Quote from NihabaAshi:
Most brokers have different symbols from one broker to the next broker for the DAX futures. Simply, there's no international standard. It's only prudent to watch both DAX futures and Emini ES futures together if your strategy depends on it. Thus, I've learned if someone ask that question the way you just did...most likely it's not prudent for them to watch both because they're not using a strategy that's dependent upon both. Yet, if you're going to design a correlation strategy for trading the DAX futures...I would start first with the DAX Index, DJ EuroStoxx50 futures, FTSE-100 futures and CAC-40 futures prior to using the Emini ES futures. However, if you're going to design a correlation strategy for trading the Emini ES futures...I would start first with the S&P 500 Index, CME Emini NQ futures, mini-sized Dow YM futures and ICE Russell Emini TF futures prior to using the DAX futures.
There's a few old threads here at ET (you got to use ET search link) that gets into some correlation stuff used by different traders. However, I was under the impression that some of those correlation traders were doing some sort'uv spread trading.
Mark