No. I would not put 50%+ of my portfolio into one stock, no matter how strong my conviction is. Harvard’s SpaceX position at about 52% of its disclosed 13F portfolio is definitely the biggest surprise, although that 13F represents only part of Harvard’s much larger endowment.
For my “mini-Harvard” portfolio, I would pick:
🚀 SpaceX: long-term exposure to space, Starlink and infrastructure
🧠 TSMC: the semiconductor backbone behind the AI boom
🪙 Gold: diversification and a defensive hedge
I prefer concentration within reason. A few high-conviction positions can outperform, but 50%+ in one company creates unnecessary single-company risk. Diversification may cap some upside, but it also keeps one bad thesis from wrecking the entire portfolio.
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