IQFeed is a data service from DTN, a Tier 1 provider which controls and operates its own Ticker plant and data centers (and doesn't rely on third-party facilities).
Specially designed for I/RT users relying on a brokerage feed (Rithmic, CQG,..) as real time data source, DTN Market Access is a historical data backfill service marketed by Linn Software.
For 47 years, the Interactive Brokers group has been building electronic access trading technology that delivers real advantages to traders, investors and institutions...
