FRONTIER CAPITAL MANAGEMENT CO LLC

Est. AUM

$9.73B

13F long equity, this entity only

Positions

291

Period

Mar 2026 (Q1)

SEC EDGAR

View filings ↗

Mar 2026 (Q1)

#	Issuer	Class	Value	Shares	% Portfolio	Discretion
1	FTAI AVIATION LTD	SHS	$260.2M	1062210	2.67%	SOLE
2	DARLING INGREDIENTS INC	COM	$151.9M	2455668	1.56%	SOLE
3	UNITED THERAPEUTICS CORP DEL	COM	$149.8M	252702	1.54%	SOLE
4	CIRCLE INTERNET GROUP INC	COM CL A	$147.7M	1548150	1.52%	SOLE
5	GRANITE CONSTR INC	COM	$142.4M	1187736	1.46%	SOLE
6	STRIDE INC	COM	$136.6M	1549291	1.40%	SOLE
7	AMENTUM HOLDINGS INC	COM	$128.6M	4930210	1.32%	SOLE
8	XPO INC	COM	$126.9M	652073	1.30%	SOLE
9	ALASKA AIR GROUP INC	COM	$124.1M	3373587	1.28%	SOLE
10	KNIGHT-SWIFT TRANSN HLDGS IN	CL A	$120.1M	2086544	1.23%	SOLE
11	AKAMAI TECHNOLOGIES INC	COM	$119.0M	1036569	1.22%	SOLE
12	EAGLE MATLS INC	COM	$115.7M	610654	1.19%	SOLE
13	ULTRA CLEAN HLDGS INC	COM	$111.1M	1787451	1.14%	SOLE
14	POPULAR INC	COM NEW	$107.5M	800930	1.10%	SOLE
15	ASHLAND INC	COM	$106.4M	1912689	1.09%	SOLE
16	ATI INC	COM	$101.0M	694422	1.04%	SOLE
17	JAZZ PHARMACEUTICALS PLC	SHS USD	$97.8M	517284	1.01%	SOLE
18	TIDEWATER INC NEW	COM	$89.6M	1072793	0.92%	SOLE
19	APOGEE THERAPEUTICS INC	COM	$89.6M	1064483	0.92%	SOLE
20	ENTEGRIS INC	COM	$88.5M	754706	0.91%	SOLE
21	MONOLITHIC PWR SYS INC	COM	$87.1M	79699	0.90%	SOLE
22	KIRBY CORP	COM	$85.6M	644329	0.88%	SOLE
23	AGREE RLTY CORP	COM	$83.0M	1101386	0.85%	SOLE
24	SANMINA CORP	COM	$82.6M	637388	0.85%	SOLE
25	INSMED INC	COM PAR $.01	$76.8M	469561	0.79%	SOLE
26	ASTERA LABS INC	COM	$75.4M	688213	0.78%	SOLE
27	LIBERTY ENERGY INC	COM CL A	$71.8M	2494222	0.74%	SOLE
28	BRIDGEBIO PHARMA INC	COM	$71.1M	957989	0.73%	SOLE
29	BUILDERS FIRSTSOURCE INC	COM	$70.8M	860494	0.73%	SOLE
30	BURLINGTON STORES INC	COM	$70.5M	216537	0.72%	SOLE
31	PERDOCEO ED CORP	COM	$68.7M	1846986	0.71%	SOLE
32	WEATHERFORD INTL PLC	ORD SHS	$68.6M	725497	0.71%	SOLE
33	ROYAL CARIBBEAN GROUP	COM	$65.6M	238299	0.67%	SOLE
34	INTUITIVE MACHINES INC	CLASS A COM	$65.2M	3513799	0.67%	SOLE
35	WINTRUST FINL CORP	COM	$64.2M	462012	0.66%	SOLE
36	SAIA INC	COM	$64.1M	182492	0.66%	SOLE
37	SILA REALTY TRUST INC	COMMON STOCK	$63.9M	2696692	0.66%	SOLE
38	KYMERA THERAPEUTICS INC	COM	$63.3M	759848	0.65%	SOLE
39	FIRST BANCORP CORPORATION	COM NEW	$62.5M	2923738	0.64%	SOLE
40	INDIE SEMICONDUCTOR INC	CLASS A COM	$62.0M	19246088	0.64%	SOLE
41	RENASANT CORP	COM	$61.5M	1702713	0.63%	SOLE
42	NATERA INC	COM	$58.9M	294347	0.61%	SOLE
43	ANTERO RESOURCES CORP	COM	$57.3M	1349237	0.59%	SOLE
44	ELANCO ANIMAL HEALTH INC	COM	$56.5M	2362526	0.58%	SOLE
45	LATTICE SEMICONDUCTOR CORP	COM	$56.1M	605318	0.58%	SOLE
46	EVERPURE INC	CL A	$55.8M	944522	0.57%	SOLE
47	EASTERN BANKSHARES INC	COM	$55.6M	2840293	0.57%	SOLE
48	SELECTIVE INS GROUP INC	COM	$55.0M	729748	0.57%	SOLE
49	FIRST INDL RLTY TR INC	COM	$54.7M	946365	0.56%	SOLE
50	TERADYNE INC	COM	$54.3M	183204	0.56%	SOLE

1–50 of 291

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Values in USD (reported in $thousands on 13F). Source: SEC EDGAR.