Frontier Capital Management Portfolio holdings
Frontier Capital Management is an equity manager for institutions that focuses on small and mid-sized U.S. companies, picking stocks through its own bottom-up research. It has been in business since 1980. Affiliated Managers Group owns a majority of the firm and its employees own the rest, though Frontier runs its own business independently. Its clients include corporate and public pension plans, charities, foundations, endowments and municipalities.
Top Buys
| Rank | Stock | Value |
|---|---|---|
| 1 |
Applied Optoelectronics
AAOI
|
+$112M |
| 2 |
Insulet
PODD
|
+$75M |
| 3 |
Dynatrace
DT
|
+$63.7M |
| 4 |
Primoris Services
PRIM
|
+$61.6M |
| 5 |
Flowserve
FLS
|
+$58.6M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Astera Labs
ALAB
|
+$142M |
| 2 |
Darling Ingredients
DAR
|
+$99.2M |
| 3 |
Ultra Clean Holdings
UCTT
|
+$98.6M |
| 4 |
Monolithic Power Systems
MPWR
|
+$70.5M |
| 5 |
Apogee Therapeutics
APGE
|
+$68.5M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Industrials | 25.53% |
| 2 | Technology | 22.02% |
| 3 | Healthcare | 17.46% |
| 4 | Financials | 11.3% |
| 5 | Consumer Discretionary | 7.16% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | Held Since | |
|---|---|---|---|---|---|---|---|
1
FTAI Aviation
FTAI
$18.4B
| $320M | 2.98% |
1,183,492
+121,282
| +11% | +$30.5M |
2022 Q4
14 quarters
|
|
2
Granite Construction
GVA
$5.84B
| $177M | 1.65% |
1,118,881
-68,855
| -6% | -$9.35M |
2016 Q1
41 quarters
|
|
3
Alaska Air
ALK
$4.46B
| $177M | 1.65% |
3,384,643
+11,056
| +0.3% | +$472K |
2019 Q1
29 quarters
|
|
|
4
Applied Optoelectronics
AAOI
$5.03B
| $145M | 1.35% |
975,318
+691,172
| +243% | +$112M |
2026 Q1
1 quarter
|
|
5
Akamai
AKAM
$12.3B
| $134M | 1.25% |
1,136,573
+100,004
| +10% | +$12.5M |
2025 Q4
2 quarters
|
|
6
Ashland
ASH
$3.5B
| $132M | 1.23% |
1,999,908
+87,219
| +5% | +$5.07M |
2025 Q3
3 quarters
|
|
7
Lattice Semiconductor
LSCC
$15.2B
| $126M | 1.17% |
821,848
+216,530
| +36% | +$27.9M |
2024 Q1
9 quarters
|
|
8
Popular Inc
BPOP
$10B
| $119M | 1.11% |
725,227
-75,703
| -9% | -$11.4M |
2013 Q2
52 quarters
|
|
9
MongoDB
MDB
$26.5B
| $112M | 1.05% |
334,098
+119,782
| +56% | +$35.9M |
2019 Q2
28 quarters
|
|
10
United Therapeutics
UTHR
$26.1B
| $112M | 1.04% |
206,808
-45,894
| -18% | -$25.8M |
2020 Q1
25 quarters
|
|
11
Knight Transportation
KNX
$10.2B
| $110M | 1.02% |
1,410,955
-675,589
| -32% | -$46.8M |
2017 Q3
35 quarters
|
|
12
Eagle Materials
EXP
$6.08B
| $103M | 0.96% |
458,621
-152,033
| -25% | -$31.8M |
2013 Q2
52 quarters
|
|
13
Stride
LRN
$3.33B
| $103M | 0.96% |
1,191,710
-357,581
| -23% | -$32.9M |
2024 Q3
7 quarters
|
|
14
XPO
XPO
$21.9B
| $103M | 0.96% |
499,601
-152,472
| -23% | -$32.3M |
2021 Q2
20 quarters
|
|
15
BridgeBio Pharma
BBIO
$15.2B
| $102M | 0.95% |
1,373,057
+415,068
| +43% | +$29.1M |
2024 Q1
9 quarters
|
|
16
Liberty Energy
LBRT
$2.15B
| $97.4M | 0.91% |
3,720,666
+1,226,444
| +49% | +$36.7M |
2025 Q4
2 quarters
|
|
17
Sanmina
SANM
$7.71B
| $95.7M | 0.89% |
378,111
-259,277
| -41% | -$56.8M |
2023 Q4
10 quarters
|
|
|
18
Ultra Clean Holdings
UCTT
$2.11B
| $95.2M | 0.89% |
667,532
-1,119,919
| -63% | -$98.6M |
2022 Q4
14 quarters
|
|
19
Ultragenyx Pharmaceutical
RARE
$1.69B
| $95.1M | 0.89% |
2,847,936
+656,754
| +30% | +$16.3M |
2025 Q2
4 quarters
|
|
|
20
Insulet
PODD
$11.4B
| $94.8M | 0.88% |
622,506
+449,993
| +261% | +$75M |
2013 Q2
52 quarters
|
|
21
Modine Manufacturing
MOD
$5.24B
| $91.8M | 0.86% |
343,868
+139,829
| +69% | +$36.9M |
2013 Q2
52 quarters
|
|
|
22
Flowserve
FLS
$10.3B
| $91.5M | 0.85% |
1,233,291
+770,843
| +167% | +$58.6M |
2025 Q3
3 quarters
|
|
23
Kirby Corp
KEX
$6.76B
| $90.6M | 0.84% |
666,554
+22,225
| +3% | +$3.18M |
2013 Q2
52 quarters
|
|
24
Allegiant Air
ALGT
$2.23B
| $90M | 0.84% |
765,347
+164,132
| +27% | +$14.2M |
2025 Q3
3 quarters
|
|
25
Everpure Inc
P
$37.2B
| $88.2M | 0.82% |
1,120,040
+175,518
| +19% | +$12.9M |
2023 Q3
11 quarters
|
|
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Frontier Capital Management's Q2 2026 Portfolio in Review
As of Q2 2026, Frontier Capital Management held 324 positions worth $10.7B, up 10% from $9.7B the previous quarter. Its ten largest holdings account for 14% of the portfolio.
Frontier Capital Management withdrew a net $801M in Q2 2026, closing 24 positions and reducing 171 holdings. Its most notable exit was Marvell Technology, an estimated $53.6M position sold in full.
By sector, the portfolio is most concentrated in Industrials at 26% of assets, up from 23% a quarter earlier, followed by Technology and Healthcare.
Against the trend, Frontier Capital Management opened a new position in Dynatrace worth $71.8M.
- Frontier Capital Management's largest Q2 2026 buy was Dynatrace: 1,635,587 shares worth $71.8M.
- Frontier Capital Management added most to Applied Optoelectronics in Q2 2026, an estimated $112M increase.
- Frontier Capital Management's biggest Q2 2026 reduction was Astera Labs, cutting an estimated $142M.
- Frontier Capital Management fully exited Marvell Technology in Q2 2026, selling an estimated $53.6M.
- Frontier Capital Management's ten largest holdings make up 14% of its $10.7B portfolio in Q2 2026.
- Frontier Capital Management opened 33 new positions and closed 24 in Q2 2026.
- Frontier Capital Management's portfolio value rose 10% quarter-over-quarter to $10.7B.
Based on Frontier Capital Management's 13F filing for Q2 2026, filed 14 Aug 2026.