CoStar Group, Inc.
MX ˙ BMV ˙ US22160N1090
DETTE SYMBOL ER IKKE LÆNGERE AKTIVT
SecurityMX:CSGP / CoStar Group, Inc.
InstitutionUs Bancorp \de\
Latest Disclosed Ownership59,293 shares
Latest Disclosed Value $ 2,391,877
Us Bancorp \de\ reports 8.05% decrease in ownership of CSGP / CoStar Group, Inc.

On May 14, 2026 - Us Bancorp \de\ filed a 13F-HR form disclosing ownership of 59,293 shares of CoStar Group, Inc. (MX:CSGP) valued at $2,391,877 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 30, 2026 disclosing 64,485 shares of CoStar Group, Inc.. This represents a change in shares of -8.05% 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)
2026-05-14 2026-03-31 13F COSTAR GROUP COM 22160N109 59,293 -5,192 -8.05 2,392 -44.84 0.0009
2026-01-30 2025-12-31 13F COSTAR GROUP COM 22160N109 64,485 -3,575 -5.25 4,336 -24.50 0.0051
2025-11-12 2025-09-30 13F COSTAR GROUP COM 22160N109 68,060 3,060 4.71 5,742 9.87 0.0068
2025-07-24 2025-06-30 13F COSTAR GROUP COM 22160N109 65,000 -4,084 -5.91 5,226 -4.51 0.0066
2025-05-08 2025-03-31 13F COSTAR GROUP COM 22160N109 69,084 -642 -0.92 5,474 9.66 0.0073
2025-02-05 2024-12-31 13F COSTAR GROUP COM 22160N109 69,726 -5,139 -6.86 4,992 -11.62 0.0065
2024-10-28 2024-09-30 13F COSTAR GROUP COM 22160N109 74,865 -286 -0.38 5,648 1.36 0.0073
2024-08-07 2024-06-30 13F COSTAR GROUP COM 22160N109 75,151 -992 -1.30 5,572 -24.26 0.0076
2024-05-08 2024-03-31 13F COSTAR GROUP COM 22160N109 76,143 -21,725 -22.20 7,355 -14.00 0.0103
2024-02-09 2023-12-31 13F COSTAR GROUP COM 22160N109 97,868 3,596 3.81 8,553 17.99 0.0127
2023-11-03 2023-09-30 13F COSTAR GROUP COM 22160N109 94,272 2,544 2.77 7,249 -11.21 0.0118
2023-08-10 2023-06-30 13F COSTAR GROUP COM 22160N109 91,728 -805 -0.87 8,164 28.15 0.0131
2023-05-09 2023-03-31 13F COSTAR GROUP COMMON STOCK 22160N109 92,533 4,545 5.17 6,371 -6.31 0.0108
2023-02-13 2022-12-31 13F COSTAR GROUP COMMON STOCK 22160N109 87,988 -3,308 -3.62 6,800 6.90 0.0120
2022-10-27 2022-09-30 13F COSTAR GROUP COMMON STOCK 22160N109 91,296 1,466 1.63 6,360 17.19 0.0131
2022-08-01 2022-06-30 13F COSTAR GROUP COMMON STOCK 22160N109 89,830 8,112 9.93 5,427 -0.29 0.0105
2022-05-11 2022-03-31 13F COSTAR GROUP COMMON STOCK 22160N109 81,718 3,364 4.29 5,443 -12.10 0.0091
2022-02-11 2021-12-31 13F COSTAR GROUP COMMON STOCK 22160N109 78,354 -542 -0.69 6,192 -8.81 0.0098
2021-11-10 2021-09-30 13F COSTAR GROUP COMMON STOCK 22160N109 78,896 3,117 4.11 6,790 8.19 0.0128
2021-08-05 2021-06-30 13F COSTAR GROUP COMMON STOCK 22160N109 75,779 67,792 848.78 6,276 -4.42 0.0118
2021-04-28 2021-03-31 13F COSTAR GROUP COMMON STOCK 22160N109 7,987 -723 -8.30 6,566 -18.43 0.0133
2021-02-04 2020-12-31 13F COSTAR GROUP COMMON STOCK 22160N109 8,710 407 4.90 8,050 14.25 0.0173
2020-11-10 2020-09-30 13F COSTAR GROUP COMMON STOCK 22160N109 8,303 -2,968 -26.33 7,046 -12.03 0.0172
