Joel Greenblatt's CSGP Position Overview
Joel Greenblatt (via Gotham Asset Management, LLC) currently holds 447,016 shares of CoStar Group, Inc. (CSGP) worth $18.03 M, representing 0.06% of the portfolio. First purchased in 2014-Q2, this long-term strategic position has been held for 23 quarters.
Based on 13F filings, Joel Greenblatt has maintained a strategic position in CSGP, demonstrating sustained confidence in this investment. Largest addition occurred in Q1 2026, adding 316,669 shares. Largest reduction occurred in Q1 2018, reducing 175,970 shares.
Analysis based on 13F filings available since 2013 Q2
Joel Greenblatt's CoStar Group (CSGP) Holding Value Over Time
Track share changes against reported price movement
Quarterly CoStar Group (CSGP) Trades by Joel Greenblatt
| Report Date | Bought/Sold (Sh.) | % Change | Qtr. End Shares | Reported Price |
|---|---|---|---|---|
| Q1 2026 | +316,669 | Add 242.94% | 447,016 | $40.34 |
| Q4 2025 | +107,696 | Add 475.46% | 130,347 | $67.24 |
| Q3 2025 | +17,988 | Add 385.76% | 22,651 | $84.37 |
| Q2 2025 | +4,663 | New Buy | 4,663 | $80.40 |
| Q2 2023 | -7,670 | Sold Out | 0 | $0.00 |
| Q1 2023 | +7,670 | New Buy | 7,670 | $68.85 |
| Q3 2022 | -18,371 | Sold Out | 0 | $0.00 |
| Q2 2022 | +18,371 | New Buy | 18,371 | $60.42 |
| Q1 2020 | -4,380 | Sold Out | 0 | $0.00 |
| Q4 2019 | -58,740 | Reduce 93.06% | 4,380 | $59.82 |
| Q3 2019 | +63,120 | New Buy | 63,120 | $59.32 |
| Q4 2018 | -4,970 | Sold Out | 0 | $0.00 |
| Q3 2018 | +4,970 | New Buy | 4,970 | $42.05 |
| Q1 2018 | -175,970 | Sold Out | 0 | $0.00 |
| Q4 2017 | +118,590 | Add 206.67% | 175,970 | $29.69 |
| Q3 2017 | +57,380 | New Buy | 57,380 | $26.82 |
| Q1 2017 | -69,310 | Sold Out | 0 | $0.00 |
| Q4 2016 | -7,210 | Reduce 9.42% | 69,310 | $18.84 |
| Q3 2016 | -39,290 | Reduce 33.93% | 76,520 | $21.65 |
| Q2 2016 | +49,730 | Add 75.26% | 115,810 | $21.86 |
| Q1 2016 | +66,080 | New Buy | 66,080 | $18.81 |
| Q3 2014 | -116,760 | Sold Out | 0 | $0.00 |
| Q2 2014 | +116,760 | New Buy | 116,760 | $15.82 |
Joel Greenblatt's CoStar Group Investment FAQs
Joel Greenblatt first purchased CoStar Group, Inc. (CSGP) in Q2 2014, acquiring 116,760 shares, as reported in their 13F filing for that period. Note: Analysis reflects filings available since Q2 2013; earlier records may be incomplete.
Joel Greenblatt has held CoStar Group, Inc. (CSGP) for 23 quarters since Q2 2014.
Joel Greenblatt's largest addition to CoStar Group, Inc. (CSGP) was in Q1 2026, adding 447,016 shares worth $18.03 M.
According to the latest 13F filing for Q1 2026, Joel Greenblatt's firm, Gotham Asset Management, LLC, owns 447,016 shares of CoStar Group, Inc. (CSGP), valued at approximately $18.03 M.
As of the Q1 2026 filing, CoStar Group, Inc. (CSGP) represents approximately 0.06% of Joel Greenblatt's publicly disclosed stock portfolio, making it one of their key holdings.
Joel Greenblatt's peak holding in CoStar Group, Inc. (CSGP) was 447,016 shares, as reported at the end of Q1 2026.