The article objective is the study of exchange market and stock market financial instruments influence on capital flows in Kazakhstan. For this purpose possible influence factors on capital flows in Kazakhstan were analyzed. Statistical data on capital flows in Kazakhstan over a period from 2007 to 2013 were collected. Dynamics of capitalization on Kazakhstan Stock Exchange, the amount of issues of securities and number of issuers, Kazakhstan Stock Exchange index dynamics, banks residents' exchange transactions' volume, currency in cash transactions, foreign exchange cash import/ export by second-tier banks, currency trade volume in Kazakhstan Stock Exchange, interbank credit and deposits in Kazakhstan, on exchange average weighted exchange rate volume were collected and analyzed.Regression analysis is carried out, conclusions and recommendations are given. Found determination coefficient of 99% confirms the hypothesis of stock market and exchange market instruments influence on capital flows in Kazakhstan. The conclusion on the interrelation of capital flows and exchange market and stock market instruments is drawn based on calculated model. The following factors were also detected: the number of issues of securities eligible for trading in Kazakhstan Stock Exchange (KASE); the number of issuers of securities eligible for trading in stock exchange; banks residents' transactions volume; net transactions by exchange offices (foreign exchange cash); foreign exchange cash import/ export by second-tier banks.