Bitcoin mining stocks have outperformed BTC by 455% over the past 12 months

While Bitcoin is up 900% in the last 12 months, shares in the four largest publicly traded mining firms are up 5,000% over the same period.
Source: Bitcoin mining stocks have outperformed BTC by 455% over the past 12 months (https://cointelegraph.com/news/bitcoin-mining-stocks-have-outperformed-btc-by-455-over-the-past-12-months)
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