Mainstay Capital Management LLC
13F filer · CIK 0001127612Reported Aug 12, 2026
Net seller this quarter
13F portfolio value$1.35BU.S. long equity reported on 13F
Positions919 new · 11 closed
Net flow last quarter-$35.1MBuys minus sells
Top 10 positions weight33.5%Concentration
Holdings
13F · last 4 quarters freeScroll for earlier quarters
| Company | Value | % of portfolio | % of company | POSITION CHANGE qoq % | First reported |
|---|---|---|---|---|---|
| Q2 2026Reported Aug 12, 202691 positions | |||||
| $118M | 8.71% | Not reported | +120.4% | Q1 2026 | |
| $114M | 8.43% | Not reported | -14.3% | Q4 2025 | |
| $77.7M | 5.75% | 0.27% | -25.7% | Q4 2017 | |
| $61M | 4.51% | 0.10% | -45.8% | Q2 2018 | |
| $28.9M | 2.14% | Not reported | New | Q2 2026 | |
| $21.5M | 1.59% | Not reported | -15.1% | Q3 2025 | |
| $10.3M | 0.76% | 0.42% | +5.3% | Q1 2026 | |
| $8.6M | 0.64% | 0.00% | -35.1% | Q2 2023 | |
| $7.59M | 0.56% | 0.00% | +6.0% | Q3 2020 | |
| $5.49M | 0.41% | Not reported | -20.9% | Q4 2017 | |
| $4.42M | 0.33% | 0.00% | -5.6% | Q4 2017 | |
| $4.31M | 0.32% | 0.00% | +1.9% | Q4 2017 | |
| $4.11M | 0.30% | 0.00% | +1.8% | Q4 2017 | |
| $4M | 0.30% | 0.00% | -2.5% | Q4 2017 | |
| $3.92M | 0.29% | 0.00% | -72.8% | Q4 2017 | |
| $3.81M | 0.28% | 0.00% | +0.3% | Q4 2017 | |
| $3.59M | 0.27% | 0.00% | +2.4% | Q4 2017 | |
| $3.53M | 0.26% | 0.00% | +491.8% | Q2 2018 | |
| $3.26M | 0.24% | 0.00% | -3.6% | Q4 2017 | |
| $3.08M | 0.23% | 0.00% | +0.6% | Q4 2017 | |
| $3.07M | 0.23% | 0.00% | +1.7% | Q2 2024 | |
| $2.99M | 0.22% | 0.00% | -6.0% | Q4 2017 | |
| $2.78M | 0.21% | 0.00% | -2.3% | Q1 2026 | |
| $2.64M | 0.20% | 0.00% | +18.5% | Q4 2017 | |
| $2.59M | 0.19% | 0.00% | +0.6% | Q4 2017 | |
| $2.44M | 0.18% | 0.00% | +6.0% | Q4 2017 | |
| $2.41M | 0.18% | 0.00% | -1.8% | Q4 2017 | |
| $2.32M | 0.17% | 0.00% | New | Q2 2026 | |
| $2.19M | 0.16% | 0.00% | -3.9% | Q4 2017 | |
| $2.18M | 0.16% | 0.00% | +0.3% | Q4 2017 | |
| $2.03M | 0.15% | Not reported | +1.2% | Q3 2025 | |
| $1.98M | 0.15% | 0.00% | -4.4% | Q3 2022 | |
| $1.94M | 0.14% | 0.01% | +2.3% | Q2 2024 | |
| $1.87M | 0.14% | 0.00% | -3.8% | Q4 2017 | |
| $1.86M | 0.14% | 0.00% | +1.8% | Q4 2017 | |
| $1.85M | 0.14% | 0.00% | +1.0% | Q4 2017 | |
| $1.77M | 0.13% | 0.00% | -2.3% | Q4 2017 | |
| $1.66M | 0.12% | 0.01% | +3.0% | Q3 2024 | |
| $1.6M | 0.12% | 0.00% | -5.9% | Q4 2017 | |
| $1.5M | 0.11% | 0.00% | -3.5% | Q1 2025 | |
| $1.48M | 0.11% | 0.00% | -5.0% | Q4 2017 | |
| $1.44M | 0.11% | 0.02% | +1.1% | Q1 2026 | |
| $1.35M | 0.10% | Not reported | -5.2% | Q4 2017 | |
