Given the bull and bear tug of war, market volatility is back in the market. As such, we have highlighted the best and worst-performing ETFs of last week.

The Zacks Analyst Blog Highlights: PSCD, XES, SGDJ, PSCM and PSCI

While there are winners in almost every corner of the small-cap space, we have presented five top-performing, small-cap ETFs from different sectors over the past month.

Given the improvements in domestic economy, small-cap stocks led the way higher last week.

Total S&P 600 earnings for Q1 are expected to be down 41.5% from the same period last year on 4% lower revenues. However, these sectors show better earnings prospects.

While there are winners in almost every corner of the small-cap space, we have presented four top-performing, small-cap ETFs from different sectors over the past month.

What's behind investors' recent interest in small-cap ETFs.

Small-cap stocks have been leading the way higher with the Russell 2000 index on track for its best performance in the week.

Given Caterpillar's woes, investors wanting to avoid CAT could consider industrial ETFs that have no exposure to this machinery giant. However, risk-tolerant investors might consider this as a buying opportunity....

U.S. jobs data for the month of June beat estimates and is likely to benefit these sector ETFs and stocks.

Earnings of the S&P 600 are down 18.3% year over year so far on 3.1% revenue growth, with 57.1% beating EPS estimates and 56.3% surpassing top-line expectations.