US$1.8 Billion of Tokenized Gold Sits on One Contract While the Big Treasury Funds Sprawl Across Chains — and the Reason Isn't Gold.

The largest regulated tokenized gold token holds about US$1.8 billion of bullion on a single Ethereum contract, and under a quarter of it sits in the ten biggest wallets. On two plain on-chain measures — how many chains it lives on, and how concentrated its holders are — it looks nothing like the tokenized Treasury funds that dominate the same “real-world asset on-chain” headlines, which spread across many chains and cluster in a few institutional wallets. The interesting question is why.

The token is PAX Gold (PAXG), issued by Paxos, a trust company and custodian regulated by the U.S. Office of the Comptroller of the Currency. Each unit is backed by one fine troy ounce of allocated, London Good Delivery gold vaulted in London, with reserve attestations published monthly. It is worth watching not because gold on-chain is new, but because it is the cleanest specimen of a design choice the rest of the category keeps making the harder way.

Read the supply directly from the contract and there is nothing to reconcile: 448,889 ounces on Ethereum, one token, one chain, worth roughly US$1.8 billion at gold's mid-2026 price near US$4,000 an ounce. There is no second chain to add, no legacy share class to double-count, no bridged copy to net out. For a measurement product, PAXG is about as hard to under-count as an instrument gets — a contrast with the Treasury funds in this coverage, whose true size only resolves once you sum them across every chain they touch.

The Treasury funds do the reverse

The tokenized Treasury funds carrying most of this market's growth are built along the opposite two axes. On chains, they spread: our own reporting has traced BlackRock's BUIDL keeping two-thirds of its supply off Ethereum across Solana, Avalanche and more, and Circle's USYC concentrating roughly 97% on BNB Chain as exchange collateral. On holders, they concentrate: across the funds we measure, the ten largest wallets hold 71% to 100% of each fund's supply. PAXG's under-a-quarter is not merely lower — it is a different regime.

The tempting read is that this is simply what gold is: a store of value anyone holds in a wallet, priced off one global commodity, with no reason to fragment. That read is too neat. It isn't true of tokenized gold as a class — only of PAXG. Matrixdock's XAUM, a newer and much smaller gold token, is spread across four chains, its largest holding only about 45% of supply — more dispersed across chains than either BUIDL or USYC. Nor is PAXG even the largest tokenized gold token: Tether's XAUT is bigger at roughly US$2.5 billion, spread over two chains and, at under 8% in its top ten wallets, held even more broadly than PAXG. So gold is not inherently single-chain, and this isn't really a story about what gold is.

Less a philosophy than a phase

What most plausibly separates PAXG from the sprawling funds isn't asset class but age. PAXG has been live since 2019; it has had years to settle onto one chain and into a wide holder base. The Treasury funds — and XAUM — are recent, still in the phase where issuers launch on each new chain to capture flows and supply clusters with the first large allocators. On that reading, PAXG isn't the exception that proves gold is different; it's a preview of what a tokenized real-world asset can look like once it stops growing and consolidates. The evidence here is circumstantial — one mature token against a field of young ones — so treat it as the likeliest explanation, not a settled one.

Simplicity is doing work here

There is a reason the simplest wrapper is also among the highest-rated in this coverage. PAXG carries a trust score of 88 out of 100, tied for the top of our published set — a direct consequence of a fully-reserved, single-contract design with little to misread and few dependencies to break. The Treasury funds accept more structural complexity in exchange for reaching the venues where institutional cash moves; that is a rational trade, and one most of the category — including newer gold — is still making. PAXG mostly reads as a fund that has already come out the other side of it.

Why it matters: “real-world assets on-chain” is fast becoming a single line item in allocator decks — one label stretched over instruments with very different shapes. Some, like PAXG, are broadly distributed and verifiable on a single contract end-to-end. Others are fragmented across chains and clustered in a few institutional wallets, their real exposure only resolving once you sum every chain they touch. That gap doesn't track the asset class as cleanly as it first appears — it tracks how far along each instrument is. As tokenized RWAs move from curiosity to portfolio line, the open question is whether the sprawling, concentrated funds of today converge on something closer to PAXG's shape as they mature — or whether multi-chain fragmentation is where large tokenized assets simply live now, and PAXG is the exception rather than the preview.