Filed: 5/15/2026ACC: 0001172661-26-002082
📋 What this filing means
FRONTIER CAPITAL MANAGEMENT CO LLC filed this quarterly 13F‑HR report disclosing 291 equity positions with a total reported market value of $9.73B. This filing provides a transparent view of the manager's long equity holdings as of the quarter end.
291
Positions
$9.73B
Total AUM (reported)
214.20M
Total Shares
Allocation by class
COM$7.15B73.5%
CL A$436.95M4.5%
COM CL A$380.67M3.9%
COM NEW$336.17M3.5%
SHS$272.24M2.8%
CLASS A COM$229.97M2.4%
COMMON STOCK$215.52M2.2%
Portfolio Concentration
Top 3$561.97M5.8%
4–10$926.36M9.5%
11–25$1.44B14.8%
Rest$6.80B69.9%
Top 3 weight
5.8%
Top 10 weight
15.3%
Voting Authority Distribution
Total shares with voting rights: 214.20M
Sole
Full voting authority
127.27M
shares
% of voting shares59.4%
Shared
Joint voting authority
0.00
shares
% of voting shares0.0%
None
No voting authority
86.93M
shares
% of voting shares40.6%
Investment Discretion (by position count)
Sole291
Shared0
Other0
Dominant voting typeSole · 59.4% of voting shares
Institutional Holdings291
Rows:
FTAI AVIATION LTD
SOLEShares1.06M
TypeSH
Market value$260.24M
2.67%
Sole
643.92K
Shared
0.00
None
418.29K
DARLING INGREDIENTS INC
SOLEShares2.46M
TypeSH
Market value$151.88M
1.56%
Sole
1.31M
Shared
0.00
None
1.14M
UNITED THERAPEUTICS CORP DEL
SOLEShares252.70K
TypeSH
Market value$149.85M
1.54%
Sole
145.73K
Shared
0.00
None
106.97K
CIRCLE INTERNET GROUP INC
SOLEShares1.55M
TypeSH
Market value$147.71M
1.52%
Sole
796.98K
Shared
0.00
None
751.17K
GRANITE CONSTR INC
SOLEShares1.19M
TypeSH
Market value$142.39M
1.46%
Sole
626.49K
Shared
0.00
None
561.25K
STRIDE INC
SOLEShares1.55M
TypeSH
Market value$136.60M
1.40%
Sole
1M
Shared
0.00
None
547.02K
AMENTUM HOLDINGS INC
SOLEShares4.93M
TypeSH
Market value$128.58M
1.32%
Sole
2.73M
Shared
0.00
None
2.20M
XPO INC
SOLEShares652.07K
TypeSH
Market value$126.86M
1.30%
Sole
607.41K
Shared
0.00
None
44.67K
ALASKA AIR GROUP INC
SOLEShares3.37M
TypeSH
Market value$124.08M
1.28%
Sole
1.45M
Shared
0.00
None
1.92M
KNIGHT-SWIFT TRANSN HLDGS IN
SOLEShares2.09M
TypeSH
Market value$120.14M
1.23%
Sole
1.47M
Shared
0.00
None
616.88K
AKAMAI TECHNOLOGIES INC
SOLEShares1.04M
TypeSH
Market value$119.05M
1.22%
Sole
660.03K
Shared
0.00
None
376.54K
EAGLE MATLS INC
SOLEShares610.65K
TypeSH
Market value$115.69M
1.19%
Sole
404.79K
Shared
0.00
None
205.86K
ULTRA CLEAN HLDGS INC
SOLEShares1.79M
TypeSH
Market value$111.14M
1.14%
Sole
1M
Shared
0.00
None
784.50K
POPULAR INC
SOLEShares800.93K
TypeSH
Market value$107.46M
1.10%
Sole
545.25K
Shared
0.00
None
255.68K
ASHLAND INC
SOLEShares1.91M
TypeSH
Market value$106.36M
1.09%
Sole
959.54K
Shared
0.00
None
953.15K
ATI INC
SOLEShares694.42K
TypeSH
Market value$101.01M
1.04%
Sole
471.43K
Shared
0.00
None
222.99K
JAZZ PHARMACEUTICALS PLC
SOLEShares517.28K
TypeSH
Market value$97.79M
1.01%
Sole
203.21K
Shared
0.00
None
314.07K
TIDEWATER INC NEW
SOLEShares1.07M
TypeSH
Market value$89.63M
0.92%
Sole
569.50K
Shared
0.00
None
503.30K
APOGEE THERAPEUTICS INC
SOLEShares1.06M
TypeSH
