Do you mean highest or latest. Unless stock is listed on different exchanges I do not think the short interest varies. For Nasdaq and NY the short interest is calculated as of the 15th of the month and the last business day. This usually takes 2 business days. Most up to date is go to the exchange itself. Yahoo usually has it within a day or so of the exchange posting it.
He hasn't posted in a while though? Oh perhaps he's been busy talking with Mayor Bill Cervenik in Euclid Ohio about investing in that city's lakefront development program with all the money he's made shorting this stock and the stock of other rare earth producers.