Deep Tide TechFlow News, July 21, according to The Block, Twitter co-founder Jack Dorsey's payment platform Block Inc will be included in the S&P 500 index on July 23. After the news was confirmed later on Friday, the stock rose by 10% in after-hours trading. Block Inc is a technology company operating multiple business units in the digital asset ecosystem, with its Bitkey brand being a simple self-custody wallet built for Bitcoin, while Proto is a suite of Bitcoin mining products and services. Last summer, Block began investing 10% of its Bitcoin profits into BTC each month and open-sourced its financial blueprint so that others could follow suit. Previously, on July 19, it was reported that Block would join the S&P 500 index, but no specific date was mentioned.