Notice u/s 143 (2) limited scrutiny

Dear Sir, I had filled ITR for F. Y. 2014-15 and now today I recieved a Notine from ITO asking me to clarify the " Securities Tansactions" which I traded in the stock market in that Financial year. Actully I ;lost my all the savings in shares, and I did not earn any income from shares , so I did not show the ITR, i do not have any information whare to show loss on security. Please help to reply to the AO. Thank you Sushil Kumar Pandey