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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, 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
WealthPLAN Partners, LLC22,308$1.42M0.21%+49+0.2%Added
CI Private Wealth, LLC22,369$1.42M0.00%+6,979+45.3%Added
Great West Life Assurance Co22,797$1.44M0.00%−64,622−73.9%Reduced
Engineers Gate Manager LP24,038$1.53M0.02%+1,657+7.4%Added
Widmann Financial Services, Inc.24,561$1.56M0.98%+175+0.7%Added
Bokf, NA25,000$1.59M0.02%00.0%Unchanged
Legacy Capital Wealth Partners, LLC25,648$1.63M0.35%−602−2.3%Reduced
National Asset Management, Inc.27,442$1.75M0.08%−1,076−3.8%Reduced
Universal- Beteiligungs- und Servicegesellschaft mbH28,481$1.81M0.00%00.0%Unchanged
Sharpepoint LLC28,603$1.82M1.64%+262+0.9%Added
Steward Partners Investment Advisory, LLC28,663$1.82M0.01%+274+1.0%Added
Verition Fund Management LLC30,914$1.97M0.01%−7,172−18.8%Reduced
Dearborn Partners LLC31,352$1.99M0.09%−2,510−7.4%Reduced
Citadel Advisors LLC32,379$2.06M0.00%+32,379New
Arkadios Wealth Advisors32,667$2.08M0.05%+76+0.2%Added
Mariner, LLC34,030$2.16M0.00%+13,914+69.2%Added
BI Asset Management Fondsmaeglerselskab A/S36,144$2.30M0.02%+35,505+5,556.3%Added
Natixis36,516$2.32M0.01%00.0%Unchanged
Coldstream Capital Management Inc37,019$2.35M0.03%+314+0.9%Added
Advisory Services Network, LLC37,028$2.35M0.03%+30.0%Added
Bank of New York Mellon Corp37,133$2.36M0.00%−192−0.5%Reduced
Focus Financial Network, Inc.37,175$2.36M0.08%+3,326+9.8%Added
Geneos Wealth Management Inc.37,712$2.40M0.06%+902+2.5%Added
Sigma Planning Corp38,116$2.42M0.07%−5,732−13.1%Reduced
Foundations Investment Advisors, LLC38,943$2.48M0.04%+1,760+4.7%Added
First Financial Bankshares Inc39,851$2.53M0.05%00.0%Unchanged
Blair William & Co41,072$2.61M0.01%−100−0.2%Reduced
Delta Investment Management, LLC42,274$2.69M0.48%+1,545+3.8%Added
King Luther Capital Management Corp42,410$2.70M0.01%00.0%Unchanged
Northern Trust Corp44,979$2.86M0.00%+10,045+28.8%Added
Wealth Enhancement Advisory Services, LLC47,189$2.91M0.00%+4,806+11.3%Added
Millennium Management LLC46,196$2.94M0.00%+31,727+219.3%Added
Prospera Financial Services Inc48,035$3.06M0.05%−1,699−3.4%Reduced
Goldman Sachs Group Inc48,395$3.08M0.00%+28,147+139.0%Added
Vestor Capital, LLC48,400$3.08M0.20%+45,795+1,758.0%Added
Capital Investment Advisors, LLC50,219$3.19M0.05%+1,888+3.9%Added
M&T Bank Corp51,350$3.27M0.01%00.0%Unchanged
Taylor Frigon Capital Management LLC51,643$3.28M1.63%+683+1.3%Added
MGB Wealth Management, LLC53,228$3.38M0.96%+3,185+6.4%Added
Quantbot Technologies LP54,172$3.44M0.09%−26,124−32.5%Reduced
Kestra Advisory Services, LLC55,171$3.51M0.02%−7,337−11.7%Reduced
Beacon Pointe Advisors, LLC55,729$3.54M0.03%+55,729New
Midwest Professional Planners, LTD.55,875$3.55M0.87%+1,103+2.0%Added
IHT Wealth Management, LLC56,406$3.59M0.09%−282−0.5%Reduced
Baker Avenue Asset Management, LP58,625$3.73M0.09%+1,759+3.1%Added
Qube Research & Technologies Ltd59,323$3.77M0.01%−104,665−63.8%Reduced
Larson Financial Group LLC59,343$3.77M0.13%+352+0.6%Added
Pembroke Management, LTD63,403$4.03M0.40%−6,541−9.4%Reduced
CoreCap Advisors, LLC64,960$4.13M0.15%+3,896+6.4%Added
