FRONTIER CAPITAL MANAGEMENT CO LLCFRONTIER CAPITAL MANAGEMENT CO LLC

Institutional investor · Portfolio as of Q1 2026

SEC EDGAR SourceSEC Filings
$9.7B
AUM
291
Positions
Q1 2026
Filing
Rating · 2.5
Quarterly Portfolio Change
-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+3%Q1'26$9.7B
Activity profile
$ moved · Q1'26
New14%Increased35%Decreased41%Exited10%
Composition
Equity vs derivatives
Equity100%Puts0%Calls0%
Holding period
Avg 3.5 years
<1Q8%1-4Q19%1-2Y16%2Y+58%

FRONTIER CAPITAL MANAGEMENT CO LLC manages $9.7B across 291 positions as of Q1 2026. Top holdings: FTAI (2.7%), DAR (1.6%), UTHR (1.5%). Fund DNA: Balanced Allocator. HoldingsIntel Rating: 2.5/5.0.

Q1 2026 Summary

Active quarter - 29 new positions, 33 exits, 117 increased. Top move: LRN (INCREASED, conviction 77). Portfolio: $9.7B across 291 positions.

Top holdings by portfolio weight

Total AUM$10B
FTAI2.67%
DAR1.56%
UTHR1.54%
CRCL1.52%
GVA1.46%
LRN1.40%
AMTM1.32%
XPO1.30%
ALK1.28%
KNX1.23%
Other1.22%

Portfolio allocation by GICS sector

Sectors11
Industrials23.09%
Technology19.42%
Healthcare15.83%
Financial Services12.27%
Consumer Cyclical8.90%
Energy5.17%
Consumer Defensive5.15%
Real Estate4.50%
Basic Materials3.79%
Utilities1.13%
Other0.75%

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.

Holdings291 positions

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

FTAI AVIATION LTD

1.1M$260.2M2.7%$37.76+502.11%
14 qtrssince 2022-Q4
Decreased
0

DARLING INGREDIENTS INC

2.5M$151.9M1.6%$38.42+58.33%
12 qtrssince 2023-Q2
Decreased
0

UNITED THERAPEUTICS CORP DEL

252,702$149.8M1.5%$382.84+42.89%
25 qtrssince 2020-Q1
Increased
63

CIRCLE INTERNET GROUP INC

1.5M$147.7M1.5%$85.22-22.39%
2 qtrssince 2025-Q4
Increased
62

GRANITE CONSTR INC

1.2M$142.4M1.5%$49.00+149.90%
29 qtrssince 2019-Q1
Decreased
0

STRIDE INC

1.5M$136.6M1.4%$87.68+3.79%
7 qtrssince 2024-Q3
Increased
77

AMENTUM HOLDINGS INC

4.9M$128.6M1.3%$20.85+0.77%
5 qtrssince 2025-Q1
Decreased
0

XPO INC

652,073$126.9M1.3%$52.77+293.95%
20 qtrssince 2021-Q2
Decreased
0

ALASKA AIR GROUP INC

3.4M$124.1M1.3%$48.76+1.36%
29 qtrssince 2019-Q1
Increased
65

KNIGHT-SWIFT TRANSN HLDGS IN

2.1M$120.1M1.2%$50.65+48.44%
29 qtrssince 2019-Q1
Increased
51

AKAMAI TECHNOLOGIES INC

1M$119M1.2%$95.86+31.64%
2 qtrssince 2025-Q4
Increased
77

EAGLE MATLS INC

610,654$115.7M1.2%$182.71+14.80%
29 qtrssince 2019-Q1
Increased
53

ULTRA CLEAN HLDGS INC

1.8M$111.1M1.1%$30.76+245.45%
14 qtrssince 2022-Q4
Decreased
0

POPULAR INC

800,930$107.5M1.1%$70.54+141.80%
29 qtrssince 2019-Q1
Decreased
0

ASHLAND INC

1.9M$106.4M1.1%$56.64+17.86%
3 qtrssince 2025-Q3
Increased
61

ATI INC

694,422$101M1.0%$29.87+526.12%
29 qtrssince 2019-Q1
Decreased
0

JAZZ PHARMACEUTICALS PLC

517,284$97.8M1.0%$178.39+36.68%
16 qtrssince 2022-Q2
Increased
76

TIDEWATER INC NEW

1.1M$89.6M0.9%$66.51+10.32%
11 qtrssince 2023-Q3
Increased
47

APOGEE THERAPEUTICS INC

1.1M$89.6M0.9%$61.66+116.74%
7 qtrssince 2024-Q3
Increased
68

ENTEGRIS INC

754,706$88.5M0.9%$91.37+59.08%
7 qtrssince 2024-Q3
Decreased
0
Showing 20 of 291 results.271 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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