500
– – 2.19% 19
2023
Q4 		$16.2M Hold
185,500
– – 2.23% 19
2023
Q3 		$14.3M Hold
185,500
– – 2.23% 19
2023
Q2 		$16.5M Hold
185,500
– – 2.47% 16
2023
Q1 		$12.8M Buy
185,500
+5,500
+3% +$406K 2.13% 17
2022
Q4 		$13.9M Buy
180,000
+8,000
+5% +$625K 2.51% 17
2022
Q3 		$12M Sell
172,000
-11,000
-6% -$764K 2.28% 18
2022
Q2 		$11.1M Buy
183,000
+2,000
+1% +$121K 1.94% 23
2022
Q1 		$12.1M Buy
181,000
+34,400
+23% +$2.28M 1.6% 27
2021
Q4 		$11.6M Sell
146,600
-24,500
-14% -$2.06M 1.42% 30
2021
Q3 		$14.7M Hold
171,100
– – 1.85% 24
2021
Q2 		$14.2M Buy
171,100
+100
+0.1% +$8.64K 1.77% 26
2021
Q1 		$14.1M Buy
171,000
+47,000
+38% +$4.06M 1.96% 22
2020
Q4 		$11.5M Buy
124,000
+7,180
+6% +$630K 1.54% 32
2020
Q3 		$9.91M Hold
116,820
– – 1.56% 28
2020
Q2 		$8.3M Buy
116,820
+4,000
+4% +$259K 1.51% 29
2020
Q1 		$6.63M Buy
+112,820
New +$7.35M 1.43% 29

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 $33.1B AUM 11.16% 1-Year Est. Return
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
Invesco
Invesco Atlanta, Georgia $1.02T AUM 30.18% 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
Capital International Investors
Capital International Investors Los Angeles, California $484B AUM 34.9% 1-Year Est. Return
ACM
AKRE Capital Management Middleburg, Virginia $6.13B AUM 15.27% 1-Year Est. Return

Archon Partners's CSGP Position: Q4 2025 in Review

Archon Partners sold out of CoStar Group (CSGP) in Q4 2025, closing a stake of 54,000 shares — an estimated $4.56M sold.

Archon Partners first reported a position in CSGP in Q1 2020 and held it in 21 quarters. The position peaked at $17.9M in Q1 2024. 847 funds tracked by Wall St. Rank hold CSGP as of Q4 2025.

  • Archon Partners reported no remaining CoStar Group position as of Q4 2025 after selling out during the quarter.
  • Archon Partners sold 54,000 CoStar Group shares in Q4 2025, an estimated $4.56M.
  • Archon Partners first reported a position in CoStar Group in Q1 2020 and held it in 21 quarters.
  • Archon Partners's CoStar Group position peaked at $17.9M in Q1 2024.
  • 847 funds tracked by Wall St. Rank held CoStar Group as of Q4 2025.

Based on Archon Partners's 13F filing for Q4 2025, filed 17 Feb 2026.