FC
Frontier Capital Management Co LLC 13F Holdings & Recent Stock Buys (Q2 2026)
Frontier Capital Management Co LLCCIK: 0000351173
Diversified strategyMomentum followerQuality / disciplined sizing
Total reported value
$10.7B
Reporting period: 2026-06-30 · Number of holdings: 300
FRONTIER CAPITAL MANAGEMENT CO LLC disclosed 300 holdings in its latest 13F filing for the period ending 2026-06-30, with total reported value of $10.7B and a quarterly turnover rate of 43.7%.
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Personality snowflake
- Concentration
- 2.57
- Portfolio Stability
- 43.65
- Momentum
- 100
- Sector conviction
- 54.38
- Diversification
- 100
- Sizing Uniformity
- 90.36
Frontier Capital Management Co LLC's disclosed holdings carry a Herfindahl concentration index of 0.006 — mathematically equivalent to about 156 equally-sized positions, well below its 300 actual disclosed holdings. That gap points to a strategy built around a small core of high-conviction bets rather than broad diversification.
Position sizes are fairly uniform across the portfolio (a coefficient of variation of 0.96), suggesting a disciplined, rules-based approach to how much capital goes into each idea.
No strong tilt toward either adding to existing winners or initiating outsized new positions was observed in the latest reported quarter.
Source and citation information
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Recent moves
View source Form 13F filing on SEC.govTrim DAR
-67.7% -$108.5M
Add AAOI
+243.2% $120.5M
Trim CRCL
-35.1% -$84.8M
New buy DT
Add LSCC
+35.8% $69.6M
Sold out MRVL
Holdings Map
New buyAddUnchangedTrim
Top 10 holdings by weight
Full holdings list this quarter
Showing top 200 holdings (of 300 total)
| # | Ticker | Issuer | Asset Subclass | Weight | Weight Change | Shares Change | 4Q Trend |
|---|---|---|---|---|---|---|---|
| 1 | FTAI | FTAI Aviation Ltd. | Stock-Industrials | 2.98% | +0.31% | +11.42% | |
| 2 | GVA | Granite Construction Inc | Stock-Industrials | 1.65% | +0.19% | -5.80% | |
| 3 | ALK | Alaska Air Group Inc | Stock-Industrials | 1.65% | +0.37% | +0.33% | |
| 4 | AAOI | Applied Optoelectronics Inc | Stock-Tech | 1.35% | +1.10% | +243.25% | |
| 5 | AKAM | Akamai Technologies Inc | Stock-Tech | 1.25% | +0.03% | +9.65% | |
| 6 | ASH | Ashland Inc | Stock-Materials | 1.23% | +0.14% | +4.56% | |
| 7 | LSCC | Lattice Semiconductor CORP | Stock-Tech | 1.17% | +0.59% | +35.77% | |
| 8 | BPOP | Popular Inc | Stock-Financials | 1.11% | +0.01% | -9.45% | |
| 9 | MDB | Mongodb Inc | Stock-Tech | 1.05% | +0.51% | +55.89% | |
| 10 | UTHR | United Therapeutics CORP | Stock-Healthcare | 1.04% | -0.50% | -18.16% | |
| 11 | KNX | Knight-swift Transportation | Stock-Industrials | 1.02% | -0.21% | -32.38% | |
| 12 | EXP | Eagle Materials Inc | Stock-Materials | 0.96% | -0.23% | -24.90% | |
| 13 | LRN | Stride Inc | Stock-Consumer Staples | 0.96% | -0.44% | -23.08% | |
