Skip to main content
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, Q1 2026

Institutional positions in Main Street Capital CORP as of Mar 31, 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
423
0 vs. Q4 2025
Shares held
23.4M
+2.63M (+12.7%) vs. Q4 2025
Total value
$1.24B
−$18.1M (−1.4%) vs. Q4 2025
New holders
57
170 more added
Sold out
57
107 more reduced

8 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q4 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 holdersQ1 2026: 423 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 heldQ1 2026: $1.24B
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, Q1 2026

Shares, value and share of portfolio for each institution holding Main Street Capital CORP; share changes are against Q4 2025.

Institutions holding MAIN in Q1 2026
InstitutionSharesValue% of portfolioChange in sharesAction
National Bank of Canada1,995$105.6K0.00%−95−4.5%Reduced
Vaughan Nelson Investment Management, L.P.2,025$107.2K0.00%−450−18.2%Reduced
Parallel Advisors, LLC2,176$115.2K0.00%+70+3.3%Added
Cassaday & Co Wealth Management LLC2,225$117.8K0.00%+2,225New
Signaturefd, LLC2,285$121.0K0.00%+466+25.6%Added
Central Trust Co2,400$127.1K0.00%+2,400New
Colonial Trust Co2,415$127.9K0.02%00.0%Unchanged
Register Financial Advisors LLC2,443$129.4K0.05%00.0%Unchanged
Wellington Shields & Co., LLC2,520$133.5K0.03%00.0%Unchanged
HHM Wealth Advisors, LLC2,785$147.5K0.02%−100−3.5%Reduced
Union Bancaire Privee, UBP SA2,942$152.0K0.00%−9,741−76.8%Reduced
SOA Wealth Advisors, LLC.2,881$152.6K0.03%+38+1.3%Added
Centaurus Financial, Inc.2,973$157.0K0.01%+1,301+77.8%Added
Titiun Yejiel3,000$158.9K0.16%00.0%Unchanged
Global Assets Advisory, LLC3,209$170.0K0.05%+3,209New
Sunbelt Securities, Inc.3,462$183.4K0.01%+5+0.1%Added
Heritage Wealth Advisors3,600$190.7K0.01%00.0%Unchanged
Northwestern Mutual Wealth Management Co3,699$195.9K0.00%−441−10.7%Reduced
SHP Wealth Management3,775$199.9K0.02%−2−0.1%Reduced
Wesbanco Bank Inc3,791$200.8K0.01%−502−11.7%Reduced
Farther Finance Advisors, LLC3,897$202.3K0.00%+965+32.9%Added
Cookson Peirce & Co Inc3,875$205.2K0.01%+35+0.9%Added
Ausdal Financial Partners, Inc.3,890$206.0K0.01%+482+14.1%Added
Nisa Investment Advisors, LLC3,900$206.5K0.00%00.0%Unchanged
DRW Securities, LLC3,938$208.6K0.01%+3,938New
Vise Technologies, Inc.3,457$208.8K0.00%00.0%Unchanged
Plan Group Financial, LLC3,949$209.1K0.05%+168+4.4%Added
CAP Partners, LLC3,987$211.2K0.12%−23−0.6%Reduced
Matthew Goff Investment Advisor, LLC4,000$211.8K0.04%00.0%Unchanged
Turtle Creek Wealth Advisors, LLC4,000$211.8K0.02%00.0%Unchanged
Kaizen Financial Strategies3,976$212.6K0.09%+69+1.8%Added
Keybank National Association4,100$217.1K0.00%+4,100New
Steel Peak Wealth Management LLC4,116$218.0K0.01%+4,116New
State of Alaska, Department of Revenue4,127$218.0K0.00%00.0%Unchanged
Hilton Head Capital Partners, LLC4,133$218.9K0.12%+11+0.3%Added
Argo Wealth Advisory, LLC4,182$221.5K0.13%00.0%Unchanged
United Advisor Group, LLC4,200$222.4K0.03%−1,150−21.5%Reduced
Procyon Private Wealth Partners, LLC4,233$224.2K0.01%00.0%Unchanged
Sound View Wealth Advisors Group, LLC4,297$227.5K0.02%−699−14.0%Reduced
Accurate Wealth Management, LLC4,299$228.2K0.03%+51+1.2%Added
Nabity-Jensen Investment Management Inc4,350$230.4K0.16%+132+3.1%Added
Riverstone Advisors, LLC4,408$233.4K0.12%+250+6.0%Added
Colonial River Wealth Management, LLC4,466$236.5K0.08%00.0%Unchanged
