Filed: 5/10/2024ACC: 0001085146-24-002397
📋 What this filing means
WESTFIELD CAPITAL MANAGEMENT CO LP filed this quarterly 13F‑HR report disclosing 244 equity positions with a total reported market value of $19.05B. This filing provides a transparent view of the manager's long equity holdings as of the quarter end.
244
Positions
$19.05B
Total AUM (reported)
194.48M
Total Shares
Allocation by class
COM$13.25B69.6%
CL A$1.28B6.7%
COM CL A$1.05B5.5%
SPONSORED ADR$793.78M4.2%
SHS$519.25M2.7%
COM NEW$461.34M2.4%
CAP STK CL A$446.24M2.3%
Portfolio Concentration
Top 3$1.81B9.5%
4–10$2.77B14.5%
11–25$2.86B15.0%
Rest$11.61B61.0%
Top 3 weight
9.5%
Top 10 weight
24.0%
Voting Authority Distribution
Total shares with voting rights: 194.48M
Sole
Full voting authority
148.65M
shares
% of voting shares76.4%
Shared
Joint voting authority
0.00
shares
% of voting shares0.0%
None
No voting authority
45.83M
shares
% of voting shares23.6%
Investment Discretion (by position count)
Sole244
Shared0
Other0
Dominant voting typeSole · 76.4% of voting shares
Institutional Holdings244
Rows:
MICROSOFT CORP
SOLEShares1.52M
TypeSH
Market value$640.73M
3.36%
Sole
1.30M
Shared
0.00
None
226.12K
ASCENDIS PHARMA A/S
SOLEShares4.08M
TypeSH
Market value$616.05M
3.23%
Sole
3.26M
Shared
0.00
None
813.23K
APPLE INC
SOLEShares3.24M
TypeSH
Market value$555.12M
2.91%
Sole
2.80M
Shared
0.00
None
442.13K
NVIDIA CORPORATION
SOLEShares599.97K
TypeSH
Market value$542.11M
2.85%
Sole
523.04K
Shared
0.00
None
76.93K
AMAZON COM INC
SOLEShares2.63M
TypeSH
Market value$475.02M
2.49%
Sole
2.29M
Shared
0.00
None
339.35K
ALPHABET INC
SOLEShares2.96M
TypeSH
Market value$446.24M
2.34%
Sole
2.59M
Shared
0.00
None
367.94K
TRANSDIGM GROUP INC
SOLEShares315.37K
TypeSH
Market value$388.42M
2.04%
Sole
253.67K
Shared
0.00
None
61.70K
META PLATFORMS INC
SOLEShares702.58K
TypeSH
Market value$341.16M
1.79%
Sole
618.26K
Shared
0.00
None
84.33K
BUILDERS FIRSTSOURCE INC
SOLEShares1.38M
TypeSH
Market value$288.07M
1.51%
Sole
963.96K
Shared
0.00
None
417.32K
VISA INC
SOLEShares1.02M
TypeSH
Market value$284.66M
1.49%
Sole
878.98K
Shared
0.00
None
141.02K
VERTIV HOLDINGS CO
SOLEShares3.40M
TypeSH
Market value$277.62M
1.46%
Sole
2.43M
Shared
0.00
None
964.86K
AXON ENTERPRISE INC
SOLEShares709.31K
TypeSH
Market value$221.93M
1.17%
Sole
487.56K
Shared
0.00
None
221.75K
SERVICENOW INC
SOLEShares281.39K
TypeSH
Market value$214.53M
1.13%
Sole
244K
Shared
0.00
None
37.38K
DEXCOM INC
SOLEShares1.54M
TypeSH
Market value$213.52M
1.12%
Sole
1.20M
Shared
0.00
None
343.50K
COMFORT SYS USA INC
SOLEShares667.04K
TypeSH
Market value$211.92M
1.11%
Sole
490.66K
Shared
0.00
None
176.38K
UNITEDHEALTH GROUP INC
SOLEShares426.64K
TypeSH
Market value$211.06M
1.11%
Sole
366.62K
Shared
0.00
None
60.02K
ICON PLC
SOLEShares536.88K
TypeSH
Market value$180.37M
0.95%
Sole
423.86K
Shared
0.00
None
113.03K
SALESFORCE INC
SOLEShares590.56K
TypeSH
Market value$177.87M
0.93%
Sole
509.60K
Shared
0.00
None
80.97K
AMETEK INC
SOLEShares953.60K
TypeSH
