MAIN
Main Street Capital Corporation · Financial Services · Asset Management
Momentum inputs (comparable managers): holder breadth 0.0% · share flow -20.6% · net new positions 0.0% — formula
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q3 2025
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q2 2026 | 76 | +1 | 12.93M | $670.61M | +6 | −5 |
| Q1 2026 | 76 | -1 | 12.95M | $685.46M | +7 | −8 |
| Q4 2025 | 77 | 0 | 12.77M | $771.46M | +1 | −1 |
| Q3 2025 | 12 | 0 | 5.16M | $328.02M | +1 | −1 |
| Q2 2025 | 9 | -1 | 4.70M | $277.74M | +1 | −2 |
| Q1 2025 | 8 | +5 | 3.91M | $221.20M | +5 | — |
| Q4 2024 | 3 | -1 | 3.50M | $205.02M | — | −1 |
| Q3 2024 | 4 | +1 | 3.54M | $177.44M | +1 | — |
| Q2 2024 | 3 | — | 3.54M | $178.87M | — | — |
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | T. Rowe Price ✦ | 2.57M | -26.5% | $163.55M | 0.0% | ▼ Trim | 6 | SEC ↗ |
| 2 | T. Rowe Price ✦ | 2.57M | -26.5% | $163.55M | 0.0% | ▼ Trim | 6 | SEC ↗ |
| 3 | Morgan Stanley ✦ | 986.45K | — | $62.73M | 0.0% | n/c | 1 | SEC ↗ |
| 4 | Morgan Stanley ✦ | 986.45K | — | $62.73M | 0.0% | n/c | 1 | SEC ↗ |
| 5 | Morgan Stanley ✦ | 986.45K | — | $62.73M | 0.0% | n/c | 1 | SEC ↗ |
| 6 | Morgan Stanley ✦ | 986.45K | — | $62.73M | 0.0% | n/c | 1 | SEC ↗ |
| 7 | Morgan Stanley ✦ | 986.45K | — | $62.73M | 0.0% | n/c | 1 | SEC ↗ |
| 8 | Morgan Stanley ✦ | 986.45K | — | $62.73M | 0.0% | n/c | 1 | SEC ↗ |
| 9 | Morgan Stanley ✦ | 986.45K | — | $62.73M | 0.0% | n/c | 1 | SEC ↗ |
| 10 | JPMorgan Chase ✦ | 764.90K | — | $48.64M | 0.0% | n/c | 1 | SEC ↗ |
| 11 | JPMorgan Chase ✦ | 764.90K | — | $48.64M | 0.0% | n/c | 1 | SEC ↗ |
| 12 | JPMorgan Chase ✦ | 764.90K | — | $48.64M | 0.0% | n/c | 1 | SEC ↗ |
| 13 | JPMorgan Chase ✦ | 764.90K | — | $48.64M | 0.0% | n/c | 1 | SEC ↗ |
| 14 | JPMorgan Chase ✦ | 764.90K | — | $48.64M | 0.0% | n/c | 1 | SEC ↗ |
| 15 | JPMorgan Chase ✦ | 764.90K | — | $48.64M | 0.0% | n/c | 1 | SEC ↗ |
| 16 | JPMorgan Chase ✦ | 764.90K | — | $48.64M | 0.0% | n/c | 1 | SEC ↗ |
| 17 | JPMorgan Chase ✦ | 764.90K | — | $48.64M | 0.0% | n/c | 1 | SEC ↗ |
| 18 | Capital World Investors ✦ | 253.75K | +19.0% | $16.14M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 19 | BlackRock ✦ (passive) | 217.99K | -62.8% | $13.86M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 20 | BlackRock ✦ (passive) | 217.99K | -62.8% | $13.86M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 21 | BlackRock ✦ (passive) | 217.99K | -62.8% | $13.86M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 22 | BlackRock ✦ (passive) | 217.99K | -62.8% | $13.86M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 23 | BlackRock ✦ (passive) | 217.99K | -62.8% | $13.86M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 24 | Two Sigma Investments ✦ | 128.97K | -19.8% | $8.20M | 0.0% | ▼ Trim | 6 | SEC ↗ |
| 25 | D. E. Shaw & Co. ✦ | 102.28K | +38.3% | $6.50M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 26 | Goldman Sachs Group ✦ | 48.40K | — | $3.08M | 0.0% | n/c | 1 | SEC ↗ |
| 27 | Millennium Management ✦ | 46.20K | +219.3% | $2.94M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 28 | Citadel Advisors ✦ | 32.38K | New | $2.06M | 0.0% | New | 1 | SEC ↗ |
| 29 | Fisher Asset Management ✦ | 5.12K | +29.8% | $325,737 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 30 | Fidelity (FMR) ✦ | 17 | 0.0% | $1,081 | 0.0% | Held | 2 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value — the conviction measure. ✦ = curated manager.
New buyers
| Citadel Advisors | $2.06M | 0.0% |
Exited
| Marshall Wace | $8.67M | was 0.0% |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 423 holders, 23.07M shares, $930.43M reported. This is a different, older period than the tracked-universe figures above and the two are never mixed.
What else this security's tracked holders most often hold — shared-ownership counts, not fundamental relationships.
Open-market purchases (P)
Officer · VP, CAO & Assistant… · 2.05K sh @ 59.04 · $121,032
Officer · VP, CAO & Assistant… · 500 sh @ 59.09 · $29,545
Open-market sales (S)
Officer · 35.00K sh · $2.05M
Awards, exercises and tax withholding are never counted as buys or sales here. Methodology