Stablecoins Didn't Solve Capital Efficiency. They Moved It.

Stablecoins were supposed to kill the nostro account. The trillions of dollars tied up across transactional and correspondent banking balances have long been one of the biggest hidden costs of cross-border payments. With so much idle capital held hostage by fragmented infrastructure, the hope was that blockchain-based settlement would help pave a better path. And there is no doubt that stablecoins have helped streamline global payments, with value moving more quickly and cost-effectively across more corridors than ever before. 

But speed is only half the equation. For every instant conversion a user executes, someone on the other side of that trade must hold the inventory to settle it on every venue, in every jurisdiction, at any hour. This capital burden has not disappeared with the arrival of stablecoins. Instead, it has simply been pushed to other ecosystem participants, and is compounding faster than many in the market recognize.

The Old Model Was Balance-Sheet-Heavy by Necessity

Traditional remittance operators solved instant cross-border transfer the only way they could: by pre-positioning enormous standby capital across every corridor they served. Businesses like Western Union and MoneyGram traditionally held distributed reserves to guarantee local liquidity on demand. This idle capital was the structural cost of promising speed in a fragmented global payments system.

The numbers illustrate the scale of this opportunity cost. Western Union's balance sheet at the end of 2025 shows $3.45 billion in settlement assets (e.g. capital held specifically to settle consumer money transfers), against full-year GAAP revenue of $4.1 billion. Multiply this model across the global payments industry and the cost becomes staggering. Industry estimates vary widely, but the direction is clear: cross-border payment providers still tie up substantial capital in pre-funded balances and settlement liquidity.

This was one of the key inefficiencies stablecoins were built to fix. But to date stablecoins have only managed to kick the issue down the road, as opposed to eliminating it outright.

Stablecoins Relocated the Burden — They Didn't Remove It

Stablecoins have genuinely reduced the capital burden on remittance operators, with value now moving across borders without pre-positioned reserves in multiple jurisdictions. But the capital requirement the remittance layer shed has now migrated to the conversion layer. This encompasses a broad ecosystem of OTC desks, fiat-to-stablecoin providers, and on/off-ramp counterparties that sit underneath the apps end users interact with. 

In other words, long-standing capital requirements have migrated one step down the stack. Someone still needs to quote USD/USDC at 3am in Lagos, or hold stablecoin inventory in a jurisdiction where banking rails run slowly. Far from being solved, the work of pre-positioning capital has simply become someone else's problem.

The Problem Compounds as the Asset Universe Expands

When stablecoins first emerged, the conversion layer's burden was relatively contained to a handful of fiat-to-stablecoin pairs across a manageable set of corridors. Tokenized finance has since expanded the asset universe in every direction, with tokenized equities, commodities, fixed income, FX, and real-world assets all coming onchain. 

Each new asset class multiplies the number of pairs the conversion layer must support. And every new pair requires inventory, and every new venue requires a separate position. As a result, what was already a difficult capital problem becomes combinatorially harder as assets, venues, and jurisdictions multiply.

Atomic settlement has been widely cited as a potential solution, but can actually further compound this capital burden. In a T+2 system, operators net positions across a settlement cycle, which compresses the gross inventory required across venues. Real-time settlement eliminates that window entirely. 

As the IMF noted in its April 2026 assessment of tokenized finance, "settlement becomes continuous, margining becomes automated, and liquidity demands materialize instantaneously." Every new asset class that tokenized finance absorbs adds another position that must be funded in full, at all times.

The Fix Is a Balance Sheet That Earns

A conversion layer that simply holds idle inventory to meet demand is economically unsustainable at the scale tokenized finance requires. The cost of carry across dozens of asset pairs, venues, and jurisdictions compounds quickly, and operators who simply hold without deploying are subsidizing the market rather than participating in it. 

The model we believe scales is an active, multi-asset balance sheet that earns on what it holds, not just a faster bridge or a better routing algorithm. When positioned capital is deployed across venues to close pricing gaps and capture dislocations as they open, the cost of providing liquidity becomes a source of return rather than a drag. The capital that would otherwise sit idle starts earning. That is the difference between a conversion layer that strains under the weight of an expanding asset universe and one that scales with it.

Without this, any-to-any conversion is technically achievable but economically unsustainable. Today’s onchain apps can promise frictionless financial exchanges. But without the right precautions they cannot promise that the infrastructure behind that promise is funded to deliver it at scale, across every pair, under every condition.

Axis Makes Any-to-Any Economically Viable

Every new asset class coming onchain today adds another position the conversion layer must fund, compounding a capital efficiency problem the onchain payments industry has never fully solved. The operators who figure out how to hold that capital productively will define what the next generation of payments infrastructure actually looks like.

Axis provides the infrastructure layer that closes the onchain capital efficiency gap the conversion layer has inherited. By operating as a cross-venue, cross-asset, cross-jurisdiction capital layer, Axis holds the multi-asset balance sheet required to support instant conversion across fragmented markets. From there, Axis is able to deploy this balance sheet as an active arbitrage engine that seeks to generate return on positioned capital rather than simply carrying cost.

Built by a founding team with an 8-year track record of 36% annualized returns, a 4.9 Sharpe ratio, and $400 million in peak AUM at their previous firm, Axis’ approach reflects a repeatable process for turning the capital demands of fragmented markets into a performance-generating operation. The team behind Axis brings a decade of operational expertise from across the digital asset ecosystem, including building and scaling major exchanges, infrastructure work at leading stablecoin issuers, and years running arbitrage strategies at institutional desks.

This background shapes how Axis approaches the problem: not as a fund seeking returns, but as infrastructure operators who understand what it takes to keep capital deployed productively across fragmented markets, 24/7. We make any-to-any conversion economically sustainable at scale.

Axis is opening its balance sheet to the public. Later this month, we are launching our live Transparency Dashboard, allowing the market to watch our institutional arbitrage engine generate performance in real-time. Follow us on X for early access and ongoing analysis of the market structure dynamics that move prices before they show up in the headlines.