SizeProp is a crypto-native proprietary trading firm that funds traders to trade perpetual futures without depositing their own capital. Traders pay a one-time evaluation fee, pass a challenge against defined drawdown and profit-target rules, and receive a funded account of up to $100,000. The platform sources order books from Hyperliquid and Bybit and offers perpetuals across crypto, equities, commodities, and forex via Trade.xyz. Funded traders keep up to 95% of profits, paid same-day in USDT.