[Analemma_]

Interesting, I guess I just need a new broker. Amusingly, after I finished my comment I figured I'd log into my Fidelity account (which I hadn't done in a while), and I couldn't because it turns out they don't allow certain characters in their passwords and so the last time I changed my password it silently failed without telling me.

Still, Trigger sounds pretty neat even if you do have a non-crappy broker. As soon as HN picks it apart to make sure there are no obvious pitfalls, I'll definitely take a look.

[tedmiston]

There's a huge obvious pitfall with Trigger: information arrives several orders of magnitude too late vs. HFT. Investing in a style that mimics them but at hundreds (maybe thousands) of times slower is inherently flawed.

And if it helps inform your broker research, Robinhood is the exception to the rule when it comes to commission-free trades.