![](/profile/get-photo.asp?memberid=20&type=profile&rnd=581) Centre county Pennsylvania, USA | Aug 18, 2017 AMACD market timer for SPY (S&P500 index) reports:
conditional probability of SPY long = 0.25 ,
conditional probability of SPY short = 0.34 ,
where probability is conditioned on most recent full year of performance.
Conditional probabilities below 0.5 are (very) risky. That's saying that S&P500 index is not a reasonable candidate for long or short investment at this juncture in time. |