Reference feeds

Volatility indexes

Each chart plots only readings MarketVix actually fetched and stored, up to the latest 96.

sVIX

Stock VIX

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The CBOE Volatility Index via Yahoo Finance's delayed chart endpoint. No new readings while US equity markets are closed.

Source
Yahoo Finance ^VIX
Observed
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Provider
Open
cVIX

Crypto VIX

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Deribit's 30-day implied volatility index for Bitcoin options. Updates around the clock; readings older than 15 minutes are refused.

Source
Deribit BTC DVOL
Observed
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Provider
Open