OK, in response to both the above posts. Let's take a step back and "follow the money" for a second. These transactions have to actually settle, and/or deliver certificates (rare, but is still done).
For the cash to move from one place to another, the transactions have to be matched and offset (contra) by both exchanges and clearing firms. So, there will have to be a record kept of all the transactions. Are some trades "posted" off shore? Sure, but there are pretty strict rules in place, and they too have to "settle" and be paid for or else the people selling the shares can't get their money.
As far as a dynamic change, possibly, but I really don't fear that anything in the next few years will affect the way my people trade (other than the regulatory intervention, pre-borrows, and all of that).
I have been pretty involved for 30 years, and the "they" that many refer to, has actually been "us" in many regards. There will always be those trying to bend the rules, but since we are in a global, computerized world, I think the ability for more transparency, not less, especially when "following the money" will keep most of this in check.
And, as I mentioned, many of our guys are making good money using the dark pools.
Now, in regards to the "naked short selling" yes, there has been too much "slack" in this regard. The rule is, at this point in time, that the Clearing firms have 13 days to locate and borrow the stock required for their members...which is a lot of leeway in my opinion. Clearing firms can and do buy in the shorts on many occassions as well. The latest "test" of the 19 Financials require a same day delivery of shares, thus prompting us to pre-borrow vs. locate shares.
I'll admit there is a lot of action by the regulators and the firms these days, and hopefully all will be sorted out sooner than later.
FWIW,
Don