It is always nice to feel special, but Ocado may not be basking in the glow - the online retailer's shares have gained the dubious 'honour' of becoming some of the most expensive to borrow on the London Stock Exchange due the extraordinary demand to short them by hedge funds.

At the end of play on Wednesday, some 4.5% of the company's shares available on the London Stock Exchange had been made available for short sellers to borrow - this was up from just over 2.5% at the mid point of last week, according to figures from Data Explorers.