Corporate insiders sold a record $77.6 billion worth of shares in the first six months of 2026, marking a 20% rise compared to the same period of 2025. Insider sales have nearly hit the highest volumes seen in over 20 years.
Insider Activity and Market Context
The selling outweighed buying by an 11-to-1 ratio; insiders purchased just $6.9 billion in stock during the same timeframe. This selling surge is fueled by concerns over stock valuations, geopolitical uncertainties, and doubts about the sustainability of heavy artificial intelligence investments. According to The Kobeissi Letter, corporate insiders are securing historic profits amid these conditions.
Despite this sell-off, Big Tech maintains its dominance. The Technology, Media, and Telecom (TMT) sector now represents 49% of the S&P 500 market capitalization, an all-time high. This sector's weight is approximately nine percentage points above the peak during the 2000 Dot-Com bubble and about 20 points above the late 1960s peak.
The tech sector's size surpasses the combined weight of the financials, cyclicals, and defensives sectors. For comparison, during the 2008 financial crisis, the TMT sector accounted for about 19% of the S&P 500. The current market is more reliant on technology than ever before. As of the close on Friday, the S&P 500 index stands at 7,457.
This material is informational and not financial advice.
