“Stocks fall on Fed taper discussion.” That’s the gist of what you heard in the media on Wednesday to account for the market’s late-day pullback. There’s always some sort of attempt to explain daily market action. But the reality is that investors simply must take a periodic breather to regroup and retrench, particularly when making an assault on round-number resistance for a major index.

As I and most other observers expected, stocks took the go-signal from Congress and burst through all prior resistance levels with barely any hesitation. And why not?

The intransigence continues in Washington, and it has kept stock market buyers at bay until they get the go signal from Congress. This has left the sellers in control as investor sentiment has temporarily shifted from a buy-the-dip mentality to protect-your-gains and preservation-of-capital.

You know by now that the Fed last week opted not to begin tapering its quantitative easing (i.e., buying of Treasuries and mortgage-backed securities), primarily for two reasons, I believe. First, rapidly rising long-term interest rates were already starting to hurt the recovering housing market (and the resulting wealth effect).

Bond yields have crept back up to near multi-year highs as the bond market appears to be anticipating some measure of tapering in the Fed’s monthly bond-buying program. This undoubtedly has caused some hesitancy among stock investors, too. And then there are the looming debt ceiling and budget battles, as well as concern about slowing corporate earnings growth. And let’s not forget the comparisons to 1987 we are hearing, with Marc Faber (a.k.a., “Dr.

• Stock investors are surveying the view from these lofty heights, with the S&P 500 trying to hold up just below the 1700 level, and they appear to be feeling some vertigo. They are wondering if there will be a catalyst to take stocks higher before Labor Day, or if the dreaded correction is imminent. However, my concern is that investors might be hamstrung by a perceived no-win situation.

Small caps, mid-caps, Financials, Telecom, and Consumer Discretionary were among the market segments that hit new highs this week, even as bearish sentiment and short interest have risen, and there is still plenty of idle cash on the sidelines looking for a home.

Central banks reiterated their commitment to supporting the global economy, and US investors showed their approval. The central banks are clearly prepared to keep the liquidity flowing for now, austerity be damned. Such statements are music to investors’ ears.

Stocks finished the month of April breaking to new highs, with the S&P 500 rising above 1597. But May Day selling put a temporary hold on the bullish celebration that will certainly occur if the S&P 500 can make a clean break above psychological resistance at 1600. Was May Day the start of the usual “Sell in May and go away” practice?

Despite an environment of uninspiring economic reports, stocks have regained their footing once again. Last week, bulls found that they simply couldn’t ignore the Boston bombing like all the other worrisome news, but the quick capture of the perpetrators has removed the domestic terrorism cloud.