Short-term holders are the primary source of selling pressure during Bitcoin's recent pullback, transferring an average of 2,200 BTC per hour to exchanges within a 4-hour window. This spike marks the fourth highest since August's rally began, though transfer volumes on October 15 were lower than the previous peak on October 8, indicating weakening sell-side momentum from swing traders. Long-term holders transferred only 480 BTC per hour during the same period, demonstrating limited sensitivity to current price declines and macro headwinds. Despite a brief 3,700 BTC/hour spike on October 8 linked to a hardware wallet incident, data confirms that long-term investors are not driving exchange inflows. Analyst Murphy suggests the market participant structure remains solid, with foundational holders unlikely to exit at current levels.