Nasdaq Data Replay Service

Nasdaq has released a new tool for replaying market data, viewing National Best Bid and Offer (NBBO) at any point in time and confirming best execution. The application is written with Adobe's Air . We downloaded it and ran it: data can be recalled for a trading day down the the millisecond resolution for any symbol. Click on the image for more information from Nasdaq to give it a try. Also, screenshot from our download here. ,