The following ETFs have seen significant inflows recently: QQQ, TSLA, COST, and CSCO. These inflows are noteworthy and indicate increased investor interest in these companies. The QQQ ETF, which tracks the Nasdaq 100 Index, has attracted a substantial amount of investment. TSLA, a popular electric vehicle company, has also seen a surge in inflows. Additionally, the COST and CSCO ETFs have experienced notable increases in investment. Overall, these inflows suggest that investors are bullish on these companies and see potential for growth in the near future.