Sunday evening. Many open tabs and excel spreadsheets, three opinions from three subreddits, and in the end my gut decides. That was how I picked stocks for my own portfolio. It started as an Excel spreadsheet. I wanted to choose stocks by rules I could still justify the next morning, so I wrote them down and scored companies against them. I'd fill all metrics by hand and update the data manually. This became way too much work quickly and I turned it into a private tool using a professional finance data API. You pick a metric, set a threshold with a slider, and give it points. No black box. The score is just the sum of the rules a stock meets, so you can always see why it got that number. Over time I expanded it further and further. It now covers about 16,000 stocks, updated every night, with a screener, side-by-side comparison, watchlists, portfolios and backtests. I also use the backtests to check my own work. Two strategies showed almost 40 % a year in an early version. That was caused by errors in my data. After I fixed them, they're at 9 % and 11 % a year before costs, and that's what the site shows. It gives no buy or sell signals. It only shows how well a stock fits the rules you chose. Not investment advice. Building it turned out to be the easy part. So far about 20 people have signed up and nobody pays yet, so I'd like some outside eyes. There's a free tier, and you can try it without an account (a smaller set of stocks, backtests need a free account): https://stockscorer.app/demo After a minute, do you understand what it does and who it's for? Where did you get confused or stop caring?   submitted by   /u/dermsen [link]   [comments]