According to @KobeissiLetter, Alphabet (GOOGL) drove 19.4% of the S&P 500’s year-to-date gain, the largest single-stock contribution, source: @KobeissiLetter. Alphabet added about 1.3 trillion in market capitalization this year, source: @KobeissiLetter. Nvidia (NVDA) was the second-largest driver at 16.0% of the index’s YTD advance, aligned with roughly 1.05 trillion in added market cap, source: @KobeissiLetter. The concentration was described as historic by the source, source: @KobeissiLetter. The source did not cite any direct cryptocurrency market linkage, source: @KobeissiLetter.