The reason the closing price was down about 6 cents on the US ticker SELSF is because the last trade made on pink sheets at 2:16 PM EST was at price of 0.6881, so in the last hour and 44 min. there supposedly weren't any pink sheet trades (SELSF) to mirror the trades for SLI on the TSX that were made in the last hour and 44 min. As soon as a trade is made Monday on pink sheets, it's price (SELSF) will reflect SLI's price again.