By Elliot Gulliver-Needham Supermarket Income REIT has slashed its fees in a bid to align management’s interest with shareholders. The trust will now charge fees based on its stock price rather than on underlying assets. Since the trust trades 21 per cent below the value of its underlying assets, fees will drop by around 20 per cent, according to calculations from Panmure Liberum. The change could save shareholders £2m a year in fees. The trust’s shares rose one per cent on the news. Still, shares in Supermarket Income are still down a whopping 32 per cent over the last five years. The UK comm…