LME aluminum is in positive territory after a 4% gain Tuesday although profit-taking and scale-up selling is expected to cap the market in the near-term, a London trader says. Notes that in the context of a market that has been range trading for many months, a $100-a-metric-ton gain "looks like an extreme move." LME aluminum trades at $2,832/ton, at the top end of its intraday range.