CoStar Group, Inc.
US ˙ NasdaqGS ˙ US22160N1090

SecurityCSGP / CoStar Group, Inc.
InstitutionSignaturefd, Llc
Latest Disclosed Ownership2,964 shares
Latest Disclosed Value $ 119,568
Signaturefd, Llc reports 6.14% decrease in ownership of CSGP / CoStar Group, Inc.

On April 7, 2026 - Signaturefd, Llc filed a 13F-HR form disclosing ownership of 2,964 shares of CoStar Group, Inc. (US:CSGP) valued at $119,568 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 20, 2026 disclosing 3,158 shares of CoStar Group, Inc.. This represents a change in shares of -6.14% during the quarter. The current value of the position is $98,998 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-04-07 2026-03-31 13F COSTAR GROUP COM 22160N109 2,964 -194 -6.14 120 -43.87 0.0018
2026-01-20 2025-12-31 13F COSTAR GROUP COM 22160N109 3,158 -1,639 -34.17 212 -47.52 0.0032
2025-10-21 2025-09-30 13F COSTAR GROUP COM 22160N109 4,797 9 0.19 405 5.21 0.0064
2025-07-16 2025-06-30 13F COSTAR GROUP COM 22160N109 4,788 -939 -16.40 385 -15.23 0.0066
2025-05-02 2025-03-31 13F COSTAR GROUP COM 22160N109 5,727 1,637 40.02 454 55.14 0.0086
2025-02-10 2024-12-31 13F COSTAR GROUP COM 22160N109 4,090 -443 -9.77 293 -14.37 0.0055
2024-10-21 2024-09-30 13F COSTAR GROUP COM 22160N109 4,533 658 16.98 342 18.82 0.0065
2024-07-29 2024-06-30 13F COSTAR GROUP COM 22160N109 3,875 -1,112 -22.30 287 -40.33 0.0058
2024-05-03 2024-03-31 13F COSTAR GROUP COM 22160N109 4,987 132 2.72 482 13.44 0.0102
2024-02-01 2023-12-31 13F COSTAR GROUP COM 22160N109 4,855 -351 -6.74 424 6.00 0.0098
2023-11-03 2023-09-30 13F COSTAR GROUP COM 22160N109 5,206 538 11.53 400 -3.61 0.0104
2023-08-01 2023-06-30 13F COSTAR GROUP COM 22160N109 4,668 282 6.43 415 37.87 0.0106
2023-04-28 2023-03-31 13F COSTAR GROUP COM 22160N109 4,386 -974 -18.17 302 -27.29 0.0082
2023-01-30 2022-12-31 13F COSTAR GROUP COM 22160N109 5,360 347 6.92 414 18.62 0.0121
2022-11-08 2022-09-30 13F COSTAR GROUP COM 22160N109 5,013 1,236 32.72 349 53.07 0.0119
2022-08-10 2022-06-30 13F COSTAR GROUP COM 22160N109 3,777 1,121 42.21 228 28.81 0.0078
2022-05-02 2022-03-31 13F COSTAR GROUP COM 22160N109 2,656 1,228 85.99 177 56.64 0.0053
2022-01-25 2021-12-31 13F COSTAR GROUP COM 22160N109 1,428 -556 -28.02 113 -33.92 0.0035
2021-10-28 2021-09-30 13F COSTAR GROUP COM 22160N109 1,984 524 35.89 171 41.32 0.0059
2021-07-26 2021-06-30 13F COSTAR GROUP COM 22160N109 1,460 1,340 1,116.67 121 22.22 0.0048
2021-04-30 2021-03-31 13F COSTAR GROUP COM 22160N109 120 15 14.29 99 2.06 0.0044
2021-02-11 2020-12-31 13F COSTAR GROUP COM 22160N109 105 10 10.53 97 19.75 0.0046
2020-11-03 2020-09-30 13F COSTAR GROUP COM 22160N109 95 -6 -5.94 81 12.50 0.0043
2020-07-30 2020-06-30 13F COSTAR GROUP COM 22160N109 101 -4 -3.81 72 16.13 0.0044
2020-04-23 2020-03-31 13F COSTAR GROUP COM 22160N109 105 40 61.54 62 58.97 0.0054
2020-02-05 2019-12-31 13F COSTAR GROUP COM 22160N109 65 33 103.12 39 105.26 0.0029
2019-10-16 2019-09-30 13F COSTAR GROUP COM 22160N109 32 1 3.23 19 11.76 0.0016
2019-07-31 2019-06-30 13F COSTAR GROUP COM 22160N109 31 2 6.90 17 21.43 0.0015
2019-05-09 2019-03-31 13F COSTAR GROUP COM 22160N109 29 0 0.00 14 40.00 0.0012
2019-02-13 2018-12-31 13F COSTAR GROUP COM 22160N109 29 8 38.10 10 11.11 0.0009
2018-11-14 2018-09-30 13F COSTAR GROUP COM 22160N109 21 10 90.91 9 80.00 0.0009
2018-08-14 2018-06-30 13F COSTAR GROUP COM 22160N109 11 0 0.00 5 25.00 0.0006
2018-05-08 2018-03-31 13F COSTAR GROUP COM 22160N109 11 11 4 0.0005
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.