Lone Pine Capital, a hedge fund managing approximately $19 billion, saw its flagship Cypress fund experience a significant decline in performance. After achieving a 44% gain in the first half of the year, the fund's year-to-date return dropped to just 0.6% by the end of September.
The primary cause of the downturn was a sharp sell-off in AI and technology stocks during July, which resulted in a nearly 25% loss for the fund that month. Geopolitical tensions involving Iran and rising oil prices further exacerbated the market volatility.
The fund's portfolio was heavily concentrated in AI-related assets, with five of its seven largest US stock positions acquired in the second quarter. These holdings accounted for roughly 40% of its US portfolio. The largest position, Nebius Group, saw its share price fall by nearly one-third in July.
Other major holdings, including Applied Materials, also suffered significant declines, with the chipmaking equipment manufacturer dropping 29%. Additionally, the fund's short-selling strategies failed to generate profits during this period, contributing to the overall reduction in returns.
Market participants are currently divided on AI investments. While some investors like Leopold Aschenbrenner have re-entered the sector, others, such as Michael Burry, are betting against specific AI-linked companies by holding put options on stocks like Nebius Group.






