River reports 81% of Bitcoin supply inactive for six months as holders tighten their grip

More than four out of every five Bitcoin in existence haven’t budged in at least six months. That’s according to River Financial’s September 23 newsletter, which paints a picture of a market where the vast majority of supply is simply sitting still, locked away by holders who appear entirely uninterested in selling.

The 81% dormancy figure lands at an interesting moment. Bitcoin’s price has climbed roughly 50% from its June 2026 lows, yet trading volumes have cratered 30% year-to-date and ETF inflows have been running below average. In other words, fewer people are trading, but the ones still in the game are decidedly not letting go.

The quiet accumulation beneath the surface

River’s data reveals that long-term holders have added over 3 million BTC to their positions since 2020. That’s a staggering amount of supply being pulled off the market and tucked into cold storage or long-duration wallets.

Meanwhile, movement from older coins has slowed to a trickle. Roughly 300,000 BTC changed hands from these long-held cohorts during the first half of 2026.

Retail investors flip from sellers to buyers

Perhaps the most telling shift in River’s findings involves individual and retail Bitcoin holders. After dumping a net 140,000 BTC during the first half of 2026, these same participants turned around and accumulated over 107,000 BTC during the third quarter.

The accumulation hasn’t been evenly distributed, though. So-called “dolphin” wallets, those holding between 100 and 1,000 BTC, have been doing the heavy lifting. These mid-tier holders scooped up more than 113,000 BTC since mid-July alone.

What 81% dormancy actually means for the market

To appreciate the significance of 81% supply dormancy, consider what it implies about available liquidity. Bitcoin’s circulating supply sits around 19.7 million coins. If 81% hasn’t moved in six months, that leaves roughly 3.7 million BTC as the “active” float, the pool of coins that could realistically hit an exchange and be sold on any given day.

River Financial itself appears to be practicing what it preaches. The company’s reserves stand at approximately 33,737 BTC against liabilities of around 33,499 BTC, maintaining what it describes as 100% Bitcoin reserves.

Disclosure: This article was edited by Vivian Nguyen. For more information on how we create and review content, see our Editorial Policy.