FT Vest Nasdaq-100 Buffer ETF Faces Sharp Volume Drop Shares of FT Vest Nasdaq-100 Buffer ETF (QMAR) experienced a significant decline in trading volume, with only 20,650 shares traded compared to the average of 63,398. This represents a 67% drop, coinciding with a 2.2% dip in stock price. The ETF's performance is raising questions among investors about its near-term prospects.12