In this study, we use data from SEED for Oklahoma Kids (N = 2,77), a statewide policy experiment testing Child Development Accounts (CDAs), to examine effects on individual savings for children’s postsecondary education. Built on the account structure of the Oklahoma 529 College Savings Plan, the experiment automatically opened state-owned 529 accounts for children in the treatment group with a 1,000initialdeposit,andencouragedtheircaregiverstoopenandsaveinparticipant−owned529accounts.Usingquantileregressionsandstatisticalmatch,thestudyfocusesontheeffectsofCDAsontheshapeofthesavingsdistributionamongparticipantswhoholdaparticipant−ownedaccountfortheirchildren.Resultssuggestthattheinterventionhasheterogeneouseffects,affectingindividualsavingperformanceofabout8400 more in savings than their counterparts in the control group. Treatment participants who are motivated by the intervention to hold a participant-owned account have mean deposits of nearly 900.Allthosewhoaremotivatedbytheinterventiontosavehavemeandepositsof1,826. a high proportion of treatment group participants motivated by the CDA intervention to have participant-owned accounts have socioeconomically disadvantaged characteristics; the CDA intervention reduces inequality in savings for children’s education. While the CDA intervention affects some treatment participants’ individual savings, total assets accumulated in both state-owned and participant-owned accounts can play an important role in financing postsecondary education. When appropriately designed, CDAs can promote asset building among all children, and holding assets is a promising policy tool to improve college preparedness and help finance postsecondary education