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Livermore
Livermore
ZHEN

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.

Institutional holdersQ3 2025: 408 institutions
Q1 2021: 230 institutionsQ2 2021: 228 institutionsQ3 2021: 236 institutionsQ4 2021: 257 institutionsQ1 2022: 256 institutionsQ2 2022: 244 institutionsQ3 2022: 248 institutionsQ4 2022: 273 institutionsQ1 2023: 273 institutionsQ2 2023: 289 institutionsQ3 2023: 292 institutionsQ4 2023: 313 institutionsQ1 2024: 326 institutionsQ2 2024: 340 institutionsQ3 2024: 354 institutionsQ4 2024: 401 institutionsQ1 2025: 393 institutionsQ2 2025: 405 institutionsQ3 2025: 408 institutionsQ4 2025: 431 institutionsQ1 2026: 423 institutionsQ2 2026: 401 institutions
Value heldQ3 2025: $1.27B
Q1 2021: $511.5MQ2 2021: $488.5MQ3 2021: $508.1MQ4 2021: $558.7MQ1 2022: $546.5MQ2 2022: $533.6MQ3 2022: $491.5MQ4 2022: $571.7MQ1 2023: $617.8MQ2 2023: $660.3MQ3 2023: $716.5MQ4 2023: $752.3MQ1 2024: $804.4MQ2 2024: $869.4MQ3 2024: $931.0MQ4 2024: $1.10BQ1 2025: $1.07BQ2 2025: $1.17BQ3 2025: $1.27BQ4 2025: $1.26BQ1 2026: $1.24BQ2 2026: $1.18B
Institutions holding MAIN and their total value by quarter
QuarterHoldersValue
Q2 2026401$1.18B
Q1 2026423$1.24B
Q4 2025431$1.26B
Q3 2025408$1.27B
Q2 2025405$1.17B
Q1 2025393$1.07B
Q4 2024401$1.10B
Q3 2024354$931.0M
Q2 2024340$869.4M
Q1 2024326$804.4M
Q4 2023313$752.3M
Q3 2023292$716.5M
Q2 2023289$660.3M
Q1 2023273$617.8M
Q4 2022273$571.7M
Q3 2022248$491.5M
Q2 2022244$533.6M
Q1 2022256$546.5M
Q4 2021257$558.7M
Q3 2021236$508.1M
Q2 2021228$488.5M
Q1 2021230$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.

