WESTFIELD CAPITAL MANAGEMENT CO LP

Position in COHR — Coherent Corp.

CIK 1177719 BOSTON, MA

Position in COHR

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

Position Value

$114,806,548

+$20,321,981 QoQ

Shares Held

291,040

-26.6% QoQ

Ownership

0.149%

of shares outstanding

% of Portfolio

0.38%

of 13F equity value

Holder Rank

#76

of 1,300 holders

Holding Since

Mar 2024

8 quarters on record

Voting authority Sole 84% Shared 0% None 16%

Technology · as of Jun 30, 2026

WESTFIELD CAPITAL MANAGEMENT CO LP holds $843,296,253 across 5 Scientific & Technical Instruments names. COHR ranks #3 (13.6% 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. This page	291,040	$114,806,548
4	ST	Sensata Technologies Holding plc	1,333,853	$63,678,142
5	KEYS	Keysight Technologies, Inc.	134,908	$47,227,243

8 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$114,806,548	291,040	-26.6%	Shares	Sole	2026-08-12
2026-03-31	$94,484,567	396,644	-40.4%	Shares	Sole	2026-05-11
2025-12-31	$122,761,752	665,123	-54.8%	Shares	Sole	2026-02-11
2025-09-30	$158,667,574	1,472,963	+90.2%	Shares	Sole	2025-11-12
2025-06-30	$69,069,504	774,235	+95.8%	Shares	Sole	2025-08-12
2025-03-31	$25,684,029	395,504	-63.8%	Shares	Sole	2025-05-09
2024-06-30	$79,155,666	1,092,405	-3.3%	Shares	Sole	2024-08-14
2024-03-31	$68,487,081	1,129,777	—	Shares	Sole	2024-05-10
No filing history on record for this holder in this stock.