If you follow the U.S. stock market, you've definitely heard of Peter Tuchman. As the most well-known stockbroker on the New York Stock Exchange (NYSE), he has over 30 years of experience on Wall Street. Every day from 9 a.m. to 4 p.m., Peter Tuchman moves through the trading floor.

Interestingly, despite decades of working in the financial markets, his net worth is only about $5 million, which contrasts sharply with his industry fame. However, his true value doesn't lie in personal wealth but in the fact that he has become a "barometer" of the U.S. stock market—his facial expressions and body language often reflect the overall market sentiment, serving as a window for many investors to observe market trends.