According to the ETF Finder at ETF Channel, SWK makes up 1.73% of the Fundamental Pure Mid Growth Portfolio ETF (PXMG) which is up by about 1.4% on the day Wednesday.
In afternoon trading Wednesday, SWK was up about 1.7% on the day.
Wall Street churn around the flatline for much of the day before settling higher.
Stocks are lower on Thursday afternoon as a sharp decline in crude oil prices weighs on the energy sector.
Stocks rise, though are off earlier highs, Thursday morning after the European Central Bank raises its growth forecasts and maintains its loose monetary policy.