What is the 13F Pro Quality Score for MAIN?

13F Pro ranks Main Street Capital CORP (MAIN) on the 13F Pro Quality Score, a 0–100 composite of 32 fundamental signals including return on invested capital, free cash flow consistency, balance-sheet strength, earnings quality, growth durability, and valuation discipline. The score refreshes after each 10-K and 10-Q filing on SEC EDGAR. View MAIN's current score at https://13fpro.ai/research/MAIN (free sign-up required for the full ranking).

Which hedge funds own the most MAIN stock?

Based on the most recent Form 13F-HR filings on SEC EDGAR, the largest reported institutional holders of MAIN include UBS Group AG, MORGAN STANLEY, Legal & General Group Plc. Holdings are reported quarterly within 45 days of quarter-end and updated on https://13fpro.ai/research/MAIN as soon as new 13F filings post.

Where does 13F Pro source MAIN data?

All Main Street Capital CORP fundamentals and ownership data come directly from SEC EDGAR. Main Street Capital CORP files with the SEC under CIK 1396440. 13F Pro ingests XBRL financial facts from 10-K and 10-Q filings, Form 13F-HR institutional holdings, and Form 4 insider transactions, with no third-party rewrites or estimates.

What sector is MAIN in?

Main Street Capital CORP (MAIN) is classified in the Other sector. 13F Pro publishes sector-level fund flow analysis and quality leaders at https://13fpro.ai/research/sector/other.

How often is MAIN research updated on 13F Pro?

MAIN's fundamentals refresh within hours of each new 10-K or 10-Q filing on SEC EDGAR. Institutional ownership updates after each quarterly 13F filing window. Insider transactions update after each Form 4 filing. The 13F Pro Quality Score recalculates after every fundamentals refresh.

Main Street Capital CORP(MAIN)Stock Analysis

AI analysis on 2,800+ stocks →Deep AI analysis on 2,800+ stocks →

NYSE

Institutional-grade research for retail investors

SEC EDGAR: CIK 1396440 MAIN stock profile & AI dashboard →

13F Pro Quality Score

Not in ranked universe

Pending next ranking run

This company passes all size and coverage filters but hasn't been included in the latest quarterly ranking run. Rankings refresh on Jan 1, Apr 1, Jul 1, Oct 1.

Financial data, filings, and institutional holdings below are still tracked in full — only the proprietary quality composite is unavailable for this name.

MAIN Stock Analysis & AI Quality Score

AI stock analysis and institutional research for Main Street Capital CORP (MAIN). MAIN is not currently included in 13F Pro's AI-ranked quality universe — this company passes all size and coverage filters but hasn't been included in the latest quarterly ranking run. rankings refresh on jan 1, apr 1, jul 1, oct 1. Based on the latest XBRL financial filings (Q1 2026), Main Street Capital CORP reports net income of $49.0M, free cash flow of $-138.5M. Top institutional holders of MAIN by reported 13-F value include UBS Group AG, MORGAN STANLEY, Legal & General Group Plc, based on the most recent SEC filings. MAIN trades on the NYSE exchange and files with the SEC under CIK 1396440. 13F Pro's AI research platform runs 10 specialized AI analysts — value, growth, momentum, macro, and activist specialists — that debate MAIN daily and publish AI-generated analysis with cited SEC sources. The platform aggregates historical XBRL financial facts, 10-Q and 10-K filings, insider Form 4 transactions, and institutional 13-F holdings for Main Street Capital CORP directly from SEC EDGAR.

Net Income

Q1 2026

$49.0M

Free Cash Flow

Q1 2026

$-138.5M

D/E Ratio

Q1 2026

0.82

Revenue & Net Income

Earnings Per Share

Key Financials Over Time

Export Financial Table · Pro+

Net Income

+15.2% YoY

$493.4MFY 2025

FY20 $29.4MFY21 $330.8MFY23 $428.4MFY25 $493.4M

EPS (Diluted)

-2.2% YoY

$3.95FY 2025

FY20 $2.10FY21 $2.65FY23 $4.04FY25 $3.95

Total Assets

+27.9% YoY

$5.68BFY 2025

FY20 —FY21 $3.69BFY23 $4.44BFY25 $5.68B

Total Debt

+36.4% YoY

$2.46BFY 2025

FY20 —FY21 $1.80BFY23 $1.80BFY25 $2.46B

Op. Cash Flow

-116.0% YoY

$-45.7MFY 2025

FY20 $-54.1MFY21 $-515.4MFY23 $285.3MFY25 $-45.7M

Metric	FY 2025	FY 2023	FY 2021	FY 2020	FY 2019	FY 2018
Net Income	$493.4M +15.2%	$428.4M +29.5%	$330.8M +1025.7%	$29.4M	—	—
EPS (Diluted)	$3.95 -2.2%	$4.04 +52.5%	$2.65 +26.2%	$2.10	—	—
Total Assets	$5.68B +27.9%	$4.44B +20.4%	$3.69B	—	—	—
Total Debt	$2.46B +36.4%	$1.80B +0.4%	$1.80B	—	—	—
Operating Cash Flow	$-45.7M -116.0%	$285.3M +155.4%	$-515.4M -852.9%	$-54.1M	—	—

AI Insight: MAIN Financial Trends

Net income collapsed to $49M in Q1 2026 — lowest in the observed period — while debt surged to a new high of $2,530M.

