[wolfman1]

This is typically true for day trading signal services. I'm very skeptical of them too. I've tried many of them and none worked for me. There are a lot of scams.

The best model I tried was from The Technical Traders. They offer a trend based model for SPX/QQQ and they consistently outperform buy and hold for 10+ years now.

We were inspired by their service and wanted to take a modern spin on trend based models with a more affordable price point (they charge $2500yr).

Trend changes don't happen all that frequently. Therefore, they wont disappear immediately either. Timing trend changes correctly can make a huge difference.

[fasthands9]

Even then you have to be careful.

It would be trivially easy to build an algo that beats the market 90% of years but 10% has huge losses. Just construct a slightly levered portfolio, with some protection against minor losses, but totally exposed to big losses.

If you sold that, it would appear like its working for awhile and you'd probably have lots of trusted customers by the time it fails.

(I'm a bit cynical, I worked in finance briefly, and I realized the fund we were selling to investors was essentially this)

[ImPostingOnHN]

> The best model I tried was from The Technical Traders. They offer a trend based model for SPX/QQQ and they consistently outperform buy and hold for 10+ years now.

- Has that been independently verified?

- Have they only been trading for 10 years?

- How do we make sure this isn't a case of chance + survivorship bias?

[wolfman1]

Not sure, but I personally used their service for 2y and they're the real deal. Looks like they've been around since 2008. So almost 20y now. The main guy that runs it (Chris V) is top notch. I'm not affiliate with them in anyway but I would highly recommend their service to anyone.