CoStar Group, Inc.
MX ˙ BMV ˙ US22160N1090
DETTE SYMBOL ER IKKE LÆNGERE AKTIVT
SecurityMX:CSGP / CoStar Group, Inc.
InstitutionUbs Asset Management Americas Inc
Latest Disclosed Ownership2,425,693 shares
Latest Disclosed Value $ 97,852,455
Ubs Asset Management Americas Inc reports 0.29% decrease in ownership of CSGP / CoStar Group, Inc.

On May 13, 2026 - Ubs Asset Management Americas Inc filed a 13F-HR form disclosing ownership of 2,425,693 shares of CoStar Group, Inc. (MX:CSGP) valued at $97,852,455 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 2,432,817 shares of CoStar Group, Inc.. This represents a change in shares of -0.29% 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.

Upgrade to unlock premium data and export to Excel .

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 2,425,693 -7,124 -0.29 97,852 -40.18 0.0030
2026-02-13 2025-12-31 13F COSTAR GROUP COM 22160N109 2,432,817 -26,793 -1.09 163,583 -21.17 0.0346
2025-11-14 2025-09-30 13F COSTAR GROUP COM 22160N109 2,459,610 -522,088 -17.51 207,517 -13.44 0.0451
2025-08-14 2025-06-30 13F COSTAR GROUP COM 22160N109 2,981,698 430,612 16.88 239,729 18.61 0.0485
2025-05-19 2025-03-31 13F COSTAR GROUP COM 22160N109 2,551,086 -96,763 -3.65 202,123 6.63 0.0518
2025-02-14 2024-12-31 13F COSTAR GROUP COM 22160N109 2,647,849 551,594 26.31 189,560 19.87 0.0442
2024-11-14 2024-09-30 13F COSTAR GROUP COM 22160N109 2,096,255 9,999 0.48 158,141 2.24 0.0406
2024-08-14 2024-06-30 13F COSTAR GROUP COM 22160N109 2,086,256 576,608 38.19 154,675 6.06 0.0444
2024-05-15 2024-03-31 13F COSTAR GROUP EQUITY US CM 22160N109 1,509,648 17,075 1.14 145,832 11.80 0.0518
2024-02-14 2023-12-31 13F COSTAR GROUP EQUITY US CM 22160N109 1,492,573 100,368 7.21 130,436 21.85 0.0513
2023-11-13 2023-09-30 13F COSTAR GROUP EQUITY US CM 22160N109 1,392,205 154,431 12.48 107,047 25.61 0.0480
2023-08-11 2023-06-30 13F COSTAR GROUP EQUITY US CM 22160N109 1,237,774 0 0.00 85,221 0.00 0.0413
2023-05-15 2023-03-31 13F COSTAR GROUP EQUITY US CM 22160N109 1,237,774 23,794 1.96 85,221 -9.16 0.0413
2023-02-14 2022-12-31 13F COSTAR GROUP EQUITY US CM 22160N109 1,213,980 15,847 1.32 93,816 12.42 0.0492
2022-11-14 2022-09-30 13F COSTAR GROUP EQUITY US CM 22160N109 1,198,133 33,555 2.88 83,450 18.62 0.0468
2022-08-12 2022-06-30 13F COSTAR GROUP EQUITY US CM 22160N109 1,164,578 -80,685 -6.48 70,352 -15.18 0.0368
2022-05-16 2022-03-31 13F COSTAR GROUP EQUITY US CM 22160N109 1,245,263 25,740 2.11 82,947 -13.94 0.0355
2022-02-14 2021-12-31 13F COSTAR GROUP EQUITY US CM 22160N109 1,219,523 1,311 0.11 96,379 -8.07 0.0369
2021-11-15 2021-09-30 13F COSTAR GROUP EQUITY US CM 22160N109 1,218,212 -9,589 -0.78 104,839 3.10 0.0435
2021-08-16 2021-06-30 13F COSTAR GROUP EQUITY US CM 22160N109 1,227,801 1,088,587 781.95 101,686 -11.13 0.0435
2021-05-14 2021-03-31 13F COSTAR GROUP EQUITY US CM 22160N109 139,214 -37,145 -21.06 114,419 -29.81 0.0506
2021-03-01 2020-12-31 13F/A-1 COSTAR GROUP EQUITY US CM 22160N109 176,359 15,882 9.90 163,005 19.71 0.0764
2021-02-17 2020-12-31 13F COSTAR GROUP EQUITY US CM 22160N109 160,477 0 136,166 12.8428
2020-11-13 2020-09-30 13F COSTAR GROUP EQUITY US CM 22160N109 160,477 42,532 36.06 136,166 62.45 0.0732
