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 sort of easy, Mati Greenspan, CEO and founding father of Quantum Economics, advised 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 an enormous occasion, “a handful of corporations determine the primary tradable worth. Oftentimes, they’ll explicitly use a worth that triggers cease losses for his or her purchasers, closing them out at a loss and making a revenue for the dealer who is basically buying and selling towards 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 mainly get to regulate costs, usually with hours to strategize,” he mentioned. “Typically searching stops losses. When huge 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 provide around-the-clock buying and selling companies. The NYSE mentioned it’s in search of SEC approval for twenty-four/7 buying and selling. Nasdaq introduced related 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 may very well be seen as accusatory, it isn’t onerous to see why such practices may very well be outstanding within the after-hours market. When the same old 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 ground dealer on the New York Inventory Alternate. “Folks have gone house and the liquidity just isn’t there, so that you’re going to see bigger spreads.”
Wider spreads and thinner order books, he mentioned, create an setting the place worth actions will be exaggerated in contrast with the common session.
Educational analysis additionally helps the view that prolonged buying and selling periods are structurally totally different from core market hours. A broadly cited joint UC Berkeley–College of Rochester examine discovered that after-hours worth discovery is “a lot much less environment friendly,” citing decrease quantity and thinner liquidity that restrict the pace at which data is included into costs.
When requested whether or not manipulation already happens throughout these intervals, Dente mentioned it’s “doable,” 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 broadly cited SSRN examine on opening worth manipulation reveals how brokers can affect costs throughout the pre-open public sale by submitting and canceling massive orders, quickly pushing shares away from their elementary 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 strange market volatility.
Nonetheless one other dealer, conversant in 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 broadly traded shares.
And this isn’t simply anecdotal proof.
In late 2025, the SEC settled fees 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 corporations for “failing to keep up fairly designed supervisory programs and controls, together with with respect to the identification and reporting of probably manipulative exercise performed 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 as we speak’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 pace is troublesome. “How does the human particular person sustain with that?”
And reacting to those occasions turns into even tougher 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 could usually present up as industry-wide alignment round routing and execution practices, particularly the place a big share of retail movement finally ends up with a small variety of wholesalers,” he mentioned. “Exterior common hours, scrutiny will be tougher as a result of the market is thinner and there are fewer easy reference factors for buyers to benchmark execution high quality,” Ramesh mentioned in his private capability.
Sources conversant in dealer routing and liquidity practices advised CoinDesk that price-setting energy in skinny periods is actual, notably when main information breaks whereas markets are closed. In accordance with 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 accordance with Greenspan, who mentioned 24/7 markets would blunt fintech corporations’ benefit by eradicating the weekend vacuum totally.
The latest Center East battle has been an ideal instance of how this could open up extra buying and selling alternatives when markets stay closed. Decentralized change, Hyperliquid, which trades on blockchain 24/7, has seen rising curiosity from merchants betting on conventional monetary property, together with oil and gold, throughout the weekend, when conventional exchanges are closed.
It has turn 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 complete Bitcoin blockchain’s income. The platform has additionally not too long ago added an S&P 500 perpetual contract.
Evidently, main exchanges will even possible 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 finally 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
