Filed: 11/13/2023ACC: 0001085146-23-004307
📋 What this filing means
WESTFIELD CAPITAL MANAGEMENT CO LP filed this quarterly 13F‑HR report disclosing 234 equity positions with a total reported market value of $14.68B. This filing provides a transparent view of the manager's long equity holdings as of the quarter end.
234
Positions
$14.68B
Total AUM (reported)
173.20M
Total Shares
Allocation by class
COM$10.43B71.1%
CL A$984.43M6.7%
COM CL A$656.87M4.5%
COM NEW$526.81M3.6%
SPONSORED ADR$448.31M3.1%
CAP STK CL A$427.00M2.9%
SHS$410.08M2.8%
Portfolio Concentration
Top 3$1.30B8.9%
4–10$1.90B12.9%
11–25$2.20B15.0%
Rest$9.28B63.2%
Top 3 weight
8.9%
Top 10 weight
21.8%
Voting Authority Distribution
Total shares with voting rights: 173.20M
Sole
Full voting authority
149.75M
shares
% of voting shares86.5%
Shared
Joint voting authority
0.00
shares
% of voting shares0.0%
None
No voting authority
23.45M
shares
% of voting shares13.5%
Investment Discretion (by position count)
Sole234
Shared0
Other0
Dominant voting typeSole · 86.5% of voting shares
Institutional Holdings234
Rows:
APPLE INC
SOLEShares2.62M
TypeSH
Market value$448.71M
3.06%
Sole
2.28M
Shared
0.00
None
343.11K
ALPHABET INC
SOLEShares3.26M
TypeSH
Market value$427.00M
2.91%
Sole
2.89M
Shared
0.00
None
375.31K
MICROSOFT CORP
SOLEShares1.34M
TypeSH
Market value$423.91M
2.89%
Sole
1.15M
Shared
0.00
None
197.39K
ASCENDIS PHARMA A/S
SOLEShares3.80M
TypeSH
Market value$356.04M
2.43%
Sole
3.39M
Shared
0.00
None
410.18K
AMAZON COM INC
SOLEShares2.38M
TypeSH
Market value$302.57M
2.06%
Sole
2.10M
Shared
0.00
None
282.39K
NVIDIA CORPORATION
SOLEShares638.97K
TypeSH
Market value$277.95M
1.89%
Sole
563.28K
Shared
0.00
None
75.69K
TRANSDIGM GROUP INC
SOLEShares323.94K
TypeSH
Market value$273.12M
1.86%
Sole
268.22K
Shared
0.00
None
55.72K
VISA INC
SOLEShares1.10M
TypeSH
Market value$252.79M
1.72%
Sole
956.02K
Shared
0.00
None
143.04K
META PLATFORMS INC
SOLEShares734.69K
TypeSH
Market value$220.56M
1.50%
Sole
649.03K
Shared
0.00
None
85.66K
UNITEDHEALTH GROUP INC
SOLEShares430.80K
TypeSH
Market value$217.21M
1.48%
Sole
372.01K
Shared
0.00
None
58.79K
DEXCOM INC
SOLEShares1.85M
TypeSH
Market value$172.41M
1.17%
Sole
1.49M
Shared
0.00
None
356.66K
SERVICENOW INC
SOLEShares303.65K
TypeSH
Market value$169.73M
1.16%
Sole
266.29K
Shared
0.00
None
37.36K
BUILDERS FIRSTSOURCE INC
SOLEShares1.27M
TypeSH
Market value$158.55M
1.08%
Sole
1.09M
Shared
0.00
None
184.82K
SAIA INC
SOLEShares386.50K
TypeSH
Market value$154.08M
1.05%
Sole
349.83K
Shared
0.00
None
36.67K
AMETEK INC
SOLEShares1.04M
TypeSH
Market value$153.68M
1.05%
Sole
840.26K
Shared
0.00
None
199.77K
ELI LILLY & CO
SOLEShares286.01K
TypeSH
Market value$153.63M
1.05%
Sole
246K
Shared
0.00
None
40.02K
INSPIRE MED SYS INC
SOLEShares732.40K
TypeSH
Market value$145.34M
0.99%
Sole
668.24K
Shared
0.00
None
64.16K
LPL FINL HLDGS INC
SOLEShares599.10K
TypeSH
Market value$142.38M
0.97%
Sole
505.65K
Shared
0.00
None
93.46K
FORTINET INC
SOLEShares2.41M
TypeSH
Market value$141.56M
