For more than a year, since deepseek, I am out of AI trade. It is extremely difficult to beat the market, even stay with the market, if you are not aligned with the dominant current theme. Everyday you see folks become millionaire by owning $MU, $SNDK, $DELL, etc.
You can say to yourself, you are sticking to your themes, your plan, etc. But when you start trailing the market, you start questioning everything.
My experience is most people sell too soon. You do better to hold on to winners as long as they perform. When they begin to slow down or do a dip they should get your attention. Is it time to take profits? That’s a personal decision. How confident are you the company will continue to prosper?
I think much depends on earnings growth. Nervous nellies can anticipate a crash at anytime but that is rare. Usually you get months to decide once prices peak and a downtrend begins. Stocks with modest PEs remain attractive. Very different from those who invest in stocks anticipating future earnings growth.
Yes, you can do very well when you are tuned into the right strategy. But that is not cast in concrete. You can respond to changes in the msrket.
From
Everytime you think, you want to step aside, it feels frothy, some studies like this questions your “gut feel”. These kind of studies cannot be ignored. Still your mind cannot comprehend or accept, SPY $780, $830, $870, or $930.
There is a reason, why you should ride the rally and only sell on decline, or as someone very colorfully said, “shoot them on their back” 
Wells Fargo increased the YE target to
The earnings are accelerating and now the analysts forecasts are moving up.. $WFC SPY earnings forecast are…
Of course, thee is mid-term seasonality, but almost all macro analysts I track/ follow have turned bullish with an exception of BAC (Savita Subramanian).
