Jeremy Grantham, co-founder and long-term investment strategist of GMO, has spent his career studying market trends and warning against the dangers of short-term investing. In his memoir, The Making of a PermaBear: The Perils of Long-Term Investing in a Short-Term World, Grantham shares his personal experiences, including his early days as a 'gunslinging nitwit' in the investment business.
Grantham recounts his time in the late 1960s, when he joined a group of young investors in Boston, eager to make quick profits. He invested in two companies, American Raceways and a firm developing a stock market monitor, but both ended in failure. The losses taught Grantham a valuable lesson: the importance of patience and thorough research.
After his experiences, Grantham turned his attention to studying market history and constructed an index of small-cap stocks, which he believed would outperform large-cap stocks. His research showed that small-cap stocks had historically dominated the market in multi-year cycles, and he invested 100% of GMO's money in small caps, a strategy that was unusual at the time.
Grantham's story serves as a cautionary tale for investors, highlighting the dangers of getting caught up in short-term market trends. As he notes, 'human nature always ends up in these situations.' His memoir offers valuable insights for anyone looking to navigate the complexities of the stock market.