Raspberry Pi: What happened to the UK’s former tech darling? Shares in Raspberry Pi tumbled on Tuesday after the group revealed its half-year resultsShares in Raspberry Pi tumbled in London on Tuesday after the low-cost computer maker revealed a sharp drop in half-year profits, leaving investors questioning whether one of the UK’s most high-profile tech IPOs can live up to expectations. “DRAM supply and pricing is a wider concern but Raspberry Pi has enough on hand to hit sales goals. A test for UK tech listingsFounded in 2012 to make computing more accessible, Raspberry Pi has sold tens of millions of its single-board computers worldwide, used everywhere, from classrooms to industrial systems. But with profits under pressure and the share price sliding, Raspberry Pi is increasingly being viewed as a litmus test for how UK investors treat small and mid-cap tech.