BTIG, a technical analysis firm, warns that while the S&P 500 index is near historical highs, its internal structure is severely divided, with 60% of its component stocks having fallen more than 20% from their respective all-time highs, thus entering a technical bear market. The current market is almost solely supported by the "Magnificent Seven" tech stocks, and positions are crowded. Should the trend reverse, it could trigger a sustained decline in the S&P 500. BTIG also noted that the semiconductor sector's trajectory resembles the path of the dot-com bubble burst in 2000, anticipating an accelerated decline later this month.