IVN breaks $12 cdn (8.40 EUR) on the Frankfurt ExchangeTrades as IYAA.F on Frankfurt. (also Berlin, Stuttgard and Munich but almost no volume there)
Usually not very much vol - ie 10k is considered big.
fwiw, traded 11k at 8.41 Eur (early this AM) = $12. Cdn
I know it's minimal vol , but it's amazing how often Frankfurt is an indicator of where the stock opens on the TSX...