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Frontier Capital Management Co. LLC

CIK:0000351173
Asset Manager
$11B AUM
294 holdings
Boston, MA, United States
Founded:1980
39 employees
Latest filing:Jun 30, 2025

Frontier Capital Management Company, LLC is a Boston, Massachusetts-based investment adviser founded in 1980. The firm manages equity portfolios principally for institutional clients, including corporate and public pension plans, foundations, endowments, municipalities, mutual funds, collective trusts, and private investment funds. As of the latest data, it employs approximately 39–41 people at its single Boston office. The firm is majority-owned by Affiliated Managers Group, Inc. (AMG) but operates with full investment autonomy.

Investment Strategy

Frontier Capital Management specializes in managing growth and value equity portfolios with a fundamental, research-driven approach. The firm invests in publicly traded equities, focusing on identifying companies with strong and sustainable growth prospects. Frontier primarily serves institutional investors through both separately managed accounts and as a sub-adviser to mutual funds and other pooled vehicles. The investment process emphasizes deep fundamental research, proprietary analysis, and a disciplined risk management framework, seeking to deliver long-term value through insight-driven stock selection and portfolio construction.

Top Buys
R
RBLXROBLOX CORP
+$67.6M
S
SIMOSILICON MOTION TECHNOLOGY CO
+$66.2M
V
VSTVISTRA CORP
+$63.9M
A
AMTMAMENTUM HOLDINGS INC
+$63.8M
D
DARDARLING INGREDIENTS INC
+$63.5M
Top Sells
B
BECNBEACON ROOFING SUPPLY INC
-$173.9M
C
CZRCAESARS ENTERTAINMENT INC NE
-$50.0M
U
UTHRUNITED THERAPEUTICS CORP DEL
-$39.7M
P
PLTRPALANTIR TECHNOLOGIES INC
-$37.7M
G
GTLBGITLAB INC
-$29.8M

Top Holdings

F
FTAIFTAI AVIATION LTD
+2.3%$246.7M
A
ATIATI INC
+1.8%$192.2M
M
MATMATTEL INC
+1.6%$177.1M
E
EXPEAGLE MATLS INC
+1.6%$167.8M
X
XPOXPO INC
+1.3%$143.2M

Equity Positions (291)

TickerSecurityWeightMarket ValueSharesAvg CostPriceChange (QoQ)
F
FTAI
FTAI AVIATION LTD2.28%$246.7M2,144,625$38.84$115.04+$21.8M
A
ATI
ATI INC1.78%$192.2M2,225,724$29.72$86.34+$56.8M
M
MAT
MATTEL INC1.64%$177.1M8,980,205$16.06$19.72+$3.7M
E
EXP
EAGLE MATLS INC1.55%$167.8M830,284$172.76$202.11+$32.3M
X
XPO
XPO INC1.33%$143.2M1,133,879$59.65$126.29+$16.1M

Industry Allocation

SERVICES-PREPACKAGED SOFTWARE
+8.4%
SEMICONDUCTORS & RELATED DEVICES
+6.1%
REAL ESTATE INVESTMENT TRUSTS
+4.7%
SURGICAL & MEDICAL INSTRUMENTS & APPARATUS
+3.0%
SERVICES-BUSINESS SERVICES, NEC
+2.8%