The Chicago Mercantile Exchange bitcoin futures price versus a volume weighted index of bitcoin spot markets.
Positive values (green) means the CME price is higher than the spot index. Negative values (red) means the CME price is lower than the spot index.
Whether a high CME price is bullish or not is up for debate so make of it what you will.
Weekends are highlighted with soft blue shading because during the weekend CME trading is halted which obviously has a big impact on the premium. There's an option to turn this shading off.
Markets included for the volume weighted index:
Coinbase USD
Bitstamp USD
Bitfinex USD
Kraken USD
FTX USD
Binance USDT
Huobi USDT
This indicator is free, enjoy.
הערות שחרור
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I had messed up the coloring a little bit. Fixed now.