CoStar Group, Inc.
MX ˙ BMV ˙ US22160N1090
DETTE SYMBOL ER IKKE LÆNGERE AKTIVT
SecurityMX:CSGP / CoStar Group, Inc.
InstitutionCIBC Asset Management Inc
Latest Disclosed Ownership177,079 shares
Latest Disclosed Value $ 7,143,367
CIBC Asset Management Inc reports 11.41% decrease in ownership of CSGP / CoStar Group, Inc.

On May 12, 2026 - CIBC Asset Management Inc filed a 13F-HR form disclosing ownership of 177,079 shares of CoStar Group, Inc. (MX:CSGP) valued at $7,143,367 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 199,891 shares of CoStar Group, Inc.. This represents a change in shares of -11.41% 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)
2026-05-12 2026-03-31 13F COSTAR GROUP COM 22160N109 177,079 -22,812 -11.41 7,143 -46.85 0.0175
2026-02-10 2025-12-31 13F COSTAR GROUP COM 22160N109 199,891 46,182 30.05 13,441 3.64 0.0324
2025-10-31 2025-09-30 13F COSTAR GROUP COM 22160N109 153,709 1,055 0.69 12,968 5.66 0.0375
2025-08-14 2025-06-30 13F COSTAR GROUP COM 22160N109 152,654 -4,502 -2.86 12,273 -1.43 0.0380
2025-05-13 2025-03-31 13F COSTAR GROUP COM 22160N109 157,156 25,482 19.35 12,451 32.09 0.0413
2025-01-31 2024-12-31 13F COSTAR GROUP COM 22160N109 131,674 4,583 3.61 9,427 -1.68 0.0309
2024-11-06 2024-09-30 13F COSTAR GROUP COM 22160N109 127,091 7,304 6.10 9,588 7.95 0.0311
2024-08-01 2024-06-30 13F COSTAR GROUP COM 22160N109 119,787 -682 -0.57 8,881 -23.68 0.0316
2024-05-09 2024-03-31 13F COSTAR GROUP COM 22160N109 120,469 6,567 5.77 11,637 16.92 0.0404
2024-02-13 2023-12-31 13F COSTAR GROUP COM 22160N109 113,902 113 0.10 9,954 13.76 0.0372
2023-10-30 2023-09-30 13F COSTAR GROUP COM 22160N109 113,789 11,722 11.48 8,749 -3.68 0.0363
2023-08-14 2023-06-30 13F COSTAR GROUP COM 22160N109 102,067 -558 -0.54 9,084 28.56 0.0348
2023-05-12 2023-03-31 13F COSTAR GROUP COM 22160N109 102,625 2,456 2.45 7,066 -8.73 0.0280
2023-02-13 2022-12-31 13F COSTAR GROUP COM 22160N109 100,169 47,288 89.42 7,741 110.18 0.0325
2022-11-03 2022-09-30 13F COSTAR GROUP COM 22160N109 52,881 35,080 197.07 3,683 242.60 0.0162
2022-08-09 2022-06-30 13F COSTAR GROUP COM 22160N109 17,801 -260 -1.44 1,075 -10.64 0.0044
2022-05-06 2022-03-31 13F COSTAR GROUP COM 22160N109 18,061 100 0.56 1,203 -15.22 0.0042
2022-02-08 2021-12-31 13F COSTAR GROUP COM 22160N109 17,961 1,973 12.34 1,419 3.13 0.0052
2021-11-09 2021-09-30 13F COSTAR GROUP COM 22160N109 15,988 1,268 8.61 1,376 12.88 0.0055
2021-08-16 2021-06-30 13F COSTAR GROUP COM 22160N109 14,720 13,252 902.72 1,219 0.99 0.0049
2021-05-14 2021-03-31 13F COSTAR GROUP COM 22160N109 1,468 103 7.55 1,207 -4.36 0.0051
2021-02-03 2020-12-31 13F COSTAR GROUP COM 22160N109 1,365 0 0.00 1,262 8.98 0.0059
2020-11-05 2020-09-30 13F COSTAR GROUP COM 22160N109 1,365 -4,195 -75.45 1,158 -70.69 0.0059
2020-07-28 2020-06-30 13F COSTAR GROUP COM 22160N109 5,560 396 7.67 3,951 30.31 0.0232
2020-04-30 2020-03-31 13F COSTAR GROUP COM 22160N109 5,164 1,643 46.66 3,032 43.90 0.0214
2020-02-14 2019-12-31 13F COSTAR GROUP COM 22160N109 3,521 2,124 152.04 2,107 154.16 0.0119
2019-10-30 2019-09-30 13F COSTAR GROUP COM 22160N109 1,397 -33 -2.31 829 4.67 0.0049
2019-08-05 2019-06-30 13F COSTAR GROUP COM 22160N109 1,430 0 0.00 792 18.74 0.0047
2019-05-06 2019-03-31 13F COSTAR GROUP COM 22160N109 1,430 -12 -0.83 667 37.24 0.0041
2019-02-12 2018-12-31 13F COSTAR GROUP COM 22160N109 1,442 -5 -0.35 486 -20.20 0.0036
2018-11-02 2018-09-30 13F COSTAR GROUP COM 22160N109 1,447 -20 -1.36 609 0.66 0.0038
2018-08-09 2018-06-30 13F COSTAR GROUP COM 22160N109 1,467 184 14.34 605 30.11 0.0038
2018-04-30 2018-03-31 13F COSTAR GROUP COM 22160N109 1,283 188 17.17 465 43.08 0.0030
2018-02-02 2017-12-31 13F COSTAR GROUP COM 22160N109 1,095 0 0.00 325 10.54 0.0020
2017-11-06 2017-09-30 13F COSTAR GROUP COM 22160N109 1,095 55 5.29 294 7.30 0.0018
2017-07-27 2017-06-30 13F COSTAR GROUP COM 22160N109 1,040 0 0.00 274 26.85 0.0019
2017-05-12 2017-03-31 13F COSTAR GROUP COM 22160N109 1,040 1,040 216 0.0015
2017-02-08 2016-12-31 13F COSTAR GROUP COM 22160N109 0 -1,040 -100.00 0 -100.00
2016-10-19 2016-09-30 13F COSTAR GROUP COM 22160N109 1,040 0 0.00 225 -0.88 0.0017
2016-08-02 2016-06-30 13F COSTAR GROUP COM 22160N109 1,040 1,040 0.00 227 0.0017
2016-02-02 2015-12-31 13F COSTAR GROUP COM 22160N109 0 0 0 0.0000
2015-11-03 2015-09-30 13F COSTAR GROUP COM 22160N109 0 -1,988 -100.00 0 -100.00
2014-05-09 2014-03-31 13F COSTAR GROUP COM 22160N109 1,988 1,988 371 0.0022
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.