Bloomberg TV

The S&P 500 started last week at 1,614, an all-time closing high at the time. And it ended the week at 1,633, the current all-time closing high.

This is notable because at the beginning of the year, the most bullish strategist on Wall Street's sell-side had a 2013 year-end target of 1,615 (See Citi's Tobias Levkovich).

Since the beginning of the year, most of the strategists have scrambled to explain what went wrong and/or revise their forecasts.

Others have been steadfast, arguing that this just means stocks will eventually fall to their targets.

Regardless, any investor who formed a tactical 12-month investment strategy based on these targets has been forced to rethink things.

If there is an upside, anyone who invested based on one of the more bullish forecasts came into the money much sooner than expected.

Here's a round-up of Wall Street's forecasts based on Business Insider's tally effective January 5, 2013.

More From Business Insider

• MARC FABER: 'Something Will Break Very Bad'
  

• 12 Things You Never Knew You Could Do With Your iPad
  

• CHART: The S&P 500 Is Not The US Economy