WESTFIELD CAPITAL MANAGEMENT CO LP

Position in KEYS — Keysight Technologies, Inc.

CIK 1177719 BOSTON, MA

Position in KEYS

as of Jun 30, 2026 · filed Aug 12, 2026 Compact

Position Value

$47,227,243

New position

Shares Held

134,908

first reported quarter

Ownership

0.079%

of shares outstanding

% of Portfolio

0.16%

of 13F equity value

Holder Rank

#139

of 1,242 holders

Holding Since

Jun 2026

1 quarter on record

Voting authority Sole 81% Shared 0% None 19%

Technology · as of Jun 30, 2026

WESTFIELD CAPITAL MANAGEMENT CO LP holds $843,296,253 across 5 Scientific & Technical Instruments names. KEYS ranks #5 (5.6% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	MKSI	Mks Inc	928,617	$413,048,841
2	GRMN	Garmin Ltd	861,057	$204,535,479
3	COHR	Coherent Corp.	291,040	$114,806,548
4	ST	Sensata Technologies Holding plc	1,333,853	$63,678,142
5	KEYS	Keysight Technologies, Inc. This page	134,908	$47,227,243

1 filing row on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$47,227,243	134,908	—	Shares	Sole	2026-08-12
No filing history on record for this holder in this stock.