BAMCO Inc’s CoStar Group CSGP Stock Holding History
Bought
Maintained
Sold
| Quarter | Market Value | Status | Shares |
Change in Stake | Trade Value | Portfolio Weight | Portfolio Position | |
|---|---|---|---|---|---|---|---|---|
|
2026
Q1 | $658M | Sell |
16,314,175
-3,183,924
| -16% | -$166M | 1.99% | 14 |
|
|
2025
Q4 | $1.31B | Buy |
19,498,099
+242,533
| +1% | +$17.2M | 3.55% | 4 |
|
|
2025
Q3 | $1.62B | Sell |
19,255,566
-424,369
| -2% | -$37.5M | 4.31% | 3 |
|
|
2025
Q2 | $1.58B | Buy |
19,679,935
+647,413
| +3% | +$50.4M | 4.29% | 3 |
|
|
2025
Q1 | $1.51B | Sell |
19,032,522
-171,042
| -0.9% | -$13M | 4.43% | 4 |
|
|
2024
Q4 | $1.37B | Buy |
19,203,564
+418,128
| +2% | +$31.6M | 3.55% | 4 |
|
|
2024
Q3 | $1.42B | Sell |
18,785,436
-485,562
| -3% | -$36.8M | 3.76% | 4 |
|
|
2024
Q2 | $1.43B | Sell |
19,270,998
-66,620
| -0.3% | -$5.65M | 4.09% | 4 |
|
|
2024
Q1 | $1.87B | Sell |
19,337,618
-53,665
| -0.3% | -$4.62M | 4.98% | 4 |
|
|
2023
Q4 | $1.69B | Buy |
19,391,283
+194,781
| +1% | +$15.8M | 4.51% | 3 |
|
|
2023
Q3 | $1.48B | Buy |
19,196,502
+91,399
| +0.5% | +$7.57M | 4.29% | 4 |
|
|
2023
Q2 | $1.7B | Buy |
19,105,103
+135,022
| +0.7% | +$10.4M | 4.71% | 2 |
|
|
2023
Q1 | $1.31B | Sell |
18,970,081
-140,122
| -0.7% | -$10.3M | 3.92% | 4 |
|
|
2022
Q4 | $1.48B | Sell |
19,110,203
-144,677
| -0.8% | -$11.3M | 4.96% | 3 |
|
|
2022
Q3 | $1.34B | Buy |
19,254,880
+17,360
| +0.1% | +$1.21M | 4.33% | 3 |
|
|
2022
Q2 | $1.16B | Buy |
19,237,520
+388,347
| +2% | +$23.5M | 3.73% | 3 |
|
|
2022
Q1 | $1.26B | Buy |
18,849,173
+350,382
| +2% | +$23.3M | 3.08% | 4 |
|
|
2021
Q4 | $1.46B | Sell |
18,498,791
-140,948
| -0.8% | -$11.8M | 3.1% | 4 |
|
|
2021
Q3 | $1.6B | Sell |
18,639,739
-153,521
| -0.8% | -$13.3M | 3.63% | 4 |
|
|
2021
Q2 | $1.56B | Sell |
18,793,260
-609,330
| -3% | -$52.7M | 3.56% | 3 |
|
|
2021
Q1 | $1.59B | Buy |
19,402,590
+56,760
| +0.3% | +$4.9M | 3.93% | 2 |
|
|
2020
Q4 | $1.79B | Sell |
19,345,830
-683,880
| -3% | -$60M | 4.42% | 2 |
|
|
2020
Q3 | $1.7B | Sell |
20,029,710
-979,780
| -5% | -$78.1M | 5.22% | 2 |
|
|
2020
Q2 | $1.49B | Buy |
21,009,490
+9,500
| +0% | +$614K | 5.4% | 2 |
|
|
2020
Q1 | $1.23B | Sell |
20,999,990
-1,727,680
| -8% | -$113M | 6.04% | 1 |
|
|
2019
Q4 | $1.36B | Sell |
22,727,670
-1,235,770
| -5% | -$72.1M | 5.19% | 1 |
|
|
2019
Q3 | $1.42B | Sell |
23,963,440
-212,800
| -0.9% | -$12.7M | 5.85% | 1 |
|
|
2019
Q2 | $1.34B | Sell |
24,176,240
-309,130
| -1% | -$15.8M | 5.37% | 1 |
|
|
2019
Q1 | $1.14B | Sell |
24,485,370
-20,940
| -0.1% | -$865K | 4.84% | 1 |
|
|
2018
Q4 | $827M | Sell |
24,506,310
-194,240
| -0.8% | -$7.1M | 4.18% | 3 |
|
|
2018
Q3 | $1.04B | Sell |
24,700,550
-129,730
