Lost BTC Supply Shrinks as Long-Dormant Whale Wallets Reactivate in 2025–2026

In 2025 and early 2026, the estimated volume of "lost" BTC decreased as long-dormant wallets began to move coins and early holders adjusted their positions. Billions of dollars' worth of BTC that had been idle for years were transferred for reasons ranging from profit-taking and custody changes to privacy and security concerns. On-chain data show more activity from coins held for over a decade, while newer cohorts favor active trading instead of extended holding.