Is it possible to set up an automated strategy which works on, and is activated by, one instrument, say the cash Dow (^DJIA), but which places its trades on another, say the ES?
(The rationale behind this is that the Dow and the ES move very similarly, but each 'tick' in the ES is is roughly equal to 250 in the Dow as represented on the NinjaTrader charts, thus affording much greater precision when analysing the Dow.)
Thanks for letting me know.

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