Why does crypto go up?

A cryptocurrency's price rises when buyers want more of it than sellers are offering at the current price. Because the supply of many coins is fixed or grows slowly, changes in demand show up almost entirely in the price. Several forces drive that demand.

Why does limited supply matter?

With shares or commodities, a higher price encourages more supply: companies issue stock, and miners dig more gold. Bitcoin cannot respond that way. Its issuance follows a schedule written into its code, with a cap of 21 million coins. When demand increases, the only thing that can adjust is the price.

Not every coin is scarce. Some have no cap, which is why a coin's supply rules, known as tokenomics, get so much attention.

What increases demand?

Easy money. When interest rates are low and credit is plentiful, investors take more risk. The rally of 2020 and 2021 coincided with near-zero interest rates and large government stimulus programs.

New access. Demand grows when buying gets easier for large pools of money. US spot bitcoin ETFs, funds that hold bitcoin and trade on stock exchanges, began trading in January 2024 and let investors gain exposure through ordinary brokerage accounts. Money flowing into such funds has to be matched by purchases of the coin.

Stories. Markets run on narratives: bitcoin as "digital gold," a new kind of application, a coin tied to a trend or a joke. A story that spreads brings in buyers.

Leverage. Traders using borrowed money magnify moves in both directions. When prices rise, those who bet on a fall are forced to buy back, which adds to the climb.

What about the halving?

Roughly every four years, the number of new bitcoin paid to miners is cut in half, an event called the halving. It took place in 2012, 2016, 2020 and 2024. Bitcoin reached new highs in the year or so after each of the first three, which gave rise to the idea of a four-year cycle.

Analysts disagree about cause. A few events make a small sample, the dates are known years in advance, and each of those rallies also lined up with loose financial conditions worldwide.

Why do rises feed on themselves?

Rising prices attract attention, attention attracts buyers, and new buyers push prices higher. The fear of missing out, often shortened to FOMO, is a real force in a market with no earnings to anchor valuations. Smaller coins have often risen fastest late in a rally, a pattern known as altcoin season.

Critics describe this loop as the "greater fool" dynamic, in which the main reason to buy is the hope of selling to someone else for more. Supporters argue that growing adoption justifies higher prices. Either way, the same loop runs in reverse, as why crypto crashes explains. Past rises do not indicate what comes next.