A seasonality trade

Different sectors may follow different patterns. Seasonality is one type common to certain sectors. I found one stock which has clearly shown such a seasonality. The stock is China Petroleum & Chemical Corp (NYSE: SNP). See below its chart. In the past 5 years, SNP has, like a clock, always significantly gone up starting around mid-year and started to come down early next year. I know currently it is rather scary to think about about Chinese stocks but given how much the Chinese market has crashed, it is actually the time with much less risk. In addition, SNP is in a business with a strong demand internally in China and it pays a high dividend at 6.3%. If you have the gut, buying SNP now and collecting a dividend in Sep and planning to sell it around Jan/Feb will likely be a profitable trade.