How many shares of CSGP does BAMCO INC /NY/ own?

As of 2026-Q2, BAMCO INC /NY/ holds 21.6M shares of CSGP (COSTAR GROUP INC).

What is BAMCO INC /NY/'s CSGP position worth?

As of 2026-Q2, BAMCO INC /NY/'s CSGP position is worth $612.5M.

In 2026-Q2, BAMCO INC /NY/ increased their CSGP position (+32.6% change in shares).

Based on available 13F filings, BAMCO INC /NY/ first reported a position in CSGP in 2018-Q4. They have held the position across 31 quarters.

Position history for BAMCO INC /NY/'s holdings in COSTAR GROUP INC

Current Value

$612.5M

Current Shares

21.6M

Total Value Change

-$214.2M

Total Shares Change

+19.2M

Quarter-by-Quarter History

Quarter	Action	Shares	Change	Value	Weight	Price	Conviction
2026-Q2 Latest	Increased	21.6M	+32.6%	$612.5M	0.9%	$28.32	57
2026-Q1	Decreased	16.3M	-16.3%	$658.1M	2.0%	$40.34	0
2025-Q4	Increased	19.5M	+1.3%	$1.3B	3.6%	$67.24	59
2025-Q3	Decreased	19.3M	-2.2%	$1.6B	4.3%	$84.37	0
2025-Q2	Increased	19.7M	+3.4%	$1.6B	4.3%	$80.40	61
2025-Q1	Decreased	19M	-0.9%	$1.5B	4.4%	$79.23	0
2024-Q4	Increased	19.2M	+2.2%	$1.4B	3.6%	$71.59	60
2024-Q3	Decreased	18.8M	-2.5%	$1.4B	3.8%	$75.44	0
2024-Q2	Decreased	19.3M	-0.3%	$1.4B	4.1%	$74.14	0
2024-Q1	Decreased	19.3M	-0.3%	$1.9B	5.0%	$96.60	0
2023-Q4	Increased	19.4M	+1.0%	$1.7B	4.5%	$87.39	59
2023-Q3	Increased	19.2M	+0.5%	$1.5B	4.3%	$76.89	59
2023-Q2	Increased	19.1M	+0.7%	$1.7B	4.7%	$89.00	59
2023-Q1	Decreased	19M	-0.7%	$1.3B	3.9%	$68.85	0
2022-Q4	Decreased	19.1M	-0.8%	$1.5B	5.0%	$77.28	0
2022-Q3	Increased	19.3M	+0.1%	$1.3B	4.3%	$69.65	58
2022-Q2	Increased	19.2M	+2.1%	$1.2B	3.7%	$60.41	60
2022-Q1	Increased	18.8M	+1.9%	$1.3B	3.1%	$66.61	60
2021-Q4	Decreased	18.5M	-0.8%	$1.5B	3.1%	$79.03	0
2021-Q3	Decreased	18.6M	-0.8%	$1.6B	3.6%	$86.06	0
2021-Q2	Increased	18.8M	+868.6%	$1.6B	3.6%	$82.82	94
2021-Q1	Increased	1.9M	+0.3%	$1.6B	3.9%	$82.19	58
2020-Q4	Decreased	1.9M	-3.4%	$1.8B	4.4%	$92.43	0
2020-Q3	Decreased	2M	-4.7%	$1.7B	5.2%	$84.85	0
2020-Q2	Increased	2.1M	+0.1%	$1.5B	5.4%	$71.07	62
2020-Q1	Decreased	2.1M	-7.6%	$1.2B	6.0%	$58.72	0
2019-Q4	Decreased	2.3M	-5.2%	$1.4B	5.2%	$59.83	0
2019-Q3	Decreased	2.4M	-0.9%	$1.4B	5.8%	$59.32	0
2019-Q2	Decreased	2.4M	-1.3%	$1.3B	5.4%	$55.41	0
2019-Q1	Decreased	2.4M	-0.1%	$1.1B	4.8%	$46.64	0
2018-Q4	New	2.5M	-	$826.7M	4.2%	$33.73	88