SPY for long term investment

I only have a few options for long term investment. Only choose those have a very good uptrend.

1. $SPDR S&P 500 ETF (SPY.US)$
This one never been go wrong. Just buy on the dip whenever you have money. Keep it for long term.

2. $Microsoft (MSFT.US)$
As you can see. This is one of most stable stocks with a very good uptrend.

Tips : Only buy on the dip and put trailing stop 1.5% for SPY because this is daily range for SPY.
As for MSFT that has daily range 2.4%, I will put trailing stop 2%.

You'll be surprised with the result when you're using this method.