Trading against the trend is also called shorting , in the stock market it is also known as stock shorting , to go against the trend and sometimes it pays off since you get all of the money of the people who want it but it's a high risk game so your predictions must be strong,
Im not knowledgeable with stock market and i do not do trade against with the market. I am following it and taking shorts also with that its not against either you make swing trade or hodler after buying my humble opinion only.