FRONTIER CAPITAL MANAGEMENT CO LLC

Q2 2025 13F-HR Holdings

Location
Boston, MA
Holdings as of
6/30/2025
Date filed
8/14/2025
Form type
13F-HR
Num holdings
294
Total value ($000)
$10,801,284
Net value change ($000)
+1,656,260 (18.1%)
New positions
25
Sold out positions
14
Turnover %
8.9%
Sector allocation + QoQ delta (equities-only)
Prev filing: 5/15/2025 Next filing: 11/14/2025 SEC filing

Snapshot: Change Analysis

Compared to Q1 2025
Methodology: sector metrics are equities-only; instrument mix chart is ex-options; options exposure is shown separately. Why this matters.
Top Adds (Value $000, Stocks/ETFs)
RBLX 67,646 NEW
SIMO 66,225 220.2%
VST 63,866 NEW
AMTM 63,795 97.9%
DAR 63,529 101.5%
MKSI 60,976 205.5%
ATI 56,774 41.9%
NET 52,974 12150.0%
CUSHMAN WAKEFIELD PLC 51,764 NEW
TER 49,274 1313.6%
Top Reduces (Value $000, Stocks/ETFs)
QXO BUILDING PRODUCTS, INC. -173,853 -100.0%
CZR -50,001 -52.5%
UTHR -39,678 -41.0%
PLTR -37,705 -43.5%
GTLB -29,822 -89.4%
CTSH -28,029 -56.5%
INSM -27,663 -65.0%
CURB -24,879 -68.3%
CFLT -23,880 -71.9%
KBR -23,833 -38.3%
Instrument mix + QoQ Δ (ex-options)
How this table is calculated: SEC VALUE ($000) is used as reported. For derivatives (PUT/CALL/WARRANT/RIGHT), SEC value represents reported underlying exposure, not premium cash paid/received. Column % is bucket-based: non-options share is calculated inside non-option total, options share is calculated inside options total. Details.
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Instrument:
Issuer Name Ticker Sector Industry Class History Value ($000) % Shares Shares Δ Shares Δ% Value Δ ($000) Value Δ% Principal Option Type