What is the difference between internally and externally managed BDCs?

Internally managed BDCs (like MAIN): the BDC itself employs its own investment professionals, analysts, deal originators, and back-office staff; costs = direct employee salaries and benefits; importantly, management is incentivized through ownership of BDC stock; there are no separate management fees paid to a third-party manager; the economics of investment success flow directly to shareholders without a management fee layer. Externally managed BDCs (like ARCC): the BDC contracts with an external asset manager (Ares Management for ARCC; Blue Owl Credit for OBDC; Golub Capital for GBDC; etc.) to manage investments; the BDC pays the external manager both a base management fee (typically 1.0-1.5% of total assets annually) and an incentive fee (20% of income above a hurdle rate of typically 7%, plus 20% of realized capital gains); these fees significantly reduce the net return to BDC shareholders. Fee impact example: if a BDC has $1B in assets earning 12% gross yield ($120M), an external manager charging 1.5% base + 20% incentive fee (on income above 7% hurdle) would earn approximately $15M base fee + incentive fee of roughly $10M = $25M in fees; NII available for dividends = $120M - $25M (fees) - $20M (interest expense) - $5M (other expenses) = $70M; internally managed: same portfolio, NII = $120M - $20M (interest) - $10M (direct employee costs) = $90M; difference = $20M more NII for shareholders from internal management. Why external management persists: external managers provide scale, brand, deal flow, and investment expertise (Ares Management's platform provides ARCC access to deals it couldn't source independently); for many BDCs, the external manager's deal flow and expertise justifies the fee; MAIN's exceptional performance as an internally managed BDC is somewhat exceptional.

What is net asset value (NAV) in a BDC context and why does it matter?

Net asset value (NAV) per share for a BDC = total assets (primarily the fair value of the investment portfolio) minus total liabilities (primarily debt outstanding) divided by shares outstanding. Why NAV matters for BDC investing: BDC portfolios consist almost entirely of private company loans and equity — assets that don't trade on public markets and must be 'fair valued' by the BDC's board each quarter (with assistance from independent third-party valuations); NAV per share is the board's estimate of what the portfolio would be worth if liquidated at current market values; BDC NAV can deteriorate in two ways: loan losses (when portfolio companies default and the loan is impaired below cost) or mark-to-market declines (when rising interest rates or credit spreads reduce the present value of existing loans in the portfolio). BDC premiums and discounts to NAV: because BDC shares trade on stock exchanges, they can trade at a premium (stock price > NAV per share) or discount (stock price < NAV per share) to NAV; well-managed BDCs with strong track records (like MAIN and ARCC) often trade at a slight premium to NAV; poorly managed BDCs or those with credit concerns trade at discounts. MAIN's typical premium: Main Street typically trades at 1.4-1.7x NAV because investors pay for the quality of the internally managed structure, strong credit track record, monthly dividends, and supplemental distribution potential; new investors at this premium are paying $1.40-$1.70 for each $1.00 of invested assets, meaning the portfolio must earn an above-average return to justify the premium. ARCC's NAV trajectory: Ares Capital has maintained or grown NAV per share from approximately $8.45 at IPO in 2004 to approximately $19-20 in 2024 — NAV growth of approximately 2.5x over 20 years despite credit cycles, demonstrating exceptional portfolio credit quality management.

What is the lower middle market and why does Main Street focus on it?

Market segments in private credit: large-cap leveraged buyouts (LBOs) — companies with $5B+ enterprise value, typically taken private by large private equity firms (Apollo, Blackstone, KKR); broadly syndicated leveraged loans (BSL) market — arranged by investment banks and distributed to CLO managers and institutional lenders; highly competitive, narrow spreads; companies typically over $500M revenue. Upper middle market — companies with $200M-$2B+ revenue and $25M+ EBITDA; served by large BDCs (ARCC), major banks, and direct lenders; competitive but less so than BSL; typical all-in yields 8-11%. Middle market — $100M-$500M revenue companies; primary BDC focus for most large BDCs; moderately competitive; typical all-in yields 9-13%. Lower middle market (LMM) — companies with $10M-$150M revenue; too small for most institutional lenders; primary focus for Main Street Capital; less competitive; higher all-in yields 12-16%+. Why Main Street prefers LMM: the lower middle market is structurally less competitive because: institutional lenders (banks, CLOs, large BDCs) avoid it due to smaller individual deal sizes (higher per-loan origination cost); LMM companies are more relationship-dependent (can't just go to the syndicated market) and value trusted lending relationships; LMM borrowers pay higher interest rates reflecting the funding gap; Main Street often takes equity co-investments alongside its LMM loans, providing upside participation in successful companies beyond interest income; the equity co-investment portfolio (accumulated over many LMM relationships) has been a significant source of Main Street's supplemental dividends and NAV growth.

