CIK: 0001177719

Westfield Capital Management Co Lp

Filing Date Previous Period Total Shares Share-Type Market Value Change
2021-05-14
9.28M
11.33M
Shares
115.66M
2.05M
2021-05-14
8.49M
5.38M
Shares
60.19M
-3.10M
2023-08-11
3.24M
3.66M
Shares
72.64M
419.88K
2021-05-14
0
3.42M
Shares
24.96M
3.42M
2021-05-14
3.46M
3.07M
Shares
118.72M
-393.11K
2021-05-14
2.56M
2.98M
Shares
130.66M
422.52K
2023-05-12
3.33M
2.95M
Shares
486.50M
-382.42K
2023-08-11
2.40M
2.70M
Shares
129.09M
298.78K
2023-08-11
2.40M
2.70M
Shares
129.09M
298.78K
2021-05-14
814.80K
2.61M
Shares
28.62M
1.80M
2023-08-11
1.40M
2.60M
Shares
99.31M
1.19M
2021-05-14
2.65M
2.43M
Shares
92.19M
-218.98K
2020-11-13
1.73M
2.40M
Shares
44.00M
672.77K
2021-05-14
2.26M
2.18M
Shares
289.07M
-84.33K
2021-05-14
1.31M
2.08M
Shares
90.78M
766.28K
2021-05-14
697.39K
2.07M
Shares
115.68M
1.37M
2021-05-14
1.63M
2.03M
Shares
82.66M
406.90K
2021-05-14
462.38K
2.00M
Shares
32.34M
1.54M
2021-02-12
2.15M
1.96M
Shares
434.88M
-192.13K
2021-05-14
1.73M
1.87M
Shares
240.71M
137.81K
2021-02-12
2.05M
1.85M
Shares
114.46M
-200.78K
2021-02-12
1.78M
1.77M
Shares
147.82M
-10.19K
2021-05-14
1.64M
1.76M
Shares
46.70M
122.11K
2021-05-14
0
1.73M
Shares
71.37M
1.73M
2021-05-14
1.90M
1.71M
Shares
176.30M
-199.70K
2021-05-14
1.55M
1.67M
Shares
129.44M
121.21K
2021-02-12
664.28K
1.65M
Shares
63.34M
983.02K
2021-02-12
1.50M
1.59M
Shares
87.47M
96.49K
2021-05-14
826.96K
1.50M
Shares
295.01M
675.38K
2021-05-14
0
1.48M
Shares
64.37M
1.48M
2021-05-14
1.51M
1.41M
Shares
10.73M
-102.37K
2021-05-14
0
1.40M
Shares
46.52M
1.40M
2021-02-12
0
1.39M
Shares
148.79M
1.39M
2021-05-14
1.50M
1.38M
Shares
176.56M
-112.92K
2021-05-14
0
1.35M
Shares
22.89M
1.35M
2021-05-14
1.40M
1.33M
Shares
189.49M
-65.30K
2020-11-13
1.08M
1.25M
Shares
34.23M
165.11K
2021-05-14
1.22M
1.22M
Shares
105.76M
-2.12K
2021-05-14
1.14M
1.19M
Shares
35.00M
50.22K
2021-05-14
2.41M
1.17M
Shares
23.15M
-1.23M
2021-05-14
868.07K
1.13M
Shares
109.72M
260.42K
2021-05-14
0
1.12M
Shares
80.84M
1.12M
2021-05-14
1.17M
1.11M
Shares
64.56M
-59.17K
2021-05-14
1.05M
1.08M
Shares
96.91M
26.06K
2021-05-14
1.10M
1.04M
Shares
305.75M
-59.99K
2021-05-14
0
1.04M
Shares
22.31M
1.04M
2021-05-14
1.22M
1.03M
Shares
171.09M
-182.20K
2021-05-14
1.28M
1.02M
Shares
34.85M
-255.46K
2021-02-12
1.42M
1.02M
Shares
144.57M
-395.34K
2021-05-14
1.23M
1.02M
Shares
135.28M
-215.56K
2021-05-14
0
1.00M
Shares
63.37M
1.00M
2021-05-14
0
