FRONTIER CAPITAL MANAGEMENT CO LLC

Q4 2025 13F Holdings Report, Stock Holdings

Signature - Title
Robert E. Phay, Jr. - Chief Compliance Officer
Location
Boston, MA
Holdings as of
31 Dec 2025
Value $
$9,423,596,169
Num holdings
295
Filing time
17 Feb 2026, 09:04:50 UTC
Form type
13F-HR
Description
All US holdings of this investor are reported in this report. Top holdings included FTAI, AMTM, GVA, ATI, and MDB.
Previous filing
Q3 2025 - 14 Nov 2025
SEC
View on sec.gov

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Quoteable Key Fact

"FRONTIER CAPITAL MANAGEMENT CO LLC reported $9,423,596,169 across 295 holdings in Q4 2025."

Quick Takeaways

  • FRONTIER CAPITAL MANAGEMENT CO LLC reported 13f holdings report, stock holdings for Q4 2025.
  • Reported holdings value: $9,423,596,169.
  • 295 holdings are listed in this filing snapshot.

What Changed

  • Previous comparable filing: Q3 2025.
  • Value moved from $11,154,752,830 to $9,423,596,169.

Why This Matters

  • This filing-level page explains what the portfolio report tells you before the holdings table.
  • You can cite quarter, value, and filing timestamp directly from SEC-linked data.

Official SEC Source

Backed by Form 13F

Portfolio-level numbers on this page come from the original SEC Form 13F filing.

See Original Filing
Sym Weight Trade Impact Company Class Share Change Activity Value Change $ Value $ * Price $ Shares Principal
Filing 2025 Q4 compared to 2025 Q3 by default. Changes are calculated vs the previous SEC filing.
* Reported Price is the price of the security as of the portfolio date. This value is significant in that it is the last known price at which the security was still held.
An asterisk sign (*) next to the price indicates that the price is likely invalid.

Person Signing this Report on Behalf of Reporting Manager:

Name Title City, State Date
Robert E. Phay, Jr. Chief Compliance Officer Boston, Massachusetts 17 Feb 2026

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