Stock market investments are in the spotlight of the household finance literature, although real-world households make other financial decisions of higher relevance. We widen the scope and include decisions related to, e.g., voluntary pension plans, whole life insurance contracts, and housing and investments in other risky assets than stocks, e.g., bonds or mutual funds. Further, we provide a methodology that goes beyond regression analysis by employing a structural equation analysis (SEA) and apply it on data from a broad and representative survey of the German Central Bank. Our SEA allows us to investigate and quantitatively estimate complex relationships and to test several hypotheses simultaneously. Our structural equation model captures about 60% of the variation in the capital market participation decision. The results show that although households' financial literacy and risk aversion are most strongly related to investments in risky assets, further factors such as wealth, voluntary pension plans and whole life insurance contracts, financial advice, and investment experience should also be considered. Financial literacy is negatively related to risk aversion, i.e., the higher the financial literacy, the lower is the risk aversion. Age and gender are directly related to capital market participation and indirectly via financial literacy and risk attitude.