question on indeces

[guppy]

take $XOI as an example


where do you get the data from ? i assume AMEX sends it out ? do they provide the volume information as well or is that filler generated by esignal ?

the volume appears to represent the number of updates of the index in the selected time increment

wouldnt it be more useful to calculate the traded volume in the underlying securities in the index for the selected time increment ?

just a thought

[eSignal_ShaheedM]

Hi there,

Thanks for your post.

I believe we source this data from AMEX

Per information on www.amex.com

"...Amex Oil Index
The Amex Oil Index (XOI) is a price-weighted index designed to measure the performance of the oil industry through changes in the prices of a cross section of widely-held corporations involved in the exploration, production, and development of petroleum. The XOI Index was established with a benchmark value of 125.00 on August 27, 1984...

Index Components as of: 06/27/08
Company Name Symbol % Weighting

Hess Corp HES 13.17%
Chevron Corp CVX 10.14%
Conocophillips COP 9.50%
Occidental Petroleum OXY 9.17%
Exxon Mobil XOM 8.97%
Total 'b' Ads TOT 8.65%
Royal Dutch Shell PLC ADS RDSa 8.30%
Anadarko Petroleum APC 7.71%
Bp p.l.c. Ads BP 7.02%
Marathon Oil MRO 5.31%
Valero Energy VLO 4.14%
Repsol Ypf S.a.ads REP 4.06%
Sunoco Inc SUN 3.88%
..."

Please contact AMEX for more information about their index.

[eSignal_ToddI]

From our Knowledge Base:
Data Indicies

Why is there no volume on most indices?

For the majority of indices, volume information either doesn't exist or is too intensive to calculate. There are a few exceptions, however. Examples include $DJ or $INDU, for which the CBOT is providing volume data. In the case of symbols like $TICK or $TRIN, the volume histogram in a chart represents tick volume or the number of updates per interval.