I just stumbled on this article by Mark Hulbert from last week. He talks about an indicator that actually signaled 3 weeks ago. Historically the indicator was right 12 out of 12 times and predicts +20% gain in a year!
Right now the market is about at the level when the signal took place on Apr-05 with SPX=1,187.44. So, you may still cast your prediction, we will seal it into a time capsule and you will be able to brag about it in a year.
"...What I have in mind is a rare buy signal that was generated a couple of weeks ago by a trend-following indicator with a good long-term record. Prior to the recent buy signal, there had been only 12 of them since 1967.
...The indicator in question comes from Ned Davis Research, the quantitative research firm. It generates a buy signal whenever the percentage of common stocks trading above their 50-day moving averages rises above 90%. Davis refers to such events as a "breadth thrust."
The recent buy signal, according to this indicator, occurred on April 5. The other buy signals over the last year occurred on May 4 and Sep. 16 of last year.
How has the stock market performed following past buy signals? Quite well, according to Davis' calculations
Right now the market is about at the level when the signal took place on Apr-05 with SPX=1,187.44. So, you may still cast your prediction, we will seal it into a time capsule and you will be able to brag about it in a year.

"...What I have in mind is a rare buy signal that was generated a couple of weeks ago by a trend-following indicator with a good long-term record. Prior to the recent buy signal, there had been only 12 of them since 1967.
...The indicator in question comes from Ned Davis Research, the quantitative research firm. It generates a buy signal whenever the percentage of common stocks trading above their 50-day moving averages rises above 90%. Davis refers to such events as a "breadth thrust."
The recent buy signal, according to this indicator, occurred on April 5. The other buy signals over the last year occurred on May 4 and Sep. 16 of last year.
How has the stock market performed following past buy signals? Quite well, according to Davis' calculations