Altice USA Inc. (ATUS) subsidiary Optimum has reached a milestone of 100% fiber connectivity across 500,000 residential customers. The unique feat was achieved on the back of significant investments to expand its fiber network footprint across its service areas. These include a $40 million investment in Long Island this year and a multi-million-dollar infrastructure upgrade in the Northeast markets over the last several years.Altice has also forayed into new markets to strengthen its regional presence. The ...