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Main Street Capital Corporation (MAIN) institutional ownership

Latest close $54.19 Jul 21, 2026
Market cap$5.7B 52-week range SectorFinancial Services
Funds holding · Q1 2026
385
reported MAIN position changes
Top owners · Q1 2026
No disclosed owners are available.
Institutional activity · Q1 2026
Net bought $154M
222 buyers · 163 sellers

Main Street Capital Corporation (MAIN) price and institutional activity

Dates

Q1 2026

$308M bought by 222 investors
Van Eck Associates Corp$58MUBS Group AG$43M +220 more
$154M sold by 163 investors
Corient Private Wealth LLC-$52MJane Street Group, LLC-$19M +161 more
Bought Sold Totals per quarter; hover a bar for the names.

Main Street Capital Corporation (MAIN) institutional activity · 385

Investor Type Est. change Change Δ Own Date
Van Eck Associates Corp · Added +$58M
Change +977K Date Q1 2026
Van Eck Associates Corp Added· Q1 2026 +$58M +977K Q1 2026
Corient Private Wealth LLC · Reduced −$52M
Change −875K Date Q1 2026
Corient Private Wealth LLC Reduced· Q1 2026 −$52M −875K Q1 2026
UBS Group AG · Added +$43M
Change +727K Date Q1 2026
UBS Group AG Added· Q1 2026 +$43M +727K Q1 2026
Two Sigma Investments, LP · Added +$27M
Change +452K Δ Own +623.7% Date Q1 2026
Two Sigma Investments, LP Added· Q1 2026 +$27M +452K +623.7% Q1 2026
Jane Street Group, LLC · Exited −$19M
Change −315K Δ Own −100.0% Date Q1 2026
Jane Street Group, LLC Exited· Q1 2026 −$19M −315K −100.0% Q1 2026
Qube Research & Technologies Ltd · Added +$18M
Change +296K Date Q1 2026
Qube Research & Technologies Ltd Added· Q1 2026 +$18M +296K Q1 2026
D. E. Shaw & Co., Inc. · Added +$16M
Change +265K Δ Own +95.1% Date Q1 2026
D. E. Shaw & Co., Inc. Added· Q1 2026 +$16M +265K +95.1% Q1 2026
Sanders Morris Harris LLC · New +$14M
Change +237K Date Q1 2026
Sanders Morris Harris LLC New· Q1 2026 +$14M +237K Q1 2026
Sound Income Strategies, LLC · Reduced −$13M
Change −218K Date Q1 2026
Sound Income Strategies, LLC Reduced· Q1 2026 −$13M −218K Q1 2026
BlackRock · Added +$13M
Change +214K Date Q1 2026
BlackRock Added· Q1 2026 +$13M +214K Q1 2026
Marshall Wace, LLP · New +$12M
Change +205K Date Q1 2026
Marshall Wace, LLP New· Q1 2026 +$12M +205K Q1 2026
Tudor Investment Corp Et Al · Reduced −$9.8M
Change −166K Date Q1 2026
Tudor Investment Corp Et Al Reduced· Q1 2026 −$9.8M −166K Q1 2026
Trexquant Investment LP · Added +$7.3M
Change +124K Date Q1 2026
Trexquant Investment LP Added· Q1 2026 +$7.3M +124K Q1 2026
Millennium Management LLC · Added +$6.7M
Change +113K Date Q1 2026
Millennium Management LLC Added· Q1 2026 +$6.7M +113K Q1 2026
State Street · New +$6.6M
Change +111K Date Q1 2026
State Street New· Q1 2026 +$6.6M +111K Q1 2026
Data through Q1 2026 · filed Jun 4, 2026
15 of 385

Famous investor activity in Main Street Capital Corporation (MAIN)