988.03K
Shares
27.48M
988.03K
2021-05-14
414.66K
979.95K
Shares
146.81M
565.29K
2023-08-11
0
972.05K
Shares
67.10M
972.05K
2021-02-12
644.03K
947.12K
Shares
45.60M
303.09K
2021-02-12
883.03K
918.55K
Shares
86.93M
35.52K
2021-05-14
1.07M
903.44K
Shares
40.59M
-162.88K
2021-02-12
1.19M
895.56K
Shares
136.43M
-290.32K
2021-05-14
1.06M
892.41K
Shares
164.58M
-171.09K
2021-05-14
687.09K
868.44K
Shares
23.66M
181.34K
2021-02-12
1.09M
864.75K
Shares
189.15M
-229.07K
2021-05-14
1.16M
847.91K
Shares
120.54M
-315.05K
2021-05-14
865.51K
839.27K
Shares
113.81M
-26.23K
2021-02-12
0
838.05K
Shares
10.38M
838.05K
2021-05-14
976.32K
826.58K
Shares
175.13M
-149.74K
2021-02-12
1.01M
806.60K
Shares
188.91M
-200.38K
2021-05-14
1.75M
793.58K
Shares
106.02M
-960.23K
2021-02-12
787.60K
756.95K
Shares
42.53M
-30.66K
2021-05-14
851.87K
744.78K
Shares
56.24M
-107.09K
2021-02-12
986.23K
741.24K
Shares
53.93M
-244.99K
2021-05-14
991.87K
734.23K
Shares
59.60M
-257.64K
2023-08-11
847.73K
730.50K
Shares
96.70M
-117.23K
2021-05-14
0
724.62K
Shares
39.33M
724.62K
2021-05-14
591.34K
722.38K
Shares
159.22M
131.04K
2021-05-14
895.29K
719.43K
Shares
145.02M
-175.86K
2020-11-13
570.19K
712.51K
Shares
32.60M
142.32K
2021-05-14
0
707.93K
Shares
80.78M
707.93K
2021-05-14
575.85K
684.22K
Shares
169.98M
108.37K
2021-02-12
709.94K
682.66K
Shares
38.80M
-27.29K
2021-05-14
704.80K
670.92K
Shares
60.99M
-33.88K
2021-05-14
681.29K
659.52K
Shares
81.08M
-21.77K
2021-05-14
759.79K
659.44K
Shares
51.52M
-100.35K
2021-02-12
631.95K
657.88K
Shares
62.37M
25.93K
2021-02-12
662.86K
653.09K
Shares
57.70M
-9.77K
2021-02-12
662.08K
652.94K
Shares
46.91M
-9.13K
2021-05-14
806.19K
650.06K
Shares
59.83M
-156.12K
2021-05-14
594.31K
645.88K
Shares
68.02M
51.56K
2021-05-14
639.28K
640.59K
Shares
76.81M
1.30K
2021-05-14
0
638.15K
Shares
12.80M
638.15K
2021-05-14
773.53K
618.48K
Shares
36.19M
-155.05K
2021-02-12
680.19K
617.57K
Shares
117.05M
-62.63K
2021-05-14
928.93K
612.38K
Shares
27.71M
-316.55K
2023-08-11
738.46K
610.56K
Shares
42.34M
-127.90K
2020-11-13
456.00K
601.05K
Shares
84.51M
145.05K
2021-05-14
425.89K
579.28K
Shares
151.15M
153.38K
2021-05-14
831.10K
577.24K
Shares
72.02M
-253.86K
2021-05-14
733.17K
569.53K
Shares
119.28M
-163.64K
2021-05-14
0
569.02K
Shares
26.90M
569.02K
2021-02-12
790.34K
568.34K
Shares
39.17M
-222.00K
2021-05-14
403.98K
550.12K
Shares
60.85M
146.13K

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