[dataflow]

> Notice that from the point of view of the anonymous counter party trading with you on the stock exchange, both situations look exactly the same. [...] So making insider trading legal in the US wouldn't make the general public any worse off.

Eh? If nothing else, doesn't it magnify the public's risk beyond whatever impact Buffet could have on his own? How can you possibly claim there is no difference?

You might as well say: imagine you secretly give another country nuclear weapons, and assume that that country plans to use them. Now imagine you plan to use them for the same purpose yourself. From the viewpoint of the public, the situation is exactly the same. So nuclear proliferation wouldn't make the general public any worse off.

Or imagine the president picks a random person by lottery every day to run the country while he goes to play golf. The president can take the same actions himself, so from the standpoint of the general public, nobody would be worse off.

[eru]

> Eh? If nothing else, doesn't it magnify the public's risk beyond whatever impact Buffet could have on his own? How can you possibly claim there is no difference?

Let me be more explicit: Warren Buffett usually doesn't physically execute his own trades. So the only difference between the two scenarios I outlined is that in the second one Warren Buffett tells you (as his employee) to trade. In the first one, you trade without him telling you to do so.

But it's the same person doing the trades in either scenario.

> Or imagine the president picks a random person by lottery every day to run the country while he goes to play golf. The president can take the same actions himself, so from the standpoint of the general public, nobody would be worse off.

Sortition might actually be a good idea.

https://en.wikipedia.org/wiki/Sortition

[throwanem]

If you have clients, now would be a good time for you to become very curious about something called "the principal-agent problem," rather than wait till some prosecutor mentions the phrase before a dock in which you, if permitted a chair, are sitting.

[eru]

Do you mean the general 'you', or me specifically?

Fiduciary duty is an important concept in any case, yes.

[dataflow]

You completely missed the point. It had nothing to do with who is executing the trades.

>> If nothing else, doesn't it magnify the public's risk beyond whatever impact Buffet could have on his own?

I am saying that when you let others pull the same trick in addition to Buffet himself, they can now bring their own additional funds to play with -- meaning they can make more trades and cause even more damage than Buffet could inflict on his own. This clearly enlarges the blast radius and allows more harm to the public than Buffet could cause with his own funds. It is ludicrous to close your eyes and suggest the situation is no different, just like it is by suggesting that there's no difference between one country having nukes vs. N of them having them.

Heck, the fact that Warren Buffet is used as the example here instead of some random John Doe makes it clear how intentionally ridiculous the example is: for this to even pass the laugh test and obscure the reality of the situation, you have to pick one of richest people of all time, so that even aggregating a thousand other random strangers' funds together would still miss his purchasing power by multiple orders of magnitude.

Why don't you start with someone poor instead of Buffet, then add Buffet to the equation, then try to claim that bringing the billionaire into the equation makes no difference, rather than the other way around?

[eru]

> I am saying that when you let others pull the same trick in addition to Buffet himself, they can now bring their own additional funds to play with -- meaning they can make more trades and cause even more damage than Buffet could inflict on his own.

Buffett is not inflicting damage on anyone by trading on his intentions. Neither would anyone else.

Also: the typical 'insider' in insider trading cases has far less budget to bring to bear than the typical principal. Eg Warren Buffett (and Berkshire Hathaway) are richer than Warren Buffett's assistant.

Also: 'insider trading' is perfectly legal for commodities and foreign exchange, and the markets in these work perfectly well.

> Why don't you start with someone poor instead of Buffet, then add Buffet to the equation, then try to claim that bringing the billionaire into the equation makes no difference, rather than the other way around?

I'm very poor compared to Warren Buffett. If Warren Buffett wanted to trade on any information I held, I'm very sure we could work out a deal.