The ongoing earnings season deserves attention even as Wall Street continues its topsy-turvy ride. Projections for corporate earnings do not signal any kind of pessimism as of now. While the S&P 500 is estimated to register 20% growth in earnings on 7.2% higher revenues, the smaller spectrum of the S&P is not behind.Per the Earnings Trends issued on Oct 24, the small-cap index S&P 600 is expected to log 18.1% earnings growth in Q3 on 7.4% higher revenues. Investors should also note that a fast-growing U.S. economy, a stronger greenback and geopolitical tensions may favor domestically focused, pint-sized stocks over the larger ones.If investors want to know sector-specific outperformance, they need to dig deeper into the earnings scorecard of the S&P 600 and understand the areas of strength in this capitalization.Inside Q3 Earnings Expectations The Q3 earnings season has just started with 14.8% companies (17.1% of the market cap) of the S&P 600 index having reported so far. Earnings are up 30.6% year over year on 12.9% revenue growth, with 69.7% beating EPS estimates and 55.1% surpassing top-line expectations. For Q3, total S&P 600 earnings are expected to rise 18.1% on 7.4% higher revenues.Financials – Invesco S&P SmallCap Financials ETF PSCFEarnings and revenues for the financial sector are expected to be up 52.0% and 6.6%, respectively. Around 30.1% of the companies have reported earrings as of now with a blended beat ratio of 40%. Companies that already reported saw earnings growing 36.7% on 12.7% revenue growth. About 72.5% companies beat on bottom line while 50% surpassed revenue estimates (read: Why Financial ETFs Are Down Despite Decent Bank Earnings). Basic Materials – Invesco S&P SmallCap Materials ETF PSCMAlmost 17.9% of the companies have released Q3 figures so far. Earnings growth has been recorded at 62.5%, while revenue growth is 16.2%. The blended beat ratio is 40%. Overall, the fund is expected to log 40.4% growth in earnings on 13.4% higher revenues.The underlying index of the fund is designed to measure the overall performance of small-cap U.S. stocks engaged in the business of producing raw materials, including paper or wood products, chemicals, construction materials, and mining and metals.Industrial Production – Invesco S&P SmallCap Industrials ETF PSCIAbout 30.2% of the companies posted earrings. Earnings and revenues for the sector are up 52.2% and 11.6%, respectively, while respective beat ratios are of 53.8% and 69.2%. Overall, the sector is expected to advance 28.1% on 12.2% higher revenues.The underlying index looks to track small-cap stocks from businesses providing industrial products and services, including engineering, heavy machinery, construction, electrical equipment, aerospace and defense and general manufacturing.Construction – Invesco Dynamic Building & Construction ETF PKBAround 14.3% of the companies have reported earrings as of now. Earnings and revenues for the construction sector are up 20.2% (beat ratio is 66.7%) and 16.5% (beat ratio is 100%), respectively. Overall, the sector is expected to see 22.3% uptick in earnings and 17.1% rise in revenues. The fund has about 40% exposure to small-cap construction stocks, followed by 37% in mid-caps and the rest in large caps (read: Trump's Approval Rises Before Midterms: ETFs to Lose/Gain).Want key ETF info delivered straight to your inbox?Zacks’ free Fund Newsletter will brief you on top news and analysis, as well as top-performing ETFs, each week. Get it free >>Want the latest recommendations from Zacks Investment Research? Today, you can download 7 Best Stocks for the Next 30 Days. Click to get this free report PWRSH-SP SC IND (PSCI): ETF Research Reports PWRSH-DYN BLDG (PKB): ETF Research Reports PWRSH-SP SC FIN (PSCF): ETF Research Reports PWRSH-SP SC MAT (PSCM): ETF Research Reports To read this article on Zacks.com click here. Zacks Investment Research Want the latest recommendations from Zacks Investment Research? Today, you can download 7 Best Stocks for the Next 30 Days. Click to get this free report