This is a link-heavy comprehensive list of resources for investors, which the average retail investor can use to conduct thorough investment research for little to no cost. This list will be regularly updated. If you have any recommendations that will make this list more useful, please contact me!

Note: Referral links may be included (at no additional cost to you).

Market News and Newspapers

• Bloomberg
• Reuters
• Financial Times
• Business Insider
• The Wall Street Journal
• The New York Times

Magazines

• Forbes
• The Economist
• Fortune
• Time
• Barron’s
• The New Yorker

Email Newsletters

• The Wall Street Journal
• Bloomberg
• Wall Street Breakfast (Seeking Alpha)
• Axios

Podcasts

• We Study Billionaires (The Investor's Podcast Network)
• Rational Reminder Podcast

Finance and Investment Knowledge

• StableBread
• Investopedia

Security Analysis

• Damodaran Online
• Macabacus
• BuffettsBooks

Insider Information

• OpenInsider
• WhaleWisdom
• InsiderTracking

Credit Ratings

• S&P Global Ratings
• FitchRatings
• Moody's

Preferred Stock

• Preferred Stock Channel

Historical Financial Data

• SEC
• Yahoo Finance
• QuickFS
• StockAnalysis
• Morningstar
• SeekingAlpha
• Barchart
• MarketBeat
• Nasdaq
• MSN Money
• MarketWatch
• Investing.com

Investment Analytics Platforms

These investment analytics platforms require registration but are currently free-to-use.

• Koyfin
• TIKR
• Docoh
• Atom Finance
• Fintel
• Finbox
• DATAROMA

Dividend Research

• Dividend.com

Fund Evaluation

ETF Research

• ETF.com
• ETF Research Center
• ETF Database
• Morningstar

Mutual Fund Research

• Morningstar
• Fidelity
• FINRA Fund Analyzer
• Zacks Investment Research
• Yahoo Finance Mutual Fund Screener

Stock Screeners

• TradingView
• Zacks Stock Screner
• CNBC Stock Screener
• FINVIZ Stock Screener
• Dividend.com Stock Screener
• Reuters

Stock Discussion Communities

Active trading focused:

• StockTwits
• TradingView

Value/passive investment focused:

• Bogleheads
• Value Investors Club
• SumZero

Market Information

• Current Market Valuation
• EarningsWhispers
• FINRA

Economic and Market Data

• Bureau of Labor Statistics
• SEC EDGAR
• Federal Reserve
• Bureau of Economic Analysis
• FRED

Stock Chart Comparisons

• Google Finance
• Stock Comparer
• Yahoo Finance
• Barchart
• MarketBeat

Finance and Investment Calculators

• StableBread
• Omni Calculator
• DQYDJ
• Dinkytown
• Buyupside

Financial Data API

• Wisesheets
• IEX Cloud
• Fmp Cloud
• Alpha Vantage
• Financial Modeling Prep
• Sharadar