Costar Group Inc (CSGP) SEC 13F Holdings (Q2 2026): Institutional Buyers & Sellers

CSGP ranks #707 out of 37696 tracked stocks by institutional interest — one of the most closely watched names in our coverage.

CSGP is a top-conviction position for Akre Capital Management LLC — at 6.5% of their entire disclosed 13F portfolio, it's one of their largest single bets, not just a passing allocation.

The largest dollar stake in CSGP belongs to Vanguard Portfolio Management LLC, but the position matters far more to Akre Capital Management LLC, who has 6.5% of their own portfolio riding on it — a reminder that the biggest holder by size and the holder with the biggest bet aren't always the same fund.

Douglas Lane & Associates, LLC has added to its CSGP position for two straight quarters, increasing it by $21.8M to reach $54.3M today.

Chicago Capital, LLC has trimmed its CSGP position for two straight quarters, cutting it by $41.6M while still holding $963.8K.

CSGP is up 1% today, and institutions have been net buyers of $947.8M this quarter — today's price move and the underlying institutional flow are pointing the same direction.

CSGP posted net income of $73.6M over the trailing twelve months, and currently trades at a P/E of 184.7.

• Profitable — net income of $73.6M over the trailing twelve months
• Revenue grew 22.0% year over year
• Net income declined year over year, from $104.1M to $73.6M
• Generated $430.0M in positive operating cash flow
• Current ratio of 2.84x — enough short-term assets to cover short-term liabilities
• Liabilities run 0.21x equity — within a conventional range