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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, Q2 2026

Institutional positions in Main Street Capital CORP as of Jun 30, 2026. 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
401
−19 vs. Q1 2026
Shares held
22.7M
−496.9K (−2.1%) vs. Q1 2026
Total value
$1.18B
−$53.5M (−4.4%) vs. Q1 2026
New holders
43
148 more added
Sold out
62
122 more reduced

3 institutions that held it in Q1 2026 haven't filed for Q2 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q1 2026: 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 holdersQ2 2026: 401 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 heldQ2 2026: $1.18B
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, Q2 2026

Shares, value and share of portfolio for each institution holding Main Street Capital CORP; share changes are against Q1 2026.

Institutions holding MAIN in Q2 2026
InstitutionSharesValue% of portfolioChange in sharesAction
Legacy Capital Wealth Partners, LLC33,016$1.71M0.33%+4,264+14.8%Added
Citadel Advisors LLC31,531$1.64M0.00%+1,589+5.3%Added
Susquehanna Fundamental Investments, LLC30,698$1.59M0.03%−23,060−42.9%Reduced
Arkadios Wealth Advisors30,064$1.56M0.02%−3,683−10.9%Reduced
Universal- Beteiligungs- und Servicegesellschaft mbH29,687$1.54M0.00%+449+1.5%Added
Manufacturers Life Insurance Company, The28,924$1.50M0.00%+4,034+16.2%Added
Entropy Technologies, LP28,562$1.48M0.06%−8,527−23.0%Reduced
Wealth Enhancement Advisory Services, LLC27,657$1.46M0.00%+8,922+47.6%Added
Dearborn Partners LLC27,018$1.40M0.08%−1,814−6.3%Reduced
Sigma Planning Corp27,001$1.40M0.04%−8,491−23.9%Reduced
National Asset Management, Inc.26,913$1.39M0.08%+157+0.6%Added
Neuberger Berman Group LLC26,141$1.36M0.00%−14,719−36.0%Reduced
Quantinno Capital Management LP26,118$1.36M0.00%+7,136+37.6%Added
Bokf, NA25,000$1.30M0.02%00.0%Unchanged
Mackenzie Financial Corp24,127$1.25M0.00%+2,326+10.7%Added
Widmann Financial Services, Inc.23,862$1.24M0.66%−467−1.9%Reduced
Castleview Partners, LLC23,680$1.23M0.54%00.0%Unchanged
AQR Capital Management LLC23,028$1.19M0.00%+5,680+32.7%Added
Atom Investors LP22,891$1.19M0.11%+22,891New
Savvy Advisors, Inc.22,718$1.18M0.03%+2,368+11.6%Added
SMH Capital Advisors Inc21,907$1.14M4.45%+3,021+16.0%Added
CI Private Wealth, LLC21,892$1.14M0.00%+6,593+43.1%Added
Strategy Asset Managers LLC21,524$1.12M0.17%+30+0.1%Added
Arete Wealth Advisors, LLC21,204$1.10M0.07%−460−2.1%Reduced
MAI Capital Management21,183$1.10M0.00%+7,185+51.3%Added
Cerity Partners LLC21,057$1.09M0.00%−1,813−7.9%Reduced
Generali Investments CEE, investicni spolecnost, a.s.20,785$1.08M0.05%00.0%Unchanged
Baird Financial Group, Inc.20,764$1.08M0.00%+1,241+6.4%Added
Simon Quick Advisors, LLC20,502$1.06M0.04%−27−0.1%Reduced
WealthPLAN Partners, LLC20,327$1.05M0.20%−2,086−9.3%Reduced
Natixis20,090$1.04M0.00%+665+3.4%Added
Ronald Blue Trust, Inc.19,610$1.02M0.01%+2,447+14.3%Added
TCG Advisory Services, LLC19,580$1.02M0.02%−241−1.2%Reduced
Delta Investment Management, LLC19,566$1.02M0.17%+2,785+16.6%Added
DnB Asset Management AS19,520$1.01M0.00%−5,109−20.7%Reduced
MML Investors Services, LLC19,395$1.01M0.00%+1,554+8.7%Added
Callahan Advisors, LLC19,175$994.8K0.08%+666+3.6%Added
SS&H Financial Advisors, Inc.18,950$983.0K0.25%+18,950New
Mercer Global Advisors Inc18,798$975.3K0.00%+6,272+50.1%Added
Janney Montgomery Scott LLC18,114$940.0K0.00%+2,207+13.9%Added
Captrust Financial Advisors17,809$923.9K0.00%+108+0.6%Added
