Peter Lynch · 1995 · Simon & Schuster
Learn to Earn — Chapter 5: The Basics of Investing
Lynch's fifth chapter in Learn to Earn is the beginner's introduction to the principles of investing, written for the young investor who is starting his working lifetime. The chapter begins with the principle of saving: the investor who would compound capital must first save capital, and the saving is the disciplined practice by which the investor converts a portion of his income into the capital that will compound. Lynch's instruction is that the saving is the precondition of the investment, and that the investor who does not save will have no capital to compound, regardless of the brilliance of the investment decisions he would have made. The chapter's first principle is, in this sense, the principle of saving as the disciplined precondition of the investment practice the rest of the chapter develops, and the investor who skips the saving principle is the investor who will have no capital to compound regardless of his investment decisions. Lynch's second principle is the principle of compounding: the investor who has saved capital must let the capital compound, and the compounding is the mathematics by which the saved capital grows over the long horizon. The mathematics of compounding produces the result that the investor who starts early and saves regularly will, over a working lifetime, see the saved capital grow to many times the sum of the contributions. The investor who starts late, or who interrupts the compounding by selling, will see the saved capital grow to a smaller multiple. Lynch's instruction is that the compounding is the structural wage for the discipline of holding, and that the investor who interrupts the compounding gives up the structural wage the long horizon would have produced. The compounding is, in this sense, the structural wage for the discipline of holding, and the wage is the cumulative return the long horizon produces for the investor who lets the compounding run uninterrupted. Lynch's third principle is the principle of the boring portfolio: the investor who would compound capital should hold a diversified portfolio of common stocks, should rebalance the portfolio on a schedule, and should resist the temptation to chase the year's hottest sector. The boring portfolio's return, in Lynch's account, will roughly match the market's long-run return, and the market's long-run return is the structural wage for the discipline of the boring portfolio. The investor who chases the year's hottest sector will, over time, underperform the boring portfolio, because the year's hottest sector is the sector the market has already re-rated and the re-rating has reduced the sector's subsequent return. The fifth chapter is, in this sense, the document in which Lynch's argument for the beginner investor's disciplined practice is most directly recorded, and the document on which the book's overall argument for the beginner's participation in the market rests.