 Shares of Universal Security Instruments Inc. UUU, 4.88 were up 4.9 in very active morning trading Thursday, prior to a trading halt for news, and have soared 31.5 over the past three days. The safety and security devices company said it doesnt normally comment on market activity, but said in a statement Thursday that, it is not aware of any undisclosed material change or development in its business and operations that would account for the recent increase in the share price and trading volume of the companys stock. 