Talk:Vancouver Stock Exchange

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Rounding error issue makes no sense

Although the rounding error issue affecting the index value seems to have been transcribed correctly from original sources, it doesn't make mathematical sense as stated. Indexes are calculated based on the prices (and sometimes trading volume) of designated stocks, not iteratively based on past values of the index. I don't see how rounding errors can accumulate or compound, if they're based on fresh pricing data each time. It makes me wonder if someone has actually gotten away with a Superman III fraud.

Poslfit (talk) 16:18, 14 March 2023 (UTC)[reply]

I've finally tracked down the sources provided and none of them seem particularly convincing. Though if the sources are to be believed, they came up with their own index without consulting other exchanges to perhaps they did just have a bad idea. I'd like to find more information if possible. What I can say for certain is that given the current sources, it has nothing to do with floating point even though it's constantly cited (to me at least) as an example of why you don't use floating point for storing monetary values. Even if I cannot find better sources on what actually happened, I'd like to improve that section. — Bryce Michael Wilson (Talk) 14:01, 12 September 2023 (UTC)[reply]