By Elliot Gulliver-Needham While it might seem counter-intuitive, it is actually better to invest when the market has hit an all-time high, rather than sitting on the sidelines with cash. Just because the US stock market has recently hit an all-time high, doesn’t mean you should be worrying about getting into investing. New research from Schroders shows that over a 12 month period, since January 1926, investing in US large cap equities at a new peak will yield on average 10.3 per cent, compared to 8.6 per cent at all other times. However, when looking at investing over 24 months and 36 months,…