CoStar Group, Inc.
MX ˙ BMV ˙ US22160N1090
DETTE SYMBOL ER IKKE LÆNGERE AKTIVT
SecurityMX:CSGP / CoStar Group, Inc.
InstitutionFidelis Capital Partners, LLC
Latest Disclosed Ownership5,770 shares
Latest Disclosed Value $ 232,762
Fidelis Capital Partners, LLC reports 14.19% increase in ownership of CSGP / CoStar Group, Inc.

On May 6, 2026 - Fidelis Capital Partners, LLC filed a 13F-HR form disclosing ownership of 5,770 shares of CoStar Group, Inc. (MX:CSGP) valued at $232,762 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 9, 2026 disclosing 5,053 shares of CoStar Group, Inc.. This represents a change in shares of 14.19% during the quarter.

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)
2026-05-06 2026-03-31 13F COSTAR GROUP COM 22160N109 5,770 717 14.19 233 -31.56 0.0166
2026-02-09 2025-12-31 13F COSTAR GROUP COM 22160N109 5,053 -711 -12.34 340 -30.25 0.0247
2025-11-03 2025-09-30 13F COSTAR GROUP COM 22160N109 5,764 -89 -1.52 486 -13.68 0.0380
2025-08-07 2025-06-30 13F COSTAR GROUP COM 22160N109 5,853 -5 -0.09 564 16.08 0.0513
2025-05-01 2025-03-31 13F COSTAR GROUP COM 22160N109 5,858 30 0.51 485 8.50 0.0516
2025-02-06 2024-12-31 13F COSTAR GROUP COM 22160N109 5,828 90 1.57 448 7.19 0.0448
2024-10-25 2024-09-30 13F COSTAR GROUP COM 22160N109 5,738 -300 -4.97 418 -6.50 0.0498
2024-08-13 2024-06-30 13F COSTAR GROUP COM 22160N109 6,038 -197 -3.16 446 -25.91 0.0636
2024-05-06 2024-03-31 13F/A-1 COSTAR GROUP COM 22160N109 6,235 960 18.20 602 30.87 0.0915
2024-05-02 2024-03-31 13F COSTAR GROUP COM 22160N109 6,230 955 584 0.0893
2024-01-31 2023-12-31 13F COSTAR GROUP COM 22160N109 5,275 860 19.48 461 35.69 0.1020
2023-11-08 2023-09-30 13F COSTAR GROUP COM 22160N109 4,415 -499 -10.15 339 -22.43 0.1161
2023-08-10 2023-06-30 13F COSTAR GROUP COM 22160N109 4,914 816 19.91 437 43.28 0.1596
2023-05-09 2023-03-31 13F COSTAR GROUP COM 22160N109 4,098 4,098 306 0.1300
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.