| $1.35M | 0.10% | 0.00% | +0.2% | Q4 2017 | |
| $1.33M | 0.10% | 0.00% | +1.1% | Q4 2017 | |
| $1.32M | 0.10% | 0.00% | -2.8% | Q4 2017 | |
| $1.27M | 0.09% | 0.00% | +0.2% | Q1 2026 | |
| $1.25M | 0.09% | 0.00% | +0.8% | Q3 2025 | |
| $1.04M | 0.08% | 0.00% | -5.3% | Q4 2017 | |
| $984K | 0.07% | 0.00% | -3.9% | Q4 2017 | |
| Q1 2026Reported May 12, 202693 positions | |||||
| $133M | 10.27% | 0.33% | +7.2% | Q4 2017 | |
| $131M | 10.13% | 0.18% | +2.5% | Q2 2018 | |
| $99.6M | 7.68% | Not reported | +9.4% | Q4 2025 | |
| $38M | 2.93% | Not reported | New | Q1 2026 | |
| $29.5M | 2.27% | Not reported | +5.9% | Q3 2025 | |
| $16.8M | 1.30% | 0.01% | +10.3% | Q4 2017 | |
| $11.8M | 0.91% | 0.40% | New | Q1 2026 | |
| $6.89M | 0.53% | 3.02% | +1425.0% | Q4 2025 | |
| $6.54M | 0.50% | 0.00% | +1.5% | Q2 2023 | |
| $6.43M | 0.50% | 0.79% | +1430.0% | Q4 2025 | |
| $6.24M | 0.48% | 0.00% | +2.4% | Q3 2020 | |
| $5.64M | 0.43% | Not reported | +0.3% | Q4 2017 | |
| $5.24M | 0.40% | 0.00% | -0.1% | Q4 2017 | |
| $4.07M | 0.31% | 0.00% | +2.5% | Q4 2017 | |
| $3.87M | 0.30% | 0.00% | +1.4% | Q4 2017 | |
| $3.41M | 0.26% | 0.00% | +0.7% | Q4 2017 | |
| $3.12M | 0.24% | 0.00% | +2.0% | Q4 2017 | |
| $3.08M | 0.24% | 0.00% | +41.4% | Q4 2017 | |
| $2.76M | 0.21% | 0.00% | +0.4% | Q4 2017 | |
| $2.71M | 0.21% | 0.00% | +0.4% | Q4 2017 | |
| $2.68M | 0.21% | 0.00% | +2.2% | Q4 2017 | |
| $2.53M | 0.19% | 0.00% | -2.3% | Q2 2024 | |
| $2.35M | 0.18% | 0.00% | -5.4% | Q4 2017 | |
| $2.26M | 0.17% | 0.00% | -0.3% | Q4 2017 | |
| $2.21M | 0.17% | 0.00% | +4.8% | Q4 2017 | |
| $2.13M | 0.16% | 0.00% | +0.3% | Q3 2022 | |
| $2.01M | 0.15% | 0.00% | +1.6% | Q4 2017 | |
| $1.99M | 0.15% | 0.00% | -3.0% | Q4 2017 | |
| $1.84M | 0.14% | 0.01% | -1.8% | Q2 2024 | |
| $1.77M | 0.14% | 0.00% | +2.0% | Q4 2017 | |
| $1.77M | 0.14% | 0.03% | New | Q1 2026 | |
| $1.75M | 0.14% | 0.00% | +1.2% | Q1 2025 | |
| $1.75M | 0.14% | 0.00% | -4.6% | Q4 2017 | |
| $1.72M | 0.13% | Not reported | +0.1% | Q3 2025 | |
| $1.64M | 0.13% | 0.00% | +1.8% | Q4 2017 | |
| $1.6M | 0.12% | 0.00% | -5.6% | Q4 2017 | |
| $1.49M | 0.11% | 0.00% | +3.5% | Q4 2017 | |
| $1.49M | 0.11% | 0.00% | -0.6% | Q4 2017 | |
| $1.45M | 0.11% | Not reported | -1.3% | Q4 2017 | |
| $1.43M | 0.11% | 0.00% | -0.7% | Q4 2017 | |
| $1.39M | 0.11% | 0.01% | -3.8% | Q3 2024 | |
| $1.38M | 0.11% | 0.00% | +0.4% | Q4 2017 | |
| $1.37M | 0.11% | 0.00% | New | Q1 2026 | |
| $1.37M | 0.11% | 0.00% | +1.8% | Q4 2017 | |
| $1.34M | 0.10% | 0.00% | New | Q1 2026 | |
| $1.33M | 0.10% | Not reported | New | Q1 2026 | |
| $1.31M | 0.10% | 0.00% | +4.6% | Q4 2017 | |