Institutions holding MAIN in Q3 2025
InstitutionSharesValue% of portfolioChange in sharesAction
Susquehanna International Group, LLP7,344$467.0K0.00%+7,344New
Argent Trust Co7,169$455.9K0.02%+71+1.0%Added
Oxford Asset Management LLP7,156$455.1K0.15%+7,156New
Capital Investment Advisory Services, LLC7,091$450.9K0.04%+89+1.3%Added
Schubert & Co7,071$449.6K0.33%00.0%Unchanged
GWM Advisors LLC6,970$443.2K0.00%+1,569+29.1%Added
Virtus Investment Advisers, Inc.6,861$436.3K0.12%−1,897−21.7%Reduced
Triumph Capital Management6,720$427.3K0.12%−1,585−19.1%Reduced
United Capital Management of KS, Inc.6,719$427.3K0.06%+597+9.8%Added
LBMC Investment Advisors, LLC6,630$421.6K0.03%00.0%Unchanged
FSM Wealth Advisors, LLC6,405$407.3K0.06%+101+1.6%Added
Sound View Wealth Advisors Group, LLC6,310$401.2K0.03%+902+16.7%Added
Moors & Cabot, Inc.6,215$395.2K0.02%00.0%Unchanged
Glenview Trust Co6,100$387.9K0.01%00.0%Unchanged
Iams Wealth Management, LLC6,100$387.9K0.16%00.0%Unchanged
RDA Financial Network6,093$387.5K0.10%00.0%Unchanged
Csenge Advisory Group6,023$383.0K0.02%+6,023New
American National Bank6,000$381.5K0.04%00.0%Unchanged
VestGen Advisors, LLC5,994$381.2K0.01%+5,994New
Brighton Jones LLC5,946$378.1K0.01%+570+10.6%Added
Crestwood Advisors Group LLC5,847$371.8K0.01%00.0%Unchanged
Stratos Wealth Advisors, LLC5,606$356.5K0.02%+4+0.1%Added
Apexium Financial, LP5,435$345.6K0.02%00.0%Unchanged
Manske Wealth Management5,416$344.4K0.11%00.0%Unchanged
Core Wealth Partners LLC5,408$343.9K0.16%00.0%Unchanged
Merit Financial Group, LLC5,360$340.8K0.00%+1,320+32.7%Added
Wellington Shields Capital Management, LLC5,350$340.2K0.05%00.0%Unchanged
Kovack Advisors, Inc.5,312$337.8K0.03%+502+10.4%Added
Harbor Investment Advisory, LLC5,290$336.4K0.03%00.0%Unchanged
Freedom Financial Partners LLC5,186$329.8K0.13%+86+1.7%Added
Jones Financial Companies LLLP5,166$329.3K0.00%+1,774+52.3%Added
Dynamic Technology Lab Private Ltd5,150$327.0K0.06%+5,150New
Thrive Wealth Management, LLC5,139$326.8K0.05%−10.0%Reduced
Whitener Capital Management, Inc.5,133$326.4K0.08%−337−6.2%Reduced
Mirae Asset Global Investments Co., Ltd.5,127$326.0K0.00%+83+1.6%Added
Fisher Asset Management, LLC5,122$325.7K0.00%+1,175+29.8%Added
Brookstone Capital Management5,056$321.5K0.00%+239+5.0%Added
Plancorp, LLC5,025$319.5K0.01%00.0%Unchanged
We Are One Seven, LLC5,016$319.0K0.01%+87+1.8%Added
Intrepid Capital Management Inc5,000$317.9K0.13%00.0%Unchanged
Linscomb & Williams, Inc.5,000$317.9K0.01%00.0%Unchanged
Oak Harbor Wealth Partners, LLC5,000$317.9K0.08%00.0%Unchanged
Green Square Capital Advisors LLC5,326$314.8K0.04%00.0%Unchanged
Colonial River Wealth Management, LLC4,791$304.6K0.11%−62−1.3%Reduced
Axxcess Wealth Management, LLC4,791$304.6K0.01%−62−1.3%Reduced
Plan Group Financial, LLC4,766$303.1K0.08%+9+0.2%Added
Riverstone Advisors, LLC4,758$302.6K0.15%00.0%Unchanged
Sagespring Wealth Partners, LLC4,732$300.9K0.01%+20.0%Added
Steel Peak Wealth Management LLC4,726$300.5K0.01%+4,726New
Stephens Inc4,612$293.3K0.00%+6+0.1%Added
Vise Technologies, Inc.4,517$287.2K0.01%−3,031−40.2%Reduced
Park Avenue Securities LLC4,497$286.0K0.00%−3,973−46.9%Reduced
Koshinski Asset Management, Inc.4,340$276.0K0.02%+5+0.1%Added
Procyon Private Wealth Partners, LLC4,278$272.0K0.02%00.0%Unchanged
IFG Advisory, LLC4,273$271.7K0.01%+650+17.9%Added
Ausdal Financial Partners, Inc.4,248$270.1K0.01%+288+7.3%Added
Brown Advisory Inc4,217$268.2K0.00%00.0%Unchanged
VPR Management LLC4,124$262.2K0.12%+85+2.1%Added
CAP Partners, LLC4,081$259.5K0.15%−9−0.2%Reduced
Nabity-Jensen Investment Management Inc4,073$259.0K0.18%+62+1.5%Added
Cookson Peirce & Co Inc4,056$257.9K0.01%+4,056New
Global Assets Advisory, LLC4,048$257.4K0.08%+256+6.8%Added
US Bancorp4,009$254.9K0.00%−61−1.5%Reduced
Cullen/Frost Bankers, Inc.4,000$254.4K0.00%00.0%Unchanged
Matthew Goff Investment Advisor, LLC4,000$254.4K0.04%00.0%Unchanged
Financial Advisors Network, Inc.4,000$254.4K0.04%00.0%Unchanged
Turtle Creek Wealth Advisors, LLC4,000$254.4K0.02%00.0%Unchanged
Nelson, Van Denburg & Campbell Wealth Management Group, LLC3,921$249.3K0.01%+3,921New
Nisa Investment Advisors, LLC3,900$248.0K0.00%00.0%Unchanged
State of Alaska, Department of Revenue3,915$248.0K0.00%+3,915New
Accurate Wealth Management, LLC4,187$244.4K0.03%+305+7.9%Added
Wiley Bros.-Aintree Capital, LLC3,776$240.1K0.00%+3,776New
Wesbanco Bank Inc3,775$240.1K0.01%00.0%Unchanged
Farringdon Capital, Ltd.3,743$238.0K0.06%+3,743New
Schonfeld Strategic Advisors LLC3,710$235.9K0.00%+3,710New
Old National Bancorp3,703$235.5K0.00%+14+0.4%Added
Cornerstone Wealth Management, LLC3,654$232.4K0.01%+29+0.8%Added
Focused Wealth Management, Inc3,621$230.3K0.02%−822−18.5%Reduced
Strategic Financial Concepts, LLC3,605$229.3K0.03%+151+4.4%Added
Heritage Wealth Advisors3,600$228.9K0.01%00.0%Unchanged
GWN Securities Inc.3,588$228.2K0.05%−3,590−50.0%Reduced
Kaizen Financial Strategies3,874$221.4K0.10%+357+10.2%Added
Advisory Research Inc3,471$220.7K0.03%−80−2.3%Reduced
Sunbelt Securities, Inc.3,454$219.6K0.02%−61−1.7%Reduced
Evergreen Capital Management LLC3,453$219.6K0.01%00.0%Unchanged
MKT Advisors LLC3,427$215.4K0.08%00.0%Unchanged
Newbridge Financial Services Group, Inc.3,323$211.3K0.03%+5+0.2%Added
Colonial Trust Co3,320$211.1K0.03%00.0%Unchanged
HHM Wealth Advisors, LLC3,285$208.9K0.02%00.0%Unchanged
Coppell Advisory Solutions LLC3,290$208.4K0.02%+3,290New
Squarepoint Ops LLC3,230$205.4K0.00%−22,844−87.6%Reduced
Sequoia Financial Advisors, LLC3,160$201.0K0.00%+3,160New
Wealthfront Advisers LLC3,159$200.9K0.00%+3,159New
Comerica Bank2,968$188.7K0.00%−112−3.6%Reduced
Northwestern Mutual Wealth Management Co2,871$182.6K0.00%+2,715+1,740.4%Added
CIBC Private Wealth Group, LLC2,847$181.0K0.00%00.0%Unchanged
SOA Wealth Advisors, LLC.2,807$178.5K0.03%+33+1.2%Added
AdvisorNet Financial, Inc2,653$168.7K0.01%+409+18.2%Added
Vaughan Nelson Investment Management, L.P.2,650$168.5K0.00%00.0%Unchanged
Group One Trading, L.P.2,591$164.8K0.00%−5,771−69.0%Reduced