Enamoured by gamified FinTech platforms and the rise of investment cultures on social media, young people are turning to financial markets to take control over their future in a present shaped by instability and crisis. Recently, the story of young investors has been dominated by sensationalist accounts of speculative investing (i.e., GameStop). But alongside these speculative traders exists the young passive investor, who steadily invests in safe, diverse assets to grow their wealth over their lifetime. The figure of the passive young investor points to a larger social phenomenon of a maturing asset economy where major assets such as property are out of reach, but financial assets have emerged to allow young people to live an assetised life. To understand why young investors are turning to financial markets as an instrument of wealth accumulation, I argue that these practices emerge as a response to young people’s affective state of precariousness. This precariousness emerges from their material and discursive context that includes a retreating welfare state, wage stagnation, limited employment pathways, and individualised risk management. This affective atmosphere of precariousness pushes young people to seek stability and security wherever they can, and for young investors, this is found in financial assets.