| $1.28M | 0.10% | 0.00% | -2.0% | Q3 2025 | |
| $1.27M | 0.10% | 0.01% | Not reported | Q1 2024 | |
| $1.26M | 0.10% | 0.00% | Not reported | Q4 2017 | |
| Q4 2025Reported Jan 27, 202684 positions | |||||
| $118M | 9.04% | 0.18% | +93.3% | Q2 2018 | |
| $118M | 9.00% | 0.34% | +82.5% | Q4 2017 | |
| $85.4M | 6.54% | Not reported | New | Q4 2025 | |
| $25.8M | 1.98% | Not reported | +1440.5% | Q3 2025 | |
| $14M | 1.08% | 0.01% | +14.5% | Q4 2017 | |
| $6.51M | 0.50% | 0.00% | +7.0% | Q3 2020 | |
| $6.15M | 0.47% | Not reported | +1.2% | Q4 2017 | |
| $5.16M | 0.40% | 0.00% | +1.1% | Q2 2023 | |
| $3.72M | 0.29% | 0.00% | -6.2% | Q4 2017 | |
| $3.71M | 0.28% | 0.00% | +0.7% | Q4 2017 | |
| $3.61M | 0.28% | 0.00% | +5.2% | Q4 2017 | |
| $3.59M | 0.27% | 0.00% | -4.6% | Q4 2017 | |
| $3.16M | 0.24% | 0.00% | +7.1% | Q4 2017 | |
| $2.9M | 0.22% | 0.00% | +9.9% | Q4 2017 | |
| $2.76M | 0.21% | 0.00% | +7.6% | Q4 2017 | |
| $2.69M | 0.21% | 0.00% | -8.4% | Q2 2024 | |
| $2.68M | 0.20% | 0.00% | -9.2% | Q4 2017 | |
| $2.5M | 0.19% | 0.00% | -10.3% | Q4 2017 | |
| $2.47M | 0.19% | 0.00% | +3.7% | Q4 2017 | |
| $2.41M | 0.18% | 0.00% | -6.1% | Q4 2017 | |
| $2.33M | 0.18% | 0.00% | +2.5% | Q4 2017 | |
| $2.3M | 0.18% | 0.00% | +7.2% | Q4 2017 | |
| $2.19M | 0.17% | 0.00% | +6.2% | Q1 2025 | |
| $2.11M | 0.16% | 0.01% | -5.1% | Q2 2024 | |
| $2.09M | 0.16% | 0.00% | -7.3% | Q4 2017 | |
| $2.03M | 0.16% | 0.00% | +6.5% | Q3 2022 | |
| $1.88M | 0.14% | 0.00% | +6.5% | Q4 2017 | |
| $1.84M | 0.14% | 0.00% | -9.2% | Q4 2017 | |
| $1.83M | 0.14% | Not reported | -8.8% | Q3 2025 | |
| $1.78M | 0.14% | 0.00% | +7.7% | Q4 2017 | |
| $1.7M | 0.13% | Not reported | +9.3% | Q4 2017 | |
| $1.68M | 0.13% | 0.00% | +2.0% | Q4 2017 | |
| $1.64M | 0.13% | 0.01% | Not reported | Q1 2024 | |
| $1.62M | 0.12% | 0.00% | -9.4% | Q4 2017 | |
| $1.61M | 0.12% | 0.00% | -9.5% | Q4 2017 | |
| TSTELFYTelefonica S A | $1.59M | 0.12% | Not reported | -6.4% | Q4 2023 |
| $1.52M | 0.12% | 0.00% | -7.6% | Q4 2017 | |
| $1.46M | 0.11% | 0.00% | +4.0% | Q4 2017 | |
| $1.4M | 0.11% | 0.01% | -7.1% | Q3 2024 | |
| $1.34M | 0.10% | 0.00% | -8.2% | Q3 2025 | |
| $1.34M | 0.10% | 0.00% | +11.3% | Q4 2017 | |
| $1.33M | 0.10% | 0.00% | +5.7% | Q4 2017 | |
| $1.26M | 0.10% | 0.00% | +7.4% | Q4 2017 | |
| $1.22M | 0.09% | 0.01% | -7.7% | Q4 2017 | |
| $1.21M | 0.09% | 0.00% | -7.5% | Q3 2023 | |
| $1.17M | 0.09% | 0.00% | +7.8% | Q4 2021 | |
| $1.16M | 0.09% | 0.00% | Not reported | Q4 2017 | |
| $831K | 0.06% | 0.00% | +8.1% | Q4 2017 | |
| $820K | 0.06% | 0.00% | +0.2% | Q4 2017 | |
