Westfield Capital Management
CSGP icon

Westfield Capital Management’s CoStar Group CSGP Stock Holding History

Westfield Capital Management’s Portfolio CSGP Stock Details CSGP Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2025
Q3 		– Sell
-74,545
Closed -$5.99M – 248
2025
Q2 		$5.99M Sell
74,545
-536
-0.7% -$41.8K 0.03% 202
2025
Q1 		$5.95M Hold
75,081
– – 0.03% 204
2024
Q4 		$5.38M Sell
75,081
-1,290,427
-95% -$97.5M 0.02% 205
2024
Q3 		$103M Sell
1,365,508
-354,405
-21% -$26.9M 0.47% 65
2024
Q2 		$128M Buy
1,719,913
+72,524
+4% +$6.15M 0.63% 38
2024
Q1 		$159M Buy
1,647,389
+248,493
+18% +$21.4M 0.84% 24
2023
Q4 		$122M Buy
1,398,896
+731,375
+110% +$59.2M 0.71% 28
2023
Q3 		$51.3M Sell
667,521
-195,950
-23% -$16.2M 0.35% 113
2023
Q2 		$76.8M Sell
863,471
-18,306
-2% -$1.41M 0.49% 71
2023
Q1 		$60.7M Buy
881,777
+113,720
+15% +$8.39M 0.43% 92
2022
Q4 		$59.4M Buy
768,057
+19,934
+3% +$1.56M 0.46% 85
2022
Q3 		$52.1M Buy
748,123
+673,623
+904% +$46.8M 0.41% 96
2022
Q2 		$4.5M Hold
74,500
– – 0.04% 203
2022
Q1 		$4.96M Hold
74,500
– – 0.03% 204
2021
Q4 		$5.89M Hold
74,500
– – 0.04% 198
2021
Q3 		$6.41M Sell
74,500
-350
-0.5% -$30.3K 0.04% 195
2021
Q2 		$6.2M Sell
74,850
-715,920
-91% -$61.9M 0.04% 202
2021
Q1 		$65M Buy
790,770
+12,260
+2% +$1.06M 0.4% 87
2020
Q4 		$72M Sell
778,510
-34,080
-4% -$2.99M 0.43% 84
2020
Q3 		$68.9M Sell
812,590
-225,280
-22% -$18M 0.45% 73
2020
Q2 		$73.8M Sell
1,037,870
-11,470
-1% -$742K 0.51% 66
2020
Q1 		$61.6M Buy
1,049,340
+548,380
+109% +$35.7M 0.54% 61
2019
Q4 		$30M Sell
500,960
-76,560
-13% -$4.47M 0.21% 136
2019
Q3 		$34.3M Sell
577,520
-237,420
-29% -$14.2M 0.27% 116
2019
Q2 		$45.2M Sell
814,940
-49,650
-6% -$2.54M 0.34% 104
2019
Q1 		$40.3M Sell
864,590
-11,850
-1% -$490K 0.31% 104
2018
Q4 		$29.6M Buy
876,440
+7,570
+0.9% +$277K 0.25% 124
2018
Q3 		$36.6M Sell
868,870
-707,300
-45% -$30.2M 0.26% 127
2018
Q2 		$65M Sell
1,576,170
-1,051,270
-40% -$40.5M 0.49% 66
2018
Q1 		$95.3M Sell
2,627,440
-258,590
-9% -$8.91M 0.73% 41
2017
Q4 		$85.7M Sell
2,886,030
-76,690
-3% -$2.25M 0.65% 47
2017
Q3 		$79.5M Sell
2,962,720
-68,840
-2% -$1.91M 0.61% 56
2017
Q2 		$79.9M Sell
3,031,560
-61,020
-2% -$1.48M 0.68% 46
2017
Q1 		$64.1M Sell
3,092,580
-137,780
-4% -$2.8M 0.55% 59
2016
Q4 		$60.9M Sell
3,230,360
-667,960
-17% -$13.1M 0.53% 68
2016
Q3 		$84.4M Sell
3,898,320
-362,890
-9% -$7.73M 0.68% 47
2016
Q2 		$93.2M Sell
4,261,210
-132,990
-3% -$2.63M 0.77% 40
2016
Q1 		$82.7M Sell
4,394,200
-334,270
-7% -$5.92M 0.63% 50
2015
Q4 		$97.7M Sell
4,728,470
-24,740
-0.5% -$492K 0.66% 52
2015
Q3 		$82.3M Buy
4,753,210
+731,100
+18% +$14M 0.58% 55
2015
Q2 		$80.9M Sell
4,022,110
-316,630
-7% -$6.46M 0.49% 69
2015
Q1 		$85.8M Buy
4,338,740
+1,589,020
+58% +$30M 0.49% 65
2014
Q4 		$50.5M Buy
2,749,720
+1,533,050
+126% +$24.8M 0.3% 112
2014
Q3 		$18.9M Sell
1,216,670
-30,600
-2% -$456K 0.12% 200
2014
Q2 		$19.7M Sell
1,247,270
-491,750
-28% -$7.97M 0.12% 200
2014
Q1 		$32.5M Sell
1,739,020
-28,900
-2% -$545K 0.19% 160
2013
Q4 		$32.6M Sell
1,767,920
-377,250
-18% -$6.67M 0.19% 159
2013
Q3 		$36M Sell
2,145,170
-814,500
-28% -$12.5M 0.23% 145
2013
Q2 		$38.2M Buy
+2,959,670
New +$33.5M 0.26% 126

Other funds holding CSGP

Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
BAMCO Inc
BAMCO Inc New York $33.1B AUM 11.16% 1-Year Est. Return
Principal Financial Group
Principal Financial Group Des Moines, Iowa $187B AUM 18.48% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
ACM
AKRE Capital Management Middleburg, Virginia $6.13B AUM 15.27% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return
Baillie Gifford & Co
Baillie Gifford & Co Edinburgh, United Kingdom $97.9B AUM 20.73% 1-Year Est. Return
Massachusetts Financial Services
Massachusetts Financial Services Boston, Massachusetts $298B AUM 21.96% 1-Year Est. Return

Westfield Capital Management's CSGP Position: Q3 2025 in Review

Westfield Capital Management sold out of CoStar Group (CSGP) in Q3 2025, closing a stake of 74,545 shares — an estimated $5.99M sold.

Westfield Capital Management first reported a position in CSGP in Q2 2013 and held it in 49 quarters. The position peaked at $159M in Q1 2024. 903 funds tracked by Wall St. Rank hold CSGP as of Q3 2025.

  • Westfield Capital Management reported no remaining CoStar Group position as of Q3 2025 after selling out during the quarter.
  • Westfield Capital Management sold 74,545 CoStar Group shares in Q3 2025, an estimated $5.99M.
  • Westfield Capital Management first reported a position in CoStar Group in Q2 2013 and held it in 49 quarters.
  • Westfield Capital Management's CoStar Group position peaked at $159M in Q1 2024.
  • 903 funds tracked by Wall St. Rank held CoStar Group as of Q3 2025.

Based on Westfield Capital Management's 13F filing for Q3 2025, filed 12 Nov 2025.