In 16 years, China stocks experienced their best day, causing U.S. ETFs to surge.

The Chinese stock market experienced its best day in 16 years, while U.S. ETFs also surged after recent economic stimulus boosted investor confidence.

The stock market index gained 8.06% in its best day since September 2008, ending the month with a 17.39% increase, its first monthly gain in five and its best monthly performance since April 2015.

Its best day since April 1996 was a 10.9% increase, and its best month since April 2007 was a 24.8% gain in September.

The gained nearly 6%.

The human resources company's shares in the U.S. increased by 9%, while the online video company's shares gained 2.9%. Additionally, the online brokerage company experienced a 15% rise in its shares.

The gained 4.2%, while the rose 2.2%.

Shares of the U.S. listed companies had gained more than 4%, and had increased by 5.4%.

The Chinese stock market has experienced a surge following Beijing's announcement of economic stimulus measures, including interest rate cuts, to bolster the struggling property market. On Thursday, state media reported that Chinese President Xi Jinping and other top leaders endorsed these measures.

"Although we cannot predict if there will be enough to fully revive the economy, it is the initial step in the right direction, according to Art Hogan, chief market strategist at B. Riley Securities. The influence of a stronger China should not be underestimated."

""On balance, this is an ambiguous positive for markets going forward, and I think investors will have to quickly recalibrate their expectations," he added."

The number of U.S. investors who are optimistic about the market has increased after the move. Last week, billionaire hedge fund founder David Tepper stated that he is extremely positive on Chinese equities, having invested heavily in everything related to China after the Federal Reserve cut interest rates.

This report was contributed to by Gina Francolla, Nick Wells, Lim Hui Jie, and Evelyn Cheng from CNBC.