2A Market Sentiment Index · BTC

The market's mood. In one number.

Five market signals, weighted and combined every day into a single score from 0 to 100.

Today

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How it works See 80 days of data

Five signals. Fixed weights. Recalculated every day, and published in the open so anyone can check the work.

Today's signals

What's moving the score.

Each signal is scored from 0 for fear to 100 for greed, then weighted into the index.

How today's score is built

History

Eighty days of sentiment.

Drag across the chart to read any day. The line takes the colour of the mood it measured.

Methodology · v0.1

Open by design.

A serious index publishes its recipe. This is ours.

Step 1

Collect

Daily data from public sources: CoinGecko for price and volume, OKX for perpetual funding, DefiLlama for stablecoin supply.

Step 2

Normalise

Each raw signal maps to a 0–100 score by a fixed rule, so the same input always gives the same score.

Step 3

Weight

Scores combine with fixed weights. Momentum and leverage carry the most because they react fastest to the crowd.

Step 4

Publish

The score, every component and the raw inputs go out daily, with the full history kept on record.

2A Index = 0.30 × Momentum + 0.20 × Volatility + 0.25 × Funding + 0.15 × Stablecoins + 0.10 × Volume

0–24
Extreme fear

25–44
Fear

45–55
Neutral

56–75
Greed

76–100
Extreme greed

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Independent, student-led research on digital assets and the future of finance.

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