0.96%
Sole
2.01M
Shared
0.00
None
404.94K
AXON ENTERPRISE INC
SOLEShares696.19K
TypeSH
Market value$138.54M
0.94%
Sole
593.77K
Shared
0.00
None
102.42K
ICON PLC
SOLEShares556.02K
TypeSH
Market value$136.92M
0.93%
Sole
456.66K
Shared
0.00
None
99.35K
SPLUNK INC
SOLEShares929.98K
TypeSH
Market value$136.01M
0.93%
Sole
754.51K
Shared
0.00
None
175.47K
HUBBELL INC
SOLEShares424.89K
TypeSH
Market value$133.17M
0.91%
Sole
373.89K
Shared
0.00
None
51K
CHIPOTLE MEXICAN GRILL INC
SOLEShares72.68K
TypeSH
Market value$133.14M
0.91%
Sole
60.60K
Shared
0.00
None
12.08K
BIO RAD LABS INC
SOLEShares362.33K
TypeSH
Market value$129.88M
0.88%
Sole
324.10K
Shared
0.00
None
38.23K
| Issuer | Class | Shares | Type | Value / Portfolio % | Voting — Sole | Shared | None |
|---|---|---|---|---|---|---|---|
APPLE INCSOLE | COM | 2.62M | SH | $448.71M 3.06% | 2.28M | 0.00 | 343.11K |
ALPHABET INCSOLE | CAP STK CL A | 3.26M | SH | $427.00M 2.91% | 2.89M | 0.00 | 375.31K |
MICROSOFT CORPSOLE | COM | 1.34M | SH | $423.91M 2.89% | 1.15M | 0.00 | 197.39K |
ASCENDIS PHARMA A/SSOLE | SPONSORED ADR | 3.80M | SH | $356.04M 2.43% | 3.39M | 0.00 | 410.18K |
AMAZON COM INCSOLE | COM | 2.38M | SH | $302.57M 2.06% | 2.10M | 0.00 | 282.39K |
NVIDIA CORPORATIONSOLE | COM | 638.97K | SH | $277.95M 1.89% | 563.28K | 0.00 | 75.69K |
TRANSDIGM GROUP INCSOLE | COM | 323.94K | SH | $273.12M 1.86% | 268.22K | 0.00 | 55.72K |
VISA INCSOLE | COM CL A | 1.10M | SH | $252.79M 1.72% | 956.02K | 0.00 | 143.04K |
META PLATFORMS INCSOLE | CL A | 734.69K | SH | $220.56M 1.50% | 649.03K | 0.00 | 85.66K |
UNITEDHEALTH GROUP INCSOLE | COM | 430.80K | SH | $217.21M 1.48% | 372.01K | 0.00 | 58.79K |
DEXCOM INCSOLE | COM | 1.85M | SH | $172.41M 1.17% | 1.49M | 0.00 | 356.66K |
SERVICENOW INCSOLE | COM | 303.65K | SH | $169.73M 1.16% | 266.29K | 0.00 | 37.36K |
BUILDERS FIRSTSOURCE INCSOLE | COM | 1.27M | SH | $158.55M 1.08% | 1.09M | 0.00 | 184.82K |
SAIA INCSOLE | COM | 386.50K | SH | $154.08M 1.05% | 349.83K | 0.00 | 36.67K |
AMETEK INCSOLE | COM | 1.04M | SH | $153.68M 1.05% | 840.26K | 0.00 | 199.77K |
ELI LILLY & COSOLE | COM | 286.01K | SH | $153.63M 1.05% | 246K | 0.00 | 40.02K |
INSPIRE MED SYS INCSOLE | COM | 732.40K | SH | $145.34M 0.99% | 668.24K | 0.00 | 64.16K |
LPL FINL HLDGS INCSOLE | COM | 599.10K | SH | $142.38M 0.97% | 505.65K | 0.00 | 93.46K |
FORTINET INCSOLE | COM | 2.41M | SH | $141.56M 0.96% | 2.01M | 0.00 | 404.94K |
AXON ENTERPRISE INCSOLE | COM | 696.19K | SH | $138.54M 0.94% | 593.77K | 0.00 | 102.42K |
ICON PLCSOLE | SHS | 556.02K | SH | $136.92M 0.93% | 456.66K | 0.00 | 99.35K |
SPLUNK INCSOLE | COM | 929.98K | SH | $136.01M 0.93% | 754.51K | 0.00 | 175.47K |
HUBBELL INCSOLE | COM | 424.89K | SH | $133.17M 0.91% | 373.89K | 0.00 | 51K |
CHIPOTLE MEXICAN GRILL INCSOLE | COM | 72.68K | SH | $133.14M 0.91% | 60.60K | 0.00 | 12.08K |
BIO RAD LABS INCSOLE | CL A | 362.33K | SH | $129.88M 0.88% | 324.10K | 0.00 | 38.23K |
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