Filed: 2/9/2024ACC: 0001085146-24-001000
📋 What this filing means
WESTFIELD CAPITAL MANAGEMENT CO LP filed this quarterly 13F‑HR report disclosing 239 equity positions with a total reported market value of $17.16B. This filing provides a transparent view of the manager's long equity holdings as of the quarter end.
239
Positions
$17.16B
Total AUM (reported)
185.84M
Total Shares
Allocation by class
COM$12.25B71.4%
CL A$1.20B7.0%
COM CL A$813.14M4.7%
SPONSORED ADR$648.23M3.8%
SHS$526.54M3.1%
COM NEW$458.83M2.7%
CAP STK CL A$453.76M2.6%
Portfolio Concentration
Top 3$1.57B9.2%
4–10$2.20B12.8%
11–25$2.53B14.7%
Rest$10.85B63.3%
Top 3 weight
9.2%
Top 10 weight
22.0%
Voting Authority Distribution
Total shares with voting rights: 185.84M
Sole
Full voting authority
149.71M
shares
% of voting shares80.6%
Shared
Joint voting authority
0.00
shares
% of voting shares0.0%
None
No voting authority
36.13M
shares
% of voting shares19.4%
Investment Discretion (by position count)
Sole239
Shared0
Other0
Dominant voting typeSole · 80.6% of voting shares
Institutional Holdings239
Rows:
MICROSOFT CORP
SOLEShares1.56M
TypeSH
Market value$585.83M
3.41%
Sole
1.34M
Shared
0.00
None
215.40K
ASCENDIS PHARMA A/S
SOLEShares4.03M
TypeSH
Market value$507.66M
2.96%
Sole
3.40M
Shared
0.00
None
634.47K
APPLE INC
SOLEShares2.49M
TypeSH
Market value$479.95M
2.80%
Sole
2.17M
Shared
0.00
None
323.84K
ALPHABET INC
SOLEShares3.25M
TypeSH
Market value$453.76M
2.64%
Sole
2.88M
Shared
0.00
None
363.44K
AMAZON COM INC
SOLEShares2.33M
TypeSH
Market value$354.76M
2.07%
Sole
2.06M
Shared
0.00
None
272.23K
TRANSDIGM GROUP INC
SOLEShares320.18K
TypeSH
Market value$323.89M
1.89%
Sole
264.98K
Shared
0.00
None
55.19K
NVIDIA CORPORATION
SOLEShares595.83K
TypeSH
Market value$295.07M
1.72%
Sole
526.15K
Shared
0.00
None
69.69K
VISA INC
SOLEShares1.09M
TypeSH
Market value$282.82M
1.65%
Sole
945.19K
Shared
0.00
None
141.13K
META PLATFORMS INC
SOLEShares724.43K
TypeSH
Market value$256.42M
1.49%
Sole
642.35K
Shared
0.00
None
82.08K
BUILDERS FIRSTSOURCE INC
SOLEShares1.42M
TypeSH
Market value$236.49M
1.38%
Sole
1.12M
Shared
0.00
None
295.06K
DEXCOM INC
SOLEShares1.86M
TypeSH
Market value$230.47M
1.34%
Sole
1.51M
Shared
0.00
None
349.41K
UNITEDHEALTH GROUP INC
SOLEShares435.08K
TypeSH
Market value$229.06M
1.34%
Sole
378.30K
Shared
0.00
None
56.78K
SERVICENOW INC
SOLEShares296.25K
TypeSH
Market value$209.30M
1.22%
Sole
260.23K
Shared
0.00
None
36.02K
AXON ENTERPRISE INC
SOLEShares731.72K
TypeSH
Market value$189.03M
1.10%
Sole
574.59K
Shared
0.00
None
157.13K
SAIA INC
SOLEShares376.41K
TypeSH
Market value$164.95M
0.96%
Sole
306.64K
Shared
0.00
None
69.77K
M/I HOMES INC
SOLEShares1.18M
TypeSH
Market value$163.14M
0.95%
Sole
942.39K
Shared
0.00
None
242.04K
AMETEK INC
SOLEShares979.84K
TypeSH
Market value$161.57M
0.94%
Sole
800.32K
Shared
0.00
None
179.52K
SALESFORCE INC
SOLEShares608.12K
TypeSH
Market value$160.02M
0.93%
Sole
529.36K
Shared
0.00
None
78.76K
ICON PLC
SOLEShares558.85K
TypeSH
Market value$158.19M
0.92%
