WESTFIELD CAPITAL MANAGEMENT CO LP

Q2 2023 13F-HR Holdings

Location
Boston, MA
Holdings as of
6/30/2023
Date filed
8/11/2023
Form type
13F-HR
Num holdings
227
Total value ($000)
$15,739,052
Net value change ($000)
+1,588,071 (11.2%)
New positions
32
Sold out positions
27
Turnover %
14.4%
Sector allocation + QoQ delta (equities-only)
Prev filing: 5/12/2023 Next filing: 11/13/2023 SEC filing

Snapshot: Change Analysis

Compared to Q1 2023
Methodology: sector metrics are equities-only; instrument mix chart is ex-options; options exposure is shown separately. Why this matters.
Top Adds (Value $000, Stocks/ETFs)
BLDR 158,534 244.2%
MASI 156,948 NEW
META 127,493 158.5%
AMZN 116,900 58.9%
HUBB 102,855 NEW
NVDA 94,220 71.6%
TXRH 85,103 193.5%
INSP 84,060 85.0%
GOOGL 77,961 23.8%
OPCH 75,660 161.8%
Top Reduces (Value $000, Stocks/ETFs)
TDY -126,938 -98.4%
ATKR -99,006 -100.0%
Prometheus Biosciences, Inc. -73,481 -100.0%
PYPL -70,486 -100.0%
TEAM -64,551 -100.0%
CAKE -61,766 -97.8%
TMO -61,097 -70.7%
EPAM -58,916 -100.0%
MAR -58,516 -100.0%
COP -56,935 -98.9%
Instrument mix + QoQ Δ (ex-options)
How this table is calculated: SEC VALUE ($000) is used as reported. For derivatives (PUT/CALL/WARRANT/RIGHT), SEC value represents reported underlying exposure, not premium cash paid/received. Column % is bucket-based: non-options share is calculated inside non-option total, options share is calculated inside options total. Details.
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Instrument:
Issuer Name Ticker Sector Industry Class History Value ($000) % Shares Shares Δ Shares Δ% Value Δ ($000) Value Δ% Principal Option Type