| 14 | XPO | Xpo Inc | Stock-Industrials | 0.96% | -0.34% | -23.38% | |
| 15 | BBIO | Bridgebio Pharma Inc | Stock-Healthcare | 0.95% | +0.22% | +43.33% | |
| 16 | LBRT | Liberty Energy Inc | Stock-Energy | 0.91% | +0.17% | +49.17% | |
| 17 | SANM | Sanmina CORP | Stock-Tech | 0.89% | +0.04% | -40.68% | |
| 18 | UCTT | Ultra Clean Holdings Inc | Stock-Other | 0.89% | -0.25% | -62.65% | |
| 19 | RARE | Ultragenyx Pharmaceutical In | Stock-Other | 0.89% | +0.42% | +29.97% | |
| 20 | PODD | Insulet CORP | Stock-Healthcare | 0.88% | +0.51% | +260.85% | |
| 21 | MOD | Modine Manufacturing Co | Stock-Consumer Disc | 0.86% | +0.41% | +68.53% | |
| 22 | FLS | Flowserve CORP | Stock-Industrials | 0.85% | +0.50% | +166.69% | |
| 23 | KEX | Kirby CORP | Stock-Industrials | 0.84% | -0.04% | +3.45% | |
| 24 | ALGT | Allegiant Travel Co | Stock-Other | 0.84% | +0.34% | +27.30% | |
| 25 | P | Everpure Inc-a | Stock-Tech | 0.82% | +0.25% | +18.58% | |
| 26 | AMTM | Amentum Holdings Inc | Stock-Industrials | 0.80% | -0.52% | -15.95% | |
| 27 | KYMR | Kymera Therapeutics Inc | Stock-Other | 0.79% | +0.14% | -2.50% | |
| 28 | INSM | Insmed Inc | Stock-Healthcare | 0.79% | — | +69.36% | |
| 29 | ATI | Ati Inc | Stock-Industrials | 0.77% | -0.27% | -39.52% | |
| 30 | RNST | Renasant CORP | Stock-Other | 0.71% | +0.08% | +4.48% | |
| 31 | ALAB | Astera Labs Inc | Stock-Tech | 0.70% | -0.08% | -77.54% | |
| 32 | RCL | Royal Caribbean Cruises Ltd. | Stock-Consumer Disc | 0.69% | +0.02% | -1.82% | |
| 33 | PVLA | Palvella Therapeutics Inc | Stock-Other | 0.68% | +0.20% | +28.02% | |
| 34 | DT | Dynatrace Inc | Stock-Tech | 0.67% | +0.67% | NEW | |
| 35 | INDI | Indie Semiconductor Inc-a | Stock-Other | 0.67% | +0.03% | -17.31% | |
| 36 | ADC | Agree Realty CORP | Stock-Real Estate | 0.67% | -0.18% | -14.38% | |
| 37 | LUNR | Intuitive Machines Inc | Stock-Other | 0.63% | -0.04% | -9.69% | |
| 38 | JAZZ | Jazz Pharmaceuticals plc | Stock-Healthcare | 0.62% | -0.39% | -46.40% | |
| 39 | SAIA | Saia Inc | Stock-Industrials | 0.59% | -0.07% | -17.00% | |
| 40 | ENTG | Entegris Inc | Stock-Tech | 0.59% | -0.32% | -53.37% | |
| 41 | FBP | First Bancorp Puerto Rico | Stock-Other | 0.59% | -0.05% | -17.15% | |
| 42 | CRCL | Circle Internet Group Inc | Stock-Financials | 0.59% | -0.93% | -35.10% | |
| 43 | HUBB | Hubbell Inc | Stock-Industrials | 0.59% | +0.46% | +378.69% | |
| 44 | AXSM | Axsome Therapeutics Inc | Stock-Healthcare | 0.58% | +0.23% | +25.22% | |
| 45 | FLEX | Flex Ltd. | Stock-Tech | 0.58% | +0.34% | +5.68% | |
| 46 | WTFC | Wintrust Financial CORP | Stock-Financials | 0.58% | -0.08% | -16.76% | |
| 47 | TDW | Tidewater Inc | Stock-Energy | 0.56% | -0.36% | -16.59% | |
| 48 | ATMU | Atmus Filtration Technologie | Stock-Consumer Disc | 0.55% | +0.12% | +56.01% | |
| 49 | JBL | Jabil Inc | Stock-Tech | 0.55% | +0.10% | -7.67% | |
| 50 | BLDR | Builders Firstsource Inc | Stock-Industrials | 0.54% | -0.19% | -24.30% |