brimindinvest.com / compare / main-vs-arccLIVE

MAIN

Main Street Capital Corporation · Financials - Business Development Company (BDC)

$50.97

+1.38% this month

VERSUS

⟷

COMPARE

ARCC

Ares Capital Corporation · Financials - Business Development Company (BDC)

$18.03

-0.43% this month

Scoreboard verdict

Across AI score, momentum, valuation, upside, operating margin

MAIN

1

ARCC

2

ARCC LEADS 2/5

Comparison scoreboard

ARCC LEADS 2/5

AI Score

MAIN 32.3

ARCC N/A

1Y Return

MAIN ✓-6.33%

ARCC -7.62%

Fwd P/E

MAIN 12.94

ARCC ✓9.36

Target Up.

MAIN +12.48%

ARCC ✓+15.19%

Op. Margin

MAIN N/A

ARCC N/A

Metrics last refreshed: 6/20/2026

Quick take

MAIN vs ARCC Stock Comparison: AI Score, Valuation, Performance and Upside

Q: What is a Business Development Company (BDC) and how does it work?

A Business Development Company (BDC) is a closed-end investment company regulated under the Investment Company Act of 1940 (with special rules under the 1980 Small Business Investment Incentive Act) that invests primarily in the debt and equity securities of private U.S. companies — particularly small and mid-size businesses (the 'middle market') that typically cannot access the public debt markets (bond markets) or broadly syndicated leveraged loan markets because they are too small. BDC structure: BDCs are required to invest at least 70% of assets in 'qualifying assets' (primarily debt and equity of eligible portfolio companies — private U.S. companies with market value under $250M); BDCs must elect to be regulated investment companies (RICs) and distribute at least 90% of their taxable income to shareholders to avoid entity-level taxation (similar to REITs); BDC leverage: BDCs may leverage up to 1:1 debt-to-equity (since a 2018 rule change from the prior 1:1 asset coverage rule — allowing more leverage than before). How BDCs generate income: BDCs make loans to private companies at high interest rates (typically SOFR + 5-10% for floating rate loans, often totaling 8-14% all-in yields); BDCs also make equity co-investments alongside their loans; interest income from the debt portfolio minus BDC operating expenses = net investment income (NII); NII is distributed as dividends; gains from equity co-investments are distributed as capital gain distributions. Why middle-market companies borrow from BDCs: bank regulatory constraints (post-Basel III) make banks less willing to hold middle-market leveraged loans; BDCs fill the funding gap left by banks; BDC loans are typically floating rate, secured (first or second lien on assets), and carry covenants providing lender protections; BDC borrowers pay higher rates than large-cap leveraged loans but gain flexible, relationship-oriented capital.

Q: What is the lower middle market and why does Main Street focus on it?

Market segments in private credit: large-cap leveraged buyouts (LBOs) — companies with $5B+ enterprise value, typically taken private by large private equity firms (Apollo, Blackstone, KKR); broadly syndicated leveraged loans (BSL) market — arranged by investment banks and distributed to CLO managers and institutional lenders; highly competitive, narrow spreads; companies typically over $500M revenue. Upper middle market — companies with $200M-$2B+ revenue and $25M+ EBITDA; served by large BDCs (ARCC), major banks, and direct lenders; competitive but less so than BSL; typical all-in yields 8-11%. Middle market — $100M-$500M revenue companies; primary BDC focus for most large BDCs; moderately competitive; typical all-in yields 9-13%. Lower middle market (LMM) — companies with $10M-$150M revenue; too small for most institutional lenders; primary focus for Main Street Capital; less competitive; higher all-in yields 12-16%+. Why Main Street prefers LMM: the lower middle market is structurally less competitive because: institutional lenders (banks, CLOs, large BDCs) avoid it due to smaller individual deal sizes (higher per-loan origination cost); LMM companies are more relationship-dependent (can't just go to the syndicated market) and value trusted lending relationships; LMM borrowers pay higher interest rates reflecting the funding gap; Main Street often takes equity co-investments alongside its LMM loans, providing upside participation in successful companies beyond interest income; the equity co-investment portfolio (accumulated over many LMM relationships) has been a significant source of Main Street's supplemental dividends and NAV growth.

