Cited, always
Every number shows its work — the trades, filings, and prices behind it. If we can’t source it, we don’t show it.
Finance should be
testable, not told.
Schmatz turns a plain-language question into a cited, paper-traded answer across five years of US equity history. Built for the curious — students, independent investors, and aspiring analysts.
Most of finance reaches you as a conclusion — a hot take, a headline, a number with no lineage. You’re asked to trust, rarely to check.
Schmatz is the opposite. It’s a place where you can ask, “what would have actually happened?” — and get an answer you can interrogate, line by line, source by source. Type an idea in plain language; it runs the backtest across five years of US equity history, attributes every shock, and hands back a cited result with the graph that proves it.
Every figure traces back to where it came from. Nothing is a recommendation. It’s a lab, not a tip sheet — a way to learn how markets behave by testing ideas against what they really did.
What we hold to
Three commitments that shape every screen.
Paper, not advice
Results are historical and illustrative — backtested net of costs. Nothing here is a recommendation to buy or sell.
Yours to keep
Nothing is saved unless you save it. Your runs are private by default, and exportable when you want to share the work.
What’s inside
01 · MARKET MAPIndex
A live treemap of the market — sectors, weights, and momentum at a glance. See where the day’s force is going before you dig in.
Open Index →02 · DEEP DIVEStocks
Per-name history, fundamentals, and the events that moved the price — each annotated and cited. The story behind the chart.
Open Stocks →03 · THE LABLab
Ask any idea in plain language. Schmatz runs the backtest, attributes the shocks, and returns a cited answer with the graph that proves it. Where curiosity becomes evidence.
Open Lab →5 yrs
US equity
history
history
15 min
Market data
delay
delay
100%
Answers carry
citations
citations
$0
To start —
free forever
free forever
Who’s behind it
A finance + information-systems student building Schmatz in the open — tired of taking finance on faith.
Thomas Schmatz
Operator · Finance + Information Systems
I’m building Schmatz solo as a personal research project — the research desk I wished I’d had as a student. The whole thing runs on a single VM I pay for myself; everything you see was built by hand. Honest about its limits, generous with its sources.
I build the tool I wished I’d had as a student —
honest about its limits, generous with its sources.
Ask your first question.
It’s free, it’s cited, and it starts with curiosity. See what your idea would have done.