AUC
ATIF Holdings Limited
stockNASDAQ

We tested XGBoost in our crypto futures system because we wanted to know whether machine learning could improve trade selection — not just produce a prediction, but actually help us avoid losing trades. The results were a useful reality check. In one test involving 115 trades, 21 were classified as losers. The model identified only 2 of those 21. Its predictive performance was around 0.55 AUC — evidence of a weak signal, but nowhere near proof of a usable trading edge. We then tried a different approach: segmenting trades by impulse size, direction and market regime to find a consistently bad category we could exclude. In the shorter sample, the worst segment accounted for 31.7% of total losses, below our predefined 50% threshold for a useful result. On the five-year historical sample, the corresponding worst segment accounted for just 3.4% of losses. So the model didn't give us a reliable way to filter entries, and segmentation didn't reveal a sufficiently concentrated source of losses either. We've therefore removed XGBoost from entry selection. For now, we've retained it only as a position-sizing modifier, with a coefficient of 0.6. That's a pragmatic engineering decision, not a claim that this sizing approach has been proven profitable — it still needs its own controlled test. The main lesson for us: a model can detect a weak statistical pattern without creating economic value. What matters is whether it improves results out of sample, after fees and slippage, against a baseline — using criteria defined before looking at the results.

Since no one actually provided any actual facts to u/MussleGeeYem \- wealthy people and experienced educated traders don't typically use Robinhood. Brokers and investment managers regularly disclose their AUC (assets under custody) and number of accounts. You can derive the average account size. As of August, 2026 - see Robinhood disclosure here - [https://investors.robinhood.com/static-files/109c7fdf-8d1c-474a-b7db-c3ef5cecab6b](https://investors.robinhood.com/static-files/109c7fdf-8d1c-474a-b7db-c3ef5cecab6b) Robinhood's average account size based on 28.6 million funded accounts and $383.7Bn in AUC means that the average funded account size is $13,416. In contrast - if you look at a broker like Schwab - [https://pressroom.aboutschwab.com/press-releases/press-release/2026/Schwab-Reports-Monthly-Activity-Highlights-7c5bb81a9/default.aspx](https://pressroom.aboutschwab.com/press-releases/press-release/2026/Schwab-Reports-Monthly-Activity-Highlights-7c5bb81a9/default.aspx) Average Schwab account size as of September, 2026 is about $334,497 - although that includes their bank assets and not just brokerage and investment management accounts. For experienced and sophisticated traders and investors - they typically don't use Robinhood because Robinhood lacks trading services typically needed by more sophisticated traders/investors. For example - Robinhood doesn't offer staples like portfolio margin for traders, access to mutual funds and fixed income assets for diy investors. That said - this doesn't mean that a broker like Robinhood isn't used by wealthy or sophisticated investors. There are lots of services provided by Robinhood that simply caters to different demographics. Robinhood has a roboadvisor that I think can be better the offerings from the larger FI's. And there are lots of very sophisticated investors that simply use Robinhood for their tax-advantaged accounts because of the matching. I don't use Robinhood because their services just don't fit my needs but it doesn't mean that it won't fit someone else.