Large Bitcoin holders have significantly increased their transfers to exchanges in March, with transactions in the 100-1,000 BTC range dominating inflows. On-chain data indicates that the Bitcoin Exchange Whale Ratio has surged above its 30-day and 365-day moving averages, highlighting a growing concentration of sell-side supply from large holders. The Bitcoin Exchange Inflow Spent Output Value Bands metric shows that 80% of inflows in March were from the 100-1,000 BTC range, underscoring the influence of sizable transactions on short-term supply conditions. While this trend does not guarantee an immediate price decline, it raises the market's sensitivity to selling pressure from large participants.