WESTFIELD CAPITAL MANAGEMENT CO LP

Q4 2020 13F-HR Holdings

Location
Boston, MA
Holdings as of
12/31/2020
Date filed
2/12/2021
Form type
13F-HR
Num holdings
247
Total value ($000)
$16,852,328
Net value change ($000)
+1,404,012 (9.1%)
New positions
41
Sold out positions
29
Turnover %
13.3%
Sector allocation + QoQ delta (equities-only)
Prev filing: 11/13/2020 Next filing: 5/14/2021 SEC filing

Snapshot: Change Analysis

Compared to Q3 2020
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)
ABBV 148,791 NEW
ESS 111,922 NEW
MS 105,913 NEW
Seagen Inc. 94,552 NEW
BIO 86,583 56.4%
XLNX 77,353 NEW
EYE 76,681 195.6%
Zendesk, Inc. 70,421 27.8%
TDG 62,732 35.1%
ROKU 61,598 NEW
Top Reduces (Value $000, Stocks/ETFs)
CHTR -129,676 -100.0%
ALGN -127,952 -100.0%
TMUS -107,692 -99.0%
AMT -102,329 -96.0%
SBAC -78,636 -95.4%
DBX -76,793 -100.0%
Seagen Inc. -76,714 -100.0%
JBHT -66,869 -100.0%
MRSH -64,870 -100.0%
FIS -64,074 -30.7%
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