Main Street Capital Corporation (MAIN) insider trading

Company insiders, action and economics first; trade and filed dates last.
Dates
Insider Title Type Price Qty Value Owned ΔOwn Trade date Filed date
Beauvais Jason B. · Officer Sell −$353K
Price $51.73 Qty −7K Owned 196K ΔOwn −3.4% Trade date Jun 30, 2026 Filed date Jun 30, 2026
Beauvais Jason B. Officer Sell $51.73 −7K −$353K 196K −3.4% Jun 30, 2026 Jun 30, 2026
Foster Vincent D. · Director 3 operations 0
Owned 70K Trade date May 18, 2026 Filed date May 20, 2026
Foster Vincent D. Director 3 operations 0 70K May 18, 2026 May 20, 2026
Lane Brian E. · Director 2 operations $13K
Price $50.45–$50.69 Qty 265 Owned 52K Trade date May 15, 2026 Filed date May 28, 2026
Lane Brian E. Director 2 operations $50.45–$50.69 265 $13K 52K May 15, 2026 May 28, 2026
Magdol David L. · Officer 2 operations $7K
Price $50.65–$50.69 Qty 133 Owned 441K Trade date May 15, 2026 Filed date May 28, 2026
Magdol David L. Officer 2 operations $50.65–$50.69 133 $7K 441K May 15, 2026 May 28, 2026
Griffin Jon Kevin · Director 2 operations $14K
Price $50.45–$50.69 Qty 282 Owned 74K Trade date May 15, 2026 Filed date May 28, 2026
Griffin Jon Kevin Director 2 operations $50.45–$50.69 282 $14K 74K May 15, 2026 May 28, 2026
McHugh Ryan · Officer 2 operations $4K
Price $50.69 Qty 76 Owned 20K Trade date May 15, 2026 Filed date May 28, 2026
McHugh Ryan Officer 2 operations $50.69 76 $4K 20K May 15, 2026 May 28, 2026
Jackson John Earl · Director 3 operations $18K
Price $50.45–$50.69 Qty 361 Owned 2K Trade date May 15, 2026 Filed date May 28, 2026
Jackson John Earl Director 3 operations $50.45–$50.69 361 $18K 2K May 15, 2026 May 28, 2026
Shive Dunia A. · Director Other Form 4 events $5K
Price $50.45 Qty 109 Owned 27K Trade date May 15, 2026 Filed date May 28, 2026
Shive Dunia A. Director Other Form 4 events $50.45 109 $5K 27K May 15, 2026 May 28, 2026
Hyzak Dwayne L. · Director Other Form 4 events $23K
Price $50.69 Qty 456 Owned 507K Trade date May 15, 2026 Filed date May 28, 2026
Hyzak Dwayne L. Director Other Form 4 events $50.69 456 $23K 507K May 15, 2026 May 28, 2026
Solcher Stephen B. · Director Other Form 4 events $10K
Price $50.45 Qty 208 Owned 52K Trade date May 15, 2026 Filed date May 28, 2026
Solcher Stephen B. Director Other Form 4 events $50.45 208 $10K 52K May 15, 2026 May 28, 2026
Beauvais Jason B. · Officer Other Form 4 events $6K
Price $50.69 Qty 110 Owned 203K Trade date May 15, 2026 Filed date May 28, 2026
Beauvais Jason B. Officer Other Form 4 events $50.69 110 $6K 203K May 15, 2026 May 28, 2026
Foster Vincent D. · Director 2 operations $79K
Price $50.69 Qty 2K Owned 1.7M Trade date May 15, 2026 Filed date May 20, 2026
Foster Vincent D. Director 2 operations $50.69 2K $79K 1.7M May 15, 2026 May 20, 2026
Lane Brian E. · Director 2 operations 2K
Price $55.76 Owned 52K Trade date May 4, 2026 Filed date May 6, 2026
Lane Brian E. Director 2 operations $55.76 2K 52K May 4, 2026 May 6, 2026
Jackson John Earl · Director 2 operations 2K
Price $55.76 Owned 84K Trade date May 4, 2026 Filed date May 6, 2026
Jackson John Earl Director 2 operations $55.76 2K 84K May 4, 2026 May 6, 2026
Foster Vincent D. · Director Grant (A) 538
Owned 1.7M Trade date May 4, 2026 Filed date May 6, 2026
Foster Vincent D. Director Grant (A) 538 1.7M May 4, 2026 May 6, 2026
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Main Street Capital Corporation (MAIN) activist and large shareholders

Dates
No Schedule 13D or 13G filing is available for MAIN in this range.

Main Street Capital Corporation (MAIN) ownership FAQ

Who owns MAIN?

385 reporting institutions disclosed MAIN position changes in the Q1 2026 snapshot.

How is institutional activity calculated?

For each manager, WhoBought compares accepted consecutive 13F share counts. Share change is current shares minus prior shares. Estimated dollar change is that signed share change multiplied by the split-adjusted quarter-mean close. The activity table on this page uses Q1 2026.

What are activist and large shareholder filings?

An investor crossing 5% of a share class generally files Schedule 13D for activist intent or Schedule 13G for a passive position. The technical form names appear here rather than in the activity rows.

Where does this data come from?

Ownership and institutional activity come from SEC Form 13F filings. Insider activity comes from SEC Form 4, and large-shareholder activity from SEC Schedules 13D and 13G. FMP supplies price data only. Company logos use the local verified Parqet cache with one shared fallback.

Why are ownership reports delayed?

Form 13F is a quarterly disclosure and is normally filed after the quarter ends. Every ownership and activity value therefore names its represented period; it is not presented as a live position.

How are missing table values shown?

A muted dash marks a missing table value. It means the filing omitted the value, comparable data is unavailable, or no prior position exists for comparison.