FRONTIER CAPITAL MANAGEMENT CO LLC
CIK 0000351173 · BOSTON, MA · Quarter end: 2026-06-30 · Filed on: 2026-08-14 · Open the SEC source ↗
Portfolio Value (AUM)Total value of the fund's US stock portfolio reported to the SEC.
$10.73B
2026 Q2
Positions
300
Top-10 ConcentrationHow much of the portfolio sits in the 10 largest holdings. High = concentrated bets.
14.5%
Est. Net Flow (Q)
—
2026 Q2
Top Holdings
FTAI
FTAI AVIATION LTD
3.0%
GVA
GRANITE CONSTR INC
1.6%
ALK
ALASKA AIR GROUP INC
1.6%
AAOI
APPLIED OPTOELECTRONICS INC
1.3%
AKAM
AKAMAI TECHNOLOGIES INC
1.3%
ASH
ASHLAND INC
1.2%
LSCC
LATTICE SEMICONDUCTOR CORP
1.2%
BPOP
POPULAR INC
1.1%
New / Increased
No prior quarter data
Reduced / Exited
No prior quarter data
Read the 2026-Q2 quarterly report · 13F Filing Calendar
13F data shows quarter-end positions, is delayed by up to 45 days and covers only long positions in US-listed securities; short positions, most derivatives and non-US assets are not reported.