MAIN (Main Street Capital) and ARCC (Ares Capital) are both leading Business Development Companies providing private credit to U.S. middle-market companies, but with significant differences in size, management structure, and target market — Main Street is internally managed, focuses on lower middle-market companies (smaller businesses), pays monthly dividends, and trades at a premium to NAV reflecting management quality; Ares Capital is the world's largest BDC, externally managed by Ares Management, invests in larger middle-market companies with a massive diversified portfolio, and has an exceptional NAV preservation track record.

MAIN vs ARCC is internally managed premium BDC with LMM focus and monthly income (Main Street's aligned management structure, lower middle-market specialty, monthly dividend schedule, and supplemental dividends providing total income superior to externally managed peers — at the cost of a premium NAV multiple) versus the world's largest externally managed BDC with institutional-scale credit (Ares Capital's massive portfolio, Ares Management platform, exceptional NAV stability track record, and diversified middle-market exposure — with external management fees reducing net returns versus internal peers) — BDC quality premium versus BDC scale and diversification.

Live analysis · updated 6/20/2026

ARCC holds the edge across 2 of 5 key metrics in this comparison. MAIN has delivered stronger 1-year price return (-6.33% vs -7.62%), though ARCC trades at the lower forward P/E (9.36x vs 12.94x). Analyst consensus implies similar upside for both: +12.48% for MAIN and +15.19% for ARCC.

Normalized 1Y performance

MAIN

ARCC

Recent returns

MAIN

ARCC

Analyst price targets & sentiment

MAIN · 6 analysts

STRONG BUYHOLDSTRONG SELL

Hold (2.9/5.0)

Price target range

analyst low$50.00
analyst high$70.00
analyst mean$57.33
current price$50.97

+12.5% upside to analyst mean

ARCC · 13 analysts

STRONG BUYHOLDSTRONG SELL

Buy (1.7/5.0)

Price target range

analyst low$19.00
analyst high$23.00
analyst mean$20.77
current price$18.03

+15.2% upside to analyst mean

Who should consider this stock?

MAIN may suit investors who:

→Value internally managed BDC structure as eliminating external management fee drag and providing better long-term alignment between management and shareholders — MAIN employees eat their own cooking
→Appreciate the monthly dividend payment schedule combined with supplemental semi-annual dividends as providing the most income-friendly distribution cadence in the BDC sector
→Are focused on lower middle-market credit exposure where deal terms are generally more favorable (higher interest rates, stronger protections) and competition from large institutional lenders is limited

ARCC may suit investors who:

→Want the world's largest BDC's scale advantage — 400+ portfolio companies providing exceptional diversification and ARCC's access to larger credits unavailable to smaller BDCs
→Value Ares Capital's exceptional track record of NAV preservation through multiple credit cycles (2008-2009 financial crisis, COVID 2020) as evidence of superior underwriting discipline at scale
→Prefer a BDC where Ares Management's $400B+ alternative asset platform provides proprietary deal flow and sector expertise across the full range of middle-market private credit strategies

Performance & AI score

Metric	MAIN	ARCC
AI score	32.3	N/A
AI rank	#2094	N/A
Latest close	$50.97	$18.03
1M return	+1.38%	-0.43%
6M return	-12.54%	-5.92%
1Y return	-6.33%	-7.62%

$10,000 invested — hypothetical growth (dividends reinvested)

How much would $10,000 be worth today if invested at the start of each period, with all dividends reinvested?

Period	MAIN	ARCC
1Y ago	$10.09K (+0.9%) started 2025-06-18	$10.22K (+2.2%) started 2025-06-18
5Y ago	$29.27K (+192.8%) started 2021-06-18	$27.66K (+176.6%) started 2021-06-18
10Y ago	$101.91K (+919.1%) started 2016-06-20	$153.81K (+1438.1%) started 2016-06-20

Hypothetical — past performance does not guarantee future results.