1–50 of 200
Portfolio Performance
Performance for Q3 2026
-1.7%
Performance Last 4 Quarters
+31.7%
- Stdev
- +20.8%
- Beta
- +1.35
- Alpha
- -6.6%
- Max Drawdown
- -18%
- Annualized Perf
- +20.1%
- Batting Avg vs S&P
- +55.6%
- Sortino
- +1.7
- Stutzer
- +0.29
- Treynor
- +0.15
- Sterling
- +0.95
- Calmar
- +1.12
- Information Ratio
- +0.04
- Tracking Error
- +12.1%
- Stdev Down
- +12.1%
- Winning Months %
- +66.7%
- Losing Months %
- +33.3%
- Best 12 Months
- +52.9%
- Worst 12 Months
- -5.3%
- Efficiency Ratio
- +0.39
- Sharpe
- +0.99
- Stdev Sectors
- +9.1%
- Skewness
- -0.23
- Kurtosis
- -0.9
- Upside Potential
- +3.43
Reported value over time
Sector allocation
Sector allocation over time
Quarterly history
| Period | Holdings | Total value | Stability | Top holdings | |
|---|---|---|---|---|---|
| 2026 Q2 | 300 | $10.7B | 44 | ||
| 2026 Q1 | 291 | $9.7B | 40 | ||
| 2025 Q4 | 295 | $9.4B | 51 | ||
| 2025 Q3 | 297 | $11.2B | 57 | ||
| 2025 Q2 | 294 | $10.8B | 0 | ||
| 2025 Q1 | 283 | $9.1B | 100 | ||
| 2024 Q4 | 285 | $10.5B | 0 | ||
| 2024 Q3 | 281 | $10.6B | 0 | ||
| 2024 Q2 | 279 | $10.1B | 0 | ||
| 2024 Q1 | 269 | $10.7B | 0 | ||
| 2023 Q4 | 263 | $9.9B | 0 | ||
| 2023 Q3 | 267 | $9.1B | 0 | ||
| 2023 Q2 | 261 | $10.4B | 0 | ||
| 2023 Q1 | 257 | $9.7B | 0 | ||
| 2022 Q4 | 262 | $9.2B | 0 | ||
| 2022 Q3 | 268 | $8.5B | 0 | ||
| 2022 Q2 | 274 | $8.7B | 0 | ||
| 2022 Q1 | 267 | $11.0B | 0 | ||
| 2021 Q4 | 274 | $12.7B | 0 | ||
| 2021 Q3 | 280 | $12.7B | 0 | ||
| 2021 Q2 | 284 | $13.7B | 98 | ||
| 2021 Q1 | 276 | $13.2B | 40 | ||
| 2020 Q4 | 284 | $13.5B | 38 | ||
| 2020 Q3 | 291 | $11.5B | 33 | ||
| 2020 Q2 | 291 | $11.3B | 41 | ||
| 2020 Q1 | 275 | $8.9B | 58 | ||
| 2019 Q4 | 281 | $13.5B | 30 | ||
| 2019 Q3 | 289 | $12.8B | 38 | ||
| 2019 Q2 | 288 | $13.3B | 33 | ||
| 2019 Q1 | 296 | $14.1B | 36 | ||
| 2018 Q4 | 287 | $12.4B | 36 | ||
| 2018 Q3 | 287 | $15.5B | 30 | ||
| 2018 Q2 | 298 | $14.1B | 29 | ||
| 2018 Q1 | 311 | $13.7B | 25 | ||
| 2017 Q4 | 320 | $13.7B | 24 | ||
| 2017 Q3 | 321 | $13.9B | 22 | ||
| 2017 Q2 | 322 | $13.7B | 25 | ||
| 2017 Q1 | 324 | $13.5B | 21 | ||
| 2016 Q4 | 321 | $13.0B | 34 | ||
| 2016 Q3 | 344 | $12.5B | 27 | ||
| 2016 Q2 | 340 | $12.2B | 26 | ||
| 2016 Q1 | 342 | $12.6B | 28 | ||
| 2015 Q4 | 351 | $12.1B | 36 | ||
| 2015 Q3 | 352 | $11.9B | 33 | ||
| 2015 Q2 | 363 | $13.9B | 26 | ||
| 2015 Q1 | 363 | $13.9B | 30 | ||
| 2014 Q4 | 359 | $13.6B | 35 | ||
| 2014 Q3 | 349 | $12.4B | 26 | ||
| 2014 Q2 | 348 | $13.6B | 24 | ||
| 2014 Q1 | 348 | $13.8B | 30 | ||
| 2013 Q4 | 309 | $13.5B | 28 | ||
| 2013 Q3 | 320 | $13.0B | 29 | ||
| 2013 Q2 | 322 | $12.0B | 0 |
Holding changes this quarter
Frontier Capital Management Co LLC's most significant position changes for 2026-06-30: New buy: Dynatrace Inc (DT); Sold out: Marvell Technology Inc (MRVL); New buy: Primoris Services CORP (PRIM); New buy: Standardaero Inc (SARO); Sold out: Nuvalent Inc-a (NUVL).
