American investors buying Canadian interlisted stocks (listed on both the NYSE & the TSX), such as MDS Inc.,sometimes might neglect to examine the stock's Canadian chart in Cdn. dollar denomination.

Especially for those who pay attention to chart patterns, it's important to gauge support/resistance levels, and technical indicators of the stock, by placing priority on MDS.TO chart patterns, NOT MDZ patterns!

Because the MDZ chart, being $USD denominated has currency fluctuation distortion built into it. It reflects the up and down movement of the $CAD as much as it reflects the movement of the stock itself!

For example, the MDZ chart might show the stock breaking below an important support level, a prior low say. But what actually caused the apparent break-out down could simply be that the $CAD lost value that day, taking down the stock price IN $USD TERMS only. A TSX chart of the same stock in $CAD terms for the same day, could show the stock UP on the day it's DOWN in $USD terms!

So, $USD charts of Cdn. (or other international) stocks are "tainted" by currency distortion, and can easily give false technical signals on the stock.

If you want to see accurate technical signals, go to the chart showing the stock in its original $CAD denomination,NOT the $USD version.

It's useful for Americans in Cdn. stocks to keep an eye on CAD currency trends too, but one best does that by viewing a chart of the CAD itself, instead of a Cdn. stock listed in $USD denomination.

I was playing this stock as a swing trade lately. It's been outperforming the markets beautifully, including rising on down mkt. days! But no stock can defy gravity forever, and when today was shaping up to be another down day, and MDS showed signs of losing MO, although still up on the day this AM, I sold into strength just a moment before it plunged by 2% within mins.! Phew.
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