Vetle Lunde from K33 has indicated that Strategy's STRC instrument may be contributing to Bitcoin's mid-month rallies. According to NS3.AI, BTC purchases through STRC increased significantly from 4,467 BTC in January of this year to approximately 46,872 BTC in April. Lunde noted that demand for STRC typically rises before the ex-dividend date, which is around the 15th of each month. However, K33 reported a recent slowdown in the use of this tool, with activity dropping to just 1 BTC.