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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, Q4 2025

Institutional positions in Main Street Capital CORP as of Dec 31, 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
431
+31 vs. Q3 2025
Shares held
20.9M
+858.1K (+4.3%) vs. Q3 2025
Total value
$1.26B
−$5.41M (−0.4%) vs. Q3 2025
New holders
68
145 more added
Sold out
37
120 more reduced

8 institutions that held it in Q3 2025 haven't filed for Q4 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q3 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 holdersQ4 2025: 431 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 heldQ4 2025: $1.26B
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, Q4 2025

Shares, value and share of portfolio for each institution holding Main Street Capital CORP; share changes are against Q3 2025.

Institutions holding MAIN in Q4 2025
InstitutionSharesValue% of portfolioChange in sharesAction
Wealth Enhancement Advisory Services, LLC31,360$1.95M0.00%−15,829−33.5%Reduced
Sharpepoint LLC30,961$1.87M1.12%+2,358+8.2%Added
Engineers Gate Manager LP30,631$1.85M0.02%+6,593+27.4%Added
Dearborn Partners LLC29,372$1.77M0.09%−1,980−6.3%Reduced
Squarepoint Ops LLC29,053$1.75M0.00%+25,823+799.5%Added
Universal- Beteiligungs- und Servicegesellschaft mbH28,733$1.74M0.00%+252+0.9%Added
TCG Advisory Services, LLC28,498$1.72M0.05%+8,285+41.0%Added
National Asset Management, Inc.27,859$1.68M0.08%+417+1.5%Added
Aquatic Capital Management LLC27,779$1.68M0.05%+27,779New
Legacy Capital Wealth Partners, LLC27,586$1.67M0.36%+1,938+7.6%Added
Bokf, NA25,000$1.51M0.02%00.0%Unchanged
Widmann Financial Services, Inc.24,350$1.47M0.90%−211−0.9%Reduced
Great West Life Assurance Co23,744$1.44M0.00%+947+4.2%Added
Castleview Partners, LLC23,680$1.43M0.71%+23,680New
WealthPLAN Partners, LLC23,051$1.39M0.21%+743+3.3%Added
Manufacturers Life Insurance Company, The22,423$1.35M0.00%+1,041+4.9%Added
Massar Capital Management, LP21,364$1.29M0.25%+21,364New
Eagle Global Advisors LLC21,275$1.28M0.05%+9,760+84.8%Added
Credit Agricole S A20,933$1.26M0.00%00.0%Unchanged
Generali Investments CEE, investicni spolecnost, a.s.20,785$1.26M0.09%00.0%Unchanged
Cerity Partners LLC20,636$1.25M0.00%+2,371+13.0%Added
Simon Quick Advisors, LLC20,550$1.24M0.05%+20+0.1%Added
Arete Wealth Advisors, LLC20,430$1.23M0.09%−338−1.6%Reduced
Baird Financial Group, Inc.20,132$1.22M0.00%−1,512−7.0%Reduced
Natixis19,425$1.17M0.00%−17,091−46.8%Reduced
Mackenzie Financial Corp19,518$1.17M0.00%+145+0.7%Added
SS&H Financial Advisors, Inc.19,100$1.15M0.34%−100−0.5%Reduced
MML Investors Services, LLC18,994$1.15M0.00%−70.0%Reduced
SMH Capital Advisors Inc18,884$1.14M2.32%+206+1.1%Added
Trexquant Investment LP18,581$1.12M0.01%+18,581New
Toroso Investments, LLC18,444$1.11M0.00%+18,444New
Steward Partners Investment Advisory, LLC18,254$1.10M0.01%−10,409−36.3%Reduced
Savvy Advisors, Inc.18,077$1.09M0.04%+1,717+10.5%Added
Janney Montgomery Scott LLC17,917$1.08M0.00%−1,533−7.9%Reduced
Callahan Advisors, LLC17,890$1.08M0.09%−56−0.3%Reduced
Advisory Advocates, LLC17,595$1.06M1.06%+17,595New
Brasada Capital Management, LP17,000$1.05M0.18%00.0%Unchanged
Gotham Asset Management, LLC17,339$1.05M0.00%+17,339New
Ronald Blue Trust, Inc.17,288$1.04M0.01%+254+1.5%Added
Uncommon Cents Investing LLC16,977$1.03M0.25%+350+2.1%Added
Gsa Capital Partners LLP16,759$1.01M0.09%+16,759New
Chilton Capital Management LLC16,717$1.01M0.03%+1,730+11.5%Added
Sanctuary Advisors, LLC16,665$1.01M0.01%+2,026+13.8%Added
