Wall Street's Tax-Efficient On-Ramp Shifts Whale Holdings from Self-Custody
For the first time in about 15 years, the amount of Bitcoin held in self-custody wallets has actually declined. This shift is attributed to a tax-efficient on-ramp built by Wall Street for whales who want to maintain their Bitcoin exposure without the hassle of holding onto keys.
The culprit behind this decline isn't a hack or mass sell-off but rather BlackRock's iShares Bitcoin Trust (IBIT). The fund has facilitated over $3 billion in Bitcoin deposits through in-kind creation mechanisms by late 2025. This allows large holders to swap their actual coins directly for IBIT shares, maintaining the same economic exposure without triggering a taxable event.
The in-kind creation process lets authorized participants deliver Bitcoin directly to the ETF's custodian in exchange for newly created fund shares. The holder's position remains unchanged in economic terms but shifts from personal wallets to regulated fund structures. This has made it easier and more cost-effective for large transfers, particularly for whales sitting on tens of thousands of Bitcoin accumulated over the past decade.
The trend is shifting towards ETF wrappers for several reasons beyond tax avoidance. Large holders are drawn to simplified estate planning, integration with traditional brokerage accounts, and the ability to use ETF shares as collateral for loans through conventional financial channels. These benefits have made it more attractive for whales to move their Bitcoin into regulated fund structures.