It finished up 0.2 percent on Friday at $57.24, the highest close since September 24.
Video footage by local media showed a protester lying in a pool of blood.
Asian stock markets fell.
Protests have escalated in violence after one student died last week falling from a garage during a police dispersal operation and another was shot by a policeman.
"Despite his bluster that "China wants a trade deal more than I do", markets sense that Trump is likely quite keen to call a truce on what is becoming a serious U.S. economic risk heading into the 2020 election year", said David Bassanese, Sydney-based economist at Betashares.
Shares in NY ended last week with healthy gains, though stocks wobbled between small gains and losses on Friday amid the conflicting signals about the trade talks.
"Protest Hong Kong has been dragging for a while and the view of the financial world is that it's really starting to bite now. The further this drags on it's certainly going to be very negative".
"(Trump) makes the USA decision-making process efficient and transparent, because he basically says what it is", Long said previously at the China Investment Conference, per the SCMP.
United States crude was 47 cents, or 0.8%, decrease at $56.77 a barrel, having risen 1.9% last week. The buying momentum was so strong it had sent the Hang Seng gauge into overbought territory for the first time since April.
US-China trade headlines remain in focus. "Investors got a little too optimistic and too excited and spiked these prices and now we are seeing a rollback as the White House comes out with fairly firm statements".
"We want Trump to be re-elected; we would be glad to see that happen", said Long Yongtu, the former vice-minister of foreign trade, said to the South China Morning Post at a conference in Shenzhen on Thursday.
Trump said on Saturday that the U.S. -Sino trade talks were moving along "very nicely" but more slowly than he would have liked. A US official also reportedly said both sides agreed to roll back the tariffs in tranches. According to the statistics, since World War I, the sitting US president has won re-election 11 times out of 11 if the economy was not in recession within 24 months ahead of an election.
Investors also were anxious about the situation in Hong Kong after a violent escalation of protests knocked almost 2% off Asia-exposed banks HSBC and StanChart.
Hong Kong safety is now a big question, said Jackson Wong, asset management director at Amber Hill Capital.
At close, China's A-shares were trading at a premium of 28.60% over Hong Kong-listed H-shares. "If I had a company, I would rather move people to Kuala Lumpur [in Malaysia] or Singapore", he said.