I have been checking my portfolio quite a bit lately (although it is getting a bit boring and the performance of my holdings has been predictably bad). The only part of my portfolio that has showed an increase in market value vs. book value were my two bond ETFs (Short-Term Bond Index ETF (XSB) and Real Return Bond Index ETF (XRB)). Makes me glad that 25% of my portfolio is made up of bonds. It helps me get through the night, so to speak. Even better is that it helps preserve capital during these bear markets and provides some holdings that are not so correlated with stocks for increased risk-adjusted return.