Costar Group, Inc.

Robeco Institutional Asset Management B.V. CSGP

Report date

12/31/2025

Quarter

2025 Q4

Filed

1/23/2026

Shares

68,155

Value ($000)

4,583

Weight

0.0%

2017 Q2 - 2025 Q4 (35 filings)

Shares History

History scope: non-option holdings only (PUT/CALL rows excluded).

All 13F Holders	Filing date	Value ($000s)	% of Holdings	Shares	Reporting period
2025 Q4	1/23/2026	4,583	0.0%	68,155	12/31/2025
2025 Q3	10/22/2025	6,300	0.0%	74,668	9/30/2025
2025 Q2	7/18/2025	6,640	0.0%	82,584	6/30/2025
2025 Q1	4/23/2025	7,444	0.0%	93,955	3/31/2025
2024 Q4	1/23/2025	8,552	0.0%	119,458	12/31/2024
2024 Q3	10/29/2024	9,660	0.0%	128,049	9/30/2024
2024 Q2	7/23/2024	22,722	0.0%	306,470	6/30/2024
2024 Q1	4/24/2024	4,181	0.0%	43,277	3/31/2024
2023 Q4	2/14/2024	5,251	0.0%	60,086	12/31/2023
2023 Q3	10/24/2023	7,433	0.0%	96,670	9/30/2023
2023 Q2	7/24/2023	6,523	0.0%	73,296	6/30/2023
2023 Q1	5/4/2023	5,020	0.0%	72,909	3/31/2023
2022 Q4	2/7/2023	34,008	0.1%	440,063	12/31/2022
2022 Q3	12/1/2022	14,078	0.0%	202,144	9/30/2022
2022 Q2	12/1/2022	6,161	0.0%	101,982	6/30/2022
2022 Q1	12/1/2022	6,783	0.0%	101,830	3/31/2022
2021 Q4	12/1/2022	8,062	0.0%	102,029	12/31/2021
2021 Q3	12/1/2022	8,774	0.0%	101,937	9/30/2021
2021 Q2	12/1/2022	10,626	0.0%	128,300	6/30/2021
2021 Q1	12/1/2022	10,652	0.0%	12,959	3/31/2021
2020 Q4	12/1/2022	11,013	0.0%	11,916	12/31/2020
2020 Q3	1/19/2021	8,974	0.0%	10,576	9/30/2020
2020 Q2	1/19/2021	7,658	0.0%	10,776	6/30/2020
2020 Q1	1/19/2021	7,305	0.0%	12,440	3/31/2020
2019 Q4	1/19/2021	8,413	0.0%	14,061	12/31/2019
2019 Q3	1/19/2021	13,254	0.0%	22,343	9/30/2019
2019 Q2	1/19/2021	10,965	0.0%	19,787	6/30/2019
2019 Q1	1/19/2021	5,928	0.0%	12,709	3/31/2019
2018 Q4	1/19/2021	4,171	0.0%	12,369	12/31/2018
2018 Q3	1/19/2021	5,849	0.0%	13,897	9/30/2018
2018 Q2	1/19/2021	4,488	0.0%	10,880	6/30/2018
2018 Q1	1/19/2021	4,914	0.0%	13,550	3/31/2018
2017 Q4	1/19/2021	4,864	0.0%	16,382	12/31/2017
2017 Q3	1/19/2021	210	0.0%	779	9/30/2017
2017 Q2	1/19/2021	134	0.0%	506	6/30/2017