Destination Wealth Management4,494$238.0K0.01%+4,494New
Cullen/Frost Bankers, Inc.4,602$243.7K0.00%+20.0%Added
Stephens Inc4,628$245.1K0.00%+8+0.2%Added
Warren Averett Asset Management, LLC4,650$246.3K0.00%+1,108+31.3%Added
US Bancorp4,704$249.1K0.00%+16+0.3%Added
Compton Financial Group, LLC4,828$255.7K0.06%+4,828New
The PNC Financial Services Group, Inc.4,861$257.4K0.00%−723−12.9%Reduced
Brown Advisory Inc4,885$258.7K0.00%+668+15.8%Added
Mirabella Financial Services LLP4,899$259.5K0.03%+4,899New
Intrepid Capital Management Inc5,000$264.8K0.10%00.0%Unchanged
Oak Harbor Wealth Partners, LLC5,000$264.8K0.06%00.0%Unchanged
Wellington Shields Capital Management, LLC5,017$265.7K0.04%−333−6.2%Reduced
Nelson, Van Denburg & Campbell Wealth Management Group, LLC5,024$266.0K0.01%+1,103+28.1%Added
Whitener Capital Management, Inc.5,033$266.6K0.06%−127−2.5%Reduced
Plancorp, LLC5,025$266.7K0.01%00.0%Unchanged
Thrivent Financial for Lutherans5,174$274.0K0.00%+5,174New
Prime Capital Investment Advisors, LLC5,192$274.9K0.00%+5,192New
Manske Wealth Management5,200$275.4K0.08%−216−4.0%Reduced
Kovack Advisors, Inc.5,305$275.5K0.01%+4+0.1%Added
Whipplewood Advisors, LLC5,208$275.8K0.14%+5,208New
Harbor Investment Advisory, LLC5,290$280.2K0.02%00.0%Unchanged
Green Square Capital Advisors LLC5,326$282.1K0.03%00.0%Unchanged
Virtus Investment Advisers, Inc.5,380$284.9K0.08%−951−15.0%Reduced
Core Wealth Partners LLC5,408$286.4K0.13%00.0%Unchanged
Harbour Investments, Inc.5,524$292.6K0.00%−3,756−40.5%Reduced
Freedom Financial Partners LLC5,577$295.3K0.11%+221+4.1%Added
United Capital Financial Advisers, LLC5,578$295.4K0.00%−356−6.0%Reduced
SG Americas Securities, LLC5,598$296.0K0.00%+5,598New
Stratos Wealth Advisors, LLC5,635$298.5K0.02%−191−3.3%Reduced
Caitong International Asset Management Co., Ltd5,731$303.5K0.06%+5,688+13,227.9%Added
Brookstone Capital Management5,843$309.4K0.00%+362+6.6%Added
Crestwood Advisors Group LLC5,847$309.7K0.01%00.0%Unchanged
American National Bank6,000$317.8K0.03%00.0%Unchanged
United Capital Management of KS, Inc.6,064$321.1K0.05%−702−10.4%Reduced
BWM Planning, LLC6,078$321.9K0.08%+6,078New
RDA Financial Network6,093$322.7K0.08%00.0%Unchanged
Glenview Trust Co6,100$323.1K0.01%00.0%Unchanged
Iams Wealth Management, LLC6,100$323.1K0.11%00.0%Unchanged
Citigroup Inc6,101$323.1K0.00%+4,692+333.0%Added
Sequoia Financial Advisors, LLC6,142$325.3K0.00%+207+3.5%Added
Csenge Advisory Group6,186$327.6K0.02%+163+2.7%Added
Moors & Cabot, Inc.6,215$329.1K0.01%00.0%Unchanged
VPR Management LLC6,274$332.3K0.13%+98+1.6%Added
Compass Capital Management, Inc6,325$335.0K0.02%+6,325New
FSM Wealth Advisors, LLC6,502$344.4K0.04%−15−0.2%Reduced
LGT Group Foundation6,532$345.9K0.00%+6,532New
LBMC Investment Advisors, LLC6,636$351.4K0.02%00.0%Unchanged
Strategic Financial Concepts, LLC6,664$352.9K0.09%+698+11.7%Added
Integrity Alliance, LLC.6,735$356.7K0.01%+6,735New
Two Sigma Securities, LLC6,771$358.6K0.04%+2,047+43.3%Added
Merit Financial Group, LLC6,872$363.9K0.00%−1,055−13.3%Reduced
Brighton Jones LLC6,904$365.6K0.01%+6,904New
Schubert & Co7,071$374.5K0.30%00.0%Unchanged
Castle Rock Wealth Management, LLC7,149$376.2K0.08%−29−0.4%Reduced
Capital Investment Advisory Services, LLC7,295$386.3K0.03%+133+1.9%Added
Argent Trust Co7,351$389.3K0.01%+106+1.5%Added
Jones Financial Companies LLLP7,824$403.2K0.00%+4+0.1%Added