Short interest (the percentage of short sales of stock) on the Nasdaq reached a new record for the week ending October 14th, according to the Wall Street Journal. High short interest is generally bullish, and the article also notes that

short-selling on the New York Stock Exchange in the past month also hit a record, at 8,646,881,921 shares, up 1% in the period.

Hmm... record short interest - so that's why we're going up!