Valuation & upside potential

Metric	MAIN	ARCC
Market cap	$4.74B	$12.95B
Trailing P/E	10.73	11.06
Forward P/E	12.94	9.36
Price/Sales	8.32	4.20
EV/Revenue	12.83	9.31
Analyst target	$57.33	$20.77
Target upside	+12.48%	+15.19%

Growth, profitability & risk

Metric	MAIN	ARCC
Revenue growth	2.20%	4.20%
Earnings growth	-58.70%	-64.10%
EPS growth	-58.70%	-64.10%
FCF margin	+41.95%	+29.50%
Operating margin	N/A	N/A
Profit margin	74.86%	37.30%
ROIC proxy	14.37%	8.29%
Return on equity	14.37%	8.29%
Dividend yield	6.05%	10.31%
Beta	0.73	0.62
Debt/equity	82.11	112.91
Current ratio	0.24	0.38
Quick ratio	0.24	0.32

Drawdown & downside risk

Lower drawdown and smaller single-period drops generally indicate a smoother ride, though they do not guarantee lower future risk.

1Y risk snapshot

MAIN max drawdown22.43%

ARCC max drawdown19.35%

MAIN max wkly drop12.12%

ARCC max wkly drop6.80%

5Y risk snapshot

MAIN max drawdown27.06%

ARCC max drawdown21.76%

MAIN max wkly drop14.42%

ARCC max wkly drop15.16%

10Y risk snapshot

MAIN max drawdown64.53%

ARCC max drawdown56.77%

MAIN max wkly drop45.65%

ARCC max wkly drop41.83%

Performance metrics by period

Period	Metric	MAIN	ARCC
1Y	Growth	-6.33%	-7.62%
	CAGR	-6.34%	-7.63%
	Sharpe ratio	-0.32	-0.58
	Max drawdown	22.43%	19.35%
	Max daily drop	7.56%	3.94%
	Max wkly drop	12.12%	6.80%
5Y	Growth	+83.51%	+52.35%
	CAGR	+12.91%	+8.79%
	Sharpe ratio	0.47	0.30
	Max drawdown	27.06%	21.76%
	Max daily drop	7.96%	8.76%
	Max wkly drop	14.42%	15.16%
10Y	Growth	+232.53%	+228.98%
	CAGR	+12.78%	+12.66%
	Sharpe ratio	0.41	0.42
	Max drawdown	64.53%	56.77%
	Max daily drop	21.93%	23.55%
	Max wkly drop	45.65%	41.83%

Business comparison

Category	MAIN	ARCC
Company	Main Street Capital Corporation	Ares Capital Corporation
Sector	Financials - Business Development Company (BDC)	Financials - Business Development Company (BDC)
Industry	N/A	N/A
Core business	Main Street Capital Corporation is an internally managed Business Development Company (BDC) that provides long-term debt and equity capital to lower middle-market companies (LMM — typically with revenues of $10M-$150M) and middle-market companies (revenues of $150M-$1.5B). Main Street's investment portfolio includes first-lien secured debt, second-lien debt, subordinated debt, and equity co-investments alongside its debt positions. Main Street is headquartered in Houston, Texas, and is unusual among BDCs in being internally managed — Main Street employs its own investment professionals rather than contracting an external asset manager, which aligns management incentives with shareholders and reduces management fees.	Ares Capital Corporation is the world's largest Business Development Company by total assets, managed by Ares Management Corporation (a leading alternative asset manager). ARCC provides financing solutions across the capital structure — first-lien senior secured loans, unitranche loans, second-lien loans, subordinated debt, and preferred equity — to middle-market private companies (typically revenue of $100M-$3B). ARCC also participates in broadly syndicated leveraged loans. Ares Capital is externally managed by Ares Management and benefits from Ares's scale, global sourcing capabilities, and expertise across credit, private equity, and real assets.
Investor focus	Investors track Main Street's net investment income (NII — the income generated from the debt portfolio after expenses), the regular monthly dividend (Main Street pays monthly dividends rather than quarterly — a distinctive feature), the supplemental dividend (Main Street's practice of paying additional semi-annual dividends from excess NII and realized gains), net asset value (NAV) per share, and non-accrual rate (percentage of the portfolio not paying interest).	Investors track ARCC's net investment income and dividend coverage, NAV per share (as ARCC has consistently maintained or grown NAV over time — a critical measure of credit quality), non-accrual rate and credit quality metrics, new investment originations (volume and yield on new deals), and leverage ratio (debt-to-equity, regulated by BDC rules at a maximum of 1:1 debt-to-equity).

