alpacahq / Alpaca-API

The Alpaca API is a developer interface for trading operations and market data reception through the Alpaca platform.
https://alpaca.markets/
142 stars 13 forks source link

Poor data quality of Market Data #67

Closed ytx1991 closed 5 years ago

ytx1991 commented 5 years ago

Hi, I'm developing a trading bot based on Alpaca and found the data quality of IEX market data is really poor. For example, If I request 200 data points for 2964 stocks in NASDAQ by calling https://data.alpaca.markets/v1/bars/5Min API. Only 57 of them will return continuous data points. Most of them will miss some data points. This is total useless for me.