上海黃金交易所黃金T+D 7月28日（週二）早盤盤初下跌1.02%報882.99元/克； 上海黃金交易所白銀T+D 7月28日（週二）早盤盤初下跌2.56%報14095.0元/千克。

On Monday, the cost of default protection on NVIDIA (NVDA.O) debt recorded its largest single-day intraday increase. Reports that NVIDIA is negotiating AI infrastructure deals exceeding $750bn prompted market concern over added leverage. ICE Data Services showed NVIDIA's five-year CDS widened about 14bps intraday on Monday, the biggest move since those swaps began trading in November.

Financial Times reports NVIDIA has agreed to invest about $5bln in Safe Superintelligence, an AI startup led by OpenAI co‑founder Ilya Sutskever, and will provide its latest Vera Rubin hardware as part of a "long-term partnership." The companies announced the deal on Monday; people familiar said the $5bln commitment is typically milestone-dependent. Both parties declined to disclose financial terms, calling the investment "substantial." Safe Superintelligence said the funding will help it build the compute to exploit a research breakthrough it claims and increase available compute tenfold within 12 months.