MAIN strengths

→Internally managed structure eliminates the external management fee drag and aligns incentives with shareholders — Main Street's employees (including the investment team) own MAIN stock and are compensated in part through it; external BDC managers charge base management fees (typically 1.5% of assets) and incentive fees on income and capital gains; Main Street eliminates these external fees, resulting in higher net returns to shareholders per dollar of gross portfolio return
→Monthly dividend payment schedule with consistent supplemental dividends provides attractive income — Main Street has maintained monthly dividend payments through market cycles (including COVID); the supplemental semi-annual dividends provide upside sharing of exceptional earnings; the combination provides reliable and growing income to income-oriented investors
→Lower middle-market focus provides higher-yielding, less competitively crowded investment opportunities — LMM companies (revenue $10M-$150M) are too small for large institutional lenders but large enough to have established businesses; this segment has fewer competing capital providers than the broader middle market, allowing Main Street to negotiate better terms and higher interest rates

ARCC strengths

→World's largest BDC with $21B+ in total assets provides scale-based sourcing and diversification — ARCC's scale gives it access to larger, more complex credits; scale also provides portfolio diversification (400+ portfolio companies) that minimizes single-credit concentration risk
→Ares Management's platform provides deal sourcing and expertise across credit strategies — Ares Management's $400B+ in assets under management across private credit, equity, and real assets generates deal flow across market segments that ARCC can access; the Ares platform also provides expertise in sectors where ARCC invests
→Exceptional long-term track record of NAV stability through credit cycles — ARCC has maintained its NAV per share over multiple credit cycles (2008-2009 financial crisis, COVID 2020) without the NAV dilution that afflicted many BDC peers; conservative underwriting and early risk management when portfolio companies show stress has protected ARCC's book value

Risks to watch — MAIN

→Main Street's smaller portfolio size limits diversification versus larger BDCs — MAIN's portfolio is approximately $4-5B versus ARCC's $21B; concentration in any single credit can meaningfully impact NII and NAV
→Lower middle-market focus means higher credit risk from smaller, less diversified borrowers — LMM companies have less financial flexibility and fewer refinancing options if revenues deteriorate; default rates in LMM portfolios can exceed middle-market default rates in severe downturns
→MAIN typically trades at a significant premium to NAV (1.5-1.7x book value) — this premium reflects Main Street's internal management quality and consistent dividend track record; at elevated premiums, new investors are effectively paying more than book value per dollar of invested assets

Risks to watch — ARCC

→External management fee creates a structural return disadvantage versus internally managed peers like MAIN — Ares Management charges ARCC a base management fee (approximately 1.0-1.5% of assets) and an incentive fee on income and capital gains; these fees reduce the net return to ARCC shareholders versus what they would earn from a fee-free internal management structure
→Larger average investment sizes in the middle and upper-middle market mean more competition from large banks, CLO managers, and other institutional lenders — the broadly syndicated leveraged loan market (where ARCC also participates) is highly competitive with narrower spreads than the lower middle market
→BDC leverage limits constrain growth — BDCs are regulated under the Investment Company Act and face statutory leverage limits; ARCC manages leverage conservatively, which limits return on equity relative to MAIN's leverage profile

Frequently asked questions

A Business Development Company (BDC) is a closed-end investment company regulated under the Investment Company Act of 1940 (with special rules under the 1980 Small Business Investment Incentive Act) that invests primarily in the debt and equity securities of private U.S. companies — particularly small and mid-size businesses (the 'middle market') that typically cannot access the public debt markets (bond markets) or broadly syndicated leveraged loan markets because they are too small. BDC structure: BDCs are required to invest at least 70% of assets in 'qualifying assets' (primarily debt and equity of eligible portfolio companies — private U.S. companies with market value under $250M); BDCs must elect to be regulated investment companies (RICs) and distribute at least 90% of their taxable income to shareholders to avoid entity-level taxation (similar to REITs); BDC leverage: BDCs may leverage up to 1:1 debt-to-equity (since a 2018 rule change from the prior 1:1 asset coverage rule — allowing more leverage than before). How BDCs generate income: BDCs make loans to private companies at high interest rates (typically SOFR + 5-10% for floating rate loans, often totaling 8-14% all-in yields); BDCs also make equity co-investments alongside their loans; interest income from the debt portfolio minus BDC operating expenses = net investment income (NII); NII is distributed as dividends; gains from equity co-investments are distributed as capital gain distributions. Why middle-market companies borrow from BDCs: bank regulatory constraints (post-Basel III) make banks less willing to hold middle-market leveraged loans; BDCs fill the funding gap left by banks; BDC loans are typically floating rate, secured (first or second lien on assets), and carry covenants providing lender protections; BDC borrowers pay higher rates than large-cap leveraged loans but gain flexible, relationship-oriented capital.

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+1.1%HOLD

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