Taking cues from the global markets, the Sensex is likely to open flat to slightly negative this morning. The index is likely to witness high volatility as five index stocks - Bharti, Cipal, Grasim, SBI & Tata Motors - announce their earnings today. While Nikkei has dropped 84 points to 17,340, the Hang Seng is up 11 points at 20,783.The Sensex is likely to face resistance around 14,265-14,280-14,300 levels. On the downside, the index may find support around 14,150-14,135-14,115 levels.