Sharp Decline in Short Interest Observed for Invesco NASDAQ Next Gen 100 ETF Short interest in the Invesco NASDAQ Next Gen 100 ETF (QQQJ) dropped by 61.7% in April, falling to 59,000 shares. The current short-interest ratio stands at 0.5 days, suggesting reduced bearish sentiment. Meanwhile, several institutional investors have increased their stakes in the ETF during recent quarters.34