If/when SPY $SPDR S&P 500 ETF (SPY.US)$ falls no stock will ...

If/when SPY $SPDR S&P 500 ETF(SPY.US)$ falls no stock will be spared.

Don't fool yourself that buying "good undervalued companies" will save you from a 20% correction. Solid companies will get back on track (and faster than shitty hyper speculative ones) but no ticker will be spared when we go tits up.