MAIN STREET CAPITAL CORP (MAIN) Institutional Shareholders
MAIN STREET CAPITAL CORP (MAIN) is currently reported in institutional portfolios tracked by InsiderSet based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026. The institutional investors covered on this page collectively reported approximately $1.19B in MAIN holdings during the latest filing period.
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 $190.62M, representing an estimated gain of +9.93% 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
392
Total Reported Value
$1.19B
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 | $190,622,718 | +$17,212,718 | +9.93% | |
| Van Eck Associates Corp | 0.06% | 1,885,274 | $97,808,015 | $107,517,176 | +$9,709,161 | +9.93% | |
| Ubs Group Ag | 0.01% | 1,387,731 | $71,995,485 | $79,142,299 | +$7,146,814 | +9.93% | |
| Legal & General Group Plc | 0.01% | 835,057 | $43,322,757 | $47,623,301 | +$4,300,544 | +9.93% | |
| Morgan Stanley | 0.00% | 786,284 | $40,792,423 | $44,841,777 | +$4,049,354 | +9.93% | |
| Qube Research & Technologies Ltd | 0.04% | 654,166 | $33,938,132 | $37,307,087 | +$3,368,955 | +9.93% | |
| Invesco Ltd. | 0.00% | 553,967 | $28,739,808 | $31,592,738 | +$2,852,930 | +9.93% | |
| Adell Harriman & Carpenter Inc | 1.33% | 498,998 | $25,888,048 | $28,457,856 | +$2,569,808 | +9.93% | |
| Muzinich & Co., Inc. | 8.79% | 495,923 | $25,728,498 | $28,282,489 | +$2,553,991 | +9.93% | |
| Union Bancaire Privee, Ubp Sa | 0.27% | 2,942 | $24,271,801 | $167,782 | -$24,104,019 | -99.31% | |
| Vestor Capital, Llc | 1.50% | 55,208 | $23,923,000 | $3,148,512 | -$20,774,488 | -86.84% | |
| Blackrock, Inc. | 0.00% | 403,623 | $20,939,967 | $23,018,620 | +$2,078,653 | +9.93% | |
| Sumitomo Mitsui Trust Group, Inc. | 0.01% | 375,509 | $19,481,407 | $21,415,278 | +$1,933,871 | +9.93% | |
| D. E. Shaw & Co., Inc. | 0.01% | 375,318 | $19,471,498 | $21,404,386 | +$1,932,888 | +9.93% | |
| Lpl Financial Llc | 0.00% | 347,600 | $18,033,482 | $19,823,628 | +$1,790,146 | +9.93% | |
| Goldman Sachs Group Inc | 0.00% | 332,291 | $17,239,257 | $18,950,556 | +$1,711,299 | +9.93% | |
| Public Employees Retirement Association Of Colorado | 0.05% | 281,397 | $14,599,000 | $16,048,071 | +$1,449,071 | +9.93% | |
| Childress Capital Advisors, Llc | 2.19% | 257,733 | $13,371,188 | $14,698,513 | +$1,327,325 | +9.93% | |
| Raymond James Financial Inc | 0.00% | 238,617 | $12,379,450 | $13,608,328 | +$1,228,878 | +9.93% | |
| Trinity Legacy Partners, Llc | 2.42% | 217,844 | $12,099,069 | $12,423,643 | +$324,574 | +2.68% | |
| Sanders Morris Harris Llc | 6.00% | 199,559 | $10,353,133 | $11,380,850 | +$1,027,717 | +9.93% | |
| Royal Bank Of Canada | 0.00% | 174,795 | $9,069,000 | $9,968,559 | +$899,559 | +9.92% | |
| Private Advisor Group, Llc | 0.04% | 162,463 | $8,428,611 | $9,265,265 | +$836,654 | +9.93% | |
| Osaic Holdings, Inc. | 0.01% | 162,228 | $8,417,024 | $9,251,863 | +$834,839 | +9.92% | |
| Arax Advisory Partners | 0.05% | 151,274 | $7,848,113 | $8,627,156 | +$779,043 | +9.93% | |
| Benjamin Edwards Inc | 0.07% | 145,655 | $7,556,388 | $8,306,705 | +$750,317 | +9.93% | |
| Tectonic Advisors Llc | 0.36% | 145,445 | $7,545,668 | $8,294,728 | +$749,060 | +9.93% | |
| U.S. Capital Wealth Advisors, Llc | 0.19% | 139,128 | $7,368,208 | $7,934,470 | +$566,262 | +7.69% | |
