Bitcoin mining companies have sold over 15000 BTC since October last year, indicating a shift in the industry's holding strategy Odaily Planet Daily News: Listed Bitcoin mining companies have sold over 15000 BTC since October last year, marking a shift in the industry from the holding strategy prevalent during the previous bull market cycle. Last October was the peak of the market, and the subsequent significant pullback triggered deleveraging across the entire industry. According to Miner Weekly data from TheEnergyMag, multiple large mining companies participated in this round of selling: Cango sold 4451 BTC in February, accounting for approximately 60% of its reserves; Bitdeer reportedly cleared all its Bitcoin reserves last month; Riot Platforms conducted multiple BTC sales in December last year; Core Scientific plans to sell approximately 2500 BTC in the first quarter of this year. The largest listed mining company MARA Holdings has attracted attention this week due to regulatory document updates, which indicate that it may simultaneously buy and sell Bitcoin to maintain flexibility. MARA Vice President Robert Samuels clarified that the document allows for flexible sales but does not imply a large-scale clearance. MARA currently holds over 53000 BTC, making it the second largest publicly traded Bitcoin holder after Strategy. The profit margin of the industry continues to narrow, and some observers call it the most severe profit squeeze period in the history of mining companies. CleanSpark has fully repaid its Bitcoin secured credit line to reduce financial risk.