StockArithm

Alternative data signals, run in public.

StockArithm is a public paper-trading lab for alternative data signals. Some are working. Some are failing. All of them stay visible.

See the public leaderboard Get the weekly lab notes
179 algos tracked Updated nightly Paper-traded in public Failures stay visible
Top 10 rolling 30D leaders vs SPY
Recent conditions have been rough and most signals are underwater. That is why we keep the full record visible.
98.1101.5104.9108.4 Apr 12Apr 24May 5
Algo Baileymol (Chaos Monger)VIX Term StructureQuantified Simple Monthly RotationAntonacci Dual Momentum Sector RotationAlgo Biscotti (Unconditional Loyalty)VIX Fear RotationUber Mobility IndexRetail Sales MomentumFINRA Dark Pool SignalFaber Momentum Rotation SPY baseline 108.4

Start Here

StockArithm is a public lab for alternative data signals.

We turn non-traditional inputs into trading ideas, test them honestly, and publish the results.

Some signals work. Some fail. We keep both visible.

What to look at first

How it works

Idea -> signal -> backtest if we can -> live run if we can’t -> public result.

Signals can go idle. Signals that underperform can fail. We keep both visible.

Why it matters

The point is not hype. The point is to see which signals add something beyond price alone.

One example

If TSA volume spikes, the lab can turn that into a travel or consumer signal, run it against SPY, and show whether it actually helps.

30-Day Rolling Leaders

  • 1. Algo Baileymol (Chaos Monger) — +6.15%
  • 2. Faber Momentum Rotation — +1.15%
  • 3. Antonacci Dual Momentum Sector Rotation — +3.73%

Recent leaders over the last 30 days.

View the leaderboard

What You Can Verify

Public counts update nightly. Right now the lab shows 179 total algos, 75 on the watchlist, 5 promoted, and 7 in the graveyard.

Watchlist means worth monitoring but not yet trusted. Promoted means strong enough to feature publicly. Graveyard means the idea failed badly enough that we keep it visible as a dead end.

Read the daily snapshot

Signal Index

All 179 signals in one public list. Names, families, and status only. No rank and no returns.

A lot of the lab is still collecting data, waiting on better history, or sitting in sandbox until the first real trade fires. Families show what each cluster is trying to measure.

Browse all signals Browse families

Get the weekly lab notes.

A short weekly note on which signals are holding up, which are breaking, and what the lab learned.

No hype. Just the state of the lab.

Disclaimer

The information provided by this website, its tools, and any associated content is for informational and educational purposes only. Nothing here is financial, investment, legal, or tax advice.

This service publishes experimental signals, research outputs, and historical observations. These are not recommendations to buy, sell, or hold any asset.

Trading and investing involve significant risk, including possible loss of principal. Past performance does not guarantee future results. Signals, models, results, and third-party data may be incomplete, incorrect, delayed, or revised.

You are solely responsible for your own financial decisions. Do your own research and consult a qualified professional before making investment decisions.

By using this service, you agree that the operators are not liable for losses, damages, or decisions made based on the information provided.

Read the full legal/disclaimer page