MAIN Institutional Ownership & Shareholders
MAIN STREET CAPITAL CORP (MAIN) is currently held by 388 institutional investors tracked by InsiderSet, with a combined reported market value of approximately $1.18B based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026.
Price T Rowe Associates Inc is currently the largest disclosed institutional shareholder of MAIN tracked by InsiderSet, reporting ownership valued at approximately $173.41M in its June 30, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $184.71M, representing an estimated gain of +6.51% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 48% of the total disclosed MAIN value among the investors covered in this analysis. Major shareholders include Price T Rowe Associates Inc, Van Eck Associates Corp, Ubs Group Ag, and several other long-term asset managers with concentrated positions in MAIN STREET CAPITAL CORP (MAIN).
This page ranks the largest institutional MAIN shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
388
Total Reported Value
$1.18B
Largest Holder
Price T Rowe Associates Inc
Largest Position
$173.41M
Insider Transactions (90d)
50
Latest Filing Quarter
Q2 2026
New Institutional Positions
37
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Price T Rowe Associates Inc | 0.02% | 3,342,499 | $173,410,000 | $184,706,495 | +$11,296,495 | +6.51% | |
| Van Eck Associates Corp | 0.06% | 1,885,274 | $97,808,015 | $104,180,241 | +$6,372,226 | +6.52% | |
| Ubs Group Ag | 0.01% | 1,387,731 | $71,995,485 | $76,686,015 | +$4,690,530 | +6.52% | |
| Legal & General Group Plc | 0.01% | 835,057 | $43,322,757 | $46,145,250 | +$2,822,493 | +6.52% | |
| Morgan Stanley | 0.00% | 786,284 | $40,792,423 | $43,450,054 | +$2,657,631 | +6.52% | |
| Qube Research & Technologies Ltd | 0.04% | 654,166 | $33,938,132 | $36,149,213 | +$2,211,081 | +6.52% | |
| Invesco Ltd. | 0.00% | 553,967 | $28,739,808 | $30,612,216 | +$1,872,408 | +6.52% | |
| Adell Harriman & Carpenter Inc | 1.39% | 514,483 | $28,322,297 | $28,430,331 | +$108,034 | +0.38% | |
| Muzinich & Co., Inc. | 9.30% | 509,217 | $28,032,410 | $28,139,331 | +$106,921 | +0.38% | |
| Union Bancaire Privee, Ubp Sa | 0.27% | 2,942 | $24,271,801 | $162,575 | -$24,109,226 | -99.33% | |
| Vestor Capital, Llc | 1.50% | 55,208 | $23,923,000 | $3,050,794 | -$20,872,206 | -87.25% | |
| Blackrock, Inc. | 0.00% | 403,623 | $20,939,967 | $22,304,207 | +$1,364,240 | +6.52% | |
| Sumitomo Mitsui Trust Group, Inc. | 0.01% | 366,608 | $20,181,770 | $20,258,758 | +$76,988 | +0.38% | |
| D. E. Shaw & Co., Inc. | 0.01% | 375,318 | $19,471,498 | $20,740,073 | +$1,268,575 | +6.52% | |
| Lpl Financial Llc | 0.00% | 347,600 | $18,033,482 | $19,208,376 | +$1,174,894 | +6.52% | |
| Goldman Sachs Group Inc | 0.00% | 332,291 | $17,239,257 | $18,362,401 | +$1,123,144 | +6.52% | |
| Public Employees Retirement Association Of Colorado | 0.05% | 281,397 | $14,599,000 | $15,549,998 | +$950,998 | +6.51% | |
| Raymond James Financial Inc | 0.00% | 238,617 | $12,379,450 | $13,185,975 | +$806,525 | +6.52% | |
| Trinity Legacy Partners, Llc | 2.42% | 217,844 | $12,099,069 | $12,038,059 | -$61,010 | -0.50% | |
| Childress Capital Advisors, Llc | 1.85% | 216,587 | $11,923,114 | $11,968,598 | +$45,484 | +0.38% | |
| Sanders Morris Harris Llc | 1.45% | 198,923 | $10,959,323 | $10,992,485 | +$33,162 | +0.30% | |
| Royal Bank Of Canada | 0.00% | 174,795 | $9,069,000 | $9,659,172 | +$590,172 | +6.51% | |
| Tectonic Advisors Llc | 0.41% | 159,437 | $8,776,979 | $8,810,489 | +$33,510 | +0.38% | |
| Private Advisor Group, Llc | 0.04% | 162,463 | $8,428,611 | $8,977,705 | +$549,094 | +6.51% | |
| Osaic Holdings, Inc. | 0.01% | 162,228 | $8,417,024 | $8,964,719 | +$547,695 | +6.51% | |
| Arax Advisory Partners | 0.05% | 151,274 | $7,848,113 | $8,359,401 | +$511,288 | +6.51% | |
| Benjamin Edwards Inc | 0.07% | 145,655 | $7,556,388 | $8,048,895 | +$492,507 | +6.52% | |
| U.S. Capital Wealth Advisors, Llc | 0.19% | 139,128 | $7,368,208 | $7,688,213 | +$320,005 | +4.34% | |
| Jpmorgan Chase & Co | 0.00% | 141,880 | $7,315,396 | $7,840,289 | +$524,893 | +7.18% | |
| Tctc Holdings, Llc | 0.17% | 132,691 | $7,304,640 | $7,332,505 | +$27,865 | +0.38% | |
| Millennium Management Llc | 0.00% | 134,503 | $6,978,016 | $7,432,636 | +$454,620 | +6.52% | |