| Jpmorgan Chase & Co | 0.00% | 141,880 | $7,315,396 | $8,091,416 | +$776,020 | +10.61% | |
| Millennium Management Llc | 0.00% | 134,503 | $6,978,016 | $7,670,706 | +$692,690 | +9.93% | |
| Wells Fargo & Company/Mn | 0.00% | 133,473 | $6,924,548 | $7,611,965 | +$687,417 | +9.93% | |
| Balyasny Asset Management L.P. | 0.01% | 133,125 | $6,906,525 | $7,592,119 | +$685,594 | +9.93% | |
| Tctc Holdings, Llc | 0.18% | 132,691 | $6,884,009 | $7,567,368 | +$683,359 | +9.93% | |
| State Street Corp | 0.00% | 130,435 | $6,766,968 | $7,438,708 | +$671,740 | +9.93% | |
| Ameriprise Financial Inc | 0.00% | 129,241 | $6,706,708 | $7,370,614 | +$663,906 | +9.90% | |
| Joel Isaacson & Co., Llc | 0.19% | 129,206 | $6,703,192 | $7,368,618 | +$665,426 | +9.93% | |
| Hourglass Capital, Llc | 1.24% | 121,650 | $6,311,202 | $6,937,700 | +$626,498 | +9.93% | |
| Bank Of America Corp | 0.00% | 117,462 | $6,093,928 | $6,698,858 | +$604,930 | +9.93% | |
| Segment Wealth Management, Llc | 0.31% | 114,748 | $5,953,118 | $6,544,078 | +$590,960 | +9.93% | |
| Hamilton Point Investment Advisors, Llc | 0.83% | 113,705 | $5,899,038 | $6,484,596 | +$585,558 | +9.93% | |
| Canada Life Assurance Co | 0.01% | 113,433 | $5,876,000 | $6,469,084 | +$593,084 | +10.09% | |
| Tudor Investment Corp Et Al | 0.02% | 111,577 | $5,788,615 | $6,363,236 | +$574,621 | +9.93% | |
| Beacon Pointe Advisors, Llc | 0.03% | 109,186 | $5,664,571 | $6,226,878 | +$562,307 | +9.93% | |
| Meridian Wealth Management, Llc | 0.17% | 108,809 | $5,645,011 | $6,205,377 | +$560,366 | +9.93% | |
| Jane Street Group, Llc | 0.00% | 105,352 | $5,465,662 | $6,008,225 | +$542,563 | +9.93% | |
| Naviter Wealth, Llc | 0.48% | 100,862 | $5,232,732 | $5,752,160 | +$519,428 | +9.93% | |
| J.W. Cole Advisors, Inc. | 0.09% | 100,593 | $5,218,782 | $5,736,819 | +$518,037 | +9.93% | |
| Bnp Paribas Financial Markets | 0.00% | 100,030 | $5,189,556 | $5,704,711 | +$515,155 | +9.93% | |
| Cetera Investment Advisers | 0.00% | 97,026 | $5,033,734 | $5,533,393 | +$499,659 | +9.93% | |
| Denali Advisors Llc | 0.50% | 95,591 | $4,959,240 | $5,451,555 | +$492,315 | +9.93% |
Frequently asked questions about MAIN
Who owns the most MAIN stock?
The largest holders of MAIN are typically major institutional investors such as asset managers and hedge funds reporting on Form 13F. The table above ranks tracked superinvestors by reported position size using the latest available filings for MAIN STREET CAPITAL CORP (MAIN).
Is MAIN widely held by superinvestors?
Many widely followed stocks like MAIN appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly MAIN is represented among the institutional managers we track.
What do “Current Estimated Value”, “Gain/loss Since Filing”, and “Estimated Portfolio Performance” mean?
Current Estimated Value is reported share quantity from the latest 13F times our most recent split-adjusted U.S. session close. Gain/loss Since Filing is that estimate minus the reported 13F dollar value; Estimated Portfolio Performance is that difference as a percent of the reported value. Green means the estimate is above the filing value; red means below (not purchase cost). If many filers share the same implied filing price per share, the performance % may match across rows. These are not official fund marks or live quotes.