Sandisk rises as it extends gains after Investor Day

** Shares of Sandisk SNDK.O jump 5.8% to $1,617.12, continuing gains following its Investor Day

** SNDK is on track for a fifth straight session of gains and its highest weekly climb since January

** Executives said on Thursday the company expects to collect $93.9 bln in total contract value from eight customers over the life of those agreements

** RBC and Wells Fargo hiked their price targets on SNDK following the presentation

** 26 analysts cover SNDK, giving it an average rating of "BUY" and a median PT of $2,000, down from $2,200 in July

** SNDK is up 585.3% year to date, versus the Nasdaq Composite Index's .IXIC 14.8% increase