Shares of Twitter Inc. /zigman2/quotes/203180645/composite TWTR -1.20% fell 2.0% in premarket trading, putting them on track for a seventh-straight loss, as uncertainty over the buyout buy Tesla Inc. /zigman2/quotes/203558040/composite TSLA -3.28% Chief Executive Elon Musk continues to grow. That would be the social media company's longest losing streak since the seven-day stretch that ended Dec. 20, 2021. The stock had tumbled 19.1% amid a six-day losing streak through Friday, highlighted by the 9.7% drop in Friday after Musk tweeted that the deal was "temporarily on hold" while he looked into spam/fake accounts. That marked the biggest six-day loss since the stock plunged 21.8% over the six days ended Nov. 2, 2020. There was more uncertainty created over the weekend, when Musk tweeted there was some chance that the fake/spam/duplicate tweets might be over 90% of daily active users. Meanwhile, Tesla's stock was little changed ahead of the open. Year to date, Twitter shares have slipped 5.8% and Tesla's stock has tumbled 27.2%, while the S&P 500 /zigman2/quotes/210599714/realtime SPX -1.75% has declined 15.6%.