Baillie Gifford U.S. Growth Trust, battling plans by U.S. activist Saba Capital to shake up its board, unveiled fresh data on Tuesday to show it had outperformed the S&P 500 Index in sterling terms in the six months to Nov. 30. In response to Saba's allegations of consistent underperformance, Baillie Gifford said the company's share price and net asset value returned 40.9% and 29.4% respectively over the period, after deducting borrowings at fair value. This compared with a total return of 15.3% for the S&P 500Index in sterling terms, it said, dismissing Saba's proposals to place two of its own nominees on the board as a