CoStar Group, Inc.
IT ˙ BIT ˙ US22160N1090
27,96 € 0,00 (0,00%)
2026-06-03
DEL PRIS
SecurityIT:1CSGP / CoStar Group, Inc.
InstitutionCommerce Bank
Latest Disclosed Ownership20,452 shares
Latest Disclosed Value $ 825,034
Commerce Bank reports 8.39% increase in ownership of 1CSGP / CoStar Group, Inc.

On May 11, 2026 - Commerce Bank filed a 13F-HR form disclosing ownership of 20,452 shares of CoStar Group, Inc. (IT:1CSGP) valued at $784,232 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 18,869 shares of CoStar Group, Inc.. This represents a change in shares of 8.39% during the quarter. The current value of the position is $571,838 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)
2026-05-11 2026-03-31 13F COSTAR GROUP COM 22160N109 20,452 1,583 8.39 825 -34.94 0.0017
2026-02-13 2025-12-31 13F COSTAR GROUP COM 22160N109 18,869 648 3.56 1,269 -17.50 0.0070
2025-11-12 2025-09-30 13F COSTAR GROUP COM 22160N109 18,221 88 0.49 1,537 5.49 0.0086
2025-08-07 2025-06-30 13F COSTAR GROUP COM 22160N109 18,133 6,188 51.80 1,458 54.02 0.0086
2025-05-08 2025-03-31 13F COSTAR GROUP COM 22160N109 11,945 -2,707 -18.48 946 -9.73 0.0060
2025-02-13 2024-12-31 13F COSTAR GROUP COM 22160N109 14,652 -34,245 -70.03 1,049 -71.58 0.0065
2024-11-08 2024-09-30 13F COSTAR GROUP COM 22160N109 48,897 -3,896 -7.38 3,689 -5.77 0.0226
2024-08-12 2024-06-30 13F COSTAR GROUP COM 22160N109 52,793 4,427 9.15 3,914 -16.22 0.0254
2024-05-03 2024-03-31 13F COSTAR GROUP COM 22160N109 48,366 -2,326 -4.59 4,672 5.49 0.0309
2024-02-09 2023-12-31 13F COSTAR GROUP COM 22160N109 50,692 -1,987 -3.77 4,430 9.36 0.0315
2023-11-14 2023-09-30 13F COSTAR GROUP COM 22160N109 52,679 2,512 5.01 4,050 -9.27 0.0319
2023-08-08 2023-06-30 13F COSTAR GROUP COM 22160N109 50,167 -10,822 -17.74 4,465 6.31 0.0334
2023-05-04 2023-03-31 13F COSTAR GROUP COM 22160N109 60,989 10,937 21.85 4,199 8.56 0.0329
2023-02-10 2022-12-31 13F COSTAR GROUP COM 22160N109 50,052 -4,400 -8.08 3,868 2.00 0.0314
2022-11-04 2022-09-30 13F COSTAR GROUP COM 22160N109 54,452 -5,385 -9.00 3,792 4.90 0.0330
2022-08-12 2022-06-30 13F COSTAR GROUP COM 22160N109 59,837 -8,997 -13.07 3,615 -21.14 0.0294
2022-05-09 2022-03-31 13F COSTAR GROUP COM 22160N109 68,834 9,372 15.76 4,584 -2.45 0.0314
2022-02-14 2021-12-31 13F COSTAR GROUP COM 22160N109 59,462 254 0.43 4,699 -7.79 0.0307
2021-11-09 2021-09-30 13F COSTAR GROUP COM 22160N109 59,208 -532 -0.89 5,096 2.99 0.0360
2021-08-09 2021-06-30 13F COSTAR GROUP COM 22160N109 59,740 53,658 882.24 4,948 -1.02 0.0351
2021-05-05 2021-03-31 13F COSTAR GROUP COM 22160N109 6,082 104 1.74 4,999 -9.54 0.0380
2021-02-09 2020-12-31 13F COSTAR GROUP COM 22160N109 5,978 55 0.93 5,526 9.97 0.0447
2020-11-06 2020-09-30 13F COSTAR GROUP COM 22160N109 5,923 -624 -9.53 5,025 8.02 0.0454
2020-08-07 2020-06-30 13F COSTAR GROUP COM 22160N109 6,547 1,178 21.94 4,652 47.54 0.0453
2020-05-08 2020-03-31 13F COSTAR GROUP COM 22160N109 5,369 -444 -7.64 3,153 -9.34 0.0382
2020-02-14 2019-12-31 13F COSTAR GROUP COM 22160N109 5,813 211 3.77 3,478 4.66 0.0331
2019-11-12 2019-09-30 13F COSTAR GROUP COM 22160N109 5,602 4,573 444.41 3,323 482.98 0.0341
2019-08-07 2019-06-30 13F COSTAR GROUP COM 22160N109 1,029 396 62.56 570 93.22 0.0064
2019-05-08 2019-03-31 13F COSTAR GROUP COM 22160N109 633 -173 -21.46 295 8.46 0.0035
2019-02-11 2018-12-31 13F COSTAR GROUP COM 22160N109 806 -208 -20.51 272 -36.30 0.0035
2018-11-02 2018-09-30 13F COSTAR GROUP COM 22160N109 1,014 1,014 427 0.0051
2015-05-06 2015-03-31 13F COSTAR GROUP COM 22160N109 0 -2,141 -100.00 0 -100.00
2015-02-11 2014-12-31 13F COSTAR GROUP COM 22160N109 2,141 -25 -1.15 393 16.62 0.0062
2014-11-06 2014-09-30 13F COSTAR GROUP COM 22160N109 2,166 96 4.64 337 2.74 0.0056
2014-08-05 2014-06-30 13F COSTAR GROUP COM 22160N109 2,070 0 0.00 328 -15.25 0.0054
2014-05-09 2014-03-31 13F COSTAR GROUP COM 22160N109 2,070 125 6.43 387 7.80 0.0066
2014-02-14 2013-12-31 13F COSTAR GROUP COM 22160N109 1,945 -1,385 -41.59 359 -35.78 0.0062
2013-11-05 2013-09-30 13F/A-1 COSTAR GROUP COM 22160N109 20,138 16,758 2,477 0.0447
2013-11-05 2013-09-30 13F/A-2 COSTAR GROUP COM 22160N109 3,330 -50 -1.48 559 28.21 0.0101
2013-11-04 2013-09-30 13F COSTAR GROUP COM 22160N109 20,138 2,477
2013-08-07 2013-06-30 13F COSTAR GROUP COM 22160N109 3,380 215 6.79 436 25.65 0.0081
2013-08-08 2013-03-31 13F/A-1 COSTAR GROUP COM 22160N109 3,165 3,165 347 0.0068
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.