StableStock is an on-chain stock asset platform merging traditional finance with DeFi through stablecoin settlement. It enables users to purchase and trade U.S. stocks with stablecoins via StableBroker, tokenize equities into sStock for on-chain use, and generate yield with stStock through StableVault. Its StableSwap module provides low-slippage swaps between tokenized assets, enhancing liquidity and composability across DeFi. Designed as a TraDeFi infrastructure layer, StableStock empowers developers to build structured products while ensuring institutional-grade security with MPC-backed custody.