Recent market moves have made Warren Buffett’s AAPL holding worth over $100 billion after tripling in value. Business Insider broke it down.

250 million Apple shares between 2016 and 2018, according to his 2019 shareholder letter. Buffett has cashed out some of that holding since then, and owned 245 million shares at last count. The position is currently worth more than $104 billion. Apple’s third-quarter earnings sent its stock price up 10% to an all-time high of $425 on Friday, lifting its market capitalization to north of $1.8 trillion, and making it the most valuable company on the planet. Apple stock has climbed about 42% this year, boosting the value of Buffett’s stake by $30 billion in the past seven months alone.

Bill English, the man who helped create the computer mouse, passed away age 91, BBC News reported. It came out of an idea created by his colleague, Doug Engelbart.

Bill English became the first person to use a mouse when he built the prototype at Mr Engelbart’s research project at the Stanford Research Institute. The idea was Mr Engelbart’s, which he described as only being “brief notes” – but the creation was down to Bill English. His first version was a wooden block with a single button – and underneath, two rolling wheels at 90-degree angles that would record vertical and sideways movement. “We were working on text editing – the goal was a device that would be able to select characters and words,” Mr English told the Computer History Museum in 1999.