Business Quality
One Up on Wall Street
Peter Lynch's argument that ordinary people have a structural edge Wall Street can't touch, if they actually do the homework.
Peter Lynch's case in One Up on Wall Street is that an amateur investor can spot a great company years before Wall Street does, just by paying attention to their own life, what they buy, where they shop, what their kids are obsessed with.
That edge is real, but Lynch is clear it is a starting point for research, not a substitute for it. Noticing a product is popular tells you where to look. It does not tell you whether the balance sheet can support the story.
Know what you own
Lynch built this into what he called the two-minute drill: explain, in two minutes or less, why you own a stock, what has to go right, and what would make you sell. Know what you own, and know why you own it. If you cannot do that, you do not understand the position, you just own a ticker symbol, and you have not really found out what the company behind it is doing.
A taxonomy for what you find
Lynch's other lasting contribution is sorting companies into categories, slow growers, stalwarts, fast growers, cyclicals, turnarounds, asset plays, because each category gets judged by different standards and sold for different reasons. A slow grower that doubles is a home run. A fast grower that merely doubles might already be slowing down.
In this business, if you are good, you are right six times out of ten. You are never going to be right nine times out of ten. That ratio is the part people skip past. Four out of ten is the cost of admission, not a sign you are doing it wrong.
“Know what you own, and know why you own it.”
“In this business, if you're good, you're right six times out of ten. You're never going to be right nine times out of ten.”
“Behind every stock is a company. Find out what it's doing.”
“Far more money has been lost by investors preparing for corrections, or trying to anticipate corrections, than has been lost in corrections themselves.”