| -0.5% | -$5.54M | 4.31% | 3 |
|
|
2018
Q2 | $1.02B | Sell |
24,830,280
-470,130
| -2% | -$18.1M | 4.48% | 2 |
|
|
2018
Q1 | $918M | Sell |
25,300,410
-941,770
| -4% | -$32.5M | 4.22% | 2 |
|
|
2017
Q4 | $779M | Sell |
26,242,180
-2,613,010
| -9% | -$76.6M | 3.59% | 3 |
|
|
2017
Q3 | $774M | Sell |
28,855,190
-220,720
| -0.8% | -$6.13M | 3.67% | 4 |
|
|
2017
Q2 | $766M | Sell |
29,075,910
-917,950
| -3% | -$22.3M | 3.92% | 4 |
|
|
2017
Q1 | $622M | Buy |
29,993,860
+14,410
| +0% | +$293K | 3.29% | 5 |
|
|
2016
Q4 | $565M | Buy |
29,979,450
+1,090,610
| +4% | +$21.4M | 3.18% | 5 |
|
|
2016
Q3 | $626M | Sell |
28,888,840
-109,830
| -0.4% | -$2.34M | 3.32% | 5 |
|
|
2016
Q2 | $634M | Sell |
28,998,670
-275,520
| -0.9% | -$5.45M | 3.37% | 3 |
|
|
2016
Q1 | $551M | Buy |
29,274,190
+521,530
| +2% | +$9.23M | 2.91% | 4 |
|
|
2015
Q4 | $594M | Sell |
28,752,660
-194,770
| -0.7% | -$3.88M | 2.75% | 4 |
|
|
2015
Q3 | $501M | Sell |
28,947,430
-255,110
| -0.9% | -$4.89M | 2.26% | 7 |
|
|
2015
Q2 | $588M | Buy |
29,202,540
+20,260
| +0.1% | +$413K | 2.31% | 4 |
|
|
2015
Q1 | $577M | Buy |
29,182,280
+298,830
| +1% | +$5.64M | 2.23% | 3 |
|
|
2014
Q4 | $530M | Buy |
28,883,450
+557,800
| +2% | +$9.01M | 2.13% | 5 |
|
|
2014
Q3 | $441M | Buy |
28,325,650
+4,642,450
| +20% | +$69.2M | 1.83% | 6 |
|
|
2014
Q2 | $375M | Buy |
23,683,200
+1,597,330
| +7% | +$25.9M | 1.49% | 11 |
|
|
2014
Q1 | $412M | Buy |
22,085,870
+2,054,620
| +10% | +$38.8M | 1.68% | 6 |
|
|
2013
Q4 | $370M | Buy |
20,031,250
+279,640
| +1% | +$4.95M | 1.53% | 11 |
|
|
2013
Q3 | $332M | Buy |
19,751,610
+345,550
| +2% | +$5.3M | 1.52% | 12 |
|
|
2013
Q2 | $250M | Buy |
+19,406,060
| New | +$220M | 1.3% | 17 |
|
Other funds holding CSGP
VPM
VCM
BAMCO Inc's CSGP Position: Q1 2026 in Review
BAMCO Inc reduced its CoStar Group (CSGP) stake by 16% in Q1 2026, selling an estimated $166M and leaving 16,314,175 shares worth $658M. The position accounts for 1.99% of the portfolio, ranked #14.
BAMCO Inc first reported a position in CSGP in Q2 2013 and has held it in 52 quarters since. The position peaked at $1.87B in Q1 2024. 792 funds tracked by Wall St. Rank hold CSGP as of Q1 2026.
- BAMCO Inc held 16,314,175 shares of CoStar Group worth $658M as of Q1 2026.
- BAMCO Inc sold 3,183,924 CoStar Group shares in Q1 2026, an estimated $166M.
- CoStar Group made up 1.99% of BAMCO Inc's portfolio in Q1 2026, its #14 holding.
- BAMCO Inc first reported a position in CoStar Group in Q2 2013 and has held it in 52 quarters since.
- BAMCO Inc's CoStar Group position peaked at $1.87B in Q1 2024.
- 792 funds tracked by Wall St. Rank held CoStar Group as of Q1 2026.
Based on BAMCO Inc's 13F filing for Q1 2026, filed 15 May 2026.