Group 1: Celestica (CLS.US) - Citigroup upgraded Celestica's rating from "Hold" to "Buy" with a target price of $375 [1] - Analyst Atif Malik forecasts a 75% increase in capital expenditure from five major companies, including Oracle, in 2025, followed by a 40% increase in 2026 [1] - Expected growth for Celestica's communication business is projected at 77% in 2025 and 41% in 2026, with EPS estimates raised by 5% and 22% for the fiscal years 2025 and 2026 respectively [1] - Celestica operates two main divisions: Advanced Technology Solutions (ATS) and Connectivity and Cloud Solutions (CCS), with most revenue coming from the CCS division [1] Group 2: Ciena (CIEN.US) - Citigroup raised Ciena's target price significantly from $141 to $230 [2] - Ciena's data center business is experiencing strong growth momentum following Verizon's announcement to connect to Amazon's cloud service data centers [2] - Ciena specializes in optical transmission technology, serving a diverse range of clients including telecom service providers, network scale providers, cable operators, government entities, and large enterprises [2]