2020-08-14 2020-06-30 13F COSTAR GROUP EQUITY US CM 22160N109 117,945 -9,591 -7.52 83,820 11.92 0.0512
2020-05-15 2020-03-31 13F COSTAR GROUP EQUITY US CM 22160N109 127,536 9,261 7.83 74,890 5.83 0.0539
2020-02-14 2019-12-31 13F COSTAR GROUP EQUITY US CM 22160N109 118,275 1,973 1.70 70,764 2.57 0.0433
2019-11-14 2019-09-30 13F COSTAR GROUP EQUITY US CM 22160N109 116,302 8,567 7.95 68,990 15.58 0.0465
2019-08-15 2019-06-30 13F COSTAR GROUP EQUITY US CM 22160N109 107,735 -1,467 -1.34 59,692 17.20 0.0426
2019-05-14 2019-03-31 13F COSTAR GROUP EQUITY US CM 22160N109 109,202 -16,266 -12.96 50,934 20.34 0.0378
2019-02-13 2018-12-31 13F COSTAR GROUP EQUITY US CM 22160N109 125,468 15,742 14.35 42,325 -8.34 0.0365
2018-11-13 2018-09-30 13F COSTAR GROUP EQUITY US CM 22160N109 109,726 2,995 2.81 46,177 4.85 0.0343
2018-08-14 2018-06-30 13F COSTAR GROUP EQUITY US CM 22160N109 106,731 6,712 6.71 44,040 21.41 0.0338
2018-05-14 2018-03-31 13F COSTAR GROUP EQUITY US CM 22160N109 100,019 6,331 6.76 36,275 30.39 0.0286
2018-02-09 2017-12-31 13F COSTAR GROUP EQUITY US CM 22160N109 93,688 10,807 13.04 27,821 25.13 0.0236
2017-11-13 2017-09-30 13F COSTAR GROUP EQUITY US CM 22160N109 82,881 3,534 4.45 22,233 6.30 0.0203
2017-08-11 2017-06-30 13F COSTAR GROUP EQUITY US CM 22160N109 79,347 7,796 10.90 20,916 41.07 0.0202
2017-05-04 2017-03-31 13F COSTAR GROUP EQUITY US CM 22160N109 71,551 7,223 11.23 14,827 22.28 0.0151
2017-03-09 2016-12-31 13F/A-1 COSTAR GROUP COM 22160N109 64,328 39,105 155.04 12,125 121.99 0.0136
2017-02-14 2016-12-31 13F COSTAR GROUP COM 22160N109 64,328 12,125
2016-11-04 2016-09-30 13F COSTAR GROUP EQUITY US CM 22160N109 25,223 500 2.02 5,462 1.04 0.0059
2016-11-29 2016-06-30 13F/A-1 COSTAR GROUP EQUITY US CM 22160N109 24,723 1,205 5.12 5,406 22.14 0.0061
2016-08-09 2016-06-30 13F COSTAR GROUP EQUITY US CM 22160N109 24,723 5,406
2016-05-12 2016-03-31 13F COSTAR GROUP EQUITY US CM 22160N109 23,518 -2,914 -11.02 4,426 -19.00 0.0051
2016-02-12 2015-12-31 13F COSTAR GROUP EQUITY US CM 22160N109 26,432 658 2.55 5,464 22.51 0.0062
2015-10-29 2015-09-30 13F COSTAR GROUP EQUITY US CM 22160N109 25,774 5,390 26.44 4,460 8.73 0.0049
2015-08-12 2015-06-30 13F COSTAR GROUP EQUITY US CM 22160N109 20,384 1,461 7.72 4,102 9.59 0.0039
2015-05-04 2015-03-31 13F COSTAR GROUP EQUITY US CM 22160N109 18,923 18,923 0.00 3,743 0.0036
2015-02-02 2014-12-31 13F COSTAR GROUP EQUITY US CM 22160N109 0 -16,523 -100.00 0 -100.00
2014-10-28 2014-09-30 13F COSTAR GROUP EQUITY US CM 22160N109 16,523 1,600 10.72 2,570 8.90 0.0025
2014-08-13 2014-06-30 13F COSTAR GROUP EQUITY US CM 22160N109 14,923 2,284 18.07 2,360 0.00 0.0024
2014-05-23 2014-03-31 13F COSTAR GROUP EQUITY US CM 22160N109 12,639 1,565 14.13 2,360 15.46 0.0025
2014-01-31 2013-12-31 13F COSTAR GROUP EQUITY US CM 22160N109 11,074 200 1.84 2,044 11.94 0.0023
2013-11-08 2013-09-30 13F COSTAR GROUP EQUITY US CM 22160N109 10,874 2,520 30.17 1,826 69.39 0.0023
2013-08-15 2013-06-30 13F/A-1 COSTAR GROUP EQUITY US CM 22160N109 8,354 8,354 1,078 0.0014
2013-08-13 2013-06-30 13F COSTAR GROUP EQUITY US CM 22160N109 8,354 1,078 0.0014
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.