A possible concise summary is:
The video is about Graham Stephan, a real estate investor and YouTuber, who shows his 10 million dollar investment portfolio to Kevin O'Leary, a billionaire entrepreneur and TV personality. O'Leary gives him feedback on his real estate, stock market, and startup investments, and praises his discipline and success. He also warns him about the risks of debt and over-concentration in one asset class. They end the video by asking the viewers to destroy the like button, subscribe, and check out Weibull for a free stock.
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