Sanctuary Advisors, LLC17,460$905.8K0.00%+120+0.7%Added
Truist Financial Corp17,379$901.6K0.00%+5,626+47.9%Added
Uncommon Cents Investing LLC17,322$898.7K0.19%−30−0.2%Reduced
Wedmont Private Capital16,928$894.5K0.02%+16,928New
Advisory Advocates, LLC17,062$885.2K0.76%+44+0.3%Added
Cordoba Advisory Partners LLC17,045$883.9K0.19%+4,463+35.5%Added
Chilton Capital Management LLC16,857$874.6K0.03%+140+0.8%Added
Steward Partners Investment Advisory, LLC16,445$853.2K0.00%−1,024−5.9%Reduced
Americana Partners, LLC16,245$842.8K0.02%+16,245New
Greenland Capital Management LP16,000$830.1K0.16%+5,200+48.1%Added
Signature Equity Partners, LLC15,945$827.2K0.38%−1,518−8.7%Reduced
ProShare Advisors LLC15,373$797.6K0.00%−1,151−7.0%Reduced
Venturi Wealth Management, LLC15,333$795.5K0.03%−250−1.6%Reduced
Belpointe Asset Management LLC15,030$779.8K0.03%−65−0.4%Reduced
Fortis Capital Advisors, LLC15,030$779.8K0.09%−65−0.4%Reduced
Stifel Financial Corp14,788$767.2K0.00%−407−2.7%Reduced
NewEdge Wealth, LLC14,584$756.6K0.01%00.0%Unchanged
HB Wealth Management, LLC14,521$753.4K0.00%+1,113+8.3%Added
Mindset Wealth Management, LLC14,125$732.8K0.14%+314+2.3%Added
WCG Wealth Advisors LLC14,095$731.2K0.02%00.0%Unchanged
Wiley Bros.-Aintree Capital, LLC14,065$729.7K0.00%+582+4.3%Added
Financial Security Advisor, Inc.14,050$728.9K0.12%+29+0.2%Added
PFG Investments, LLC13,597$705.4K0.03%+778+6.1%Added
Independent Financial Group, LLC13,294$689.7K0.01%−1,393−9.5%Reduced
Smartleaf Asset Management LLC13,361$688.9K0.02%00.0%Unchanged
JustInvest LLC13,119$680.6K0.01%+1,234+10.4%Added
Tradition Wealth Management, LLC13,036$676.3K0.04%+187+1.5%Added
Colony Group, LLC12,810$664.6K0.00%+1,957+18.0%Added
Allworth Financial LP12,685$658.1K0.00%−1,138−8.2%Reduced
Guggenheim Capital LLC12,613$654.4K0.00%+933+8.0%Added
Equitable Holdings, Inc.12,515$649.3K0.00%+30.0%Added
AlTi Global, Inc.12,457$646.3K0.01%+3,307+36.1%Added
Westbourne Investment Advisors, Inc.12,400$643.3K0.18%+300+2.5%Added
Eagle Global Advisors LLC12,300$638.1K0.02%−1,095−8.2%Reduced
Catalyst Capital Advisors LLC12,128$629.2K0.01%00.0%Unchanged
Fiduciary Group LLC12,013$623.2K0.05%+2,250+23.0%Added
RMR Wealth Builders11,948$619.9K0.04%−764−6.0%Reduced
Inscription Capital, LLC11,842$614.3K0.05%+29+0.2%Added
Triumph Capital Management11,741$609.1K0.11%+2,984+34.1%Added
Vise Technologies, Inc.11,716$607.8K0.01%+8,259+238.9%Added
D.B. Root & Company, LLC11,608$602.2K0.13%−1,080−8.5%Reduced
Krane Funds Advisors LLC10,971$569.2K0.02%+1,488+15.7%Added
Newbridge Financial Services Group, Inc.10,804$560.5K0.07%+6+0.1%Added
Capital Performance Advisors LLP10,516$545.6K0.04%00.0%Unchanged
Two Sigma Investments, LP10,300$534.4K0.00%−513,738−98.0%Reduced
Icon Wealth Advisors, LLC10,000$518.8K0.03%00.0%Unchanged
LGT Group Foundation9,958$516.6K0.01%+3,426+52.4%Added
Bartlett & Co. Wealth Management LLC9,700$503.2K0.01%00.0%Unchanged
Balboa Wealth Partners9,668$501.6K0.07%00.0%Unchanged
Kingsview Wealth Management, LLC9,546$495.3K0.01%−498−5.0%Reduced
Merit Financial Group, LLC9,368$486.0K0.00%+2,496+36.3%Added
Archer Investment Corp9,351$485.1K0.09%+20.0%Added
Mutual Advisors, LLC9,090$471.6K0.01%+57+0.6%Added
Vertex Planning Partners, LLC8,583$445.3K0.07%00.0%Unchanged
Jones Financial Companies LLLP8,563$437.1K0.00%+739+9.4%Added
Brown Advisory Inc8,253$428.2K0.00%+3,368+68.9%Added
BostonPremier Wealth LLC8,250$428.0K0.18%00.0%Unchanged
Cahill Financial Advisors Inc8,203$425.6K0.04%−725−8.1%Reduced
Maia Wealth LLC8,154$423.0K0.06%+37+0.5%Added