COSTAR GROUP INC (CSGP) Institutional Ownership

CSGP is currently held by 8 institutional investors tracked by InsiderSet, with a combined reported market value of approximately $1.24B based on the latest available SEC Form 13F filings for the quarter ended March 31, 2026.

The largest disclosed holder is Polen Capital Management, which reported ownership valued at approximately $507.09M in its March 31, 2026 13F filing. Based on current market prices and the latest disclosed share count, Polen Capital Management's CSGP position is now estimated to be worth approximately $380.38M, representing an estimated loss of -24.99% since the filing period.

Major shareholders tracked on this page include Polen Capital Management, Akre Capital Management, Meritage Group, and other prominent asset managers. Collectively, these investors account for approximately 99% of the total disclosed value among the investors covered in this analysis.

This page tracks disclosed ownership trends, hedge fund exposure, portfolio concentration, historical 13F filings, and estimated holding performance to help investors analyze smart money sentiment toward COSTAR GROUP INC (CSGP).

Institutional Ownership Trend

Portfolio quarterInstitutional holdersTotal reported valueTotal shares
Q1 20267$1,135,448,92028,146,973
Q4 20259$1,523,626,46827,140,062
Q3 202510$2,568,272,82530,441,411
Q2 202510$2,645,430,09632,774,910
Q1 20258$2,241,913,47228,296,355
Q4 20249$1,925,600,18426,899,098
Q3 20247$1,183,421,81915,686,928
Q2 20246$826,016,82315,276,160
Q1 20245$888,349,72611,371,062
Q4 20235$838,348,73911,192,277
Q3 20235$743,480,61511,390,754
Q2 20235$846,665,37912,173,142

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