2020-08-07 2020-06-30 13F COSTAR GROUP COMMON STOCK 22160N109 11,271 -1,176 -9.45 8,010 9.59 0.0210
2020-05-13 2020-03-31 13F COSTAR GROUP COMMON STOCK 22160N109 12,447 -220 -1.74 7,309 -3.55 0.0228
2020-02-04 2019-12-31 13F COSTAR GROUP COMMON STOCK 22160N109 12,667 785 6.61 7,578 7.52 0.0194
2019-11-08 2019-09-30 13F COSTAR GROUP COMMON STOCK 22160N109 11,882 -133 -1.11 7,048 5.87 0.0192
2019-08-13 2019-06-30 13F COSTAR GROUP COMMON STOCK 22160N109 12,015 -359 -2.90 6,657 15.33 0.0186
2019-05-08 2019-03-31 13F COSTAR GROUP COMMON STOCK 22160N109 12,374 -89 -0.71 5,772 37.30 0.0167
2019-02-13 2018-12-31 13F COSTAR GROUP COMMON STOCK 22160N109 12,463 337 2.78 4,204 -17.63 0.0136
2018-10-31 2018-09-30 13F COSTAR GROUP COMMON STOCK 22160N109 12,126 -1,290 -9.62 5,104 -7.80 0.0148
2018-08-08 2018-06-30 13F COSTAR GROUP COMMON STOCK 22160N109 13,416 -337 -2.45 5,536 10.99 0.0170
2018-05-08 2018-03-31 13F COSTAR GROUP COMMON STOCK 22160N109 13,753 -2,655 -16.18 4,988 2.38 0.0153
2018-02-02 2017-12-31 13F COSTAR GROUP COMMON STOCK 22160N109 16,408 -632 -3.71 4,872 6.58 0.0149
2017-11-13 2017-09-30 13F COSTAR GROUP COMMON STOCK 22160N109 17,040 -220 -1.27 4,571 0.46 0.0146
2017-07-19 2017-06-30 13F COSTAR GROUP COMMON STOCK 22160N109 17,260 -1,251 -6.76 4,550 18.64 0.0152
2017-05-03 2017-03-31 13F COSTAR GROUP COMMON STOCK 22160N109 18,511 -363 -1.92 3,835 7.79 0.0131
2017-02-08 2016-12-31 13F COSTAR GROUP COMMON STOCK 22160N109 18,874 30 0.16 3,558 -12.79 0.0128
2016-11-04 2016-09-30 13F COSTAR GROUP COMMON STOCK 22160N109 18,844 -198 -1.04 4,080 -1.99 0.0151
2016-08-10 2016-06-30 13F COSTAR GROUP COMMON STOCK 22160N109 19,042 -834 -4.20 4,163 11.28 0.0158
2016-05-13 2016-03-31 13F COSTAR GROUP COMMON STOCK 22160N109 19,876 -218 -1.08 3,741 -9.92 0.0147
2016-02-10 2015-12-31 13F COSTAR GROUP COMMON STOCK 22160N109 20,094 227 1.14 4,153 20.80 0.0167
2015-11-16 2015-09-30 13F COSTAR GROUP COMMON STOCK 22160N109 19,867 2,874 16.91 3,438 0.53 0.0144
2015-08-10 2015-06-30 13F COSTAR GROUP COMMON STOCK 22160N109 16,993 162 0.96 3,420 2.73 0.0133
2015-05-08 2015-03-31 13F COSTAR GROUP COMMON STOCK 22160N109 16,831 1,278 8.22 3,329 16.60 0.0128
2015-02-13 2014-12-31 13F COSTAR GROUP COMMON STOCK 22160N109 15,553 1,965 14.46 2,855 35.05 0.0110
2014-11-14 2014-09-30 13F COSTAR GROUP COMMON STOCK 22160N109 13,588 -79 -0.58 2,114 -2.17 0.0086
2014-08-14 2014-06-30 13F COSTAR GROUP COMMON STOCK 22160N109 13,667 155 1.15 2,161 -14.38 0.0086
2014-05-14 2014-03-31 13F COSTAR GROUP COMMON STOCK 22160N109 13,512 -894 -6.21 2,524 -5.11 0.0103
2014-02-13 2013-12-31 13F COSTAR GROUP COMMON STOCK 22160N109 14,406 1,851 14.74 2,660 26.19 0.0108
2013-11-07 2013-09-30 13F COSTAR GROUP COMMON STOCK 22160N109 12,555 477 3.95 2,108 35.21 0.0093
2013-08-09 2013-06-30 13F COSTAR GROUP COMMON STOCK 22160N109 12,078 12,078 1,559 0.0071
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.