| Wells Fargo & Company/Mn | 0.00% | 133,473 | $6,924,548 | $7,375,718 | +$451,170 | +6.52% | |
| Balyasny Asset Management L.P. | 0.01% | 133,125 | $6,906,525 | $7,356,488 | +$449,963 | +6.52% | |
| State Street Corp | 0.00% | 130,435 | $6,766,968 | $7,207,838 | +$440,870 | +6.52% | |
| Hourglass Capital, Llc | 1.38% | 122,050 | $6,718,853 | $6,744,483 | +$25,630 | +0.38% | |
| Ameriprise Financial Inc | 0.00% | 129,241 | $6,706,708 | $7,141,858 | +$435,150 | +6.49% | |
| Joel Isaacson & Co., Llc | 0.19% | 129,206 | $6,703,192 | $7,139,924 | +$436,732 | +6.52% | |
| Segment Wealth Management, Llc | 0.33% | 114,753 | $6,317,167 | $6,341,251 | +$24,084 | +0.38% | |
| Bank Of America Corp | 0.00% | 117,462 | $6,093,928 | $6,490,950 | +$397,022 | +6.52% | |
| Hamilton Point Investment Advisors, Llc | 0.83% | 113,705 | $5,899,038 | $6,283,338 | +$384,300 | +6.51% | |
| Canada Life Assurance Co | 0.01% | 113,433 | $5,876,000 | $6,268,308 | +$392,308 | +6.68% | |
| Tudor Investment Corp Et Al | 0.02% | 111,577 | $5,788,615 | $6,165,745 | +$377,130 | +6.52% | |
| Beacon Pointe Advisors, Llc | 0.03% | 109,186 | $5,664,571 | $6,033,618 | +$369,047 | +6.52% | |
| Meridian Wealth Management, Llc | 0.17% | 108,809 | $5,645,011 | $6,012,785 | +$367,774 | +6.52% | |
| Jane Street Group, Llc | 0.00% | 105,352 | $5,465,662 | $5,821,752 | +$356,090 | +6.52% | |
| Confluence Investment Management Llc | 0.09% | 96,050 | $5,287,552 | $5,307,723 | +$20,171 | +0.38% | |
| Naviter Wealth, Llc | 0.48% | 100,862 | $5,232,732 | $5,573,634 | +$340,902 | +6.51% | |
| J.W. Cole Advisors, Inc. | 0.09% | 100,593 | $5,218,782 | $5,558,769 | +$339,987 | +6.51% | |
| Bnp Paribas Financial Markets | 0.00% | 100,030 | $5,189,556 | $5,527,658 | +$338,102 | +6.52% | |
| Cetera Investment Advisers | 0.00% | 97,026 | $5,033,734 | $5,361,657 | +$327,923 | +6.51% |
Frequently asked questions about MAIN
Who are the largest institutional holders of MAIN?
The largest institutional holders of MAIN reported in the latest SEC Form 13F filings include Price T Rowe Associates Inc, Van Eck Associates Corp, Ubs Group Ag, Legal & General Group Plc, and Morgan Stanley. InsiderSet ranks institutional holders by their latest reported MAIN position.
What is MAIN institutional ownership?
This page tracks MAIN positions reported by institutional investment managers through SEC Form 13F. MAIN STREET CAPITAL CORP (MAIN) institutional ownership on InsiderSet reflects disclosed 13F holdings among the managers we analyze, not every shareholder of the stock.
How many institutions own MAIN?
InsiderSet currently tracks 388 institutional managers reporting MAIN holdings in the latest available 13F data. This count reflects institutions included in the SEC Form 13F filings analyzed by InsiderSet and should not be interpreted as the total number of MAIN shareholders.
How much MAIN stock do institutions own?
Institutional investment managers disclosed approximately $1.18B in MAIN holdings for Q2 2026. This figure is reported 13F value as of the filing period, not necessarily today's market value.
When was MAIN institutional ownership last updated?
The latest MAIN institutional ownership data on InsiderSet is based on SEC Form 13F filings for the quarter ended June 30, 2026. Form 13F filings are generally reported after the quarter ends, so the holdings shown represent the latest publicly disclosed positions rather than real-time institutional holdings.
Are institutional MAIN holdings real-time?
No. Form 13F data is not real-time. It represents positions reported by institutional investment managers as of the end of the reporting quarter. An institution may have changed its MAIN position after the reporting date.
Are institutions buying or selling MAIN?
Institutional buying and selling can be analyzed by comparing MAIN positions across consecutive 13F reporting periods. InsiderSet's MAIN Ownership Changes page shows institutions that increased, reduced, initiated, or exited positions based on reported 13F holdings. View MAIN ownership changes.
How has MAIN institutional ownership changed over time?
InsiderSet tracks MAIN institutional holdings across multiple 13F reporting periods, allowing investors to compare institutional holder counts, reported value, and reported shares over time.