Peter Lynch had not simply won on Wall Street. He humiliated it, year by year, year by year, thirteen years of silent, moving, deceitful humiliation. He transformed the Magellan Fund by bringing 18 million dollars to 14 billion dollars in the period that spanned 1977 to 1990, making him the greatest mutual fund manager in American financial history. The most remarkable part? His practices were not actionable, perplexing, or hidden. They were reasonable, repeatable, and accessible to any average American who was interested in the surrounding world.
Shop, Then Invest

The most radical thought of Lynch was also the simplest – the most effective investment research is conducted in real life rather than on a trading floor. It is what you cannot resist purchasing, the queue at the doorway to the restaurant, the shop which in due course opens in every single mall in America: these are the clues that most Wall Street analysts are too occupied to pay attention to.
Hunt Ten-Baggers

Lynch showed America what was called a ten-bagger, a stock that would get you ten times your money. Algorithms and insider jobs did not lead him to them. He discovered them by delving into small firms that had been shunned, had a cult-like base of customers, a good momentum of earnings, and a long and clear growth runway that could not be expected by the general market.
Tell the Story

Lynch had a no-fly rule – you can not possess a stock unless you can tell him or her in two minutes why that will make a fortune. He referred to it as the story of the corporation. No story, no position. This one-filtered filter killed the spur-of-the-moment, emotionally inclined buying that just kills the long-term portfolio returns of the average American investor year after year.
Tune Out Wall Street

As all financial pundits on TV were anticipating the beginning of recessions, rate trends, and market meltdowns, Lynch was quietly disregarding all that. He openly and on numerous occasions claimed that money lost in preparation for market corrections has been much more than the corrections. The fundamentals of the individual company, he maintained, were the only prediction to be relied upon.
Label Everything

Lynch divided all his stocks into one of the six different categories he had, such as slow growers, stalwarts, fast growers, cyclicals, turnarounds, and asset plays. Both categories had varying expectations and a variety of exit strategies.Being specific about your possessions and reasons for them distinguishes investing from costly speculation.
PEG Ratio is Everything

PEG ratio, being the price-earnings ratio over the growth rate, was popularised by Lynch as the most honest and straightforward measure of whether a stock is really cheap or massively overstated. A PEG of less than one was an indication of an underperforming growth company. This one calculation enabled Lynch to discover the prospects that the market had incorrectly priced before they became the knowledge of the rest of America.
Turn Every Rock

Lynch had a reputation for visiting the company’s physical, strolling the store floors, questioning managers, analyzing competitors, and, with a true obsession, perusing the annual reports, footnotes, and so forth. The investor doing the most legwork will find opportunities that armchair investors and overconfident analysts often overlook.
Adhere to Fidelity to the Institutions

The reason the smart money had already come is that high institutional ownership implies the easily accessible gains were exhausted on a large scale. The presence of the opportunity was prepared by the low level of institutional ownership in a structurally robust company. Lynch used institutional data more as a guide to identify areas to avoid until he found a crowd-free spot.
Hold Through the Noise

Lynch has seen good stocks ruined temporarily by bad press coverage, market craze, and a few, although the earnings are actually worse than expected, and he has retained his positions, believing in his research that the business had not failed. He said that when the investor sells a fundamentally strong company in a passing storm, then he is basically paying an extremely high price for impatience.
You Have the Edge

Lynch’s argument is powerful yet overlooked, as the average American investor can compete with Wall Street professionals. They are actually freer. None of the committees, no mandates, no institutional restrictions. An informed and independent thinker can outperform professionals managing billions by investing long-term.