CoStar Group, Inc.
MX ˙ BMV ˙ US22160N1090
DETTE SYMBOL ER IKKE LÆNGERE AKTIVT
SecurityMX:CSGP / CoStar Group, Inc.
InstitutionNisa Investment Advisors, Llc
Latest Disclosed Ownership42,624 shares
Latest Disclosed Value $ 1,719,452
Nisa Investment Advisors, Llc reports 27.38% increase in ownership of CSGP / CoStar Group, Inc.

On April 30, 2026 - Nisa Investment Advisors, Llc filed a 13F-HR form disclosing ownership of 42,624 shares of CoStar Group, Inc. (MX:CSGP) valued at $1,719,452 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 15, 2026 disclosing 33,462 shares of CoStar Group, Inc.. This represents a change in shares of 27.38% 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)
2026-04-30 2026-03-31 13F COSTAR GROUP COM 22160N109 42,624 9,162 27.38 1,719 -23.57 0.0064
2026-01-15 2025-12-31 13F COSTAR GROUP COM 22160N109 33,462 -5,389 -13.87 2,250 -31.37 0.0074
2025-10-23 2025-09-30 13F COSTAR GROUP COM 22160N109 38,851 -21,827 -35.97 3,278 -32.82 0.0127
2025-07-31 2025-06-30 13F COSTAR GROUP COM 22160N109 60,678 462 0.77 4,879 2.26 0.0220
2025-04-30 2025-03-31 13F COSTAR GROUP COM 22160N109 60,216 4,137 7.38 4,771 18.83 0.0239
2025-01-17 2024-12-31 13F COSTAR GROUP COM 22160N109 56,079 -6,483 -10.36 4,015 -14.94 0.0156
2024-10-24 2024-09-30 13F COSTAR GROUP COM 22160N109 62,562 -3,020 -4.60 4,720 -2.94 0.0279
2024-07-19 2024-06-30 13F COSTAR GROUP COM 22160N109 65,582 -1,190 -1.78 4,862 -24.62 0.0306
2024-05-02 2024-03-31 13F COSTAR GROUP COM 22160N109 66,772 -1,233 -1.81 6,450 8.55 0.0419
2024-01-25 2023-12-31 13F COSTAR GROUP XXX 22160N109 68,005 -402 -0.59 5,943 12.99 0.0421
2023-11-02 2023-09-30 13F COSTAR GROUP XXX 22160N109 68,407 -320 -0.47 5,260 -14.01 0.0401
2023-08-11 2023-06-30 13F COSTAR GROUP COM 22160N109 68,727 10,055 17.14 6,117 152,800.00 0.0449
2023-05-02 2023-03-31 13F COSTAR GROUP COM 22160N109 58,672 4,891 9.09 4 0.00 0.0316
2023-02-02 2022-12-31 13F COSTAR GROUP COM 22160N109 53,781 220 0.41 4 -99.89 0.0328
2022-11-07 2022-09-30 13F COSTAR GROUP COM 22160N109 53,561 411 0.77 3,734 16.29 0.0318
2022-08-03 2022-06-30 13F COSTAR GROUP COM 22160N109 53,150 6,200 13.21 3,211 2.69 0.0281
2022-04-29 2022-03-31 13F COSTAR GROUP COM 22160N109 46,950 -10,300 -17.99 3,127 -22.16 0.0220
2022-02-03 2021-12-31 13F COSTAR GROUP COM 22160N109 57,250 4,400 8.33 4,017 -11.68 0.0301
2021-10-18 2021-09-30 13F COSTAR GROUP COM 22160N109 52,850 0 0.00 4,548 3.91 0.0276
2021-08-06 2021-06-30 13F COSTAR GROUP COM 22160N109 52,850 47,115 821.53 4,377 -7.15 0.0273
2021-04-26 2021-03-31 13F COSTAR GROUP COM 22160N109 5,735 -4,338 -43.07 4,714 -49.37 0.0299
2021-01-25 2020-12-31 13F COSTAR GROUP COM 22160N109 10,073 4,338 75.64 9,310 91.33 0.0599
2020-10-20 2020-09-30 13F COSTAR GROUP COM 22160N109 5,735 0 0.00 4,866 19.38 0.0392
2020-07-27 2020-06-30 13F COSTAR GROUP COM 22160N109 5,735 0 0.00 4,076 21.02 0.0375
2020-04-17 2020-03-31 13F COSTAR GROUP COM 22160N109 5,735 650 12.78 3,368 10.72 0.0375
2020-01-17 2019-12-31 13F COSTAR GROUP COM 22160N109 5,085 50 0.99 3,042 1.84 0.0260
2019-10-17 2019-09-30 13F COSTAR GROUP COM 22160N109 5,035 0 0.00 2,987 7.06 0.0265
2019-07-12 2019-06-30 13F COSTAR GROUP COM 22160N109 5,035 35 0.70 2,790 19.64 0.0265
2019-04-17 2019-03-31 13F COSTAR GROUP COM 22160N109 5,000 0 0.00 2,332 38.23 0.0227
2019-01-17 2018-12-31 13F COSTAR GROUP COM 22160N109 5,000 5,000 1,687 0.0188
2015-02-06 2014-12-31 13F COSTAR GROUP COM 22160N109 0 -2,503 -100.00 0 -100.00
2014-10-24 2014-09-30 13F COSTAR GROUP COM 22160N109 2,503 0 0.00 389 -1.77 0.0055
2014-07-29 2014-06-30 13F COSTAR GROUP COM 22160N109 2,503 0 0.00 396 -15.20 0.0055
2014-05-01 2014-03-31 13F COSTAR GROUP COM 22160N109 2,503 0 0.00 467 1.08 0.0066
2014-01-23 2013-12-31 13F COSTAR GROUP COM 22160N109 2,503 0 0.00 462 10.00 0.0066
2013-10-22 2013-09-30 13F COSTAR GROUP COM 22160N109 2,503 0 0.00 420 30.03 0.0064
2013-07-17 2013-06-30 13F COSTAR GROUP COM 22160N109 2,503 2,503 323 0.0050
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.