Fed hiked rates from 0 to 2.5%, the dividends on that fund went from 0 cents to around 20 cents per month now. That's all income compounding.
SlopeCharts adjusts for dividends and splits (it's the default setting under the General Tab in Preferences) and that's what I used. The OBV shows increased buying interest early last year when stocks started tanking, and then even more starting last fall. Safe haven buying?