PhD scientist by training, engineer by inclination. Retired more than 10 years ago as VP of S&P500 company that most have never heard of, but nearly everyone benefits from one or more of their products or services every day. Market investor for more than 40 years. Have tried everything from "invest in what you know" to blue chips to OTC to day trading & back. Have had plenty of losers, a few 100%, but enough winners to net positive in each approach overall. But the real money that I've been lucky enough to gain has come from a few good growing companies that I've held for years. Most financial "experts" would call my portfolio a disaster waiting to happen. But it has worked for me, and for the decade that I've been tracking the relationship, it's managed to outperform the S&P500 while keeping enough in cash to cover 5+ years potential drawdown if needed. My portfolio has rarely had any overlap with that of the Oracle of Omaha. But in addition to being midwesterners, I do have one other thing in common with the world's greatest investor - my favorite holding period is forever.