for DOW futures
From âChapter 27 CBOTâ:
http://www.cmegroup.com/rulebook/CBOT/IV/27/27.pdf
27102.B. Trading Unit
The unit of trading shall be $5.00 times the DJIA.
27102.C. Price Increments
The price of mini-sized Dow futures shall be quoted in points. One point equals $5.00. The
minimum price fluctuation shall be one point per contract. Contracts shall not be made on any
other price basis.
And
- One DJIA Index ($10 multiplier) futures contract shall be deemed to be equivalent to two
mini-sized Dow ($5 multiplier) contracts.
- One DJIA Index ($25 multiplier) futures contract shall be deemed to be equivalent to five
mini-sized Dow ($5 multiplier) contracts.
- Two DJIA Index ($25 multiplier) futures contracts shall be deemed to be equivalent to five
DJIA Index ($10 multiplier) futures contracts.
Refer to Rule 559. for requirements concerning
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there is similar specification for DIA (sorry do not know where it is) where DIA should be equal to the DJI index divided by 100 and if it is not it will be adjusted.
The problem is that it is not always the same, especially on intraday charts.