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Latest FRONTIER CAPITAL MANAGEMENT CO LLC Stock Portfolio

$10.73Billion | No. of Holdings #300

FRONTIER CAPITAL MANAGEMENT CO LLC Performance

2026 Q2+15.45%
YTD+18.61%
2025+10.52%

About FRONTIER CAPITAL MANAGEMENT CO LLC and 13F Hedge Fund Stock Holdings

FRONTIER CAPITAL MANAGEMENT CO LLC is a hedge fund based in Boston, MA. On 2026-08-14, the fund reported it's updated stock portfolio. In the 13F Holdings report, FRONTIER CAPITAL MANAGEMENT CO LLC reported an equity portfolio of $10.7 Billions as of 30 Jun, 2026. <br><br> The top stock holdings of FRONTIER CAPITAL MANAGEMENT CO LLC are FTAI, GVA, ALK. The fund has invested 3% of it's portfolio in FTAI AVIATION LTD and 1.6% of portfolio in GRANITE CONSTR INC. <br><br> The fund managers got completely rid off MARVELL TECHNOLOGY INC (MRVL), NUVALENT INC (NUVL) and DIODES INC (DIOD) stocks. They significantly reduced their stock positions in SILICON MOTION TECHNOLOGY CO (SIMO), LITHIA MTRS INC (LAD) and SILA REALTY TRUST INC. FRONTIER CAPITAL MANAGEMENT CO LLC opened new stock positions in DYNATRACE INC (DT), PRIMORIS SVCS CORP (PRIM) and STANDARDAERO INC. The fund showed a lot of confidence in some stocks as they added substantially to IONQ INC (IONQ), PAGAYA TECHNOLOGIES LTD (PGY) and ZSCALER INC (ZS).
FRONTIER CAPITAL MANAGEMENT CO LLC Equity Portfolio Value
Last Reported on: 14 Aug, 2026
$10.73Billion
  as of Aug 14, 2026

FRONTIER CAPITAL MANAGEMENT CO LLC Annual Return Estimates Vs S&P 500

Our best estimate is that FRONTIER CAPITAL MANAGEMENT CO LLC made a return of 15.45% in the last quarter. In trailing 12 months, it's portfolio return was 29.93%.
  • Performance
  • S&P 500

New Buys

Ticker$ Bought
dynatrace inc71,818,600
primoris svcs corp46,463,700
standardaero inc43,349,600
alkermes plc34,557,700
etoro group ltd32,840,500
sensata technologies hldg pl31,403,000
veradermics inc31,334,500
united states antimony corp31,197,800
New stocks bought by FRONTIER CAPITAL MANAGEMENT CO LLC

Additions

Ticker% Inc.
ionq inc6,169
pagaya technologies ltd1,067
zscaler inc545
hubbell inc378
insulet corp260
applied optoelectronics inc243
universal display corp230
snowflake inc217
Additions to existing portfolio by FRONTIER CAPITAL MANAGEMENT CO LLC

Reductions

Ticker% Reduced
silicon motion technology co-99.02
lithia mtrs inc-97.54
sila realty trust inc-86.01
cohu inc-84.49
revolution medicines inc-78.69
astera labs inc-77.54
guidewire software inc-72.61
align technology inc-72.47
FRONTIER CAPITAL MANAGEMENT CO LLC reduced stake in above stock

Sold off

Ticker$ Sold
quidelortho corp-28,795,400
grid dynamics hldgs inc-6,435,730
diodes inc-40,444,000
sun ctry airls hldgs inc-9,652,810
marvell technology inc-53,584,000
caesars entertainment inc ne-13,304,700
nuvalent inc-40,523,700
tractor supply co-16,424,600
FRONTIER CAPITAL MANAGEMENT CO LLC got rid off the above stocks

Sector Distribution

FRONTIER CAPITAL MANAGEMENT CO LLC has about 21.9% of it's holdings in Industrials sector.

  • Industrials
  • Technology
  • Healthcare
  • Others
  • Financial Services
  • Consumer Cyclical
  • Energy
  • Basic Materials
  • Consumer Defensive
  • Real Estate
Sector%
Industrials21.9
Technology20.8
Healthcare14.9
Others11.9
Financial Services9.5
Consumer Cyclical7
Energy4.1
Basic Materials3
Consumer Defensive2.9
Real Estate2.7

Market Cap. Distribution

FRONTIER CAPITAL MANAGEMENT CO LLC has about 38.7% of it's portfolio invested in the large-cap and mega-cap stocks.

  • MID-CAP
  • LARGE-CAP
  • UNALLOCATED
  • SMALL-CAP
Category%
MID-CAP42
LARGE-CAP38.7
UNALLOCATED11.6
SMALL-CAP6.6

Stocks belong to which Index?

About 50.5% of the stocks held by FRONTIER CAPITAL MANAGEMENT CO LLC either belong to S&P 500 or RUSSELL 2000 index.

  • Others
  • RUSSELL 2000
  • S&P 500
Index%
Others49.5
RUSSELL 200039.8
S&P 50010.7
Top 5 Winners (%)%
astera labs inc
208.6 %
FLEX
flex ltd
138.1 %
CRDO
credo technology group holdi
134.3 %
SITM
sitime corp
109.1 %
SIMO
silicon motion technology co
99.4 %
Top 5 Winners ($)$
astera labs inc
157.4 M
UCTT
ultra clean hldgs inc
98.7 M
SANM
sanmina corp
62.7 M
ALK
alaska air group inc
52.1 M
GVA
granite constr inc
44.1 M
Top 5 Losers (%)%
EPAM
epam sys inc
-40.5 %
AGI
alamos gold inc
-30.4 %
INSM
insmed inc
-29.8 %
circle internet group inc
-28.3 %
PLNT
planet fitness master issuer
-26.6 %
Top 5 Losers ($)$
circle internet group inc
-41.8 M
INSM
insmed inc
-36.0 M
amentum holdings inc
-24.5 M
PODD
insulet corp
-22.9 M
TDW
tidewater inc new
-16.6 M

FRONTIER CAPITAL MANAGEMENT CO LLC Holdings Map

This heatmap illustrates the top 50 positions within the fund's portfolio.

Current Stock Holdings of FRONTIER CAPITAL MANAGEMENT CO LLC

FRONTIER CAPITAL MANAGEMENT CO LLC has 300 stocks in it's portfolio. About 14.5% of the portfolio is in top 10 stocks. proved to be the most loss making stock for the portfolio. was the most profitable stock for FRONTIER CAPITAL MANAGEMENT CO LLC last quarter.

$10.73BTotal Value
324Positions
14 Aug, 2026Last Reported
Current holdings of Current Stock Holdings of FRONTIER CAPITAL MANAGEMENT CO LLC, last reported on 14 Aug, 2026. Select a row with a linked ticker to view its historical trend.
ExpandHoldingsorted ascending% PortfolioShares Held$ Value% Change
AGI
Alamos Gold Inc

Alamos Gold Inc

AGI
FRONTIER CAPITAL MANAGEMENT CO LLC's holding in Alamos Gold Inc over time
0.19%665,814
$20.20M
0.19%
decreased 8.11 percentreduced
ALC
Alcon Ag

Alcon Ag

ALC
FRONTIER CAPITAL MANAGEMENT CO LLC's holding in Alcon Ag over time
0.1%152,897
$10.26M
0.1%
decreased 5.03 percentreduced