WESTFIELD CAPITAL MANAGEMENT CO LP

Position in ROKU — Roku, Inc

CIK 1177719 BOSTON, MA

Position in ROKU

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

Position Value

$98,985,183

-$12,497,898 QoQ

Shares Held

716,557

-39.2% QoQ

Ownership

0.483%

of shares outstanding

% of Portfolio

0.33%

of 13F equity value

Holder Rank

#34

of 780 holders

Holding Since

Dec 2020

13 quarters on record

Voting authority Sole 91% Shared 0% None 9%

Communication Services · as of Jun 30, 2026

WESTFIELD CAPITAL MANAGEMENT CO LP holds $333,714,453 across 4 Entertainment names. ROKU ranks #3 (29.7% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	LYV	Live Nation Entertainment, Inc.	590,764	$108,174,796
2	IMAX	Imax Corp	2,654,014	$105,788,998
3	ROKU	Roku, Inc This page	716,557	$98,985,183
4	NFLX	Netflix Inc	290,833	$20,765,476

13 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$98,985,183	716,557	-39.2%	Shares	Sole	2026-08-12
2026-03-31	$111,483,081	1,178,219	+5.9%	Shares	Sole	2026-05-11
2025-12-31	$120,692,738	1,112,478	+0.9%	Shares	Sole	2026-02-11
2025-09-30	$110,392,123	1,102,488	+0.4%	Shares	Sole	2025-11-12
2025-06-30	$96,477,468	1,097,707	-1.8%	Shares	Sole	2025-08-12
2025-03-31	$78,733,535	1,117,739	-0.1%	Shares	Sole	2025-05-09
2024-12-31	$83,200,064	1,119,183	-27.1%	Shares	Sole	2025-02-11
2024-09-30	$114,646,104	1,535,576	+126.1%	Shares	Sole	2024-11-12
2024-06-30	$40,702,957	679,175	+225.9%	Shares	Sole	2024-08-14
2021-09-30	$65,300,259	208,394	+24.4%	Shares	Sole	2021-11-12
2021-06-30	$76,950,093	167,556	+18.9%	Shares	Sole	2021-08-10
2021-03-31	$45,895,780	140,884	-24.1%	Shares	Sole	2021-05-14
2020-12-31	$61,597,678	185,524	—	Shares	Sole	2021-02-12
No filing history on record for this holder in this stock.