• Net income dropped sharply from $131M in Q4 2025 to $49M in Q1 2026, the weakest quarter across all eight periods.

• Equity has grown steadily from $2,579M in Q2 2024 to $3,094M in Q1 2026, reflecting consistent book value accumulation.

• Operating cash flow turned deeply negative at -$218M in Q4 2025 and -$139M in Q1 2026, two consecutive large outflows.

⚠ Total debt rose to $2,530M in Q1 2026, the highest level observed, while net income hit a multi-quarter low simultaneously.

⚠ Two consecutive quarters of sharply negative operating cash flow (-$218M, -$139M) warrant monitoring for liquidity pressure.

AI Insight: MAIN Ratio Trends

Q1 2026 ROE collapsed to 6.3% — the weakest single-quarter reading in the dataset — flagging a sharp, potentially one-off earnings disruption.

• ROE peaked at 24.9% in Q4 2024 but has since trended down, hitting 6.3% in Q1 2026 — a 18.6pp decline.

• ROA followed a similar path: 13.6% in Q4 2024 vs. 3.4% in Q1 2026, the lowest in the dataset.

• D/E improved steadily from 0.85 in Q2 2024 to 0.73 in Q3 2025, though it has since ticked back to 0.82 in Q1 2026.

⚠ Q1 2026 ROE of 6.3% vs. TTM ROE of 13.8% — gap suggests the quarter was an outlier; confirm if one-time write-downs drove this.

⚠ D/E rebounded to 0.82 in Q4 2025 and Q1 2026 after reaching a low of 0.73 in Q3 2025 — leverage trend reversal warrants monitoring.

Get alerted when MAIN's score changes

Free account: watchlist tracking, the daily AI brief, and the AI screener.

Passwordless sign-in · Payments by Stripe · Auth by Clerk

Available Research

13F Pro tracks comprehensive data for Main Street Capital CORP including:

SEC EDGAR filings (10-K, 10-Q, 8-K)

XBRL financial facts (revenue, EPS, margins)

Insider transactions (Form 4)

Institutional 13F holdings

Quality rankings (32 signals)

AI analyst debates & daily meetings

Historical financial trends

Peer comparison & sector analysis

Top Institutional Holders of MAIN

UBS Group AG
$70.9M1,338,812 sh
MORGAN STANLEY
$45.3M854,585 sh
Legal & General Group Plc
$41.5M784,021 sh
D. E. Shaw & Co., Inc.
$28.8M543,325 sh
TWO SIGMA INVESTMENTS, LP
$27.8M524,038 sh
Qube Research & Technologies Ltd
$25.7M485,799 sh
Muzinich & Co., Inc.
$25.7M484,823 sh
ADELL HARRIMAN & CARPENTER INC
$25.7M484,584 sh
Invesco Ltd.
$22.9M432,475 sh
BlackRock, Inc.
$22.5M424,235 sh

Fund	Value	Shares
UBS Group AG	$70.9M	1,338,812
MORGAN STANLEY	$45.3M	854,585
Legal & General Group Plc	$41.5M	784,021
D. E. Shaw & Co., Inc.	$28.8M	543,325
TWO SIGMA INVESTMENTS, LP	$27.8M	524,038
Qube Research & Technologies Ltd	$25.7M	485,799
Muzinich & Co., Inc.	$25.7M	484,823
ADELL HARRIMAN & CARPENTER INC	$25.7M	484,584
Invesco Ltd.	$22.9M	432,475
BlackRock, Inc.	$22.5M	424,235

More Other Companies

ACV

Virtus Diversified Income & Convertible Fund

ADX

ADAMS DIVERSIFIED EQUITY FUND, INC.

AEF

abrdn Emerging Markets ex-China Fund, Inc.

AFB

ALLIANCEBERNSTEIN NATIONAL MUNICIPAL INCOME FUND

AFCG

Advanced Flower Capital Inc.

AGD

abrdn Global Dynamic Dividend Fund

AIO

Virtus Artificial Intelligence & Technology Opportunities Fund

AOD

abrdn Total Dynamic Dividend Fund

Put MAIN on your watchlist

Track score changes the day Main Street Capital CORP files with the SEC, follow the hedge funds that own it, screen 2,800+ AI-scored stocks, and get the daily brief — free.

View Pricing

Free tier includes 13F data, economic indicators, and market overview. Pro starts at $6.67/mo (billed annually).

Passwordless sign-in · Payments by Stripe · Auth by Clerk

Popular Research

AAPL

Apple

MSFT

Microsoft

NVDA

NVIDIA

GOOG

Alphabet

AMZN

Amazon

Is MAIN a good stock to buy?

13F Pro's AI-powered analysis of Main Street Capital CORP (MAIN) draws on SEC EDGAR-sourced fundamentals, institutional 13F holdings, and insider Form 4 transactions (listed on NYSE). The 32-signal AI Quality Score, current rank, and full bull/bear verdict for MAIN are available on the MAIN stock profile dashboard — with the same data, AI insights, ratios, and institutional activity refreshed after every 10-K, 10-Q, 13F, and Form 4 filing.

Which hedge funds own MAIN?

Institutional investors are required to disclose their holdings quarterly via SEC Form 13F. 13F Pro aggregates these filings to show which hedge funds, mutual funds, and asset managers are buying or selling MAIN. Combined with insider transaction data from Form 4 filings and AI-powered analysis from 10 specialized research agents, 13F Pro provides a comprehensive view of Main Street Capital CORP's investment landscape.