Falling stock prices caused massive unrealised losses on investment in 2018.: Sinking stock prices at the Nairobi Securities Exchange (NSE) #ticker:NSE and rising operating expenses eroded stockbrokers’ profits in 2018, pushing the industry into an overall loss position. Half of the 23 stockbrokers and investment banks posted a combined loss of Sh378.4 million, mainly on the effects of unrealised losses on investment — taking after a bear run on the bourse that wiped out Sh419 billion in the year to December.