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Marlowe Keynes Toolbox — Professional Investment Research Tools

Investment Research Tools for Serious Investors

The Reading Room

A curated collection of essential readings for serious investors. These works have shaped the thinking of generations of successful investors.

Letters

Berkshire Hathaway Annual Letters

by Warren Buffett

The complete collection of Warren Buffett's annual letters to shareholders, spanning decades of investment wisdom.

Ongoing
Read
Books

The Intelligent Investor

by Benjamin Graham

The definitive book on value investing. A book of practical counsel that has guided investors since 1949.

15 hours
Read
Books

Poor Charlie's Almanack

by Charlie Munger

The wit and wisdom of Charlie Munger, covering mental models, investment philosophy, and life advice.

12 hours
Read
Books

Common Stocks and Uncommon Profits

by Philip Fisher

A pioneering work on growth investing and the scuttlebutt method of research.

8 hours
Read
Books

Margin of Safety

by Seth Klarman

Risk-averse value investing strategies for the thoughtful investor. A rare and sought-after classic.

10 hours
Read
Books

The Little Book That Beats the Market

by Joel Greenblatt

A simple formula for finding wonderful companies at bargain prices.

3 hours
Read
Letters

Howard Marks Memos

by Howard Marks

Insightful memos from the co-founder of Oaktree Capital on market cycles, risk, and investing psychology.

Ongoing
Read
Academic

Investment Valuation

by Aswath Damodaran

The comprehensive guide to valuation from the Dean of Valuation at NYU Stern.

20 hours
Read
Books

One Up on Wall Street

by Peter Lynch

How to use what you already know to make money in the market, from the legendary Fidelity fund manager.

8 hours
Read
Books

Antifragile

by Nassim Nicholas Taleb

Things that gain from disorder. A philosophical framework for understanding risk and uncertainty.

14 hours
Read
Reports

Federal Reserve Beige Book

by Federal Reserve

Summary of current economic conditions by Federal Reserve District. Published eight times per year.

30 min
Read
Reports

SEC EDGAR Database

by U.S. Securities and Exchange Commission

The official source for company filings including 10-K, 10-Q, 8-K, and proxy statements.

Varies
Read
"In my whole life, I have known no wise people who didn't read all the time — none, zero."

— Charlie Munger