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Blog

Updates, insights, and lessons from the experiment.

Apr 30, 2026

Iteration 1 Recap: Four for Four

The first 42-trading-day iteration ended with all four portfolios ahead of the S&P 500. That is a great start, but the index had a strong run too, so the wins say less about the models than they do about the tape.

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Apr 25, 2026

Week 8 Recap: SPY Stalls, Portfolios Don't

The S&P 500 barely moved (+0.54%) but every portfolio kept extending its lead, with ML Model #2 now up 24.49% since launch. One Wednesday rally did most of the work, and the first scheduled rebalance is now five trading days away.

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Apr 18, 2026

Week 7 Recap: Five Green Days and a Wider Lead

Earnings season is here, the S&P 500 had its best week in a while at +4.52%, and every portfolio managed to do even better. Growth Evaluator quietly led the pack at +7.42% for the week.

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Apr 11, 2026

Week 6 Recap: Officially In The Green

Six weeks in, every portfolio is finally positive since launch. ML Model #2 leads at +10.46%, with the S&P 500 barely hanging onto a positive cumulative return.

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Apr 4, 2026

Week 5 Recap: A Nice Bounce on a Short Week

A four-day week courtesy of Good Friday, and all four portfolios made the most of it. Every model beat the S&P 500, and ML Model #2 crossed back into positive territory since launch.

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Mar 28, 2026

Week 4 Recap: The Streak Ends, Loudly

After three straight weeks of beating the S&P 500, all four portfolios took it on the chin. A brutal Thursday sell-off did most of the damage and erased ML Model #2's lead since launch.

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Mar 21, 2026

Week 3 Recap: Holding Strong Until Friday's Sell-Off

All four portfolios outperformed the S&P 500 for a third straight week, but a sharp Friday sell-off erased most of the week's gains. ML Model #2 continues to lead with +1.83% since launch.

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Mar 14, 2026

Week 2 Recap: All Four Portfolios Beat the S&P 500

Another volatile week driven by Middle East oil fears and a jittery VIX, but all four portfolios outpaced the S&P 500. ML Model #2 even squeezed out a positive gain.

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Mar 7, 2026

Week 1 Recap: What a Way to Start

Our first week coincided with one of the largest global conflicts in recent history. Here's how the portfolios performed and what we learned from our biggest losers.

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Mar 2, 2026

Welcome to the Launch of TheStockExperiment.com

After over a year of building, tuning, and backtesting, TheStockExperiment.com is finally live. Here's the story behind the launch.

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