24 hour / after hours US equity price data

Hello, basically there is no such thing as 24 hour trading of US equities. some markets have premarket and aftermarket hours (usually between 4am - 9:30am and 4pm - 6:30pm ET time). There is also no such things as 30-minute price data, as after market usually have quite low volume and if someone executed an order to buy/sell 1-2 shares above/below closing price - it will still be reflected in graph and will skew your logic. you have to factor volume into your data. I have some sources that I can scrape for after market data so if you're interested - let me know

Hello, I can write a php code for you to collect data from your desires website and in your desires format to store into the database. as well as we can set that script to collect data with specific tie intervals. Please let me know the website from where you want to collect data. so that i can give you the time-frame for this project. Have a nice day. Thanks, Muhammad Jawad

Hello, I'm highly interested in this project of yours and believe I will be on of the best candidates to assist you in your bid to gather this information. I've been on the site and this is something I can do with just little guidance in terms of which stock price I should collect if you want a specific bunch. I have a few years experience working as a Customer care representative for Claro and data entry experience working for Windalco. I will be available to work for you as many hours as you may require. Not to sound cliché but hard working, determined and opened to criticism are just a few of the many qualities that you will receive if you were to hire me as your Data entry clerk. I am able to multitask which will allow me to complete more tasks in a shorter given time, meaning more work that will cost you less. I am open to being in constant communication by phone, email or both, giving you access to live updates as we go along. This allows personalization as you may give your input. With that being said. I can work without supervision and from my own initiative to undertake whatever task given to me. I am versed in Microsoft Office (Excel, Word and PowerPoint) so all tasks involving these software will be done in the best format possible. I hope this short proposal about myself helps you to get some insight into what I have to offer. Thank you

We're experts in developing and deploying automated trading systems, algorithmic trading strategies and online investment tools for over 15+ years. We understand trading and talk the trader's language. We are familiar with all scripting languages, C#, C/C++, Javascript and HTML5. Database experts in time-series and efficient market-data management in Microsoft SQL and MySQL. Deep knowledge of trading systems and back-office trading processing including; Real-time and historical market-data direct from exchange and normalized, We have a proximity-hosted algorithmic trading system where we record all equities market-data including after hours. We currently cut-off at 6PM, but could setup to collect everything if that's what you need and provide an update daily. Also, we have access to other data repositories that might contain historical archives that we could purchase for a one-time fee. I'd love the opportunity to understand your exact requirements and provide a comprehensive cost / time estimate.

DataStreamX is a marketplace for real-time and historic data. We have multiple data providers providing EOD equity information that you can subscribe to. I have reached out to the different providers to get the specific data you are looking for. I will come back once I get the exact pricing. Are you looking for NYSE only? What other exchanges would you like?