CWM, LLC65,246$4.15M0.01%+32,667+100.3%Added
Balyasny Asset Management LLC65,417$4.16M0.01%+52,077+390.4%Added
Cetera Investment Advisers68,244$4.34M0.01%+16,169+31.0%Added
DnB Asset Management AS73,198$4.65M0.02%+3,523+5.1%Added
Rockefeller Capital Management L.P.74,228$4.72M0.01%+4,524+6.5%Added
Commonwealth Equity Services, LLC74,550$4.74M0.01%−43,703−37.0%Reduced
Creative Planning78,111$4.97M0.00%+2,772+3.7%Added
Texas Yale Capital Corp.80,918$5.15M0.16%−669−0.8%Reduced
Morgan Dempsey Capital Management LLC81,063$5.15M2.29%−10,454−11.4%Reduced
Naviter Wealth, LLC81,730$5.20M0.60%+5,052+6.6%Added
Bank of America Corp82,929$5.27M0.00%−6,250−7.0%Reduced
HighTower Advisors, LLC93,258$5.93M0.01%−403−0.4%Reduced
Albion Financial Group94,842$6.03M0.36%−270−0.3%Reduced
Meridian Wealth Management, LLC97,358$6.19M0.24%−2,730−2.7%Reduced
Integrated Wealth Concepts LLC98,879$6.29M0.06%+834+0.9%Added
Confluence Investment Management LLC101,634$6.46M0.09%−28,351−21.8%Reduced
D. E. Shaw & Co., Inc.102,282$6.50M0.01%+28,325+38.3%Added
J.W. Cole Advisors, Inc.102,920$6.54M0.13%+3,112+3.1%Added
Childress Capital Advisors, LLC110,760$7.04M1.29%00.0%Unchanged
First Trust Advisors LP111,569$7.09M0.01%−76,727−40.7%Reduced
Hamilton Point Investment Advisors, LLC114,975$7.31M1.14%+361+0.3%Added
Denali Advisors LLC119,697$7.61M0.86%−32,502−21.4%Reduced
Segment Wealth Management, LLC119,823$7.62M0.46%+355+0.3%Added
Wells Fargo & Company122,237$7.77M0.00%+5,426+4.6%Added
Hourglass Capital, LLC122,380$7.78M1.75%−1,266−1.0%Reduced
Ameriprise Financial Inc122,815$7.81M0.00%−2,879−2.3%Reduced
Envestnet Asset Management Inc122,960$7.82M0.00%+2,957+2.5%Added
TCTC Holdings, LLC123,791$7.87M0.23%+1,400+1.1%Added
Joel Isaacson & Co., LLC128,660$8.18M0.30%+151+0.1%Added
BNP Paribas Arbitrage, SA128,784$8.19M0.01%+20,684+19.1%Added
Two Sigma Investments, LP128,975$8.20M0.01%−31,924−19.8%Reduced
U.S. Capital Wealth Advisors, LLC138,788$8.83M0.24%−664−0.5%Reduced
Advisors Asset Management, Inc.139,082$8.84M0.15%+2,129+1.6%Added
Cambridge Investment Research Advisors, Inc.150,704$9.58M0.03%+11,525+8.3%Added
Royal Bank of Canada154,721$9.84M0.00%−27,984−15.3%Reduced
Benjamin Edwards Inc156,096$9.93M0.11%+1,704+1.1%Added
Trinity Legacy Partners, LLC191,001$10.9M2.50%+2,278+1.2%Added
Private Advisor Group, LLC172,752$11.0M0.05%+1,831+1.1%Added
Advisor Group Holdings, Inc.170,642$11.0M0.02%+13,690+8.7%Added
Sanders Morris Harris LLC203,832$13.0M1.71%−9,508−4.5%Reduced
Raymond James Financial Inc205,948$13.1M0.00%+35,465+20.8%Added
BlackRock, Inc.217,988$13.9M0.00%−367,685−62.8%Reduced
HRT Financial LP233,433$14.8M0.05%+20,002+9.4%Added
Capital World Investors253,745$16.1M0.00%+40,510+19.0%Added
Public Employees Retirement Association of Colorado280,200$17.8M0.07%+280,200New
Sound Income Strategies, LLC336,832$19.2M1.05%−8,995−2.6%Reduced
Franklin Resources Inc322,633$20.5M0.01%+15,988+5.2%Added
Sumitomo Mitsui Trust Holdings, Inc.334,542$21.3M0.01%+47,290+16.5%Added
Muzinich & Co., Inc.367,140$23.3M9.05%+50,332+15.9%Added
LPL Financial LLC382,319$24.3M0.01%+40,520+11.9%Added
JPMorgan Chase & Co382,450$24.3M0.00%+181,733+90.5%Added