Market value$174.41M
0.92%
Sole
751.44K
Shared
0.00
None
202.16K
OPTION CARE HEALTH INC
SOLEShares5.17M
TypeSH
Market value$173.45M
0.91%
Sole
3.81M
Shared
0.00
None
1.36M
M/I HOMES INC
SOLEShares1.22M
TypeSH
Market value$166.27M
0.87%
Sole
894.62K
Shared
0.00
None
325.37K
LINCOLN ELEC HLDGS INC
SOLEShares646.44K
TypeSH
Market value$165.13M
0.87%
Sole
463.81K
Shared
0.00
None
182.64K
ABBVIE INC
SOLEShares887.18K
TypeSH
Market value$161.56M
0.85%
Sole
743.60K
Shared
0.00
None
143.58K
COSTAR GROUP INC
SOLEShares1.65M
TypeSH
Market value$159.14M
0.84%
Sole
1.26M
Shared
0.00
None
384.13K
SAIA INC
SOLEShares259.08K
TypeSH
Market value$151.56M
0.80%
Sole
199.13K
Shared
0.00
None
59.96K
| Issuer | Class | Shares | Type | Value / Portfolio % | Voting — Sole | Shared | None |
|---|---|---|---|---|---|---|---|
MICROSOFT CORPSOLE | COM | 1.52M | SH | $640.73M 3.36% | 1.30M | 0.00 | 226.12K |
ASCENDIS PHARMA A/SSOLE | SPONSORED ADR | 4.08M | SH | $616.05M 3.23% | 3.26M | 0.00 | 813.23K |
APPLE INCSOLE | COM | 3.24M | SH | $555.12M 2.91% | 2.80M | 0.00 | 442.13K |
NVIDIA CORPORATIONSOLE | COM | 599.97K | SH | $542.11M 2.85% | 523.04K | 0.00 | 76.93K |
AMAZON COM INCSOLE | COM | 2.63M | SH | $475.02M 2.49% | 2.29M | 0.00 | 339.35K |
ALPHABET INCSOLE | CAP STK CL A | 2.96M | SH | $446.24M 2.34% | 2.59M | 0.00 | 367.94K |
TRANSDIGM GROUP INCSOLE | COM | 315.37K | SH | $388.42M 2.04% | 253.67K | 0.00 | 61.70K |
META PLATFORMS INCSOLE | CL A | 702.58K | SH | $341.16M 1.79% | 618.26K | 0.00 | 84.33K |
BUILDERS FIRSTSOURCE INCSOLE | COM | 1.38M | SH | $288.07M 1.51% | 963.96K | 0.00 | 417.32K |
VISA INCSOLE | COM CL A | 1.02M | SH | $284.66M 1.49% | 878.98K | 0.00 | 141.02K |
VERTIV HOLDINGS COSOLE | COM CL A | 3.40M | SH | $277.62M 1.46% | 2.43M | 0.00 | 964.86K |
AXON ENTERPRISE INCSOLE | COM | 709.31K | SH | $221.93M 1.17% | 487.56K | 0.00 | 221.75K |
SERVICENOW INCSOLE | COM | 281.39K | SH | $214.53M 1.13% | 244K | 0.00 | 37.38K |
DEXCOM INCSOLE | COM | 1.54M | SH | $213.52M 1.12% | 1.20M | 0.00 | 343.50K |
COMFORT SYS USA INCSOLE | COM | 667.04K | SH | $211.92M 1.11% | 490.66K | 0.00 | 176.38K |
UNITEDHEALTH GROUP INCSOLE | COM | 426.64K | SH | $211.06M 1.11% | 366.62K | 0.00 | 60.02K |
ICON PLCSOLE | SHS | 536.88K | SH | $180.37M 0.95% | 423.86K | 0.00 | 113.03K |
SALESFORCE INCSOLE | COM | 590.56K | SH | $177.87M 0.93% | 509.60K | 0.00 | 80.97K |
AMETEK INCSOLE | COM | 953.60K | SH | $174.41M 0.92% | 751.44K | 0.00 | 202.16K |
OPTION CARE HEALTH INCSOLE | COM NEW | 5.17M | SH | $173.45M 0.91% | 3.81M | 0.00 | 1.36M |
M/I HOMES INCSOLE | COM | 1.22M | SH | $166.27M 0.87% | 894.62K | 0.00 | 325.37K |
LINCOLN ELEC HLDGS INCSOLE | COM | 646.44K | SH | $165.13M 0.87% | 463.81K | 0.00 | 182.64K |
ABBVIE INCSOLE | COM | 887.18K | SH | $161.56M 0.85% | 743.60K | 0.00 | 143.58K |
COSTAR GROUP INCSOLE | COM | 1.65M | SH | $159.14M 0.84% | 1.26M | 0.00 | 384.13K |
SAIA INCSOLE | COM | 259.08K | SH | $151.56M 0.80% | 199.13K | 0.00 | 59.96K |
Page 1 of 10
…