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Tuesday, February 03, 2009

When others say DJI is price weighted, what does it really mean?

Price weighted implies the index (DJI) moves according to absolute price changes by individual stocks. For example, if A moves from $50 to $51 (2%), and B moves from $11 to $10 (9%), the index will not change. Reason simply being that there is no absolute change in total price ($61).

Hasnt the DJI been this way all along? Why bring this up all of a sudden?

The difference in DJI now is that quite a number of counters went below $10. As a result, the index is dominated by a few expensive counters, making it extremely biased. As seen in the example above, a $1 move for a $50 stock constitutes 2% versus 9% for a stock worth $11.

So what are you trying to tell me?

DJ components are usually replaced when they go below $10 so as to ensure this biased issue do not arise. But these counters still remain partly due to political reasons. If they were to be replaced, DJ will likely return to its volatile state bringing it to lower levels.

Will this trigger the last down wave for Asian markets? Possible...

Technical support for STI @ 1680 followed by 1640.

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