Bitcoin’s 50% Rebound Tests the Four-Year Cycle—but Is It a Bull Market?

Bitcoin’s rebound is forcing a rethink of a familiar market script. River says the price rose nearly 50% from its June 2026 low, while Glassnode has described this downturn as a comparatively shallow bear-market regime. The recovery challenges the idea that each halving-linked cycle must end in a long, devastating slump—but price alone cannot establish that the bear market is over. 282612

Why the four-year cycle looks less dependable

Bitcoin’s halving reduces the rate of newly mined supply roughly every four years. That schedule has often framed expectations for a boom followed by a severe bust. River puts the average historical bear-market decline at 82%; by February 2026, it reported a decline of as much as 52% from the preceding high. Fidelity has likewise argued that the old pattern of steep, roughly 80% drawdowns may be fading, while cautioning that volatility will persist. These comparisons make the current cycle look different, not obsolete by proof. 33293512

What is driving the rebound?

Selling pressure has eased. River says long-term holders sold more than 2 million BTC over the preceding 24 months, but that selling had abated by August. Glassnode subsequently found selling into a major resistance area to be the lightest of the year. When fewer holders are willing to sell, buying can move the price more sharply. 297

Short squeezes accelerated the move. Glassnode traced a 26% rally from a mid-August low to a record single-day short-liquidation event. That is distinct from a lasting expansion in demand: traders closing losing short positions can propel a rally without becoming persistent buyers. 8

ETF demand is a counterweight to a supply-only story. Glassnode recorded $2.23 billion of ETF creations during the August squeeze. Its September 16 report then found stalled on-chain inflows, negative ETF flows, flat stablecoin supply and paused corporate buying. Later evidence was more positive: Morningstar reported $690 million in global Bitcoin ETF inflows on September 21. The readings cover different periods, so neither a claim of absent demand nor one of uninterrupted accumulation fits the evidence. 8621

What would confirm a sustained bull market?

Glassnode identified $83,000–$86,000 as a potential selling zone tied to holder cost bases and estimated ETF break-even levels. Bitcoin subsequently moved above $84,000 and, according to Morningstar, above $86,000. The question is whether it can hold those gains if selling returns, supported by persistent spot buying, on-chain capital inflows and ETF demand rather than another burst of forced short covering. 7202168

That test matters particularly because the rally occurred despite a Federal Reserve rate increase and the CLARITY Act’s failure to advance in the Senate. Those headwinds have not stopped the rebound, but neither the unusual speed of the recovery nor a brief move through resistance establishes a durable new cycle. 420