CoStar Group, Inc.
MX ˙ BMV ˙ US22160N1090
DETTE SYMBOL ER IKKE LÆNGERE AKTIVT
SecurityMX:CSGP / CoStar Group, Inc.
InstitutionAdvisorNet Financial, Inc
Latest Disclosed Ownership25 shares
Latest Disclosed Value $ 1,009
AdvisorNet Financial, Inc reports 150.00% increase in ownership of CSGP / CoStar Group, Inc.

On April 17, 2026 - AdvisorNet Financial, Inc filed a 13F-HR form disclosing ownership of 25 shares of CoStar Group, Inc. (MX:CSGP) valued at $1,009 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 20, 2026 disclosing 10 shares of CoStar Group, Inc..

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)
2026-04-17 2026-03-31 13F COSTAR GROUP INC COM Stock 22160N109 25 15 150.00 1 0.0001
2026-01-20 2025-12-31 13F COSTAR GROUP INC COM Stock 22160N109 10 -10 -50.00 1 -100.00 0.0000
2025-10-09 2025-09-30 13F COSTAR GROUP INC COM Stock 22160N109 20 -60 -75.00 2 -83.33 0.0001
2025-07-14 2025-06-30 13F COSTAR GROUP INC COM Stock 22160N109 80 -8 -9.09 6 0.00 0.0004
2025-04-07 2025-03-31 13F COSTAR GROUP INC COM Stock 22160N109 88 18 25.71 7 20.00 0.0005
2025-01-13 2024-12-31 13F COSTAR GROUP INC COM Stock 22160N109 70 -39 -35.78 5 -37.50 0.0004
2024-10-15 2024-09-30 13F COSTAR GROUP INC COM Stock 22160N109 109 46 73.02 8 100.00 0.0006
2024-07-16 2024-06-30 13F COSTAR GROUP INC COM Stock 22160N109 63 -24 -27.59 5 -50.00 0.0004
2024-04-12 2024-03-31 13F COSTAR GROUP INC COM Stock 22160N109 87 31 55.36 8 100.00 0.0008
2024-01-19 2023-12-31 13F COSTAR GROUP INC COM Stock 22160N109 56 20 55.56 5 100.00 0.0005
2023-10-12 2023-09-30 13F COSTAR GROUP INC COM Stock 22160N109 36 -22 -37.93 3 -60.00 0.0003
2023-07-14 2023-06-30 13F COSTAR GROUP INC COM Stock 22160N109 58 -44 -43.14 5 -28.57 0.0004
2023-04-28 2023-03-31 13F COSTAR GROUP INC COM Stock 22160N109 102 -93 -47.69 7 -53.33 0.0006
2023-01-13 2022-12-31 13F COSTAR GROUP INC COM Stock 22160N109 195 150 333.33 15 400.00 0.0015
2022-10-04 2022-09-30 13F COSTAR GROUP INC COM Stock 22160N109 45 40 800.00 3 0.0003
2022-07-07 2022-06-30 13F COSTAR GROUP INC COM Stock 22160N109 5 -5 -50.00 0 -100.00
2022-04-14 2022-03-31 13F COSTAR GROUP INC COM Stock 22160N109 10 -15 -60.00 1 -50.00 0.0001
2022-01-19 2021-12-31 13F COSTAR GROUP INC COM Stock 22160N109 25 25 2 0.0001
2021-02-04 2020-12-31 13F COSTAR GROUP INC COM Stock 22160N109 0 -175 -100.00 0 -100.00
2020-11-06 2020-09-30 13F COSTAR GROUP INC COM Stock 22160N109 175 1 0.57 150 20.97 0.0129
2020-08-26 2020-06-30 13F COSTAR GROUP INC COM Stock 22160N109 174 0 0.00 124 21.57 0.0100
2020-05-14 2020-03-31 13F COSTAR GROUP INC COM Stock 22160N109 174 3 1.75 102 0.00 0.0094
2020-02-12 2019-12-31 13F COSTAR GROUP INC COM Stock 22160N109 171 18 11.76 102 12.09 0.0087
2019-10-23 2019-09-30 13F COSTAR GROUP INC COM Stock 22160N109 153 60 64.52 91 75.00 0.0084
2019-07-15 2019-06-30 13F COSTAR GROUP INC COM Stock 22160N109 93 93 52 0.0058
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.