If you're trading for alpha, it's crucial you get the data you need, the way you want, from a source you trust. Our high-perf ... ormance API data feeds and trading infrastructure help hedge funds, investment banks, brokers, market makers, financial technology providers, and trading venues perform at their best with quality data delivered the way they want. All from one trusted source. We started as QuantHouse, the market leader in API trading technology. Now as Iress, we're giving our clients an even better way to power their data-driven trading strategies, with API data and trading solutions built for better performance. read more