Market value$89.60M
0.92%
Sole
398.67K
Shared
0.00
None
665.81K
ENTEGRIS INC
SOLEShares754.71K
TypeSH
Market value$88.48M
0.91%
Sole
396.07K
Shared
0.00
None
358.63K
MONOLITHIC PWR SYS INC
SOLEShares79.70K
TypeSH
Market value$87.14M
0.90%
Sole
62.91K
Shared
0.00
None
16.79K
KIRBY CORP
SOLEShares644.33K
TypeSH
Market value$85.62M
0.88%
Sole
324.19K
Shared
0.00
None
320.14K
AGREE RLTY CORP
SOLEShares1.10M
TypeSH
Market value$83.02M
0.85%
Sole
609.99K
Shared
0.00
None
491.39K
SANMINA CORP
SOLEShares637.39K
TypeSH
Market value$82.63M
0.85%
Sole
368.13K
Shared
0.00
None
269.26K
INSMED INC
SOLEShares469.56K
TypeSH
Market value$76.78M
0.79%
Sole
338.89K
Shared
0.00
None
130.67K
| Issuer | Class | Shares | Type | Value / Portfolio % | Voting — Sole | Shared | None |
|---|---|---|---|---|---|---|---|
FTAI AVIATION LTDSOLE | SHS | 1.06M | SH | $260.24M 2.67% | 643.92K | 0.00 | 418.29K |
DARLING INGREDIENTS INCSOLE | COM | 2.46M | SH | $151.88M 1.56% | 1.31M | 0.00 | 1.14M |
UNITED THERAPEUTICS CORP DELSOLE | COM | 252.70K | SH | $149.85M 1.54% | 145.73K | 0.00 | 106.97K |
CIRCLE INTERNET GROUP INCSOLE | COM CL A | 1.55M | SH | $147.71M 1.52% | 796.98K | 0.00 | 751.17K |
GRANITE CONSTR INCSOLE | COM | 1.19M | SH | $142.39M 1.46% | 626.49K | 0.00 | 561.25K |
STRIDE INCSOLE | COM | 1.55M | SH | $136.60M 1.40% | 1M | 0.00 | 547.02K |
AMENTUM HOLDINGS INCSOLE | COM | 4.93M | SH | $128.58M 1.32% | 2.73M | 0.00 | 2.20M |
XPO INCSOLE | COM | 652.07K | SH | $126.86M 1.30% | 607.41K | 0.00 | 44.67K |
ALASKA AIR GROUP INCSOLE | COM | 3.37M | SH | $124.08M 1.28% | 1.45M | 0.00 | 1.92M |
KNIGHT-SWIFT TRANSN HLDGS INSOLE | CL A | 2.09M | SH | $120.14M 1.23% | 1.47M | 0.00 | 616.88K |
AKAMAI TECHNOLOGIES INCSOLE | COM | 1.04M | SH | $119.05M 1.22% | 660.03K | 0.00 | 376.54K |
EAGLE MATLS INCSOLE | COM | 610.65K | SH | $115.69M 1.19% | 404.79K | 0.00 | 205.86K |
ULTRA CLEAN HLDGS INCSOLE | COM | 1.79M | SH | $111.14M 1.14% | 1M | 0.00 | 784.50K |
POPULAR INCSOLE | COM NEW | 800.93K | SH | $107.46M 1.10% | 545.25K | 0.00 | 255.68K |
ASHLAND INCSOLE | COM | 1.91M | SH | $106.36M 1.09% | 959.54K | 0.00 | 953.15K |
ATI INCSOLE | COM | 694.42K | SH | $101.01M 1.04% | 471.43K | 0.00 | 222.99K |
JAZZ PHARMACEUTICALS PLCSOLE | SHS USD | 517.28K | SH | $97.79M 1.01% | 203.21K | 0.00 | 314.07K |
TIDEWATER INC NEWSOLE | COM | 1.07M | SH | $89.63M 0.92% | 569.50K | 0.00 | 503.30K |
APOGEE THERAPEUTICS INCSOLE | COM | 1.06M | SH | $89.60M 0.92% | 398.67K | 0.00 | 665.81K |
ENTEGRIS INCSOLE | COM | 754.71K | SH | $88.48M 0.91% | 396.07K | 0.00 | 358.63K |
MONOLITHIC PWR SYS INCSOLE | COM | 79.70K | SH | $87.14M 0.90% | 62.91K | 0.00 | 16.79K |
KIRBY CORPSOLE | COM | 644.33K | SH | $85.62M 0.88% | 324.19K | 0.00 | 320.14K |
AGREE RLTY CORPSOLE | COM | 1.10M | SH | $83.02M 0.85% | 609.99K | 0.00 | 491.39K |
SANMINA CORPSOLE | COM | 637.39K | SH | $82.63M 0.85% | 368.13K | 0.00 | 269.26K |
INSMED INCSOLE | COM PAR $.01 | 469.56K | SH | $76.78M 0.79% | 338.89K | 0.00 | 130.67K |
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