On the gamestop thing, this isn't a bunch of redditors that are manipulating the price. Institutional ownership is ~60% of total float, leaving 30-40% of actual float to trade, causing a liquidity issue when 130% is shorted. Naked shorting is what has led to this situation. Smart people identified this and jumped on the situation.
Cohen and his Chewy brethren have a vision to turn Gamestop into the epicenter of e-gaming, an under served market segment. This, plus some promising financials, along with a bit of social media has created the perfect storm.
As for 2021 in general, I'm expecting SPACs and raw materials to perform above market.