CoStar Group, Inc.
IT ˙ BIT ˙ US22160N1090
27,96 € 0,00 (0,00%)
2026-06-03
DEL PRIS
SecurityIT:1CSGP / CoStar Group, Inc.
InstitutionRegions Financial Corp
Latest Disclosed Ownership41,516 shares
Latest Disclosed Value $ 1,674,755
Regions Financial Corp reports 25.77% decrease in ownership of 1CSGP / CoStar Group, Inc.

On May 5, 2026 - Regions Financial Corp filed a 13F-HR form disclosing ownership of 41,516 shares of CoStar Group, Inc. (IT:1CSGP) valued at $1,591,931 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 27, 2026 disclosing 55,929 shares of CoStar Group, Inc.. This represents a change in shares of -25.77% during the quarter. The current value of the position is $1,160,787 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)
2026-05-05 2026-03-31 13F COSTAR GROUP COM 22160N109 41,516 -14,413 -25.77 1,675 -55.48 0.0109
2026-01-27 2025-12-31 13F COSTAR GROUP COM 22160N109 55,929 -3,064 -5.19 3,761 -24.45 0.0241
2025-11-19 2025-09-30 13F/A-1 COSTAR GROUP COM 22160N109 58,993 -811 -1.36 4,977 3.51 0.0324
2025-11-19 2025-09-30 13F COSTAR GROUP COM 22160N109 58,993 -811 4,977 0.0320
2025-07-29 2025-06-30 13F COSTAR GROUP COM 22160N109 59,804 -4,018 -6.30 4,808 -4.91 0.0331
2025-05-08 2025-03-31 13F COSTAR GROUP COM 22160N109 63,822 -3,627 -5.38 5,057 4.72 0.0377
2025-02-14 2024-12-31 13F CoStar Group COM 22160N109 67,449 -1,257 -1.83 4,829 -6.85 0.0355
2024-11-14 2024-09-30 13F CoStar Group COM 22160N109 68,706 1,290 1.91 5,183 3.70 0.0373
2024-07-31 2024-06-30 13F CoStar Group COM 22160N109 67,416 -2,019 -2.91 4,998 -25.48 0.0380
2024-04-23 2024-03-31 13F CoStar Group COM 22160N109 69,435 -17,329 -19.97 6,707 -11.54 0.0509
2024-02-06 2023-12-31 13F CoStar Group COM 22160N109 86,764 3,014 3.60 7,582 17.75 0.0625
2023-11-01 2023-09-30 13F CoStar Group COM 22160N109 83,750 -321 -0.38 6,440 -13.94 0.0579
2023-08-09 2023-06-30 13F CoStar Group COM 22160N109 84,071 17,765 26.79 7,482 186,950.00 0.0646
2023-05-12 2023-03-31 13F CoStar Group COM 22160N109 66,306 22,426 51.11 5 33.33 0.0410
2023-02-06 2022-12-31 13F CoStar Group COM 22160N109 43,880 -20 -0.05 3 -99.90 0.0312
2022-11-03 2022-09-30 13F CoStar Group COM 22160N109 43,900 -21 -0.05 3,058 15.27 0.0308
2022-07-25 2022-06-30 13F CoStar Group COM 22160N109 43,921 -12 -0.03 2,653 -9.33 0.0252
2022-04-25 2022-03-31 13F CoStar Group COM 22160N109 43,933 -451 -1.02 2,926 -16.59 0.0236
2022-01-31 2021-12-31 13F CoStar Group COM 22160N109 44,384 120 0.27 3,508 -7.90 0.0274
2021-11-04 2021-09-30 13F CoStar Group COM 22160N109 44,264 344 0.78 3,809 4.70 0.0329
2021-07-27 2021-06-30 13F CoStar Group COM 22160N109 43,920 39,599 916.43 3,638 2.45 0.0315