Showing top 200 changes by size (of 324 total)
| # | Ticker | Issuer | Weight Change | Shares Change | Action |
|---|---|---|---|---|---|
| 1 | AAOI | Applied Optoelectronics Inc | +1.1% | +243.25% | Add |
| 2 | DT | Dynatrace Inc | +0.7% | NEW | New buy |
| 3 | LSCC | Lattice Semiconductor CORP | +0.6% | +35.77% | Add |
| 4 | MDB | Mongodb Inc | +0.5% | +55.89% | Add |
| 5 | PODD | Insulet CORP | +0.5% | +260.85% | Add |
| 6 | FLS | Flowserve CORP | +0.5% | +166.69% | Add |
| 7 | HUBB | Hubbell Inc | +0.5% | +378.69% | Add |
| 8 | SNOW | Snowflake Inc | +0.4% | +217.55% | Add |
| 9 | PRIM | Primoris Services CORP | +0.4% | NEW | New buy |
| 10 | RARE | Ultragenyx Pharmaceutical In | +0.4% | +29.97% | Add |
| 11 | MOD | Modine Manufacturing Co | +0.4% | +68.53% | Add |
| 12 | SARO | Standardaero Inc | +0.4% | NEW | New buy |
| 13 | ALK | Alaska Air Group Inc | +0.4% | +0.33% | Add |
| 14 | ✓ | Pagaya Technologies LTD Cl | +0.4% | +1067.50% | Add |
| 15 | ALGT | Allegiant Travel Co | +0.3% | +27.30% | Add |
| 16 | FLEX | Flex Ltd. | +0.3% | +5.68% | Add |
| 17 | DDOG | Datadog Inc - Class A | +0.3% | +95.04% | Add |
| 18 | IONQ | Ionq Inc | +0.3% | +6169.09% | Add |
| 19 | ACHC | Acadia Healthcare Co Inc | +0.3% | +190.81% | Add |
| 20 | ALKS | Alkermes plc | +0.3% | NEW | New buy |
| 21 | FTAI | FTAI Aviation Ltd. | +0.3% | +11.42% | Add |
| 22 | ETOR | eToro Group Ltd. | +0.3% | NEW | New buy |
| 23 | GENI | Genius Sports Limited | +0.3% | +89.88% | Add |
| 24 | TRVI | Trevi Therapeutics Inc | +0.3% | +53.98% | Add |
| 25 | VERA | Vera Therapeutics Inc | +0.3% | +134.89% | Add |
| 26 | ST | Sensata Technologies Holding plc | +0.3% | NEW | New buy |
| 27 | MANE | Veradermics Inc | +0.3% | NEW | New buy |
| 28 | UAMY | United States Antimony CORP | +0.3% | NEW | New buy |
| 29 | URGN | UroGen Pharma Ltd. | +0.3% | +14.80% | Add |
| 30 | BWIN | Baldwin Insurance Group Inc/ | +0.3% | +90.27% | Add |
| 31 | CRDO | Credo Technology Group Holding Ltd | +0.3% | +33.21% | Add |
| 32 | MOH | Molina Healthcare Inc | +0.3% | NEW | New buy |
| 33 | P | Everpure Inc-a | +0.3% | +18.58% | Add |
| 34 | APG | Api Group CORP | +0.3% | +120.16% | Add |
| 35 | HALO | Halozyme Therapeutics Inc | +0.3% | NEW | New buy |
| 36 | SXI | Standex International CORP | +0.3% | NEW | New buy |
| 37 | ZS | Zscaler Inc | +0.2% | +545.23% | Add |
| 38 | UMAC | Unusual Machines Inc /us | +0.2% | NEW | New buy |
| 39 | CLYM | Climb Bio Inc | +0.2% | NEW | New buy |
| 40 | AXSM | Axsome Therapeutics Inc | +0.2% | +25.22% | Add |
| 41 | BBIO | Bridgebio Pharma Inc | +0.2% | +43.33% | Add |
| 42 | ACVA | Acv Auctions Inc-a | +0.2% | +47.96% | Add |
| 43 | PRCH | Porch Group Inc | +0.2% | NEW | New buy |
| 44 | PVLA | Palvella Therapeutics Inc | +0.2% | +28.02% | Add |
| 45 | NBIS | Nebius Group N.V. | +0.2% | NEW | New buy |
