Marex, a global financial services firm, has significantly increased its investment in Bitmine, according to a recent 13F-HR filing. According to NS3.AI, the firm boosted its stake by 560.05%, holding over 10 million shares as of the fourth quarter of last year. This represents a substantial rise from the approximately 1.5 million shares reported in November. Bitmine's share price closed at $19.74 on February 12.

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