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Show HN: I built an AI agent that helps me invest

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Re: Show HN: I built an AI agent that helps me invest

#12
The ideal design for such an agent is that it would tell you to put all your money in a Betterment account, and then if you try to do anything other than that it should give you electric shocks until you stop.

(Vanguard if you don't benefit from tax loss harvesting.)

Re: Show HN: I built an AI agent that helps me invest

#13
post #10

Well the most important information is missing: what was your ROI ? :D

I'm going to assume this project is at best a few years old, so return over index is more likely to be an indicator of overbetting (taking on too much risk) than a performance indicator. Backtesting would be more useful. Of course, LLMs cannot be backtested since they know the past. This system is impossible to test. I would be hesitant to trust it.

>> I'm going to assume this project is at best a few years old, so return over index is more likely to be an indicator of overbetting (taking on too much risk) than a performance indicator.

Best metric here would be a Sharpe Ratio and drawdown details. https://en.wikipedia.org/wiki/Sharpe_ratio

> This system is impossible to test. I would be hesitant to trust it.

Disagree. Best test would be a paper test going forward, audited by a common platform.

Re: Show HN: I built an AI agent that helps me invest

#16

The ideal design for such an agent is that it would tell you to put all your money in a Betterment account, and then if you try to do anything other than that it should give you electric shocks until you stop. (Vanguard if you don't benefit from tax loss harvesting.)

Is that going to beat FXAIX in a Fidelity account? The expense ratio is 0.015% and it tracks the S&P 500.

Re: Show HN: I built an AI agent that helps me invest

#17
post #10

Earlier quoted context omitted.

I'm going to assume this project is at best a few years old, so return over index is more likely to be an indicator of overbetting (taking on too much risk) than a performance indicator. Backtesting would be more useful. Of course, LLMs cannot be backtested since they know the past. This system is impossible to test. I would be hesitant to trust it.

>> I'm going to assume this project is at best a few years old, so return over index is more likely to be an indicator of overbetting (taking on too much risk) than a performance indicator. Best metric here would be a Sharpe Ratio and drawdown details. https://en.wikipedia.org/wiki/Sharpe_ratio > This system is impossible to test. I would be hesitant to trust it. Disagree. Best test would be a paper test going forwar…

Any forward test depends on market assumptions. I'm not a practitioner, and as a layperson I wouldn't know whose assumptions to trust.

Re: Show HN: I built an AI agent that helps me invest

#18

The ideal design for such an agent is that it would tell you to put all your money in a Betterment account, and then if you try to do anything other than that it should give you electric shocks until you stop. (Vanguard if you don't benefit from tax loss harvesting.)

Is that going to beat FXAIX in a Fidelity account? The expense ratio is 0.015% and it tracks the S&P 500.

The main benefit of something common and well supported like VIX is that it's easier to transfer between companies without selling it, which for a brokerage account is a taxable event.

Fidelity has no expense funds or low expense funds, but if they change their mind or the company becomes bad for you, you can't move it to another provider without being taxed.

If you will never leave Fidelity or if it's not taxable anyways (retirement) then it's fine, but if you think you might have to move assets then it's a potential risk unless other providers also support them.

Being trapped is not worth the slightly lower expenses IMO.

Re: Show HN: I built an AI agent that helps me invest

#19

Earlier quoted context omitted.

Is that going to beat FXAIX in a Fidelity account? The expense ratio is 0.015% and it tracks the S&P 500.

The main benefit of something common and well supported like VIX is that it's easier to transfer between companies without selling it, which for a brokerage account is a taxable event. Fidelity has no expense funds or low expense funds, but if they change their mind or the company becomes bad for you, you can't move it to another provider without being taxed. If you will never leave Fidelity or if it's not taxable an…

Thanks, that helps. In this case, it's my IRA money anyway, but that's good to keep in mind.
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