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Beck Mack & Oliver’s CoStar Group CSGP Stock Holding History

Beck Mack & Oliver’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 		$118M Buy
2,926,975
+702,086
+32% +$36.5M 2.43% 17
2025
Q4 		$150M Buy
2,224,889
+501,457
+29% +$35.5M 2.72% 14
2025
Q3 		$145M Sell
1,723,432
-3,214
-0.2% -$284K 2.64% 14
2025
Q2 		$139M Sell
1,726,646
-83,891
-5% -$6.53M 2.65% 13
2025
Q1 		$143M Buy
1,810,537
+105,194
+6% +$8M 2.87% 11
2024
Q4 		$122M Buy
1,705,343
+571,532
+50% +$43.2M 2.26% 14
2024
Q3 		$85.5M Buy
1,133,811
+130,375
+13% +$9.89M 1.66% 24
2024
Q2 		$74.4M Buy
1,003,436
+135,494
+16% +$11.5M 1.54% 24
2024
Q1 		$83.8M Buy
867,942
+93,932
+12% +$8.09M 1.7% 22
2023
Q4 		$67.6M Sell
774,010
-8,895
-1% -$720K 1.57% 23
2023
Q3 		$60.2M Sell
782,905
-1,706
-0.2% -$141K 1.58% 22
2023
Q2 		$69.8M Buy
784,611
+3,104
+0.4% +$240K 1.82% 16
2023
Q1 		$53.8M Buy
781,507
+6,416
+0.8% +$473K 1.55% 24
2022
Q4 		$59.9M Sell
775,091
-6,970
-0.9% -$545K 1.76% 18
2022
Q3 		$54.5M Buy
782,061
+2,031
+0.3% +$141K 1.76% 18
2022
Q2 		$47.1M Buy
780,030
+300,775
+63% +$18.2M 1.41% 27
2022
Q1 		$31.9M Buy
+479,255
New +$31.8M 0.8% 39

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

Beck Mack & Oliver's CSGP Position: Q1 2026 in Review

Beck Mack & Oliver increased its CoStar Group (CSGP) stake by 32% in Q1 2026, buying an estimated $36.5M and bringing the position to 2,926,975 shares worth $118M. The position accounts for 2.43% of the portfolio, ranked #17.

Beck Mack & Oliver first reported a position in CSGP in Q1 2022 and has held it in 17 quarters since. The position peaked at $150M in Q4 2025. 793 funds tracked by Wall St. Rank hold CSGP as of Q1 2026.

  • Beck Mack & Oliver held 2,926,975 shares of CoStar Group worth $118M as of Q1 2026.
  • Beck Mack & Oliver bought 702,086 CoStar Group shares in Q1 2026, an estimated $36.5M.
  • CoStar Group made up 2.43% of Beck Mack & Oliver's portfolio in Q1 2026, its #17 holding.
  • Beck Mack & Oliver first reported a position in CoStar Group in Q1 2022 and has held it in 17 quarters since.
  • Beck Mack & Oliver's CoStar Group position peaked at $150M in Q4 2025.
  • 793 funds tracked by Wall St. Rank held CoStar Group as of Q1 2026.

Based on Beck Mack & Oliver's 13F filing for Q1 2026, filed 12 May 2026.