2021-06-02 2021-03-31 13F CoStar Group COM 22160N109 4,321 29 0.68 3,551 -10.49 0.0322
2021-02-05 2020-12-31 13F CoStar Group COM 22160N109 4,292 1 0.02 3,967 8.95 0.0382
2020-10-15 2020-09-30 13F CoStar Group COM 22160N109 4,291 -378 -8.10 3,641 9.73 0.0397
2020-07-27 2020-06-30 13F CoStar Group COM 22160N109 4,669 3,281 236.38 3,318 307.12 0.0386
2020-04-29 2020-03-31 13F CoStar Group COM 22160N109 1,388 1,388 815 0.0108
2019-07-19 2019-06-30 13F CoStar Group COM 22160N109 0 -190 -100.00 0 -100.00
2019-04-19 2019-03-31 13F CoStar Group COM 22160N109 190 0 0.00 89 39.06 0.0010
2019-01-28 2018-12-31 13F CoStar Group COM 22160N109 190 -193 -50.39 64 -60.25 0.0008
2018-10-22 2018-09-30 13F CoStar Group COM 22160N109 383 -463 -54.73 161 -53.87 0.0017
2018-07-26 2018-06-30 13F CoStar Group COM 22160N109 846 -919 -52.07 349 -45.55 0.0039
2018-04-18 2018-03-31 13F CoStar Group COM 22160N109 1,765 -93 -5.01 641 16.33 0.0072
2018-01-18 2017-12-31 13F CoStar Group COM 22160N109 1,858 -31 -1.64 551 8.68 0.0060
2017-10-23 2017-09-30 13F COSTAR GROUP COMMON STOCK 22160N109 1,889 -19 -1.00 507 0.80 0.0058
2017-07-31 2017-06-30 13F COSTAR GROUP COMMON STOCK 22160N109 1,908 -63 -3.20 503 22.98 0.0059
2017-05-02 2017-03-31 13F COSTAR GROUP COMMON STOCK 22160N109 1,971 -89 -4.32 409 5.14 0.0048
2017-02-03 2016-12-31 13F COSTAR GROUP COMMON STOCK 22160N109 2,060 -27 -1.29 389 -13.94 0.0048
2016-10-28 2016-09-30 13F COSTAR GROUP COMMON STOCK 22160N109 2,087 0 0.00 452 -0.88 0.0058
2016-07-26 2016-06-30 13F COSTAR GROUP COMMON STOCK 22160N109 2,087 -169 -7.49 456 7.55 0.0059
2016-05-02 2016-03-31 13F COSTAR GROUP COMMON STOCK 22160N109 2,256 -345 -13.26 424 -21.19 0.0056
2016-01-29 2015-12-31 13F COSTAR GROUP COMMON STOCK 22160N109 2,601 40 1.56 538 21.44 0.0072
2015-10-20 2015-09-30 13F COSTAR GROUP COMMON STOCK 22160N109 2,561 41 1.63 443 -12.80 0.0063
2015-07-14 2015-06-30 13F COSTAR GROUP COMMON STOCK 22160N109 2,520 -2,183 -46.42 508 -45.38 0.0067
2015-04-23 2015-03-31 13F COSTAR GROUP COMMON STOCK 22160N109 4,703 2,647 128.75 930 146.03 0.0120
2015-01-21 2014-12-31 13F COSTAR GROUP COMMON STOCK 22160N109 2,056 -1,283 -38.42 378 -27.31 0.0049
2014-10-27 2014-09-30 13F COSTAR GROUP COMMON STOCK 22160N109 3,339 -132 -3.80 520 -5.28 0.0065
2014-07-23 2014-06-30 13F COSTAR GROUP COMMON STOCK 22160N109 3,471 211 6.47 549 -9.70 0.0067
2014-04-17 2014-03-31 13F COSTAR GROUP COMMON STOCK 22160N109 3,260 2,103 181.76 608 185.45 0.0077
2014-01-27 2013-12-31 13F COSTAR GROUP COMMON STOCK 22160N109 1,157 1,157 213 0.0026
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.