The Globe and Mail reports in its Thursday, Aug. 27, edition that United States software shares have seen significant volatility, with more swings expected due to artificial-intelligence-driven uncertainty and trading strategies that amplify fluctuations in tech sectors. A Reuters dispatch to The Globe reports that after reaching a record high on Oct. 28, the S&P 500 software and services index dropped over 33 per cent by April 10, with accelerated selling following Anthropic's January product release, raising concerns about obsolescence for many firms' products. The index bounced 33 per cent during a solid first quarter earnings season, then fell again before partly recovering in a healthy second quarter. It's down over 3 per cent for the year and remains more than 12 per cent below its October record. The volatility in software highlights the impact of popular strategies like momentum trading and the influence of leveraged funds that amplify daily moves. The latest sector bounce was highlighted by an eight-session, 29-per-cent surge in shares of Microsoft, the biggest stock in the index and one of the biggest in the world, following its July 29 earnings release.