| 46 | VRSK | Verisk Analytics Inc | +0.2% | NEW | New buy |
| 47 | GVA | Granite Construction Inc | +0.2% | -5.80% | Trim |
| 48 | OLED | Universal Display CORP | +0.2% | +230.87% | Add |
| 49 | VIK | Viking Holdings Ltd | +0.2% | NEW | New buy |
| 50 | TGTX | Tg Therapeutics Inc | +0.2% | NEW | New buy |
1–50 of 200
Filing History
FAQ
What is Frontier Capital Management Co LLC and what type of investor is it?
Frontier Capital Management Co LLC is an investment manager that files SEC Form 13F quarterly, disclosing its U.S. public equity holdings to regulators. As of the most recent reporting period (2026-06-30), the firm manages a tracked equity portfolio valued at approximately $10.7B, spread across 300 disclosed positions.
What are Frontier Capital Management Co LLC's largest equity positions?
Based on the latest 13F filing, Frontier Capital Management Co LLC's top holdings by market value are:
1. FTAI Aviation Ltd. (FTAI) — $320.2M (3.0%)
2. Granite Construction Inc (GVA) — $176.9M (1.6%)
3. Alaska Air Group Inc (ALK) — $176.7M (1.6%)
4. Applied Optoelectronics Inc (AAOI) — $144.5M (1.4%)
5. Akamai Technologies Inc (AKAM) — $134.4M (1.3%)
What changes did Frontier Capital Management Co LLC make in its most recent portfolio filing?
In the latest reported quarter, Frontier Capital Management Co LLC made 200 notable position adjustments: 28 new positions were initiated, 64 existing holdings were added to, 90 positions were partially reduced, and 18 were completely exited. The largest of these moves: New buy: Dynatrace Inc (DT); Sold out: Marvell Technology Inc (MRVL); New buy: Primoris Services CORP (PRIM); New buy: Standardaero Inc (SARO); Sold out: Nuvalent Inc-a (NUVL)
What sectors does Frontier Capital Management Co LLC focus on?
Frontier Capital Management Co LLC is concentrated in the following sectors based on its current disclosed equity portfolio:
• Industrials: 27.3%
• Information Technology: 25.8%
• Health Care: 14.8%
• Consumer Discretionary: 8.8%
• Financials: 7.1%
• Energy: 4.4%
Investment Profile
Frontier Capital Management Co LLC returned an annualized 20.1% over the trailing 36 months — underperforming the S&P 500 by 6.6 points — based on a reconstructed track record of its disclosed 13F positions, with a beta of 1.35 (more volatile than the market) and a 56% quarterly batting average against the index.
Its portfolio is broadly diversified and moderately active.
Its turnover score has risen from 0 to 44 over the past 4 quarters — a shift toward more active trading.
It has added to its AKAM position over the past two quarters (+$94.5M, now $134.4M), while trimming AMTM over the same stretch (-$81.8M, still holding $85.7M).
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Developer Access
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