NTT Inc. – Sponsored ADR (OTCMKTS:NTTYY – Get Free Report) shares gapped down before the market opened on Tuesday . NTT shares last traded at $23.81, with a volume of 10,644 shares trading hands. Analyst Upgrades and DowngradesSeparately, Zacks Research upgraded NTT from a “hold” rating to a “strong-buy” rating in a research report on Tuesday, June 30th. NTT (OTCMKTS:NTTYY – Get Free Report) last issued its quarterly earnings data on Thursday, August 6th. NTT Company Profile(Get Free Report)Nippon Telegraph and Telephone Corporation (NTT) is a Japan-based telecommunications and information technology company.