Wallace Weitz's CSGP Position Overview
Wallace Weitz (via Weitz Investment Management, Inc.) currently holds 719,850 shares of CoStar Group, Inc. (CSGP) worth $48.4 M, representing 2.87% of the portfolio. First purchased in 2020-Q1, this long-term strategic position has been held for 24 quarters.
Based on 13F filings, Wallace Weitz has maintained a strategic position in CSGP, demonstrating sustained confidence in this investment. Largest addition occurred in Q1 2022, adding 313,700 shares. Largest reduction occurred in Q3 2022, reducing 215,900 shares.
Analysis based on 13F filings available since 2013 Q2
Wallace Weitz's CoStar Group (CSGP) Holding Value Over Time
Track share changes against reported price movement
Quarterly CoStar Group (CSGP) Trades by Wallace Weitz
| Report Date | Bought/Sold (Sh.) | % Change | Qtr. End Shares | Reported Price |
|---|---|---|---|---|
| Q3 2025 | -45,750 | Reduce 5.98% | 719,850 | $84.37 |
| Q2 2025 | -146,000 | Reduce 16.02% | 765,600 | $80.40 |
| Q1 2025 | +21,725 | Add 2.44% | 911,600 | $79.23 |
| Q4 2024 | +3,375 | Add 0.38% | 889,875 | $71.59 |
| Q2 2024 | +10,000 | Add 1.14% | 886,500 | $74.14 |
| Q4 2023 | -70,500 | Reduce 7.44% | 876,500 | $87.39 |
| Q3 2023 | -121,000 | Reduce 11.33% | 947,000 | $76.89 |
| Q2 2023 | -32,800 | Reduce 2.98% | 1.07 M | $89.00 |
| Q1 2023 | -5,000 | Reduce 0.45% | 1.1 M | $68.85 |
| Q4 2022 | -141,900 | Reduce 11.37% | 1.11 M | $77.28 |
| Q3 2022 | -215,900 | Reduce 14.75% | 1.25 M | $69.65 |
| Q2 2022 | +20,500 | Add 1.42% | 1.46 M | $60.41 |
| Q1 2022 | +313,700 | Add 27.78% | 1.44 M | $66.61 |
| Q4 2021 | +189,900 | Add 20.21% | 1.13 M | $79.03 |
| Q3 2021 | +40,000 | Add 4.45% | 939,500 | $86.06 |
| Q2 2021 | +65,000 | Add 7.79% | 899,500 | $82.82 |
| Q1 2021 | +35,000 | Add 4.38% | 834,500 | $82.19 |
| Q4 2020 | +500 | Add 0.06% | 799,500 | $92.43 |
| Q2 2020 | +150,000 | Add 23.11% | 799,000 | $71.07 |
| Q1 2020 | +649,000 | New Buy | 649,000 | $58.72 |
Wallace Weitz's CoStar Group Investment FAQs
Wallace Weitz first purchased CoStar Group, Inc. (CSGP) in Q1 2020, acquiring 649,000 shares, as reported in their 13F filing for that period. Note: Analysis reflects filings available since Q2 2013; earlier records may be incomplete.
Wallace Weitz has held CoStar Group, Inc. (CSGP) for 24 quarters since Q1 2020.
Wallace Weitz's largest addition to CoStar Group, Inc. (CSGP) was in Q1 2020, adding 649,000 shares worth $38.11 M.
According to the latest 13F filing for Q4 2025, Wallace Weitz's firm, Weitz Investment Management, Inc., owns 719,850 shares of CoStar Group, Inc. (CSGP), valued at approximately $48.4 M.
As of the Q4 2025 filing, CoStar Group, Inc. (CSGP) represents approximately 2.87% of Wallace Weitz's publicly disclosed stock portfolio, making it one of their key holdings.
Wallace Weitz's peak holding in CoStar Group, Inc. (CSGP) was 1,463,600 shares, as reported at the end of Q2 2022.