| $773K | 0.06% | 0.00% | +13.5% | Q1 2023 | |
| Q3 2025Reported Dec 10, 202580 positions | |||||
| $54.7M | 5.48% | 0.10% | -43.4% | Q2 2018 | |
| $42.4M | 4.25% | 0.19% | +478.6% | Q4 2017 | |
| $11M | 1.10% | 0.01% | -28.6% | Q4 2017 | |
| $6.09M | 0.61% | 0.00% | -48.6% | Q3 2020 | |
| $4.72M | 0.47% | Not reported | -49.0% | Q4 2017 | |
| $4.09M | 0.41% | 0.00% | -49.7% | Q4 2017 | |
| $3.99M | 0.40% | 0.00% | -49.7% | Q2 2023 | |
| $3.72M | 0.37% | 0.00% | -46.0% | Q4 2017 | |
| $3.61M | 0.36% | 0.00% | -50.1% | Q4 2017 | |
| $3.24M | 0.32% | 0.00% | -49.2% | Q4 2017 | |
| $2.92M | 0.29% | 0.00% | -49.3% | Q4 2017 | |
| $2.75M | 0.28% | 0.00% | -48.9% | Q4 2017 | |
| $2.66M | 0.27% | 0.00% | -49.5% | Q2 2024 | |
| $2.65M | 0.27% | 0.00% | -51.0% | Q4 2017 | |
| $2.62M | 0.26% | 0.00% | -49.5% | Q4 2017 | |
| $2.59M | 0.26% | 0.00% | -46.6% | Q4 2017 | |
| $2.51M | 0.25% | 0.00% | -47.2% | Q4 2017 | |
| $2.42M | 0.24% | 0.00% | -48.4% | Q4 2017 | |
| $2.24M | 0.22% | 0.02% | -48.8% | Q2 2024 | |
| $2.16M | 0.22% | 0.01% | -50.0% | Q1 2024 | |
| TSTELFYTelefonica S A | $2.13M | 0.21% | Not reported | -46.2% | Q4 2023 |
| $2.13M | 0.21% | 0.00% | -54.9% | Q4 2017 | |
| $2.09M | 0.21% | 0.00% | -49.2% | Q4 2017 | |
| $2.08M | 0.21% | Not reported | New | Q3 2025 | |
| $2.01M | 0.20% | 0.00% | -51.0% | Q4 2017 | |
| $1.99M | 0.20% | 0.00% | -49.4% | Q4 2017 | |
| $1.92M | 0.19% | 0.00% | -49.2% | Q1 2025 | |
| $1.92M | 0.19% | 0.00% | -49.3% | Q3 2022 | |
| $1.74M | 0.17% | 0.00% | -50.6% | Q4 2017 | |
| $1.74M | 0.17% | 0.00% | -53.0% | Q4 2017 | |
| $1.73M | 0.17% | Not reported | -48.1% | Q4 2017 | |
| $1.7M | 0.17% | 0.00% | New | Q3 2025 | |
| $1.65M | 0.17% | 0.01% | -48.5% | Q3 2024 | |
| $1.62M | 0.16% | 0.01% | -50.9% | Q4 2017 | |
| $1.59M | 0.16% | 0.00% | -48.8% | Q4 2017 | |
| $1.54M | 0.15% | 0.00% | -47.2% | Q4 2017 | |
| $1.54M | 0.15% | 0.00% | -49.1% | Q4 2017 | |
| $1.48M | 0.15% | 0.00% | -49.5% | Q4 2017 | |
| $1.48M | 0.15% | 0.00% | -46.0% | Q4 2017 | |
| $1.44M | 0.14% | Not reported | New | Q3 2025 | |
| $1.34M | 0.13% | 0.00% | -50.1% | Q4 2017 | |
| $1.32M | 0.13% | 0.00% | -49.5% | Q4 2017 | |
| $1.23M | 0.12% | 0.00% | -51.0% | Q3 2023 | |
| $1.17M | 0.12% | 0.00% | -48.0% | Q4 2017 | |
| $1.11M | 0.11% | 0.00% | -86.6% | Q4 2021 | |
| $1.1M | 0.11% | 0.00% | -50.2% | Q4 2017 | |
| $746K | 0.07% | 0.00% | -50.0% | Q4 2017 | |
| $721K | 0.07% | 0.00% | -49.0% | Q1 2023 | |
| $590K | 0.06% | 0.00% | -50.0% | Q3 2023 | |
| $583K | 0.06% | 0.00% | -46.5% | Q3 2023 | |
Premium opens every quarter this fund has filed