The bet came from an unlikely corner of finance.
Tradeweb Markets—a trading platform giant that moves $2.6 trillion in notional value on an average day across bond, derivatives, and currency markets—announced Wednesday it had led a $31 million investment in Crossover Markets, a two-year-old cryptocurrency network founded by foreign exchange veterans. The Series B round values the startup at $200 million post-money, a figure that would have seemed improbable just a few years ago for a company built to match crypto orders without ever touching the underlying assets.
The deal, disclosed March 4, drew in a who's who of trading firms and crypto-adjacent investors: DRW Venture Capital, Illuminate Financial, Ripple, Virtu Financial, Wintermute Ventures, and XTX Markets all joined the round. But it's Tradeweb's involvement—its first serious foray into institutional crypto trading infrastructure—that signals something broader may be shifting in how Wall Street approaches digital assets.
Not through proprietary desks. Not through custody plays. Through the pipes.
The Infrastructure Play
Tradeweb serves more than 3,000 clients spanning 85 countries, a client list heavy with asset managers, hedge funds, and banks that have largely sat on the sidelines of crypto trading. The plan now is to integrate Crossover's CROSSx platform into Tradeweb's algorithmic order-routing technology, effectively giving that institutional base access to spot crypto liquidity without requiring them to overhaul their existing workflows or credit arrangements.
It's an FX-style market structure applied to Bitcoin and Ethereum, as Bloomberg Law framed it—a model that separates execution from the messier questions of custody and settlement that have kept many traditional players at arm's length.
The logic, at least as Crossover and its backers see it, is straightforward: institutional traders want speed, transparency, and the ability to route orders across liquidity pools without taking on counterparty risk. That's what electronic communication networks have provided in equities and foreign exchange for decades. Why not crypto?
Three Traders Walk Into a Startup
Crossover Markets was founded in 2022 by Brandon Mulvihill, Anthony Mazzarese, and Vladislav Rysin, a trio who cut their teeth running FX prime brokerage at Jefferies and building electronic trading systems at Credit Suisse and Euronext FX. Their pitch was simple, even if the execution wasn't: build a venue that looks and feels like the infrastructure institutional traders already trust, but make it work for digital assets.
They launched CROSSx in March 2023 with backing from Two Sigma, Flow Traders, Wintermute Ventures, and Nomura's Laser Digital arm, among others—a seed round reportedly worth $6.35 million. Since then, the platform claims to have matched more than $50 billion in notional value across 12 million trades. Nearly 100 participants were live on the network as of this week's announcement.
Last October, CROSSx recorded its largest monthly volume: $4.96 billion notional across 1.39 million trades. Respectable, though nowhere near the scale of Coinbase or Binance.
The company raised a $12 million Series A on June 26, 2024, led by Illuminate Financial and DRW Venture Capital, with most of its original strategic investors returning.
Speed, Scale, and No Custody Headaches
CROSSx operates out of Equinix data centers in London (LD4) and New York (NY4), proximity hosting beloved by high-frequency traders who measure edge in microseconds. The platform claims sub-20 microsecond matching engine latency. A Tokyo presence at Equinix TY3 was planned for the first quarter of 2026.
The ECN model itself is deliberately hands-off. Crossover doesn't custody assets or extend credit—participants bring their own prime brokerage relationships and settlement arrangements. For its U.S. expansion, announced last June, the company partnered with Hidden Road (since acquired by Ripple) for credit network access and BitGo Trust for qualified custody.
There's also a licensing angle. Crossover handed over its matching engine technology to Bakkt in June 2024 to power the BakktX ECN, suggesting the company might have ambitions beyond just operating its own venue. White-label infrastructure as a revenue stream, perhaps.
A Fragmented Landscape
Crossover is hardly alone in chasing institutional crypto trading. EDX Markets, backed by Citadel Securities, Fidelity, and Schwab, launched its non-custodial exchange in June 2023. LMAX Digital runs ultra-low-latency infrastructure across four global matching centers. Meanwhile, Cboe Digital wound down its U.S. spot market last year to focus on derivatives and clearing—a move that underscored just how challenging the space remains.
The competitive dynamic is fragmented, maybe unavoidably so. Traditional finance firms are still sorting out which model works: custodial exchanges, non-custodial ECNs, direct integrations with liquidity providers, or some hybrid that hasn't been invented yet.
Crossover's pitch, bolstered now by Tradeweb's distribution muscle, is that institutional clients don't want to learn new systems. They want crypto trading to plug into the order management systems and credit lines they already use. Whether that thesis holds—whether there's enough institutional demand to support multiple competing ECNs—remains an open question.
For now, though, the money keeps flowing. Crossover plans to use the Series B proceeds to enhance its CROSSx technology stack, expand global operations, and deepen integrations with liquidity providers and order management systems. The Tradeweb partnership, assuming it delivers on its promise, gives the company access to client relationships that have remained largely outside crypto markets.
Not a guaranteed path to success. But perhaps a more plausible one than most.
