Andrew Burton/Getty Images One thousand days and counting. That's how long it's been since the Standard & Poor's 500 index (^GPSC) suffered a correction. That means the S&P 500 hasn't suffered a 10 percent drop from its recent high level mark since October of 2011. What does that mean for investors? Should they take their profits now, or does this long-running bull market have more room to maneuver? One thousand days is a long time for the bull market to run without interruption, but it's not unprecedented, and it doesn't necessarily mean another correction is right around the corner. The bull market of the 1990s ran for 2,553 days without a correction. "When the market does something unusual it is a good idea to be on your guard," said Hugh Johnson, chairman of the Albany, New York-based money management firm Hugh Johnson Advisors. "For the market to have performed as well as it has without a significant correction is pretty unusual," said Johnson, "but I'm not doing anything about it." Most analysts say the 1,000 day mark isn't significant in their fundamental analysis of the market, but they acknowledge that it is psychologically important for investors. The current streak is double the average span without a 10 percent pullback. About one year after the current bull market began in 2009, there was 16 percent correction in 2010. The most recent correction came in 2011, when the market slumped by a steep 19.9 percent, and there was a close call in 2012 when it fell 9.9 percent. According the Stock Trader's Almanac, the average bull market includes two periods of correction, so the current rally isn't unusual in that regard. Many market pros and anxious investors have been anticipating another correction for quite some time, but the market has continued to plow ahead, setting record after record. So far this year, the S&P 500 has rung up 25 record highs, the latest one coming on Thursday. It went into the 3-day weekend just shy of the unprecedented 2,000 level. In addition, the Dow Jones industrial average (^DJI) topped the 17,000 mark for the first time. That means if you invested in an S&P index fund back when the current bull run began in March of 2009 -- and not traded in and out of that position -- you would have nearly tripled your investment. But Howard Silverblatt, senior index analyst at S&P Dow Jones Indices, says the current bull "gets no respect." The financial media -- in print and on TV -- is filled with gloom and doom forecasts. A recent Wall Street Journal headline proclaimed "Some See Clouds Forming," while some market prognosticators warn that a market collapse is just around the corner. They contend the market cycle has run its course, that the market is way overvalued when you examine corporate profits and other key measures, and that unrest in the Middle East, Ukraine and other hot spots could explode. But most forecasters say that unless there is a major economic crisis (which seems very unlikely after the recent string of upbeat economic data) or a geo-political catastrophe, then the current bull market is likely to continue into next year. Jeffrey Hirsch, editor of the Stock Trader's Almanac, studies historical trends in the market. He expects stocks to trade sideways or retreat a bit during the usual "summer doldrums" of July and August, and then resume their advance later this year and into next year. "I don't see the market rolling over until 2016," said Hirsch, noting that presidential election years "tend to be horrible." Johnson, the veteran money manager who has helped guide investors through many bull and bear market cycles, says he is "on guard" but not worried at this point. He says the market hasn't been overrun by widespread optimism. "You don't run for cover, but you can build some defenses into your portfolio." If you're worried about a downturn, he says you can sell economically sensitive stocks like housing, and buy safer issues like utilities and household product stocks. Many analysts even say a market correction, which is inevitable at some point, is healthy for the long term bull to continue. It gets stocks from levels that are seen as slightly overvalued back into a more fairly priced range. And as Johnson notes, that would provide for "more upside potential with better buying opportunities."