Main Street Capital CORP
MAIN- Exchange
- NYSE
- SEC CIK
- 0001396440
In the last 90 days, Main Street Capital CORP insiders filed 1 open-market purchase and 1 sale; 401 institutions reported holding it in 13F filings for Q2 2026, worth $1.18B in total; no superinvestor holds it.
13F holders, Q3 2025
Institutional positions in Main Street Capital CORP as of Sep 30, 2025. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 408
- +12 vs. Q2 2025
- Shares held
- 20.1M
- +408.8K (+2.1%) vs. Q2 2025
- Total value
- $1.27B
- +$109.2M (+9.4%) vs. Q2 2025
- New holders
- 44
- 154 more added
- Sold out
- 32
- 97 more reduced
9 institutions that held it in Q2 2025 haven't filed for Q3 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q2 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting MAIN on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 401 | $1.18B |
| Q1 2026 | 423 | $1.24B |
| Q4 2025 | 431 | $1.26B |
| Q3 2025 | 408 | $1.27B |
| Q2 2025 | 405 | $1.17B |
| Q1 2025 | 393 | $1.07B |
| Q4 2024 | 401 | $1.10B |
| Q3 2024 | 354 | $931.0M |
| Q2 2024 | 340 | $869.4M |
| Q1 2024 | 326 | $804.4M |
| Q4 2023 | 313 | $752.3M |
| Q3 2023 | 292 | $716.5M |
| Q2 2023 | 289 | $660.3M |
| Q1 2023 | 273 | $617.8M |
| Q4 2022 | 273 | $571.7M |
| Q3 2022 | 248 | $491.5M |
| Q2 2022 | 244 | $533.6M |
| Q1 2022 | 256 | $546.5M |
| Q4 2021 | 257 | $558.7M |
| Q3 2021 | 236 | $508.1M |
| Q2 2021 | 228 | $488.5M |
| Q1 2021 | 230 | $511.5M |
Institutions, Q3 2025
Shares, value and share of portfolio for each institution holding Main Street Capital CORP; share changes are against Q2 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Invesco Ltd. | 444,636 | $28.3M | 0.00% | −62,737−12.4% | Reduced |
| Adell Harriman & Carpenter Inc | 454,493 | $28.9M | 1.76% | −20.0% | Reduced |
| Legal & General Group Plc | 624,790 | $39.7M | 0.01% | −50,705−7.5% | Reduced |
| UBS Group AG | 866,884 | $55.1M | 0.01% | +534,374+160.7% | Added |
| Morgan Stanley | 986,447 | $62.7M | 0.00% | −25,633−2.5% | Reduced |
| Van Eck Associates Corp | 2,448,201 | $155.7M | 0.14% | +1,229,863+100.9% | Added |
| Price T Rowe Associates Inc | 2,571,881 | $163.5M | 0.02% | −928,786−26.5% | Reduced |
| Virtue Capital Management, LLC | 5,021 | – | – | +5,021 | New |
| Tectonic Advisors LLC | 0 | $0 | 0.00% | −215,481−100.0% | Sold out |
| Marshall Wace, LLP | 0 | $0 | 0.00% | −146,645−100.0% | Sold out |
| Loomis Sayles & Co L P | 0 | $0 | 0.00% | −100,000−100.0% | Sold out |
| Two Sigma Advisers, LP | 0 | $0 | 0.00% | −82,354−100.0% | Sold out |
| Cubist Systematic Strategies, LLC | 0 | $0 | 0.00% | −51,599−100.0% | Sold out |
| Trexquant Investment LP | 0 | $0 | 0.00% | −25,532−100.0% | Sold out |
| Jane Street Group, LLC | 0 | $0 | 0.00% | −19,831−100.0% | Sold out |
| Brevan Howard Capital Management LP | 0 | $0 | 0.00% | −12,580−100.0% | Sold out |
| Whittier Trust Co | 0 | $0 | 0.00% | −9,780−100.0% | Sold out |
| AXA S.A. | 0 | $0 | 0.00% | −8,470−100.0% | Sold out |
| DRW Securities, LLC | 0 | $0 | 0.00% | −6,364−100.0% | Sold out |
| NorthRock Partners, LLC | 0 | $0 | 0.00% | −5,101−100.0% | Sold out |
| Wedbush Securities Inc | 0 | $0 | 0.00% | −4,741−100.0% | Sold out |
| Bridgefront Capital, LLC | 0 | $0 | 0.00% | −4,586−100.0% | Sold out |
| Carmel Capital Partners, LLC | 0 | $0 | 0.00% | −4,170−100.0% | Sold out |
| Gsa Capital Partners LLP | 0 | $0 | 0.00% | −4,143−100.0% | Sold out |
| Simplex Trading, LLC | 0 | $0 | 0.00% | −4,047−100.0% | Sold out |
| Round Rock Advisors, LLC | 0 | $0 | 0.00% | −3,925−100.0% | Sold out |
| Jump Financial, LLC | 0 | $0 | 0.00% | −3,851−100.0% | Sold out |
| Ieq Capital, LLC | 0 | $0 | 0.00% | −3,516−100.0% | Sold out |
| BIP Wealth, LLC | 0 | $0 | 0.00% | −3,500−100.0% | Sold out |
| Secure Asset Management, LLC | 0 | $0 | 0.00% | −3,425−100.0% | Sold out |
| Point72 (DIFC) Ltd | 0 | $0 | 0.00% | −920−100.0% | Sold out |
| Thurston, Springer, Miller, Herd & Titak, Inc. | 0 | $0 | 0.00% | −500−100.0% | Sold out |
| Beacon Capital Management, LLC | 0 | $0 | 0.00% | −247−100.0% | Sold out |
| Mid-American Wealth Advisory Group, Inc. | 0 | $0 | 0.00% | −145−100.0% | Sold out |
| Cape Investment Advisory, Inc. | 0 | $0 | 0.00% | −100−100.0% | Sold out |
| Stephens Consulting, LLC | 0 | $0 | 0.00% | −68−100.0% | Sold out |
| HighMark Wealth Management LLC | 0 | $0 | 0.00% | −34−100.0% | Sold out |
| C M Bidwell & Associates Ltd | 0 | $0 | 0.00% | −11−100.0% | Sold out |
| Danske Bank A/S | 0 | $0 | 0.00% | −4−100.0% | Sold out |
| Total Investment Management Inc | 0 | $0 | 0.00% | −1−100.0% | Sold out |
| Wambolt & Associates, LLC | – | – | – | – | Not filed |
| Avantax Advisory Services, Inc. | – | – | – | – | Not filed |
| Congress Wealth Management LLC | – | – | – | – | Not filed |
| Atria Wealth Solutions, Inc. | – | – | – | – | Not filed |
| Good Life Advisors, LLC | – | – | – | – | Not filed |
| Talon Private Wealth, LLC | – | – | – | – | Not filed |
| First Horizon Advisors, Inc. | – | – | – | – | Not filed |
| Moser Wealth Advisors, LLC | – | – | – | – | Not filed |
| Safe Harbor Fiduciary, LLC | – | – | – | – | Not filed |