Ownership history in BAMCO INC /NY/ · 93 quarters on record
This page tracks every 13F SEC filing in which BAMCO INC /NY/ reported a position in COSTAR GROUP INC. COM (CSGP). Data includes quarterly share count, position size as % of portfolio, estimated market value, and end-of-quarter stock price — sourced directly from SEC EDGAR 13F filings.
| Quarter | Action | Shares | Change | Chg % | % of Fund | Mkt Value | Price (EOQ) |
|---|---|---|---|---|---|---|---|
| 2025 Q4 | ADDED | 19,498,099 | +242,533 | +1.3% | 3.55% | $1.31B | $67.24 |
| 2025 Q3 | REDUCED | 19,255,566 | -424,369 | -2.2% | 4.31% | $1.62B | $84.37 |
| 2025 Q2 | ADDED | 19,679,935 | +647,413 | +3.4% | 4.29% | $1.58B | $80.40 |
| 2025 Q1 | REDUCED | 19,032,522 | -171,042 | -0.9% | 4.43% | $1.51B | $79.23 |
| 2024 Q4 | ADDED | 19,203,564 | +418,128 | +2.2% | 3.55% | $1.37B | $71.59 |
| 2024 Q3 | REDUCED | 18,785,436 | -485,562 | -2.5% | 3.76% | $1.42B | $75.44 |
| 2024 Q2 | REDUCED | 19,270,998 | -66,620 | -0.3% | 4.09% | $1.43B | $74.14 |
| 2024 Q1 | REDUCED | 19,337,618 | -53,665 | -0.3% | 4.98% | $1.87B | $96.60 |
| 2023 Q4 | ADDED | 19,391,283 | +194,781 | +1.0% | 4.51% | $1.69B | $87.39 |
| 2023 Q3 | ADDED | 19,196,502 | +91,399 | +0.5% | 4.29% | $1.48B | $76.89 |
As of 2025 Q4 — sorted by position size