COSTAR GROUP INC (CSGP) Stock Institutional Trading Activity
COSTAR GROUP INC (CSGP) position changes reported by tracked institutional filers across multiple SEC 13F reporting periods. Based on recent SEC 13F filings (Q1 2026), investors with some of the largest reported share count changes include Sequoia Financial Advisors, Polen Capital Management, Tiger Global Management, Vulcan Value Partners, and Viking Global Investors. Explore insights into buying and selling patterns, position changes, and investment conviction levels to understand institutional trading behavior and market dynamics.
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- COSTAR GROUP INC (CSGP) stock institutional ownership
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| Portfolio quarter | Name | Type | Quantity | Remaining | Reported stock balance |
|---|---|---|---|---|---|
| Q4 2023 | Sequoia Financial Advisors | Buy | 7,373 | 12,519 | $1,094,036 |
| Q4 2023 | Akre Capital Management | Buy | 6,443 | 7,255,669 | $634,072,914 |
| Q3 2023 | Bares Capital Management | Sell | -27,522 | 2,065,105 | $158,785,923 |
| Q3 2023 | Vulcan Value Partners | Sell | -939,638 | 1,723,070 | $132,393 |
| Q3 2023 | Sequoia Financial Advisors | Buy | 75 | 5,146 | $395,676 |
| Q3 2023 | Parnassus Endeavor Fund | Buy | 46,901 | 348,207 | $26,773,636 |
| Q3 2023 | Akre Capital Management | Buy | 137,796 | 7,249,226 | $557,392,987 |
| Q2 2023 | Bares Capital Management | Sell | -8,431 | 2,092,627 | $186,243,803 |
| Q2 2023 | Vulcan Value Partners | Sell | -432,262 | 2,662,708 | $236,753 |
| Q2 2023 | Sequoia Financial Advisors | Buy | 987 | 5,071 | $451,319 |
| Q2 2023 | Parnassus Endeavor Fund | Buy | 44,191 | 301,306 | $26,816,234 |
| Q1 2023 | Bares Capital Management | Sell | -57,390 | 2,101,058 | $144,657,843 |
| Q1 2023 | Renaissance Technologies LLC | Buy | 1,331,280 | 1,374,480 | $94,633 |
| Q1 2023 | Vulcan Value Partners | Buy | 401,547 | 3,094,970 | $213,072 |
| Q1 2023 | Sequoia Financial Advisors | Sell | -626 | 4,084 | $281,184 |
| Q1 2023 | Parnassus Endeavor Fund | Sell | -1,888,019 | 257,115 | $17,702,368 |
| Q4 2022 | Bares Capital Management | Sell | -96,855 | 2,158,448 | $166,804,861 |
| Q4 2022 | Vulcan Value Partners | Sell | -894,776 | 2,693,423 | $208,215 |
| Q4 2022 | Sequoia Financial Advisors | Buy | 3,608 | 4,710 | $363,989 |
| Q4 2022 | Parnassus Endeavor Fund | Sell | -6,389,354 | 2,145,134 | $165,775,956 |
| Q3 2022 | Bares Capital Management | Sell | -8,213 | 2,255,303 | $157,082 |
| Q3 2022 | Vulcan Value Partners | Sell | -1,431,644 | 3,588,199 | $249,919 |
| Q3 2022 | Renaissance Technologies LLC | Sell | -1,381,080 | 43,200 | $3,009 |
| Q3 2022 | Parnassus Endeavor Fund | Buy | 84,603 | 8,534,488 | $594,427 |
| Q2 2022 | Bares Capital Management | Buy | 141,490 | 2,263,516 | $136,739 |
| Q2 2022 | Renaissance Technologies LLC | Buy | 620,500 | 1,424,280 | $86,041 |
| Q2 2022 | Vulcan Value Partners | Sell | -1,906,616 | 5,019,843 | $303,248 |
| Q2 2022 | Akre Capital Management | Sell | -2,556,750 | 7,111,430 | $429,601 |
| Q2 2022 | Parnassus Endeavor Fund | Buy | 131,548 | 8,449,885 | $510,458 |
| Q1 2022 | Bares Capital Management | Sell | -979,830 | 2,122,026 | $141,348 |
Frequently asked questions about CSGP activity
Which institutional owners are buying CSGP?
Institutional owners buying CSGP include investors who have either initiated new positions or increased their existing holdings based on recent SEC 13F filings. The activity table above highlights which funds added shares in the latest reporting periods and how their positions changed over time.
What does "buy" mean in CSGP activity?
"Buy" means an investor increased their reported position in CSGP compared to the prior reporting period. This reflects growing exposure to COSTAR GROUP INC (CSGP) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).
Is institutional interest in CSGP increasing?
Institutional interest in CSGP can be assessed by comparing the number of tracked funds adding or increasing positions versus those trimming or exiting across the periods shown. A higher number of additions typically signals increasing participation among large filers, but it should be read alongside position sizes and the full table.