CoStar Group, Inc.
MX ˙ BMV ˙ US22160N1090
DETTE SYMBOL ER IKKE LÆNGERE AKTIVT
SecurityMX:CSGP / CoStar Group, Inc.
InstitutionCIBC Private Wealth Group, LLC
Latest Disclosed Ownership1,361,651 shares
Latest Disclosed Value $ 91,557,413
CIBC Private Wealth Group, LLC reports 25.31% decrease in ownership of CSGP / CoStar Group, Inc.

On February 12, 2026 - CIBC Private Wealth Group, LLC filed a 13F-HR form disclosing ownership of 1,361,651 shares of CoStar Group, Inc. (MX:CSGP) valued at $91,557,413 USD as of December 31, 2025. The entity filed a previous 13F-HR on November 24, 2025 disclosing 1,823,106 shares of CoStar Group, Inc.. This represents a change in shares of -25.31% 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)
2026-02-12 2025-12-31 13F COSTAR GROUP COM 22160N109 1,361,651 -461,455 -25.31 91,557 -40.48 0.1548
2025-11-24 2025-09-30 13F COSTAR GROUP COM 22160N109 1,823,106 -13,189 -0.72 153,815 4.18 0.2633
2025-08-12 2025-06-30 13F COSTAR GROUP COM 22160N109 1,836,295 9,292 0.51 147,638 10.35 0.2637
2025-05-14 2025-03-31 13F COSTAR GROUP COM 22160N109 1,827,003 1,497,912 455.17 133,791 469.88 0.2825
2025-02-12 2024-12-31 13F CoStar Group COM 22160N109 329,091 11,038 3.47 23,477 -2.15 0.0426
2024-11-13 2024-09-30 13F CoStar Group COM 22160N109 318,053 -403,837 -55.94 23,994 -54.24 0.0430
2024-08-09 2024-06-30 13F CoStar Group COM 22160N109 721,890 -341,349 -32.10 52,431 -47.83 0.0983
2024-05-10 2024-03-31 13F CoStar Group COM 22160N109 1,063,239 -9,336 -0.87 100,497 7.22 0.1969
2024-02-13 2023-12-31 13F COSTAR GROUP INC COM COM 22160N109 1,072,575 -159,683 -12.96 93,732 -1.07 0.1985
2023-11-13 2023-09-30 13F COSTAR GROUP INC COM COM 22160N109 1,232,258 -61,466 -4.75 94,748 -17.71 0.2242
2023-11-21 2023-06-30 13F/A-1 COSTAR GROUP INC COM COM 22160N109 1,293,724 128,579 11.04 115,141 43.53 0.2517
2023-08-10 2023-06-30 13F COSTAR GROUP INC COM COM 22160N109 1,293,724 128,579 115,141 0.2518
2023-11-21 2023-03-31 13F/A-1 COSTAR GROUP INC COM COM 22160N109 1,165,145 -41,121 -3.41 80,220 387.10 0.1776
2023-05-12 2023-03-31 13F COSTAR GROUP INC COM COM 22160N109 1,165,145 -41,121 80,220 0.1744
2023-06-01 2022-12-31 13F/A-2 COSTAR GROUP INC COM COM 22160N109 1,206,266 336,938 38.76 16,469 -72.80 0.0553
2023-02-14 2022-12-31 13F/A-1 COSTAR GROUP INC COM COM 22160N109 1,206,266 336,938 93,220 0.1952
2023-02-13 2022-12-31 13F COSTAR GROUP INC COM COM 22160N109 1,206,266 336,938 93,220 0.0001
2022-11-15 2022-09-30 13F COSTAR GROUP INC COM COM 22160N109 869,328 177,401 25.64 60,549 44.86 0.1631
2022-08-03 2022-06-30 13F COSTAR GROUP COM 22160N109 691,927 -25,770 -3.59 41,798 -12.57 0.1086
2022-05-16 2022-03-31 13F COSTAR GROUP COM 22160N109 717,697 -708,308 -49.67 47,807 -57.58 0.1043
2022-04-04 2021-12-31 13F/A-1 COSTAR GROUP COM 22160N109 1,426,005 -20,392 -1.41 112,697 -9.46 0.2337
2022-02-08 2021-12-31 13F COSTAR GROUP COM 22160N109 1,426,005 -20,392 112,697 0.2337
2021-11-12 2021-09-30 13F COSTAR GROUP COM 22160N109 1,446,397 341,960 30.96 124,476 36.09 0.2896
2021-08-16 2021-06-30 13F COSTAR GROUP COM 22160N109 1,104,437 956,184 644.97 91,469 -24.93 0.2101
2021-05-12 2021-03-31 13F COSTAR GROUP COM 22160N109 148,253 -53,639 -26.57 121,847 -34.70 0.3068
2021-02-12 2020-12-31 13F COSTAR GROUP COM 22160N109 201,892 -24,672 -10.89 186,605 -2.93 0.4933
2020-11-03 2020-09-30 13F/A-1 COSTAR GROUP COM 22160N109 226,564 204,364 920.56 192,241 1,118.49 0.5889
2020-08-13 2020-06-30 13F COSTAR GROUP INC COM Com 22160N109 22,200 -194,706 -89.77 15,777 -87.61 0.0767
2020-05-15 2020-03-31 13F COSTAR GROUP COM 22160N109 216,906 -6,108 -2.74 127,368 -4.54 0.5462
2020-01-30 2019-12-31 13F COSTAR GROUP COM 22160N109 223,014 -1,050 -0.47 133,429 0.39 0.4352
2019-10-16 2019-09-30 13F COSTAR GROUP COM 22160N109 224,064 37 0.02 132,914 7.08 0.4675
2019-07-31 2019-06-30 13F COSTAR GROUP COM 22160N109 224,027 43,693 24.23 124,124 47.57 0.4356
2019-05-10 2019-03-31 13F COSTAR GROUP COM 22160N109 180,334 88,258 95.85 84,111 170.79 0.3245
2019-02-05 2018-12-31 13F COSTAR GROUP COM 22160N109 92,076 42,319 85.05 31,061 48.33 0.1385
2018-11-14 2018-09-30 13F COSTAR GROUP COM 22160N109 49,757 49,747 497,470.00 20,940 523,400.00 0.0794
2018-08-02 2018-06-30 13F COSTAR GROUP COM 22160N109 10 10 4 0.0000
2018-05-17 2018-03-31 13F COSTAR GROUP COM 22160N109 0 -8 -100.00 0 -100.00
2018-02-12 2017-12-31 13F COSTAR GROUP COM 22160N109 8 8 2 0.0000
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.