William Blair & Company’s CoStar Group CSGP Stock Holding History
| Quarter | Market Value | Status | Shares |
Shares Change % | Trade Value | Portfolio Weight | Portfolio Position | |
|---|---|---|---|---|---|---|---|---|
|
2025
Q2 | $231M | Sell |
2,871,162
-32,356
| -1% | -$2.6M | 0.64% | 40 |
|
|
2025
Q1 | $230M | Sell |
2,903,518
-490,433
| -14% | -$38.9M | 0.69% | 35 |
|
|
2024
Q4 | $243M | Sell |
3,393,951
-456,885
| -12% | -$32.7M | 0.71% | 30 |
|
|
2024
Q3 | $291M | Sell |
3,850,836
-546,902
| -12% | -$41.3M | 0.85% | 24 |
|
|
2024
Q2 | $326M | Sell |
4,397,738
-22,040
| -0.5% | -$1.63M | 1.01% | 18 |
|
|
2024
Q1 | $427M | Buy |
4,419,778
+26,800
| +0.6% | +$2.59M | 1.34% | 11 |
|
|
2023
Q4 | $384M | Buy |
4,392,978
+201,969
| +5% | +$17.7M | 1.31% | 13 |
|
|
2023
Q3 | $322M | Buy |
4,191,009
+251,182
| +6% | +$19.3M | 1.24% | 14 |
|
|
2023
Q2 | $351M | Buy |
3,939,827
+184,794
| +5% | +$16.4M | 1.28% | 12 |
|
|
2023
Q1 | $259M | Buy |
3,755,033
+44,732
| +1% | +$3.08M | 1.03% | 16 |
|
|
2022
Q4 | $287M | Buy |
3,710,301
+256,608
| +7% | +$19.8M | 1.25% | 11 |
|
|
2022
Q3 | $241M | Buy |
3,453,693
+244,909
| +8% | +$17.1M | 1.1% | 14 |
|
|
2022
Q2 | $194M | Buy |
3,208,784
+453,649
| +16% | +$27.4M | 0.86% | 20 |
|
|
2022
Q1 | $184M | Sell |
2,755,135
-40,211
| -1% | -$2.68M | 0.64% | 36 |
|
|
2021
Q4 | $221M | Buy |
2,795,346
+71,440
| +3% | +$5.65M | 0.69% | 33 |
|
|
2021
Q3 | $234M | Buy |
2,723,906
+48,540
| +2% | +$4.18M | 0.8% | 23 |
|
|
2021
Q2 | $222M | Buy |
2,675,366
+2,412,720
| +919% | +$200M | 0.77% | 23 |
|
|
2021
Q1 | $216M | Buy |
262,646
+4,054
| +2% | +$3.33M | 0.81% | 23 |
|
|
2020
Q4 | $239M | Buy |
258,592
+1,224
| +0.5% | +$1.13M | 0.88% | 21 |
|
|
2020
Q3 | $218M | Buy |
257,368
+1,839
| +0.7% | +$1.56M | 0.93% | 21 |
|
|
2020
Q2 | $182M | Buy |
255,529
+4,572
| +2% | +$3.25M | 0.87% | 21 |
|
|
2020
Q1 | $147M | Sell |
250,957
-4,872
| -2% | -$2.86M | 0.92% | 19 |
|
|
2019
Q4 | $153M | Buy |
255,829
+3,759
| +1% | +$2.25M | 0.79% | 25 |
|
|
2019
Q3 | $150M | Sell |
252,070
-5,051
| -2% | -$3M | 0.86% | 21 |
|
|
2019
Q2 | $142M | Sell |
257,121
-1,932
| -0.7% | -$1.07M | 0.81% | 24 |
|
|
2019
Q1 | $121M | Buy |
259,053
+9,971
| +4% | +$4.65M | 0.74% | 26 |
|
|
2018
Q4 | $84M | Sell |
249,082
-4,215
| -2% | -$1.42M | 0.61% | 36 |
|
|
2018
Q3 | $107M | Sell |
253,297
-2,931
| -1% | -$1.23M | 0.65% | 35 |
|
|
2018
Q2 | $106M | Sell |
256,228
-16,278
| -6% | -$6.72M | 0.72% | 30 |
|
|
2018
Q1 | $98.8M | Sell |
272,506
-70,270
| -21% | -$25.5M | 0.7% | 33 |
|
|
2017
Q4 | $102M | Sell |
342,776
-8,348
| -2% | -$2.48M | 0.69% | 32 |
|
|
2017
Q3 | $94.2M | Sell |
351,124
-4,450
| -1% | -$1.19M | 0.71% | 30 |
|
|
2017
Q2 | $93.7M | Sell |
355,574
-10,757
| -3% | -$2.84M | 0.7% | 29 |
|
|
2017
Q1 | $75.2M | Buy |
366,331
+14,492
| +4% | +$2.98M | 0.61% | 39 |
|
|
2016
Q4 | $66.3M | Sell |
351,839
-321
| -0.1% | -$60.5K | 0.59% | 42 |
|
|
2016
Q3 | $76.3M | Buy |
352,160
+23,063
| +7% | +$4.99M | 0.67% | 32 |
|
|
2016
Q2 | $72M | Sell |
329,097
-10,280
| -3% | -$2.25M | 0.67% | 37 |
|
|
2016
Q1 | $63.9M | Buy |
339,377
+8,365
| +3% | +$1.57M | 0.6% | 45 |
|
|
2015
Q4 | $68.4M | Sell |
331,012
-52,166
| -14% | -$10.8M | 0.64% | 37 |
|
|
2015
Q3 | $66.3M | Sell |
383,178
-1,025,777
| -73% | -$178M | 0.57% | 38 |
|
|
2015
Q2 | $284M | Buy |
1,408,955
+6,297
| +0.4% | +$1.27M | 0.42% | 36 |
|
|
2015
Q1 | $277M | Sell |
1,402,658
-55,658
| -4% | -$11M | 0.43% | 37 |
|
|
2014
Q4 | $268M | Buy |
1,458,316
+188,046
| +15% | +$34.5M | 0.43% | 33 |
|
|
2014
Q3 | $198M | Sell |
1,270,270
-10,204
| -0.8% | -$1.59M | 0.34% | 68 |
|
|
2014
Q2 | $203M | Buy |
1,280,474
+319,872
| +33% | +$50.6M | 0.33% | 68 |
|
|
2014
Q1 | $179M | Buy |
960,602
+7,945
| +0.8% | +$1.48M | 0.3% | 89 |
|
|
2013
Q4 | $176M | Sell |
952,657
-109,766
| -10% | -$20.3M | 0.29% | 90 |
|
|
2013
Q3 | $178M | Sell |
1,062,423
-6,034
| -0.6% | -$1.01M | 0.32% | 71 |
|
|
2013
Q2 | $138M | Buy |
+1,068,457
| New | +$138M | 0.27% | 91 |
|