For most people, the way a cryptocurrency price gets set seems straightforward: buyers and sellers meet on an exchange, and the last trade determines the price. In reality, that has not been how bitcoin, ether, or the broader crypto market actually functions for years.

Perpetual futures — also known as perpetual swaps or simply "perps" — are leverage-friendly contracts that never expire. First introduced by BitMEX in 2016 as an instrument unique to crypto, the design has since been replicated across virtually every major exchange and now accounts for approximately 93% of all crypto futures volume, with daily perp turnover routinely exceeding the underlying spot market.

Unlike a traditional futures contract, which has a settlement date that forces its price to converge with the spot price of the underlying asset, a perpetual contract has no expiry and can be held indefinitely. Holders pay a recurring cost known as the "funding rate," which fluctuates daily, to keep the position open.

Derivatives Lead Price Discovery

A substantial body of market-microstructure research has examined which venue "discovers" a bitcoin price first — meaning where new information enters the market before appearing elsewhere. The answer has consistently pointed to derivatives.

A study published in the Journal of Financial Markets by Carol Alexander and co-authors found that perpetual swaps on unregulated venues were the strongest instruments for bitcoin price discovery, with regulated futures and U.S. spot exchanges reacting to, rather than leading, those price moves. Other research has identified Binance's perpetual market as the primary source of price formation across the fragmented crypto landscape.

The evidence is not unanimous — some studies find that spot still leads at certain frequencies or during periods of market stress — but the overall trajectory of the literature in recent years has pointed toward derivatives as the locus of price formation. This marks a notable departure from traditional equities markets, where price discovery is generally anchored to regulated exchanges processing actual share transactions.

"Historically, we have seen perps leading mostly during bear market price rallies," Julio Moreno, head of research at CryptoQuant, told CoinDesk. "For example, Bitcoin perps demand growth (blue bars in the chart) led the price rallies of January 2026, and April-May 2026."

"In these periods, spot demand was contracting, while perps demand expanded, thus the perpetual futures market was leading prices despite demand contracting on the spot market," he said.

The Funding Rate Mechanism

Because a perpetual contract never settles, no built-in mechanism forces its price back toward spot in the way an expiry date does for a traditional future. Instead, every few hours, whichever side of the trade is more crowded compensates the other side.

When a perp trades above spot, traders who are long — betting on higher prices — pay those who are short, betting on lower prices. This payment structure nudges the contract price back toward the underlying asset's spot price.

The funding rate thus serves a dual purpose: it is both the tether that keeps the contract anchored to spot and a real-time readout of market sentiment, which is why many traders monitor it as closely as price itself.

"We actually surveyed more than 100 of our traders," Hong Yea, co-founder at onchain trading platform Grvt, told CoinDesk. "The traders who actually rely on us to hold real conviction positions want predictability there, not another data point to interpret."

"If you're holding a directional position for weeks, funding isn't telling you something new about the market, it's just eating into your PnL while you wait to be right. That's the honest way our users describe it to us, not, 'what is the market telling me,'" Yea added.

The SpaceX Pre-IPO Case Study

None of this price-discovery machinery requires a spot market to exist. For roughly three weeks in May and June, one of the most closely watched markets in the world involved a company that had never sold a single public share — and it was running entirely on crypto rails.

Elon Musk-owned SpaceX priced its record $75 billion initial public offering at $135 per share and began trading on the Nasdaq on June 12. Well before that date, traders on Binance, Coinbase, Hyperliquid, and other platforms were already buying and selling exposure to the company through pre-IPO perpetual futures — contracts structured to track an implied valuation rather than a share price.

The first mover was Hyperliquid, the onchain derivatives exchange, where a synthetic SpaceX perpetual went live on May 18. Binance opened its own SpaceX market on May 21, Coinbase followed on June 4, and BitMEX, Bitget, and OKX later added contracts of their own.

The remarkable part was how accurate those markets proved to be at the one moment their pricing could be tested. On the night before SpaceX listed, perpetuals on Hyperliquid and Binance were quoting the equivalent of roughly $170 per share — well above the $135 price set by underwriters.

The following day, SPCX opened, climbed to an intraday high above $176, and closed its first session at $161, up 19%. The stock printed almost exactly where the perps had placed it. A market dominated by leverage-seeking retail traders had read first-day demand more accurately than the investment banks that spent months building the offering price.

That gap was also where the profit opportunity lay. Because the perpetual market was pricing SpaceX well above the $135 IPO price, traders could buy the contract before listing and bet that the two would converge. Every one of these contracts was engineered to automatically switch over to SpaceX's real share price the moment the stock began trading, ensuring that any gap between the perp and the eventual opening price would close on its own. With the IPO already four times oversubscribed, the direction of the trade was rarely in doubt, and the pre-listing window was the only place to execute it.

Then reality caught up with the market that had predicted it so well. SPCX has fallen more than 40% from its June peak, dropping from the $135 IPO price to approximately $115 as of publication.

The reason is something the perp market could never have priced: supply. Only a small fraction of SpaceX's shares were sold at the IPO, and starting around August 6, roughly 900 million locked-up insider shares become eligible for sale. Lockup expirations — standard provisions in IPOs that restrict insiders from selling shares for a set period after listing — routinely introduce large, sudden supply that derivatives markets tracking only demand-side sentiment have no mechanism to anticipate.

What the SpaceX episode demonstrated in the extreme is precisely what the academic research says is already true in everyday crypto trading — the derivatives market is increasingly where price discovery happens. Spot follows.

Perps excel at pricing demand but are blind to supply, a distinction worth remembering every time a bitcoin rally or a sell-off begins in the funding rate before it reaches spot.