Three Underlying Paths for CEX 'US Stocks': Real Equity or Synthetic Exposure?
When traders buy S&P 500 constituents or FAANG stocks on centralized exchanges (CEXs), they are not directly holding the underlying shares. Three main mechanisms exist: traditional API integration (CEX buys real shares through broker but holds them in nominee capacity); tokenization (mapping equities into on-chain tokens); and perpetual swaps (tracking price via derivative contracts). Among these, tokenization is the most complex and prone to rights mismatch.
The 5-Layer Architecture: Extinguished Voting Rights, Contractualized Dividends, and Lost SIPC Protection
Tokenized 'stocks' typically pass through five layers: underlying real equities → custodian (e.g., Alpaca Securities) → token issuer (synthetic asset protocol) → on-chain token → user wallet. Each layer dilutes rights. First, voting rights vanish because the custodian, not the end user, is the shareholder of record. Second, dividends are no longer paid directly to users but are instead distributed via smart contract or protocol cash flows ('contractualization'), creating risk of withholding or delay. Most critically, SIPC (Securities Investor Protection Corporation) insurance only covers direct customers of registered broker-dealers. CEX users are not covered. If the custodian broker fails, the user's claim against the tokenized asset becomes worthless.
Alpaca's 94% Clearing Monopoly: Liquidity Fragmentation and Risk Transference
Data reveals that Alpaca Securities controls 94% of the clearing and custody for CEX-traded tokenized US stocks. This acute concentration means that any disruption at Alpaca — regulatory penalty, system outage, or client run — triggers a liquidity vacuum across all CEXs relying on it. CEXs typically outsource clearing, settlement, and custody to Alpaca while operating only as order-matching platforms. However, the risks cascade through the tokenization chain directly to retail users. What users hold is effectively a credit-contract on Alpaca and the CEX, not actual equity ownership in the listed company.
In summary, the 'US stocks' on CEXs offer price exposure but strip property rights and regulatory protections. The dominance of a single custodian, Alpaca, creates a systemic point of failure, exposing users to counterparty risk far beyond what traditional equity markets entail.