While I very much like your rationale D&D I checked back for May 28th which is Memorial Day in the US when US markets are also closed while Canadian trading is open.
http://business.nasdaq.com/trade/US-Options/Holiday-Trading-Hours.html
On that day this year RVX traded 183,445 shares according to stockwatch:
https://www.stockwatch.com/Quote/Detail.aspx?snapshot=SX&symbol=RVX®ion=C
Not a perfect comparison as this is obviously a big holiday week in both the US and Canada. This is the lowest volume we've seen since back in April. Hopefully we get back to more robust trading with volumes of at least 100K for the rest of the week and going forward.
