Three Bitcoin wallets, inactive since 2013, have transferred 300 BTC, worth over $35 million, to the Bitstamp exchange. This movement, occurring at block heights 915227 through 915232, marks the first activity from these wallets since Bitcoin was valued at $135. Each wallet moved 100 BTC to a P2SH address associated with Bitstamp, indicating a possible sell-off or conversion into other cryptocurrencies. This event is part of a larger trend of long-dormant wallets becoming active, though this transaction seems primarily aimed at trading on the exchange.