CoStar Group, Inc.
MX ˙ BMV ˙ US22160N1090
DETTE SYMBOL ER IKKE LÆNGERE AKTIVT
SecurityMX:CSGP / CoStar Group, Inc.
InstitutionEnsign Peak Advisors, Inc
Latest Disclosed Ownership2,734,289 shares
Latest Disclosed Value $ 110,301,218
Ensign Peak Advisors, Inc reports 372.77% increase in ownership of CSGP / CoStar Group, Inc.

On May 13, 2026 - Ensign Peak Advisors, Inc filed a 13F-HR form disclosing ownership of 2,734,289 shares of CoStar Group, Inc. (MX:CSGP) valued at $110,301,218 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 578,356 shares of CoStar Group, Inc.. This represents a change in shares of 372.77% 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)
2026-05-13 2026-03-31 13F COSTAR GROUP COM 22160N109 2,734,289 2,155,933 372.77 110,301 183.64 0.2055
2026-02-12 2025-12-31 13F COSTAR GROUP COM 22160N109 578,356 -119,645 -17.14 38,889 -33.97 0.0687
2025-11-13 2025-09-30 13F COSTAR GROUP COM 22160N109 698,001 -73,377 -9.51 58,890 -5.04 0.0966
2025-08-12 2025-06-30 13F COSTAR GROUP COM 22160N109 771,378 -63,831 -7.64 62,019 -6.28 0.1062
2025-05-14 2025-03-31 13F COSTAR GROUP COM 22160N109 835,209 -53,225 -5.99 66,174 4.04 0.1266
2025-02-14 2024-12-31 13F COSTAR GROUP COM 22160N109 888,434 -177,931 -16.69 63,603 -20.94 0.1130
2024-11-14 2024-09-30 13F COSTAR GROUP COM 22160N109 1,066,365 6,840 0.65 80,447 2.41 0.1415
2024-08-13 2024-06-30 13F COSTAR GROUP COM 22160N109 1,059,525 -359,406 -25.33 78,553 -42.69 0.1436
2024-05-14 2024-03-31 13F COSTAR GROUP COM 22160N109 1,418,931 -142,945 -9.15 137,069 0.42 0.2503
2024-02-14 2023-12-31 13F COSTAR GROUP COM 22160N109 1,561,876 -212,038 -11.95 136,492 0.07 0.2702
2023-11-13 2023-09-30 13F COSTAR GROUP COM 22160N109 1,773,914 44,827 2.59 136,396 -11.37 0.2912
2023-08-14 2023-06-30 13F COSTAR GROUP COM 22160N109 1,729,087 53,520 3.19 153,889 33.40 0.3120
2023-05-15 2023-03-31 13F COSTAR GROUP COM 22160N109 1,675,567 221,032 15.20 115,363 2.63 0.2496
2023-02-13 2022-12-31 13F CoStar Group COM 22160N109 1,454,535 338,238 30.30 112,406 44.57 0.2532
2022-11-14 2022-09-30 13F CoStar Group COM 22160N109 1,116,297 -10,119 -0.90 77,751 14.26 0.1931
2022-08-12 2022-06-30 13F CoStar Group COM 22160N109 1,126,416 -28,570 -2.47 68,048 -11.55 0.1617
2022-05-16 2022-03-31 13F CoStar Group COM 22160N109 1,154,986 -523,698 -31.20 76,934 -42.01 0.1564
2022-02-11 2021-12-31 13F CoStar Group COM 22160N109 1,678,684 191,602 12.88 132,666 3.66 0.2536
2021-11-12 2021-09-30 13F CoStar Group COM 22160N109 1,487,082 -241,908 -13.99 127,979 -10.63 0.2667
2021-08-13 2021-06-30 13F CoStar Group COM 22160N109 1,728,990 1,544,759 838.49 143,195 -5.43 0.2889
2021-05-12 2021-03-31 13F CoStar Group COM 22160N109 184,231 11,101 6.41 151,419 -5.38 0.3255
2021-02-12 2020-12-31 13F CoStar Group COM 22160N109 173,130 -25,310 -12.75 160,022 -4.96 0.3630
2020-11-12 2020-09-30 13F CoStar Group COM 22160N109 198,440 -12,274 -5.82 168,380 12.44 0.4254
2020-08-12 2020-06-30 13F CoStar Group COM 22160N109 210,714 1,141 0.54 149,750 21.68 0.4070
2020-05-11 2020-03-31 13F CoStar Group COM 22160N109 209,573 -7,873 -3.62 123,064 -5.41 0.4121
2020-02-14 2019-12-31 13F CoStar Group COM 22160N109 217,446 217,446 130,097 0.3436
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.