Independent Financial Group, LLC16,499$996.4K0.02%−351−2.1%Reduced
ProShare Advisors LLC16,412$991.1K0.00%−1,560−8.7%Reduced
Captrust Financial Advisors16,093$971.9K0.00%+8,507+112.1%Added
Bay Colony Advisory Group, Inc d/b/a Bay Colony Advisors15,989$965.6K0.12%−579−3.5%Reduced
Milestone Asset Management, LLC15,872$958.6K0.18%−3,565−18.3%Reduced
Delta Investment Management, LLC15,603$942.3K0.16%−26,671−63.1%Reduced
Venturi Wealth Management, LLC15,583$941.1K0.04%00.0%Unchanged
Nations Financial Group Inc,15,543$938.7K0.05%+4,252+37.7%Added
WCG Wealth Advisors LLC15,470$934.2K0.03%−795−4.9%Reduced
AE Wealth Management LLC15,433$932.1K0.01%+6,984+82.7%Added
Belpointe Asset Management LLC15,030$907.7K0.03%00.0%Unchanged
Fortis Capital Advisors, LLC15,030$907.7K0.13%00.0%Unchanged
NewEdge Wealth, LLC14,584$880.7K0.01%00.0%Unchanged
Allworth Financial LP14,171$855.8K0.00%−2,898−17.0%Reduced
Financial Security Advisor, Inc.13,994$845.1K0.16%+231+1.7%Added
MAI Capital Management13,733$829.4K0.00%−15−0.1%Reduced
Empowered Funds, LLC13,715$828.2K0.01%+1,691+14.1%Added
Mercer Global Advisors Inc13,584$820.3K0.00%+1,172+9.4%Added
Smartleaf Asset Management LLC13,319$801.6K0.03%+12,841+2,686.4%Added
Lido Advisors, LLC12,520$794.3K0.00%+209+1.7%Added
RMR Wealth Builders12,921$780.3K0.06%−254−1.9%Reduced
PFG Investments, LLC12,886$778.2K0.04%−558−4.2%Reduced
Mindset Wealth Management, LLC12,879$777.8K0.20%+359+2.9%Added
Atria Investments LLC12,820$774.2K0.01%−25−0.2%Reduced
D.B. Root & Company, LLC12,705$767.3K0.19%−26−0.2%Reduced
Tradition Wealth Management, LLC12,682$765.9K0.05%+103+0.8%Added
Stifel Financial Corp12,628$762.6K0.00%−833−6.2%Reduced
HB Wealth Management, LLC12,457$752.3K0.00%+1,386+12.5%Added
Brevan Howard Capital Management LP12,386$748.0K0.01%+12,386New
Cordoba Advisory Partners LLC12,246$739.4K0.18%+12,246New
Catalyst Capital Advisors LLC12,128$732.4K0.02%00.0%Unchanged
Guggenheim Capital LLC12,103$730.9K0.01%+597+5.2%Added
Westbourne Investment Advisors, Inc.12,100$730.7K0.20%−2,000−14.2%Reduced
Concurrent Investment Advisors, LLC11,838$714.9K0.01%−2,193−15.6%Reduced
Inscription Capital, LLC11,799$712.5K0.07%+19+0.2%Added
Virtue Capital Management, LLC11,531$712.0K0.11%+6,510+129.7%Added
Susquehanna Portfolio Strategies, LLC11,773$711.0K0.01%00.0%Unchanged
Truist Financial Corp11,576$699.1K0.00%+651+6.0%Added
Verition Fund Management LLC11,448$691.3K0.00%−19,466−63.0%Reduced
Global Retirement Partners, LLC11,281$681.3K0.01%+3,803+50.9%Added
Mutual Advisors, LLC11,169$674.5K0.01%+2,396+27.3%Added
Verity Asset Management, Inc.10,669$644.3K0.28%+1,132+11.9%Added
Newbridge Financial Services Group, Inc.10,649$643.1K0.10%+7,326+220.5%Added
Passumpsic Savings Bank10,620$641.3K0.35%+10,620New
Capital Performance Advisors LLP10,516$635.1K0.05%00.0%Unchanged
JustInvest LLC10,481$632.9K0.01%+1,387+15.3%Added
Equitable Holdings, Inc.10,387$627.3K0.00%+14+0.1%Added
Colony Group, LLC10,043$606.5K0.00%−488−4.6%Reduced
Group One Trading, L.P.9,662$583.5K0.02%+7,071+272.9%Added
BostonPremier Wealth LLC9,550$576.7K0.30%00.0%Unchanged
Signature Equity Partners, LLC9,524$575.2K0.32%+9,524New
Balboa Wealth Partners9,293$561.2K0.09%+10.0%Added
Cahill Financial Advisors Inc9,288$560.9K0.06%−457−4.7%Reduced
Harbour Investments, Inc.9,280$560.4K0.01%−1,278−12.1%Reduced
AlTi Global, Inc.9,150$552.6K0.01%00.0%Unchanged
Icon Wealth Advisors, LLC9,100$549.5K0.04%00.0%Unchanged
Perennial Investment Advisors, LLC9,094$549.2K0.04%+9,094New