
** E-commerce giant's shares up 2.1 pct premarket at $1533 as Cyber Monday kicks off - set for best day in nearly three weeks if gains hold
** Stock also set for sixth session of gains this month
** Cyber Monday expected to be the largest U.S. online shopping day in history yielding $7.8 bln in sales or 17.6 pct growth over last year, according to Adobe Analytics
** This follows Black Friday which saw online sales jump more than 23 pct, crossing $6 bln, while online sales surpassed $3.7 bln on Thanksgiving, according to Adobe Analytics
** Online retailer EBay Inc also up ~2 pct before the opening bell
** Up to Friday's close, AMZN up 28 pct YTD
(Reporting by Arjun Panchadar in Bengaluru)