Janus ( JNS) asks you to invest in "the power of math" with its new fund. This new approach comes after the fund firm's power of stock-picking has been on the wane. The promise of the new ( JRMSX) Janus Risk Managed Stock fund -- unveiled on Feb. 28 to little fanfare, and taking in a mere (for Janus) $20 million so far -- is to use quantitative strategies to consistently deliver lower risk and higher return than the S&P 500. While a quant fund may seem a refuge for a scoundrel, the Risk Managed fund is a sweeping departure -- a more complex and interesting fund than its previous offerings that merits closer inspection. Thanks to Janus Risk Managed Stock fund, Joe Investor can fork over $2,500 and get the type of complex investing strategies generally available to high-net-worth investors and institutions. Whether that's a good idea requires knowing what this fund does and how it should perform, something that's more than a little unclear from Janus' marketing literature. However, in its previous iterations for institutions, the offering has managed to successfully beat the S&P 500, albeit with tax consequences. Before you go running for your checkbook, understand the risks in the strategy.