Cook said that he strongly believes in freedom.
Cook's high-profile appearance Sunday at the government-organized World Internet Conference drew comments from activists and USA politicians who say Apple should do more to push back against Chinese internet restrictions.
Other tech stocks, such as Alphabet's Google, Amazon, Facebook and Snap, were up on Wednesday.
FILE PHOTO: A attendee uses a new iPhone X during a presentation for the media in Beijing, China October 31, 2017.
Apple received criticism for pulling virtual private network and messaging apps from the Chinese store due to pressure from the country's regulators.
US Sen. Patrick Leahy said that Apple did not do enough to promote free expression in China.
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Yet Cook expressed confidence that some of the apps will eventually be reinstated, according to reports from Reuters.
"My hope over time is that some of the things, the couple of things that's [sic] been pulled, come back".
AROUND 1.8 million tech developers in China use Apples Inc.'s platform, earning a total of CNY112 (US$16.93 billion), according to Apple's chief executive, Tim Cook, speaking at a cybersecurity forum in China on Sunday.
China is the company's third-largest region by sales, though recently it has lost some market share to high-end handsets from local rivals.
Recently, Apple had a disagreement with Tencent Holdings, China's largest social network and gaming company, after Tencent chose to release apps within its own app ecosystem, completely circumventing the Apple store.
Earlier this year, Apple said that developers had earned roughly $70 billion (£52 billion) in total revenue through the store. "The version of cyberspace the Chinese government is building is a decidedly dystopian one, and I don't think anyone would want to share in this 'common future.' Apple should have spoken out against it, not endorsed it".