WESTFIELD CAPITAL MANAGEMENT CO LP

Q4 2021 13F-HR Holdings

Location
Boston, MA
Holdings as of
12/31/2021
Date filed
2/10/2022
Form type
13F-HR
Num holdings
244
Total value ($000)
$16,825,241
Net value change ($000)
+245,057 (1.5%)
New positions
42
Sold out positions
33
Turnover %
14.5%
Sector allocation + QoQ delta (equities-only)
Prev filing: 11/12/2021 Next filing: 5/16/2022 SEC filing

Snapshot: Change Analysis

Compared to Q3 2021
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)
TSLA 92,226 NEW
ENCORE WIRE CORP 83,103 710.2%
WSC 82,624 NEW
Horizon Therapeutics Public Ltd Co 76,705 NEW
AAPL 76,356 11.5%
SPGI 73,386 4041.1%
MAR 72,642 NEW
BN 69,120 NEW
FTNT 65,014 39.3%
WCC 63,334 NEW
Top Reduces (Value $000, Stocks/ETFs)
XLRN -154,012 -100.0%
PYPL -147,294 -94.1%
MELI -112,748 -99.2%
SYF -101,441 -100.0%
CMG -91,730 -100.0%
Oak Street Health, Inc. -86,681 -99.5%
BSX -83,430 -96.0%
BIIB -83,057 -98.8%
FCX -68,687 -99.1%
ALGN -66,801 -100.0%
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