(For a stay weblog on the U.S. stock market, click on or kind LIVE/ in a information window)* Nvidia climbs on $40 bln deal for chip designer Arm* Pfizer, BioNTech develop late-stage COVID-19 vaccine trial* Oracle surges on partnership with TikTok mum or dad (Updates to shut)By Caroline ValetkevitchSept 14 (Reuters) – U.S. stocks ended sharply larger on Monday as indicators of progress in creating a COVID-19 vaccine and a spurt of multibillion-dollar offers lifted investor optimism.Drugmaker AstraZeneca resumed its British medical trials of its COVID-19 vaccine, some of the superior in improvement.Additionally, Pfizer Inc rose after the drugmaker and German biotech agency BioNTech SE proposed to develop their Section three pivotal COVID-19 vaccine trial to about 44,000 members.”The market loves something with a vaccine as a result of that’s the final resolution right here. And we’ll see an increasing number of headlines,” on that going ahead, mentioned Tim Ghriskey, chief funding strategist at Inverness Counsel in New York, New York. Merger-related information additionally lifted the market, he mentioned. Nvidia Corp jumped on plans to purchase UK-based chip designer Arm from Japan’s SoftBank Group Corp for as a lot as $40 billion, in a deal set to reshape the worldwide semiconductor panorama. The Philadelphia SE chip index additionally rose.Oracle gained because the cloud providers firm mentioned it could workforce up with China’s ByteDance to maintain TikTok working in the USA, beating Microsoft Corp in a deal structured as a partnership reasonably than an outright sale.U.S. stocks are coming off of two straight weeks of losses as buyers offered heavyweight expertise shares that had powered the benchmark index to document highs in a dramatic restoration from its March lows.Unofficially, the Dow Jones Industrial Common rose 321.54 factors, or 1.16%, to 27,987.18, the S&P 500 gained 42.29 factors, or 1.27%, to three,383.26 and the Nasdaq Composite added 203.11 factors, or 1.87%, to 11,056.65.All the S&P 500 sectors have been larger, and tech heavyweight Apple Inc gave the S&P 500 its largest enhance.Tesla Inc’s shares rebounded after losses final week.Later this week, buyers will give attention to the Federal Reserve’s final coverage assembly earlier than the Nov. three U.S. presidential elections.In different deal information, Immunomedics Inc’s shares jumped after Gilead Sciences Inc’s $21 billion buyout deal, which is a steep premium to the biotech firm’s closing price on Friday. (Extra reporting by Medha Singh and Devik Jain in Bengaluru; Modifying by Saumyadeb Chakrabarty, Maju Samuel and Tom Brown)