A monthly supply imbalance was created last October 2018 around $218 per share. It has taken Apple nine months since that imbalances was initially created last year. That monthly is very strong, Apple Inc dropped like 35% in about three months. Price is up there again and trying to replicate what it did the first time.
Ignoring or being unaware of these imbalances will cause you a lot of headache trying to wonder why you are losing your long positions on Apple Inc stock. It has nothing to do with unpredictable Donald Trump's personal battle with China and the billion dollars that is costing both parties, it's as simple as having a very strong supply imbalance created in the monthly chart.
Doing this kind longer term on Apple Inc stock can also help you if you are intraday or short term trader. As a day trader, if you are away of these bigger timeframe imbalances, you could start looking to sell short Apple stock using short term stock strategies and even long put options and spreads.