Sole
459.38K
Shared
0.00
None
99.46K
INSULET CORP
SOLEShares705.43K
TypeSH
Market value$153.06M
0.89%
Sole
539.57K
Shared
0.00
None
165.85K
OPTION CARE HEALTH INC
SOLEShares4.48M
TypeSH
Market value$151.02M
0.88%
Sole
3.55M
Shared
0.00
None
933.96K
LINCOLN ELEC HLDGS INC
SOLEShares687.84K
TypeSH
Market value$149.58M
0.87%
Sole
543.91K
Shared
0.00
None
143.94K
MARVELL TECHNOLOGY INC
SOLEShares2.42M
TypeSH
Market value$145.93M
0.85%
Sole
2.03M
Shared
0.00
None
389.44K
HOME DEPOT INC
SOLEShares381.84K
TypeSH
Market value$132.33M
0.77%
Sole
332.77K
Shared
0.00
None
49.07K
ABBVIE INC
SOLEShares839.74K
TypeSH
Market value$130.13M
0.76%
Sole
710.28K
Shared
0.00
None
129.46K
| Issuer | Class | Shares | Type | Value / Portfolio % | Voting — Sole | Shared | None |
|---|---|---|---|---|---|---|---|
MICROSOFT CORPSOLE | COM | 1.56M | SH | $585.83M 3.41% | 1.34M | 0.00 | 215.40K |
ASCENDIS PHARMA A/SSOLE | SPONSORED ADR | 4.03M | SH | $507.66M 2.96% | 3.40M | 0.00 | 634.47K |
APPLE INCSOLE | COM | 2.49M | SH | $479.95M 2.80% | 2.17M | 0.00 | 323.84K |
ALPHABET INCSOLE | CAP STK CL A | 3.25M | SH | $453.76M 2.64% | 2.88M | 0.00 | 363.44K |
AMAZON COM INCSOLE | COM | 2.33M | SH | $354.76M 2.07% | 2.06M | 0.00 | 272.23K |
TRANSDIGM GROUP INCSOLE | COM | 320.18K | SH | $323.89M 1.89% | 264.98K | 0.00 | 55.19K |
NVIDIA CORPORATIONSOLE | COM | 595.83K | SH | $295.07M 1.72% | 526.15K | 0.00 | 69.69K |
VISA INCSOLE | COM CL A | 1.09M | SH | $282.82M 1.65% | 945.19K | 0.00 | 141.13K |
META PLATFORMS INCSOLE | CL A | 724.43K | SH | $256.42M 1.49% | 642.35K | 0.00 | 82.08K |
BUILDERS FIRSTSOURCE INCSOLE | COM | 1.42M | SH | $236.49M 1.38% | 1.12M | 0.00 | 295.06K |
DEXCOM INCSOLE | COM | 1.86M | SH | $230.47M 1.34% | 1.51M | 0.00 | 349.41K |
UNITEDHEALTH GROUP INCSOLE | COM | 435.08K | SH | $229.06M 1.34% | 378.30K | 0.00 | 56.78K |
SERVICENOW INCSOLE | COM | 296.25K | SH | $209.30M 1.22% | 260.23K | 0.00 | 36.02K |
AXON ENTERPRISE INCSOLE | COM | 731.72K | SH | $189.03M 1.10% | 574.59K | 0.00 | 157.13K |
SAIA INCSOLE | COM | 376.41K | SH | $164.95M 0.96% | 306.64K | 0.00 | 69.77K |
M/I HOMES INCSOLE | COM | 1.18M | SH | $163.14M 0.95% | 942.39K | 0.00 | 242.04K |
AMETEK INCSOLE | COM | 979.84K | SH | $161.57M 0.94% | 800.32K | 0.00 | 179.52K |
SALESFORCE INCSOLE | COM | 608.12K | SH | $160.02M 0.93% | 529.36K | 0.00 | 78.76K |
ICON PLCSOLE | SHS | 558.85K | SH | $158.19M 0.92% | 459.38K | 0.00 | 99.46K |
INSULET CORPSOLE | COM | 705.43K | SH | $153.06M 0.89% | 539.57K | 0.00 | 165.85K |
OPTION CARE HEALTH INCSOLE | COM NEW | 4.48M | SH | $151.02M 0.88% | 3.55M | 0.00 | 933.96K |
LINCOLN ELEC HLDGS INCSOLE | COM | 687.84K | SH | $149.58M 0.87% | 543.91K | 0.00 | 143.94K |
MARVELL TECHNOLOGY INCSOLE | COM | 2.42M | SH | $145.93M 0.85% | 2.03M | 0.00 | 389.44K |
HOME DEPOT INCSOLE | COM | 381.84K | SH | $132.33M 0.77% | 332.77K | 0.00 | 49.07K |
ABBVIE INCSOLE | COM | 839.74K | SH | $130.13M 0.76% | 710.28K | 0.00 | 129.46K |
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