Genetic Technologies Ltd (Nasdaq: GENE) grew 71 percent in price Monday to $2.53. Volume of 191,089 shares proved nearly 100 times its full-day average volume. GENE is a leading-edge genetic testing business which, together with an extensive range of international patents and allied research activities, aims at uncovering the impact of DNA on health.

Citgroup Inc. (NYSE: C) traded Monday in 176,181,317 shares, compared to its daily average of 546,005,000. Prices for the stock tailed off 0.9 percent to $4.89. Citigroup Inc. today announced that it has received requisite consents from holders of CitiFinancial Credit Company’s 6.625% Notes due 2015 and is extending the early tender date and consent date of its exchange offer.

Strayer Education Inc. (Nasdaq: STRA) lost 22.2 percent in Monday trading to $119.30. Volume for the stock was 1,334,882 shares, more than four times its daily average. STRA is an education services holding company that owns Strayer University and certain other assets.