(For a Reuters live blog on U.S., UK and European stock markets, click LIVE/ or type LIVE/ in a news window) * Boeing rises on posting second straight quarterly profit * Coca-Cola jumps as soda demand fuels profit forecast raise * Texas Instruments slips as supply chain woes to hurt Q4 revenue * Futures up: Dow 0.11%, S&P 0.07%, Nasdaq 0.13% (Adds comments, details; updates prices) Oct 27 (Reuters) - U.S. stock index futures were set to open slightly higher on Wednesday, helped by a fresh batch of upbeat earnings reports that are likely to fuel Wall Street’s record rally. Microsoft Corp rose 2% in premarket trading as it forecast a strong end to the calendar year, helped by its booming cloud business. Boeing Co gained 1.1% after it eked out a small adjusted profit, helped by a ramp-up in deliveries of its once best-selling 737 MAX jets. Twitter Inc rose 1.5% after the social networking site’s quarterly revenue grew 37%. Google-owner Alphabet Inc reported a record quarterly profit on a surge in ad sales. However, its shares were down 0.2% after rising nearly 59% so far this year. “Today feels exactly like the calm before the storm ahead of a pile of earnings that is due tomorrow and everyone wants to know how the supply-chain issues are going to work out,” said Dennis Dick, a trader at Bright Trading LLC. Worries over rising prices, potentially higher corporate taxes and the Federal Reserve’s tapering plans had rattled markets last month, but upbeat earnings reports have reinforced sentiment in October, helping drive the S&P 500 and the Dow to all-time highs. Both the indexes closed at record highs on Tuesday, while the tech-heavy Nasdaq was 1.1% away from the record high hit on Sept. 7. Coca-Cola Co rose 2.9% after it raised its full-year profit forecast, as the reopening of theaters and restaurants in the United States drove demand for its sodas. Profits for S&P 500 companies are expected to grow 35.6% year-on-year in the third quarter, according to Refinitiv IBES data. At 8:50 a.m. ET, Dow e-minis were up 39 points, or 0.11%, S&P 500 e-minis were up 3.25 points, or 0.07%, and Nasdaq 100 e-minis were up 20.75 points, or 0.13%. Weighing on early trading, shares of energy firms including Chevron Corp tracked lower oil prices, while major lenders such as Bank of America Corp slipped on a flattening U.S. yield curve. Top Senate Democrat Ron Wyden proposed a so-called billionaires tax that would require U.S. billionaires to pay tax on unrealized gains from their assets. “Taxing unrealized gains is a spooky thing. We have a government that is not scared to tax and that effectively affects investor sentiment,” said Dick. Texas Instruments Inc forecast tepid quarterly revenue as the chipmaker struggles with supply chain constraints in the semiconductor industry, sending its shares down 5.6%. Robinhood Markets Inc fell 8.6% after the retail broker reported downbeat third-quarter revenue as trading levels declined for cryptocurrencies including dogecoin. (Reporting by Devik Jain and Shashank Nayar in Bengaluru; Editing by Saumyadeb Chakrabarty and Shounak Dasgupta)