Archive Invest | Felix | Substack

What Can Archive Invest Offer You

Archivist by Name. Outperform by Game.

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SoFi: The Real Growth Story Behind The Numbers

Oct 28, 2025 • Felix

The Future of Energy

Feb 15 • Felix

Why Big Tech is Betting Big on This Battery Company

Jan 29 • Felix

Down 47% from its peak. This business has never looked better.

May 31 • Felix

The Archive Valuation

A simple valuation model to determine whether Uber is a buy, today. In less than 5mins.

Mar 15 • Felix

Is Duolingo a Buy?

A simple valuation model to determine whether Duolingo is a buy, today. In less than 5mins.

Mar 11 • Felix

Why I Bought This Stock

A Hated Stock Primed For a Re-Rate

Jan 18 • Felix

Archive Invest

Archive Invest

Making Investing More Comprehensible | 5+ Years of Investing Experience

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The Archive Lens

Are We Heading Towards A Financial Crisis?

Understanding the 'Record' Surge in Private Credit Defaults

Mar 8 • Felix

The Better Version Of Klarna Or Not?

The BNPL Disruptor - Small, Profitable, and Taking on the Giants

Feb 22 • Felix

The Future of Energy

A Chinese Perspective.

Feb 15 • Felix

The latest from

Felix

200 million users. $10 billion in free cash flow. Still trading at a discount.

The Archive Breakdown

200 million users. $10 billion in free cash flow. Still trading at a discount.

Welcome to the ‘5min Stock Breakdown’ series!

Jun 7 • Felix

Down 47% from its peak. This business has never looked better.

Welcome to the ‘5min Stock Breakdown’ series!

May 31 • Felix

The Company That Gets Paid Every Time a Hostile Drone Is Shot Down

Welcome to the ‘5min Stock Breakdown’ series!

May 24 • Felix

The Company Building the Solar Factory America Does Not Have Yet

Welcome to the ‘5min Stock Breakdown’ series!

May 17 • Felix