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Market Breadth (cross.breadth)

Breadth across S&P 500, Nasdaq, and small caps with Bitcoin correlation for each

Tier: basic | 4 metrics

Metrics included: bitcoin-price, spy, qqq, iwm

Metrics in this briefing

• Bitcoin Price: Current Bitcoin spot price in US dollars, updated every 2 minutes (CoinGecko or Coinbase; each value names its own) Source: CoinGecko or Coinbase, Every 2 minutes.
• SPY (S&P 500 ETF): SPDR S&P 500 ETF Trust - proxy for S&P 500 index (updates every 15 min) Source: Finnhub, Every 15 min (market hours).
• QQQ (Nasdaq 100 ETF): Invesco QQQ Trust - proxy for Nasdaq 100 index (updates every 15 min) Source: Finnhub, Every 15 min (market hours).
• IWM (Russell 2000 ETF): iShares Russell 2000 ETF - small cap proxy (updates every 15 min) Source: Finnhub, Every 15 min (market hours).

Correlations

Measured over 30 days:

• Bitcoin Price and SPY (S&P 500 ETF)
• Bitcoin Price and QQQ (Nasdaq 100 ETF)
• Bitcoin Price and IWM (Russell 2000 ETF)

Questions about the Market Breadth briefing

What is in the Market Breadth briefing?

Breadth across S&P 500, Nasdaq, and small caps with Bitcoin correlation for each. It holds 4 metrics and 3 correlation pairs over 30 days, each figure with the date it describes and the source it came from.

Which plan reads the Market Breadth briefing?

The Basic plan reads it, and every plan above Basic.

How does an AI agent read the Market Breadth briefing?

Over MCP, with the get_context tool and the briefing id cross.breadth. Over REST, with GET https://api.prereason.com/api/context?briefing=cross.breadth and an API key, as Markdown (the default) or JSON (format=json).

Can I read the Market Breadth briefing as of a past date?

Yes, with date=YYYY-MM-DD. A dated read serves only periods released by that date, and each figure says when it was public, or that it may be a later revision. How far back depends on the plan; on the Basic plan: The last 3 years. Higher plans reach further.

Where does the data in the Market Breadth briefing come from?

Each figure names its source and the date it describes. The data sources page (https://www.prereason.com/data-sources) lists every source PreReason reads.

API: GET /api/context?briefing=cross.breadth

Format options: ?format=markdown (default) or ?format=json

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