US government scientists have achieved net energy gain in a fusion reaction for the second time. Researchers at the federal Lawrence Livermore National Laboratory in California, who achieved ignition for the first time last year, repeated the breakthrough in an experiment on July 30 that produced a higher energy output than in December, according to three people with knowledge of the preliminary results. The improved result at NIF, coming “only eight months” after the initial breakthrough, was a further sign that the pace of progress was increasing, said one of the people with knowledge of the results. Related: How US Scientists Moved One Step Closer to Dream of Fusion Power and When Will Fusion Be Ready for Prime Time? Watch These Three Numbers and Tech Billionaires Bet on Fusion as Holy Grail for Business
- Date Posted:
- August 7, 2023
The phenomenon of the largest stocks delivering the best returns is new, in our opinion. In fact, from 1994 to 2013, an annually rebalanced portfolio of the largest 5 stocks (“Big 5”) in the US had a comparable return to the entire S&P 500. But both portfolios significantly lagged a large-cap value portfolio (per Ken French). The last 10 years have seen a concentration of returns to the tech sector and to a few companies within that sector. This is both notable and unusual. With the advent of exciting new technologies like AI and superconductors, we think it’s plausible that the top 5 largest companies 10 years from now may look quite different from the top 5 today. In which case, a diversified portfolio would likely serve investors better than a highly concentrated size-defined portfolio.