SINGAPORE — Asia-Pacific stocks were mixed at the close on Wednesday, as optimism continued to drive U.S. stocks, with the S&P 500 and Nasdaq reaching record highs overnight. Meanwhile, India’s benchmark index hit a record high.

Hong Kong’s Hang Seng index slipped 0.13% to close at 25,693.95, after jumping earlier.

Chinese tech stocks listed in Hong Kong pared morning gains, losing steam by the close after rallying Tuesday. Tencent shares rose 0.55% after jumping 3% earlier. Food delivery giant Meituan was up 2.34%, JD.com popped 5%, while Alibaba lost over 1% reversing morning gains.

The Shanghai composite jumped 0.74% to 3,540.38, and the Shenzhen component rose 0.23% to close at 14,697.50.

On Tuesday, the country’s cybersecurity regulator said Chinese companies that wish to go public — including those planning to list overseas — must comply with two main aspects of a wider set of regulations. Those remarks come as policy uncertainty this summer has essentially halted Chinese listings in the U.S., after a surge in overseas offerings earlier this year.

India’s Sensex index hit a record high of around 56,118 earlier in the morning, according to Refinitiv Eikon data. It has since dropped slightly from that level, but was still trading up about 0.16%.

Elsewhere, the Nikkei 225 in Japan traded nearly flat to close at 27,724.80, while the Topix rose marginally to 1,935.66.

Over in South Korea, the Kospi rose 0.27% to 3,146.81.

In Australia, the S&P/ASX 200 was up 0.39% to close at 7,531.90.

Iron ore prices soared, giving mining stocks a boost. They shot up almost 9% on Tuesday, according to Vivek Dhar, commodities analyst at Commonwealth Bank of Australia.

Mining stocks in Australia ended the day higher. Rio Tinto jumped 2.6%, and Fortescue Metals was up 2.63%. BHP rose 1.25%.

Meanwhile, Covid fears continue to dominate Australia as Sydney’s cases hit a new daily record on Wednesday putting parts of the health system under “severe pressure,” officials said, according to Reuters.

Optimism from the full Food and Drug Administration approval of the Pfizer Covid vaccine continued to lift U.S. markets overnight.

The Dow Jones Industrial Average rose 30.55 points, or less than 0.1%, to 35,366.26. The S&P 500 added 0.1% to a new closing high of 4,486.23. The Nasdaq Composite gained 0.5% to 15,019.80, also a new closing high.

Chinese stocks led the Nasdaq as investors gain more clarity on China’s regulatory outlook and buy shares of names that have taken a beating lately. 

“Markets are still basking in the glow of the Pfizer/BioNTech vaccine having received regulatory approval on Monday, which is paving the way for organisations to mandate vaccines for workers and thus lift vaccination rates higher,” Tapas Strickland, director of economics and markets at the National Australia Bank, wrote in a note.

“China’s delta outbreak also appears to be under control with two consecutive days of no new domestic cases … while the PBoC vowed to boost credit support for smaller businesses and the real economy,” he said.