Social-media site Twitter Inc. TWTR, -0.75% was down Thursday afternoon, and its shares also were sliding. Users attempting to access the platform were receiving a message saying that “something is technically wrong.” A spokesperson for Twitter confirmed the outage but didn’t provide further details. “We are currently investigating issues people are having accessing Twitter. We’ll keep you updated on what’s happening here,” the spokesperson said. Shares of Twitter were down 0.8% on Thursday while the broader market was mostly rising, with the Dow Jones Industrial Average DJIA, +0.85% on track to close at a record and the S&P 500 index SPX, +0.23% set to also close near all-time highs. The technology sector, however, was showing some signs of weakness, with the Nasdaq Composite Index COMP, -0.08% down 0.1% at 8,195, lagging behind its peer equity benchmarks.