We performed a screening of small-cap ETFs - defined as having Assets Under Management (AUM) between $300 million and $2 billion - to determine what funds had the largest positive and negative returns on the week, according to data from etfdb.com. Only non-leveraged funds were considered.

Winners

ARK Next Generation Internet ETF (NYSE:ARKW)

ARKW is up 4.04% over the trailing week.

ARK Next Generation Internet ETF invests in companies that are focused on and expected to benefit from shifting the bases of technology infrastructure to the cloud, enabling mobile, new and local services, such as companies that rely on or benefit...