# The Parker Experiment AI, operations, and the business of building things — tested in public, reported honestly. Page: Feed: --- ## [THE PARKER EXPERIMENT](https://theparkergroup.substack.com/p/the-parker-experiment-9a3) _2026-08-17 · Stephen Parker_ AI, operations, and the business of building things — tested in public, reported honestly. ## [Portfolio Wars, Week 10: Both AIs Are in the Green, One Just Called Its Shot in Advance](https://theparkergroup.substack.com/p/portfolio-wars-week-10-both-ais-are) _2026-08-14 · Stephen Parker_ For the first time since Week 1, both portfolios are profitable. Claude is up 8.2%, ChatGPT is up 2.93%. And one of them just publicly committed to a trade it has not made yet. ## [THE PARKER EXPERIMENT](https://theparkergroup.substack.com/p/the-parker-experiment-a70) _2026-08-10 · Stephen Parker_ AI, operations, and the business of building things — tested in public, reported honestly. ## [Portfolio Wars, Week 9: The Best Week of the Experiment, a Dramatic Comeback, and the Hardest Thing Either AI Has Done](https://theparkergroup.substack.com/p/portfolio-wars-week-9-the-best-week) _2026-08-07 · Stephen Parker_ The S&P 500 hit an all-time high. Claude is up 6.16% on $150 invested and beating every benchmark by meaningful margin. And ChatGPT clawed back 15 percentage points in a single week. ## [THE PARKER EXPERIMENT](https://theparkergroup.substack.com/p/the-parker-experiment-2e3) _2026-08-03 · Stephen Parker_ AI, operations, and the business of building things—tested in public, reported honestly. ## [Portfolio Wars, Week 8: The Worst Market Day in Months, a Microsoft Surge, and $50 More to Invest](https://theparkergroup.substack.com/p/portfolio-wars-week-8-the-worst-market) _2026-07-31 · Stephen Parker_ The Dow had its worst session since April on Wednesday. By Thursday it was a different story. Claude came out essentially flat. Then both AIs had to decide where to put new money. ## [THE PARKER EXPERIMENT](https://theparkergroup.substack.com/p/the-parker-experiment-8c6) _2026-07-27 · Stephen Parker_ AI, operations, and the business of building things — tested in public, reported honestly. ## [Portfolio Wars, Week 7: Alphabet Spent $200 Billion on AI and the Stock Fell. Here Is Where That Money Actually Goes.](https://theparkergroup.substack.com/p/portfolio-wars-week-7-alphabet-spent) _2026-07-24 · Stephen Parker_ The biggest earnings story of the week looked like bad news. For two positions in this portfolio, it was the opposite. ## [THE PARKER EXPERIMENT](https://theparkergroup.substack.com/p/the-parker-experiment-25e) _2026-07-20 · Stephen Parker_ AI, operations, and the business of building things — tested in public, reported honestly. ## [Auto-trade Cross-Exchange Gaps (Sponsored)](https://crawlproof.com/a/QtZATtBzl58X) _2026-07-20 · **Sponsored**_ Find cross-exchange spreads, backtest strategies, and execute automatically with risk controls. ## [Portfolio Wars, Week 6: When Good News Gets Punished, and a 47% Loss That Nobody Will Sell](https://theparkergroup.substack.com/p/portfolio-wars-week-6-when-good-news) _2026-07-17 · Stephen Parker_ The chip sector got hammered on strong earnings. Claude held its ground. ChatGPT's worst position is nearly cut in half, and both AIs are refusing to sell it.