MoonPay to Use WisdomTree's Ethereum (ETH) Fund WTGXX Across a 35M-Account Network

35 Million Accounts, One Tokenized Treasury Fund

WisdomTree and MoonPay announced a strategic partnership on September 17 that opens the asset manager's tokenized Treasury fund to MoonPay's network of more than 35 million accounts. The deal centers on the WisdomTree Treasury Money Market Digital Fund (WTGXX), a blockchain-native money market mutual fund that seeks to maintain a $1 share price. Under the arrangement, WisdomTree is building an access point using MoonPay's technology, adding a second on-ramp for eligible US investors beyond its own brokerage channel. WisdomTree manages roughly $176.7 billion in assets, and MoonPay brings distribution reach across more than 1,700 partner integrations. WTGXX was already the firm's flagship tokenized money product before the deal, and the new access point does not replace WisdomTree's direct channel — it sits alongside it. WisdomTree founder and CEO Jonathan Steinberg framed the tie-up around shifting payment behavior, saying the way money moves is changing and that stablecoins are reshaping how value is held and transferred, so investing has to keep pace. The companies said in their own announcement that they expect the collaboration to broaden over time, potentially covering additional tokenized funds and markets outside the United States. Neither firm disclosed which products would come next or on what timeline, so that expansion remains unconfirmed.

The reserve side of the deal is the structurally more interesting half. MoonPay plans to fold WTGXX into its own stablecoin reserve management stack, with that integration slated for 2026. MoonPay launched its enterprise stablecoin business in November 2025 and issues dollar-denominated stablecoins across several blockchains — a multi-network footprint of the kind cross-chain bridges exist to connect — with reserves held in US dollars and other high-quality liquid assets in segregated accounts. Putting a regulated tokenized money market fund inside that reserve stack would back payment infrastructure with a yield-bearing, registered vehicle. In the joint announcement the companies shared on X, MoonPay CEO Caroline Pham, who previously served as acting chair of the CFTC, called the partnership an example of financial innovation delivering a better investor experience within America's regulated markets. One caveat deserves weight: WisdomTree explicitly states it cannot guarantee the $1 share target, and WTGXX is not a bank account and carries no FDIC insurance. For stablecoin holders, reserve composition is the difference between a durable peg and a fragile one under stress. That makes the mechanics, not the marketing, the thing to monitor.

Tokenized Treasury Market Shrinks While WTGXX Gains

Aggregate data show the partnership lands in a contracting but consolidating market. RWA.xyz figures put the tokenized US Treasury fund market at roughly $15.4 billion as of Thursday, down about 4.9% over the trailing 30 days. Within that, WTGXX held around $1.23 billion, ranking fifth among tokenized Treasury funds, while BlackRock's BUIDL led the field at approximately $2.6 billion. Flow direction is the standout: WTGXX recorded $466 million in net inflows over the past 30 days — net flows being tokens minted minus tokens burned, effectively a circulating supply change measured on-chain — and Ondo's USDY was the only other fund in positive territory, at $66 million. Fund-level metrics reinforce the trend. WTGXX had 887 holders as of Thursday, counted across wallet addresses on its issuance networks, with an estimated seven-day annualized yield near 3.61%. The token exists on Arbitrum, Solana and Ethereum, though the bulk of value sits on Ethereum, which remains the fund's primary settlement layer even as issuance spreads across chains. For a market that shrank overall, one fund absorbing nearly half a billion in new capital is a concentration signal, not a rounding error. Readers tracking the market in real time can follow live spot and futures prices on Bybit.

Reserve Backing Goes On-Chain

COINOTAG's reading: the three threads — distribution, reserves, and flows — point to tokenized Treasuries and stablecoin infrastructure converging into one stack, a DeFi 2.0 pattern where regulated yield-bearing funds back payment instruments. The companies' official announcement confirms the core terms: WTGXX access through MoonPay's technology, more than 35 million accounts, and a stated plan to use the fund in reserve management from 2026, with possible expansion into additional tokenized funds globally. What is not disclosed matters equally: no timeline for non-US markets, no named stablecoins, and no reserve allocation percentage. The cleanest test is WTGXX's holder base — 887 addresses as of Thursday — and whether it climbs once the integration goes live.