FRONTIER CAPITAL MANAGEMENT CO LLCFRONTIER CAPITAL MANAGEMENT CO LLC

Institutional investor · Portfolio as of Q4 2025

SEC EDGAR SourceSEC Filings
$9.4B
AUM
295
Positions
Q4 2025
Filing
Rating · 2.5
Quarterly Portfolio Change
+5%Q3'24$10.6B-1%Q4'24$10.5B-13%Q1'25$9.1B+18%Q2'25$10.8B+3%Q3'25$11.2B-16%Q4'25$9.4B
Activity profile
$ moved · Q4'25
New9%Increased23%Decreased59%Exited10%
Composition
Equity vs derivatives
Equity100%Puts0%Calls0%
Holding period
Avg 3.4 years
<1Q7%1-4Q18%1-2Y16%2Y+58%

FRONTIER CAPITAL MANAGEMENT CO LLC manages $9.4B across 295 positions as of Q4 2025. Top holdings: FTAI (2.7%), AMTM (1.8%), GVA (1.5%). Fund DNA: Balanced Allocator. HoldingsIntel Rating: 2.5/5.0.

Q4 2025 Summary

Active quarter - 24 new positions, 26 exits, 92 increased. Top move: ALAB (INCREASED, conviction 77). Portfolio: $9.4B across 295 positions.

Top holdings by portfolio weight

Total AUM$9B
FTAI2.71%
AMTM1.78%
GVA1.54%
ATI1.49%
MDB1.35%
ALAB1.30%
NTRA1.27%
BPOP1.26%
ALK1.22%
EXP1.20%
Other1.17%

Portfolio allocation by GICS sector

Sectors11
Technology24.01%
Industrials23.12%
Healthcare13.88%
Financial Services12.63%
Consumer Cyclical10.20%
Real Estate4.70%
Consumer Defensive3.20%
Basic Materials3.01%
Energy2.59%
Communication Services1.36%
Other1.30%

Behavioral investing profile

7-dimension quality assessment
Solid(2.5 / 5.0)
Track Record69
Conviction36
Concentration0
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Position Outcomes

Best and worst performing positions by estimated return

Cost basis estimates based on full filing history using quarter-end prices. Actual transaction prices are not disclosed in 13F filings.

Holdings295 positions

Activity:
Stock
Shares
Value
Weight
Avg Buy
Est. P&L
Held
Conviction

FTAI AVIATION LTD

1.3M$255.2M2.7%$37.76+423.53%
13 qtrssince 2022-Q4
Decreased
0

AMENTUM HOLDINGS INC

5.8M$167.4M1.8%$20.85+40.52%
4 qtrssince 2025-Q1
Increased
53

GRANITE CONSTR INC

1.3M$145.1M1.5%$49.00+138.02%
28 qtrssince 2019-Q1
Decreased
0

ATI INC

1.2M$140.9M1.5%$29.87+288.88%
28 qtrssince 2019-Q1
Decreased
0

MONGODB INC

302,093$126.8M1.3%$285.23+47.68%
27 qtrssince 2019-Q2
Increased
51

ASTERA LABS INC

735,341$122.3M1.3%$170.64+0.12%
4 qtrssince 2025-Q1
Increased
77

NATERA INC

521,750$119.5M1.3%$110.76+107.64%
27 qtrssince 2019-Q2
Increased
63

POPULAR INC

954,230$118.8M1.3%$70.54+78.57%
28 qtrssince 2019-Q1
Decreased
0

ALASKA AIR GROUP INC

2.3M$114.7M1.2%$48.28+3.82%
28 qtrssince 2019-Q1
Increased
59

EAGLE MATLS INC

545,349$112.7M1.2%$178.97+17.43%
28 qtrssince 2019-Q1
Decreased
0

TERADYNE INC

571,240$110.6M1.2%$116.93+68.13%
5 qtrssince 2024-Q4
Decreased
0

KNIGHT-SWIFT TRANSN HLDGS IN

2M$102.2M1.1%$49.91+5.38%
28 qtrssince 2019-Q1
Increased
76

DARLING INGREDIENTS INC

2.7M$97.9M1.0%$38.42-4.92%
11 qtrssince 2023-Q2
Decreased
0

XPO INC

720,353$97.9M1.0%$52.77+160.93%
19 qtrssince 2021-Q2
Decreased
0

SANMINA CORP

638,741$95.9M1.0%$69.32+119.32%
9 qtrssince 2023-Q4
Decreased
0

CIRCLE INTERNET GROUP INC

1.1M$89.6M1.0%$79.890.00%
1 qtr
New
58

ULTRA CLEAN HLDGS INC

3.5M$88.9M0.9%$30.76-16.23%
13 qtrssince 2022-Q4
Increased
48

UNITED THERAPEUTICS CORP DEL

181,177$88.3M0.9%$337.12+47.18%
24 qtrssince 2020-Q1
Increased
44

ENTEGRIS INC

1M$88.3M0.9%$91.37-5.20%
6 qtrssince 2024-Q3
Decreased
0

MKS INC.

550,735$88M0.9%$104.22+55.27%
28 qtrssince 2019-Q1
Decreased
0
Showing 20 of 295 results.275 more with Pro.PROUpgrade to see all →

Accumulation Streaks

Positions with 2+ consecutive quarters of increases - persistent directional conviction.

Security
6Q
PSTGEVERPURE INC
Q4 2024 Q1 2026+445,655 shares+$30.7M
5Q
FIPFTAI INFRASTRUCTURE INC
Q1 2025 Q1 2026+7.2M shares+$34.5M
5Q
HQYHEALTHEQUITY INC
Q1 2025 Q1 2026+148,640 shares+$11.9M

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Data sourced from SEC EDGAR 13F filings. Not financial advice. Full disclaimer

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