It's been a busy week for General Electric (GE 0.88%) and its investors, with management holding two separate investor day presentations. The first was for GE Venova, a business set to be spun off in early April that contains GE's power and renewable energy businesses. The second was for GE Aerospace, the commercial aerospace-focused business that will remain.An analyst upgradeBoth presentations were well received, and they apparently convinced a JPMorgan analyst to upgrade the firm's price target to $180 f ...