S&P 500 set-it-and-forget-it strategy due for a rethink: experts
Trevor Williams | DigitalVision | Getty Images The S&P 500 index closed at a new all-time high on Wednesday amid a federal government shutdown. It rose to a new intraday high early Thursday. Prior to that, the index — which is focused on large-cap U.S. equities — had risen almost 90% since the equity bull…