Pre-market futures are up at this hour, but on a downward trajectory. Market participants purged a bit yesterday of new all-time-high closes Wednesday on the S&P 500 and the Nasdaq, but remain near those strong levels. We’re devoid of catalysts until Q3 earnings season builds next week, when the Big Banks begin reporting on Tuesday morning.Among these will be, of course, JPMorgan (JPM) and Citigroup ((C) , alongside Wells Fargo ((WFC) and Goldman Sachs ((GS) . Right there we're talking a big chunk of market ...