CoStar Group, Inc.
IT ˙ BIT ˙ US22160N1090
27,96 € 0,00 (0,00%)
2026-06-03
DEL PRIS
SecurityIT:1CSGP / CoStar Group, Inc.
InstitutionQuantinno Capital Management LP
Latest Disclosed Ownership340,154 shares
Latest Disclosed Value $ 13,721,832
Quantinno Capital Management LP reports 68.27% increase in ownership of 1CSGP / CoStar Group, Inc.

On May 15, 2026 - Quantinno Capital Management LP filed a 13F-HR form disclosing ownership of 340,154 shares of CoStar Group, Inc. (IT:1CSGP) valued at $13,043,205 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 202,148 shares of CoStar Group, Inc.. This represents a change in shares of 68.27% during the quarter. The current value of the position is $9,510,706 USD.

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)
2026-05-15 2026-03-31 13F COSTAR GROUP COM 22160N109 340,154 138,006 68.27 13,722 0.95 0.0229
2026-02-17 2025-12-31 13F COSTAR GROUP COM 22160N109 202,148 84,437 71.73 13,592 36.86 0.0273
2025-11-14 2025-09-30 13F COSTAR GROUP COM 22160N109 117,711 30,583 35.10 9,931 41.77 0.0271
2025-08-14 2025-06-30 13F COSTAR GROUP COM 22160N109 87,128 27,712 46.64 7,005 48.82 0.0303
2025-05-12 2025-03-31 13F COSTAR GROUP COM 22160N109 59,416 36,409 158.25 4,708 185.79 0.0307
2025-02-14 2024-12-31 13F COSTAR GROUP COM 22160N109 23,007 8,081 54.14 1,647 46.27 0.0162
2024-11-14 2024-09-30 13F COSTAR GROUP COM 22160N109 14,926 6,175 70.56 1,126 73.77 0.0146
2024-08-14 2024-06-30 13F COSTAR GROUP COM 22160N109 8,751 -6,711 -43.40 649 -56.63 0.0117
2024-05-14 2024-03-31 13F COSTAR GROUP COM 22160N109 15,462 1,084 7.54 1,494 18.95 0.0325
2024-02-14 2023-12-31 13F COSTAR GROUP COM 22160N109 14,378 -349 -2.37 1,256 10.95 0.0440
2023-11-14 2023-09-30 13F COSTAR GROUP COM 22160N109 14,727 -651 -4.23 1,132 -17.31 0.0515
2023-08-04 2023-06-30 13F COSTAR GROUP COM 22160N109 15,378 1,960 14.61 1,369 48.16 0.0782
2023-05-03 2023-03-31 13F COSTAR GROUP COM 22160N109 13,418 -818 -5.75 924 -16.00 0.0611
2023-02-13 2022-12-31 13F COSTAR GROUP COM 22160N109 14,236 1,285 9.92 1,100 21.95 0.0821
2022-11-08 2022-09-30 13F COSTAR GROUP COM 22160N109 12,951 -6,630 -33.86 902 -23.75 0.1161
2022-08-15 2022-06-30 13F COSTAR GROUP COM 22160N109 19,581 19,581 1,183 0.1707
2020-11-16 2020-09-30 13F COSTAR GROUP COM 22160N109 0 -440 -100.00 0 -100.00
2020-08-14 2020-06-30 13F COSTAR GROUP COM 22160N109 440 58 15.18 313 39.73 0.3087
2020-05-15 2020-03-31 13F COSTAR GROUP COM 22160N109 382 382 224 0.1399
2019-08-14 2019-06-30 13F COSTAR GROUP COM 22160N109 0 -891 -100.00 0 -100.00
2019-05-14 2019-03-31 13F COSTAR GROUP COM 22160N109 891 891 416 0.2665
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.