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Good for use with investing in stocks
Thanks in advance.

This is by far the best website since it involves systematic testing of stock investing concepts.
Most people should buy index funds of various types and rebalance every year or two and come back 10 years from now; beating the market is not easy.
There are aggregator sites like CXO that examine claims. https://abnormalreturns.com/ also.
Be skeptical of claims.

This is by far the best website

Which website?

This is my summary of the posts so far:

What AI websites are good for use with investing in stocks?

The Mechanical Investing board on shrewdm is by far the best website since it involves systematic testing of stock investing concepts.

Be skeptical of claims. There are aggregator sites that examine claims:
https://www.cxoadvisory.com/
https://abnormalreturns.com/

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I asked Google search this question, and got this list: TrendSpider, Trade Ideas, Tickeron, LevelFields, StockGeist, Magnifi, Incite AI. None of these sound familiar.

I put the question into AI arena and received the following 2 answers:
gemini-2.5-pro: TrendSpider, Composer, Trade Ideas, Seeking Alpha's Quant Ratings.
minimax-m1: Trade Ideas, EquBot, Kavout, AlphaSense, SentimentInvestor, MarketSmith, Numerai, Palantir Gotham.

These 3 AI-generated lists are all different, with not much overlap. I've heard of Composer, but don't use it. I don't use any AI website for stock investing. Portfolio123 would probably be my first pick.
https://community.portfolio123.com/t/ai-factor-des...

The first AI-based P123 Designer Model was:
https://www.portfolio123.com/app/r2g/summary?id=15...
Cost $500.00/mo
Revised 5/14/2025 to use AI Factor
3-month return: 23.7% (S&P 500 return was 9.8%)
Liquidity (average of lowest 20%): $247,175. (average daily dollar volume)
Trades per Month (past 12 months): 19
Average # of Holdings 23.59

This is impressive 3-month out-performance, but this designer model might be investing in nanocaps. For comparison, {TinyTitans2022d2} 3-month return was 8%. My personal nano-cap screen had a 3-month return of 35%, but I'm not using this screen now. The screens I used had 3-month returns ranging from -8 to 26 (average 10.4). I beat the market, but not by much. The AI-based model return of 24% is credible, and it will be interesting to see how it does going forward.

Subject: Re: Tiny Titans
Nano cap screen with a 10-year CAGR of 25.
https://yorickm.com/Message.php?pid=35070349
https://gtr1.net/2013/?~TinyTitans2022d2:h21r0f2::...

You can create your own AI model on P123, as this blog discusses:

Why AI Factor from Portfolio123.com is a Complete Game Changer for (Private) Quants
Andreas Himmelreich, July 24, 2025
"For the first time, we have a platform that gives disciplined individual investors access to institutional-grade AI tools without the baggage. And the best part? You keep full control, insight, and creative freedom."
https://maxquantstrike.substack.com/p/why-ai-facto...

There was a long thread "ML for MI" in June 2024. There are no AI websites mentioned, but the thread discusses AI methods and possible pitfalls.
https://www.shrewdm.com/MB?pid=410527735&wholeThre...

I am a contrarian, and so not chasing the AI dream for now. Maybe later when there is less hype and more results. It is fascinating to watch the gold rush.

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Mechanical Investing FAQ

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