man u gootta whatch these treds. bottoms fall out of bull markets at any time. you also need to examine the charts. Need to look where the next support level is in the market should the bottom fall out of it. If it is low enough. It could hand u your ass on a silver fucking platter if it did go down and touch those support levels. While still being in the over all long term bullish trend.
just be careful, this would apply mostly to swing trades. not really long term funds unless u were planning to cash out sometime soon.