Investor's Log

Three blind spots in the passive investing playbook

The hidden cost of zero tracking error, the "rising tide" bias, and the flaws of naive diversification

Dec 2 • 

I, Bayes

2

November 2025

Is META undervalued after the dip?

3-scenario analysis through expectations investing lens

Nov 12 • 

I, Bayes

4

1

Stock spin-off investing: does it still work today?

A backtest of 2023 spin-offs

Nov 4 • 

I, Bayes

6

2

October 2025

Expectations Investing: a fundamental book on stock valuation

Review & summary

Oct 22 • 

I, Bayes

5

4

2

ChatGPT for stock-picking: could simple AI screening improve a portfolio?

A quick backtest + thoughts about AI’s place in investment research

Oct 16 • 

I, Bayes

1

How do I combine active and passive investments

The time machine method

Oct 13 • 

I, Bayes

2

Undervalued growth stocks backtest: how a simple screener crushed the S&P 500

I expected these stocks to lag. They didn’t.

Oct 8 • 

I, Bayes

1

Seasonality in gold: do some months outperform the rest?

An analysis of returns over the past 25 years

Oct 5 • 

I, Bayes

September 2025

Why I quit investing in startups

Dopamine boost is not due diligence

Sep 12 • 

I, Bayes

Balancing return and stability

Ranking of 200+ ETFs that held up better than the world market over the last three crashes

Sep 12 • 

I, Bayes

Which European ETFs survived the three recent stock market declines

Case study

Sep 5 • 

I, Bayes

LLM vs. financial analyst, commodities vs. inflation, and two-factor funds vs. one

Insights from three recent research papers

Sep 3 • 

I, Bayes