BATS.CO — Benchmark Asset and Trend Scenarios

A single, transparent market sentiment indicator (the BATS) that answers a simple question: "Is now a good time to buy stocks?"

The BATS blends widely-used public market indicators into a 0–100 score across eight buckets — Extremely Oversold, Very Oversold, Oversold, Slightly Bearish, Neutral, Slightly Bullish, Bullish, Extended. Every component is documented and independently backtested against S&P 500 forward returns.

Live at bats.co.

Current components

Component	Weight	Direction	Data source
VIX	25%	Contrarian: high fear = buying opportunity	datasets/finance-vix
Market Breadth (RSP/SPY spread)	25%	Confirmatory: broad participation is bullish	Yahoo Finance RSP, SPY
S&P vs 200-day MA	10%	State: far below = buy zone; far above = strong trend	Computed from Yahoo ^GSPC
Junk Bond Demand (HYG/LQD spread)	10%	Confirmatory: risk-on credit = bullish	Yahoo Finance HYG, LQD
% of Stocks Above 200 MA	10%	Breadth: broad participation = bullish; extreme washout = contrarian buy	~100 large-cap S&P constituents via Yahoo Finance (daily)
SPY 14-day RSI	10%	Contrarian: extreme momentum reverts	Computed from Yahoo SPY closes
NAAIM Manager Exposure	5%	State: low exposure = pros defensive = buy zone	naaim.org (weekly)
10Y-2Y Yield Spread	5%	Leading: inverted curve = recession warning; steep = healthy expansion	Treasury.gov daily par yields

Files

• index.html — Main dashboard (BATS gauge + components + backtest)
• markets.html — Charts, technical summary, market news
• indicators/*.html — Per-component explainer pages
• app.js — Component definitions, scoring functions, gauge rendering, live-data loader
• backtest.js — Standalone + blended backtest engine
• styles.css — All styling
• data/*.csv — Historical daily data (auto-updated by GitHub Actions)
• .github/workflows/update-data.yml — Daily update robot
• scripts/update-data.sh — Fetch + refresh logic used by the workflow

Run locally

The site fetches CSV files at runtime, so opening index.html via file:// won't work — use any tiny local server:

python -m http.server   # any port; opens on http://localhost:8000

VS Code's Live Server extension works too.

Deployment

Auto-deployed to Vercel on every push to main. The daily update workflow runs weekdays at 23:30 UTC (~7:30pm ET during DST), commits fresh market data, and Vercel redeploys within a minute — bats.co reflects the new close.

Disclaimer

For informational purposes only. Not investment advice. Historical patterns are not guarantees.