桥水四季度持仓曝光，英伟达大幅增持54%重回第三大重仓，黄金板块同步加码

Group 1 - The core viewpoint of the news is that Bridgewater, the world's largest hedge fund, made significant adjustments to its positions in AI-related stocks and gold during the fourth quarter of 2022, as reported in its 13F filing with the SEC [1][2]. - Bridgewater's total holdings at the end of the fourth quarter amounted to approximately $27.4 billion, reflecting a 7.5% increase from the previous quarter's $25.5 billion [1]. - The fund added 191 new positions, increased holdings in 450 stocks, reduced positions in 395 stocks, and completely exited 165 positions during the quarter [1]. Group 2 - In the AI sector, Bridgewater notably increased its stake in NVIDIA by 1.35 million shares, raising its total from 2.51 million shares to 3.87 million shares, a 54% increase, making it the third-largest holding [1]. - Amazon also saw a significant increase in holdings, with shares rising from 1.12 million to 1.95 million, a growth of approximately 73% [1]. - In the gold sector, Bridgewater increased its position in Newmont Corporation, a leading gold producer, which was among the top five purchases for the quarter [1]. Group 3 - The top ten holdings included SPDR S&P 500 ETF and iShares S&P 500 ETF in the first two positions, with NVIDIA in third, followed by Lam Research, ServiceNow, Google, Microsoft, Amazon, Adobe, and GE Vernova [2]. - Notably, several stocks in the top ten holdings, including Lam Research, ServiceNow, Google, and Microsoft, experienced varying degrees of reduction in positions [2]. - The largest reductions in positions for the quarter were seen in Uber, Fiserv, Google, META, and Microsoft [2].