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Show HN: A free ESG stock screener that publishes its losses and methodology

jumpstartsignal.com

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Re: Show HN: A free ESG stock screener that publishes its losses and methodology

#21

Post by iterateoften »

irldexter wrote: post #11
Esophagus4 wrote: post #10

A question I have: do you have a background in capital markets? Because what it looks like is you asked Claude to create a stock picking newsletter based on signals that retail commonly thinks are bleeding edge but institutions have been using for two decades and probably don’t give much edge anymore (AI analysis of news sentiment…) And you backtested from 2012-2025, one of the longest bull runs in history. Of course…

No hedge fund background, fair cop. I'm a software developer who got frustrated with discretionary noise and built something rules-based. On the bull run, alpha here is measured against SPY, which ran the same period. The claim is relative outperformance, not that we picked a rising tide. The window also includes 2020 and 2022, not great for momentum strategies. Signals that showed near-zero predictive value in stati…

Unless you know exactly why paper trading sims are so hard to backrest in practice, it’s silly to make arguments on why your paper trading sim works.

It’s insanely easy to make a trading algo profitable on historical data.

Re: Show HN: A free ESG stock screener that publishes its losses and methodology

#22

Post by irldexter »

anonymousiam wrote: post #20

Why limit your investments to ESG stocks only? If the purpose of your investment is to get maximum returns, you shouldn't do that. Is ESG Investing Losing Its Shine? ESG Stocks Continue To Underperform The S&P 500: https://finance.yahoo.com/news/esg-investing-losing-shine-es...

So, you kind of hit the nail on the head with "if" and "purpose". So, this is not an ESG fund (per your link) and more about baked-in filtering/excluding certain parts of the investable universe (with additional criteria), for an SRI (Socially Responsible Investing) approach. At the end of the day, some people simply don't want to profit or invest in certain industries, regardless of the return differential. I would say that's really a personal call, not a financial mistake.

Re: Show HN: A free ESG stock screener that publishes its losses and methodology

#23

Post by irldexter »

iterateoften wrote: post #21
irldexter wrote: post #11

Earlier quoted context omitted.

No hedge fund background, fair cop. I'm a software developer who got frustrated with discretionary noise and built something rules-based. On the bull run, alpha here is measured against SPY, which ran the same period. The claim is relative outperformance, not that we picked a rising tide. The window also includes 2020 and 2022, not great for momentum strategies. Signals that showed near-zero predictive value in stati…

Unless you know exactly why paper trading sims are so hard to backrest in practice, it’s silly to make arguments on why your paper trading sim works. It’s insanely easy to make a trading algo profitable on historical data.

Overfitting on historical data is a real risk and defo a concern (there's been lots of learnings lately). The backtest wasn't naive. Fundamentals used filing dates not period-end dates to avoid look-ahead + scoring was validated out-of-sample using walk-forward testing rather than just optimised in-sample (GA used 5 temporal folds and walk-forward used 25 rolling out-of-sample windows).

Re: Show HN: A free ESG stock screener that publishes its losses and methodology

#24

Post by Esophagus4 »

irldexter wrote: post #19
Esophagus4 wrote: post #18

Earlier quoted context omitted.

One last question - as a percentage of your net worth, how much of your own money have you put into the stock picks generated through this analysis? I have a feeling I know the answer, but wanted to check.

Well, it's early, so there's only been 2 actionable signals so far; 1 unique ticker SPOTLIGHT and 1 OPPORTUNITY (MONITOR is just a watchlist flag i.e. continue to MONITOR). Am putting in 1K per SPOT/OPP so far. I also maintain ETF and ETC positions (and have good/bad performing stocks since before JSS). So yes, I am putting my money where my mouth is. I have another 10K ready to deploy specifically to this, and other…

The question was percentage of net worth :)

That will tell me how confident you are.

$10k out of $500k would say you’re toying around.

$10k of $20k seems like you believe it works.

Re: Show HN: A free ESG stock screener that publishes its losses and methodology

#25

Post by irldexter »

mbtrilla wrote: post #2

I run a free comparison site in a different vertical, and the "publishes its losses" line is what made me click. Methodology page on a niche aggregator earns its keep two ways: readers can check you didn't just rank things by vibes, and it's about the only piece of content that holds up once AI summaries start chewing through your other pages. Question I keep coming back to though: how often do you actually update th…

Added a changelog as per my previous comment/response https://jumpstartsignal.com/changelog/ Thanks for the feedback, makes sense!

Re: Show HN: A free ESG stock screener that publishes its losses and methodology

#26

Post by vivzkestrel »

Esophagus4 wrote: post #10

A question I have: do you have a background in capital markets? Because what it looks like is you asked Claude to create a stock picking newsletter based on signals that retail commonly thinks are bleeding edge but institutions have been using for two decades and probably don’t give much edge anymore (AI analysis of news sentiment…) And you backtested from 2012-2025, one of the longest bull runs in history. Of course…

- i am going to assume you have experience working at a fintech firm or a hedge funds firm from your post - why not share your methodology

Re: Show HN: A free ESG stock screener that publishes its losses and methodology

#27

Post by irldexter »

vivzkestrel wrote: post #26
Esophagus4 wrote: post #10

A question I have: do you have a background in capital markets? Because what it looks like is you asked Claude to create a stock picking newsletter based on signals that retail commonly thinks are bleeding edge but institutions have been using for two decades and probably don’t give much edge anymore (AI analysis of news sentiment…) And you backtested from 2012-2025, one of the longest bull runs in history. Of course…

- i am going to assume you have experience working at a fintech firm or a hedge funds firm from your post - why not share your methodology

Hiya, https://jumpstartsignal.com/how-it-works/ outlines the methodology + more additional interesting info in https://jumpstartsignal.com/changelog/ and https://jumpstartsignal.com/results/
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