Nearly every article published on suicide from sociology viewpoint will quote Durkheim, and some will start fitting types of suicides in this 21st century lifestyle into one of his four categories of suicide of "egoistic, altruism, anomic and fatalism".
What I can understand was Durkheim was using "chaotic" to describe the changes in the economic system then of division of labour due to industrial revolution in a longer term period observed from his studies (e.g. a few decades) and its impact on the people and society then, and not day to day life stresses? And not even stock markets fluctuations as he has given some examples of French earlier bourses crashes then in the 19th century. To him, these are short-term shock to the system, not underlying change in the society.
Now I am getting confused ...