I obviously don't have a clue, as you said. However, in my experience most senior people at sell-side shops would have a broad understanding of the business. It is especially true about the quantitative types. It might not be a detailed knowledge but they know enough to keep up a conversation and understand the key issues.Quote from CalVolibrator:
By the way, hardly anyone who specializes in equities or equity derivatives would ever touch fx, commodities or OISs, for example and vice versa. What I mentioned about Citi is a very rare exception. Only shows it is you guys who do not have the slightest inkling. This site is so full of dropouts, wannabees, and bullshitters, I would not use it for anything but a good laugh and the occasional rant.
Take me, a senior equity vol trader, as an example. I have never traded CDOs, but I can have a meaninful conversation about the risks in these products. I can have a reasonable conversation about the recent spark spread action and the merits of paying the belly vs the front. It should come naturally - you are swiming with these people, read research, hear of the good and (especially) the bad trades and learn that stuff if by osmosis alone.
PS. As for drop-outs, aren't you a prime example? So far I see a guy who failed at a few places (oh my God, some of 'em were Tier 1, all hail the great Citi Bank), got fired and could not get back in.