If the closing bell has lengthy been a enterprise mannequin, then 24/7 buying and selling is an try to interrupt it. Because the NYSE, Nasdaq, CME and Cboe race to introduce round the clock buying and selling, the query is who stands to realize and who might lose.
The reply is kind of easy, Mati Greenspan, CEO and founding father of Quantum Economics, informed CoinDesk: “The most important losers in 24/7 inventory buying and selling gained’t be merchants: they’ll profit massively. It’s going to be the middlemen who’ve lengthy made cash when merchants can’t commerce.”
Greenspan, additionally a market analyst, alleged that when markets reopen after what he referred to as a giant occasion, “a handful of companies determine the primary tradable worth. Oftentimes, they’ll explicitly use a worth that triggers cease losses for his or her shoppers, closing them out at a loss and making a revenue for the dealer who is basically buying and selling in opposition to the consumer.”
When Greenspan was requested whether or not brokers coordinate round pricing throughout market closures, he was blunt in his declare: “Sure, manipulation outright.”
“They principally get to regulate costs, usually with hours to strategize,” he mentioned. “Usually searching stops losses. When large information occurs on weekends, the home tends to take liberties with pricing on the opening bell.”
His feedback come as a number of main U.S. exchanges wish to supply around-the-clock buying and selling companies. The NYSE mentioned it’s searching for SEC approval for twenty-four/7 buying and selling. Nasdaq introduced comparable plans in December. CME plans to roll out 24-hour crypto futures in 2026, pending approval, and Cboe not too long ago expanded U.S. index choices to 24/5 buying and selling.
‘Believable deniability’
Whereas Greenspan’s feedback could possibly be seen as accusatory, it isn’t onerous to see why such practices could possibly be distinguished within the after-hours market. When the standard buying and selling hours come to a detailed, at 4 p.m. ET, the skinny liquidity could make costs simpler to affect.
“After the 4 p.m. closing bell, you merely don’t have the identical liquidity,” mentioned Joe Dente, a flooring dealer on the New York Inventory Change. “Folks have gone house and the liquidity isn’t there, so that you’re going to see bigger spreads.”
Wider spreads and thinner order books, he mentioned, create an atmosphere the place worth actions could be exaggerated in contrast with the common session.
Tutorial analysis additionally helps the view that prolonged buying and selling periods are structurally completely different from core market hours. A extensively cited joint UC Berkeley–College of Rochester research discovered that after-hours worth discovery is “a lot much less environment friendly,” citing decrease quantity and thinner liquidity that restrict the velocity at which info is integrated into costs.
When requested whether or not manipulation already happens throughout these intervals, Dente mentioned it’s “attainable,” however he additionally identified that “the occasion of 24-hour buying and selling goes to depart issues open to manipulation,” referring to circumstances already seen in after-hours markets
Greenspan, in the meantime, famous that these alleged manipulation practices are “not precisely above board, so that they [brokers who might be taking part in such actions] have a tendency to keep up believable deniability.”
That is the place the road between precise manipulation and proof that such practises happen begins to blur.
A extensively cited SSRN research on opening worth manipulation exhibits how brokers can affect costs in the course of the pre-open public sale by submitting and canceling massive orders, quickly pushing shares away from their basic worth earlier than broader liquidity returns.
The analysis discovered that such manipulation can create distorted opening costs which might be later corrected as soon as the total market begins buying and selling, leaving buyers who purchased on the inflated worth with losses. As a result of these distortions happen earlier than regular buying and selling quantity returns, the ensuing worth strikes can seem indistinguishable from abnormal market volatility.
Nonetheless one other dealer, acquainted with in a single day buying and selling practices and who requested to not be named as a result of they weren’t approved to talk publicly, mentioned skinny in a single day liquidity can often make it simpler for coordinated methods to affect costs in much less extensively traded shares.
And this isn’t simply anecdotal proof.
In late 2025, the SEC settled expenses over a multi-year spoofing scheme involving misleading orders used to maneuver costs in thinly traded securities. Regulators additionally fined Velox Clearing $1.3 million for failing to detect “layering” and “spoofing” in unstable shares.
In the meantime, the U.S. Monetary Trade Regulatory Authority (FINRA), in its 2026 Annual Regulatory Oversight Report, cited companies for “failing to keep up fairly designed supervisory programs and controls, together with with respect to the identification and reporting of doubtless manipulative exercise carried out in after-hours buying and selling.”
A win for retail?
Whether or not it is onerous to level out how widespread these accusations are, one factor is for positive: if buying and selling goes 24/7, merchants would be the final winners, notably retail merchants.
In right this moment’s digital markets, merchants who reply quickest to market information have a structural benefit.
“There’s at all times an edge for whoever has the quickest computer systems and the most effective program writers,” mentioned Dente, noting that algorithms can react to information and orders “in a nanosecond.” For particular person buyers, he added, maintaining with that velocity is tough. “How does the human particular person sustain with that?”
And reacting to those occasions turns into even more durable for smaller buyers when the market is closed, leaving these retail or smaller merchants at an enormous drawback.
Pranav Ramesh, head of quantitative analysis for choices at Nasdaq and co-founder of Leadpoet, mentioned skinny markets can amplify these dangers.
“Dealer coordination might usually present up as industry-wide alignment round routing and execution practices, particularly the place a big share of retail circulation finally ends up with a small variety of wholesalers,” he mentioned. “Outdoors common hours, scrutiny could be more durable as a result of the market is thinner and there are fewer simple reference factors for buyers to benchmark execution high quality,” Ramesh mentioned in his private capability.
Sources acquainted with dealer routing and liquidity practices informed CoinDesk that price-setting energy in skinny periods is actual, notably when main information breaks whereas markets are closed. In response to these sources, coordination round routing, spreads and execution practices throughout prolonged gaps has traditionally been simpler exactly as a result of retail merchants can’t take part.
That is exactly what around-the-clock buying and selling will remedy for merchants, in keeping with Greenspan, who mentioned 24/7 markets would blunt fintech companies’ benefit by eradicating the weekend vacuum totally.
The current Center East battle has been an ideal instance of how this will open up extra buying and selling alternatives when markets stay closed. Decentralized alternate, Hyperliquid, which trades on blockchain 24/7, has seen rising curiosity from merchants betting on conventional monetary property, together with oil and gold, in the course of the weekend, when conventional exchanges are closed.
It has develop into so common that weekly derivatives buying and selling quantity on the platform topped $50 billion, whereas it generated $1.6 million in income over 24 hours, outpacing the whole Bitcoin blockchain’s income. The platform has additionally not too long ago added an S&P 500 perpetual contract.
Evidently, main exchanges can even seemingly profit from buying and selling charges in the event that they open for twenty-four/7 buying and selling.
Whether or not round the clock buying and selling in the end weakens brokers’ affect on worth setting stays to be seen. What is evident is that exchanges and buyers stand to realize from markets that by no means shut.
“Merchants can react in actual time with out being on the mercy of the middlemen — the brokers,” mentioned Greenspan.
Learn extra: Bitcoin’s weekend selloff could also be over with CME’s 24/7 crypto buying and selling transfer