What is SP500 tokenized stock (xStock) (SPYX)?

Quick Facts

  • Issuer: Backed Finance AG, a Swiss-regulated entity
  • Underlying asset: SPDR S&P 500 ETF Trust (SPY)
  • Blockchains: Solana (SPL) and Ethereum/Arbitrum (ERC-20)
  • Backing: 1:1 collateralized by underlying ETF shares
  • ISIN: CH1436219716
  • Custodian: Regulated third-party custodian holds reserves
  • Trading: Available 24/7 on decentralized and centralized platforms

Introduction

SP500 tokenized stock (xStock), ticker SPYX, is a blockchain-based tracker certificate that mirrors the price of the SPDR S&P 500 ETF Trust. It is issued by Backed Finance, a Swiss-regulated company, and gives eligible crypto-native investors on-chain exposure to the U.S. equity market without requiring a traditional brokerage account.

SPYX is part of the broader xStock product family — a suite of tokenized equities and ETFs covering major U.S. stocks and indices.

History & Background

Backed Finance AG was founded to bridge traditional finance and the blockchain ecosystem by issuing fully collateralized, regulated tokenized securities. The xStock product line was developed to bring well-known financial instruments such as the S&P 500 index to crypto wallets globally.

SPYX was designed from the ground up with regulatory compliance in mind, making it one of the first tokenized ETF products to carry a formal ISIN (CH1436219716) and operate under a structured legal framework.

How SP500 tokenized stock (xStock) Works

Each SPYX token is a tracker certificate — a regulated financial instrument issued on-chain that closely follows the price of the underlying SPDR S&P 500 ETF Trust (SPY). When a token is minted, the corresponding value in real ETF shares is purchased and held by a regulated custodian.

SPYX is issued as both a Solana SPL token and an ERC-20 token on Ethereum and Arbitrum. Token holders can sell their SPYX for stablecoins or crypto at any time, or redeem directly with Backed Finance.

Tokenomics

SPYX does not have a fixed or artificially capped supply. Tokens are minted on demand as eligible investors purchase exposure and burned when redeemed. This keeps the circulating token supply directly linked to real-world demand for the underlying asset.

A small ongoing fee — reflecting costs of the underlying fund — applies to holders, consistent with how traditional ETF expense ratios work.

Circulating supply ? 95,779 SPYX
Total supply ? 95,779 SPYX
Max supply ? -- SPYX
Updated 4d ago

Ecosystem & Use Cases

  • Portfolio diversification: Gain S&P 500 exposure directly from a crypto wallet.
  • DeFi collateral: SPYX can be used across decentralized finance platforms as collateral for lending and borrowing.
  • 24/7 trading: Unlike traditional ETFs, SPYX trades around the clock on-chain.
  • Multi-chain accessibility: Available on Solana, Ethereum, and Arbitrum.

Team, Governance & Community

SPYX is issued and managed by Backed Finance AG, headquartered in Switzerland and operating with regulatory oversight. The product is also issued through Backed Assets (JE) in Jersey, Channel Islands. Community engagement is maintained through the official @xstocksfi Twitter and Telegram channels.

Governance of the product follows a centralized, compliance-first model given its nature as a regulated financial instrument.

Advantages

  • Regulated and compliant: Issued under a formal legal structure with an ISIN.
  • 1:1 asset backing: Each token is fully collateralized by real ETF shares held in custody.
  • Proof of Reserves: On-chain verification of backing is available.
  • Broad accessibility: No brokerage account needed; any eligible crypto wallet can participate.
  • DeFi integration: Usable as collateral and tradable 24/7 in decentralized markets.

Risks & Challenges

  • Eligibility restrictions: SPYX is only available to 'Qualified Investors' as defined in Backed's terms; not open to all retail users.
  • Counterparty risk: Reliance on a centralized custodian to hold and verify underlying shares.
  • Regulatory risk: Changes in financial regulations could affect issuance or redemption.
  • Market tracking: The token price closely mirrors the underlying ETF, meaning it carries full equity market risk.
  • Redemption fees: Redeeming SPYX directly with Backed Finance involves additional fees.

Long-Term Vision

SPYX represents a growing movement to bring real-world assets (RWA) on-chain in a compliant and transparent way. Backed Finance aims to expand the xStock ecosystem to cover more equities and indices, making traditional financial instruments natively accessible within the global crypto and DeFi ecosystem. The long-term goal is to make regulated, on-chain stock exposure a standard component of any crypto portfolio.

Frequently Asked Questions

SPYX tracks the price of the SPDR S&P 500 ETF Trust (SPY), which itself follows the S&P 500 Index of the 500 largest publicly traded U.S. companies. Each SPYX token mirrors the real-time price of this underlying ETF.

SPYX is issued by Backed Finance AG, a Swiss-regulated entity. It is also issued through Backed Assets (JE) in Jersey, Channel Islands, ensuring a structured legal and regulatory framework.

Yes. Each SPYX token is backed 1:1 by shares of the underlying SPDR S&P 500 ETF Trust held by a regulated third-party custodian. Proof of Reserves is available to verify this backing on-chain.

SPYX is issued as a Solana SPL token and as an ERC-20 token on both Ethereum and Arbitrum, making it accessible across multiple blockchain ecosystems.

SPYX is restricted to eligible 'Qualified Investors' as defined in Backed Finance's terms and services. It is not directly offered to the general public and must be purchased through licensed entities.

SPYX can be used as collateral on decentralized lending and borrowing platforms, traded for stablecoins or other crypto assets 24/7, and integrated into broader DeFi strategies.

Token holders can sell SPYX on supported exchanges for stablecoins or crypto at any time, or redeem directly with Backed Finance for the underlying value. Direct redemption with Backed Finance involves an additional fee.

An ongoing annual fee of approximately 0.0945% applies, reflecting the actual cost of the underlying SPDR S&P 500 ETF Trust fund. Additional fees may apply upon direct redemption with Backed Finance.