Chaotic Insane investment banker who passed away in the 90s or 2000s

What you describe actually sounds a bit familiar; or similar to at least several people I remember hearing about back then.

I started in the 90s, but I remember the finance scene in the 80s, due to my father being someone notable at the time. Through him, I met/knew/know a lot of the big names from that era (including some big names today). Some of the stories would almost seem like Hollywood fiction, but were indeed real.

I know of several cases of kidnapping attempts in the 80s (and I heard of others in the 70s, and 90s, albeit less common). In some cases, they would attempt to kidnap the child of someone notable, or attempt to kidnap a senior executive, in the hopes of ransom.

I was the subject of 2 attempts in the early ~1980s (not successful) during my youth, and I had friends and family friends who were almost kidnapped as well. (There was a period of time where it seemed a bit more common than usual, but I'm unsure why).

Other incidents of attempted violent attacks, home invasion, or robbery, also had occurred during that time -- and even today, still do still occur. My family had multiple attempts of such things during that time. (Imagine being a child, and seeing bullet damage, just outside the front door to your UES townhouse. It was eye-opening to say the least).

(Law enforcement did almost nothing at the time, and led to many of us opting for our own measures to protect safety).

(Note: Search YouTube for 1980s and 1970s NYC, and you'll see that it was like a warzone in some areas, with lots of crime, excess, polarized wealth, and almost a Wild West mentality in some ways).

Kidnapping attempts during that era led to a few companies, and wealthy families, to get K&R and KR&E Insurance (Kidnap & Ransom Insurance, or Kidnap Ransom & Extortion Insurance), and also to establish notable private security measures at that time, including armed protection after that, and (often still to this day) for many executives and people/families, especially after such incidents. (That was a lot of the reason that top executives and billionaire families now have almost head-of-state security in some cases).

To the OP post, during that era, I also remember notable (almost famous) cases of insider trading, embezzlement, fraud, and even someone who tried to hide his (ill-gotten) gains -- in gold bars under his bed (lol) -- which was later discovered by FBI (~1980s), from what I heard.

Back then, there were several informal "lunch groups" of guys at different banks who would share information and plan strategies (and I believe some were later charged with various crimes).

Back then, a lot of the partying was of the level of Wolf of Wall Street -- I actually remember hearing about his firm back then.

Back then, a lot of the money was extreme, and stories of partying, entertainment, sometimes organized-crime affiliated activities, and various other things, were definitely of a Hollywood level.

The example that OP mentioned sounds oddly familiar to me, but I need to think further about (specifically) who it might be.

I'll edit/repost if I remember.