Main Street Capital

MAINNYSE United States Finance Finance/Investors Services

Market cap

$5.236 B

$56.00 -0.50%

Close of 22 Sept 2026

Revenue

—

Not reported

Earnings

$493.4M

#619 by earnings

Shares outstanding

93,508,461

Latest filing cover page

P/E ratio

10.6

Cap ÷ net income

Finance/Investors Services, ranked by market cap

All 37 →

#1Central SecuritiesCET$13.8B
#2Main Street CapitalMAIN$5.24B
#3HA Sustainable Infrastructure CapitalHASI$4.78B
#4Kayne Anderson Energy Infrastructure FundKYN$1.93B
#5BlackRock ESG Capital Allocation Term TrustECAT$1.57B

Insiders buying

All insider buying →

One open-market purchase by officers and directors of Main Street Capital, worth $150.6K. Grants and option exercises are excluded.

Ryan MchughVP, CAO & Assistant Treasurer$150.6K
2,550 shares at $59.05 on 13 Aug 2026 · filed 14 Aug 2026

What if Main Street Capital were worth as much as…

Open the what-if tool →

Gold $30.2T

$323,328.71

Per share 5,774× higher

Bitcoin $1.74T

$18,625.64

Per share 333× higher

Nvidia $5.52T

$58,986.82

Per share 1,053× higher

Or at a round number

$10.0B $20.0B $50.0B $100.0B

Where these numbers come from

Share counts and financials for Main Street Capital are taken from its own SEC filings via EDGAR: public record, not an estimate. Market cap is shares outstanding multiplied by the latest close. Last updated 23 Sept 2026. Read the methodology.