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I like mark cuban on shark tank. I think he's a smart guy. But why in the world does his opinion on market microstructures matter?

First, you should go read to that JPM thread so that you know what not to do... but I'll assume you mean well and are serious: As the guy above said, you are too late for this sort of a path. It no longer really exists. But that doesn't mean you can't get a start. Not to state the...

No. What, exactly, is the price of QE? potential future inflation? Okay. What's the price of technical default of US sovereign debt? Instant collapse of all international (and most domestic) transactions. Evaporation of pensions, insurance pools, 401ks. So, no - it doesn't sound very good...

QE is not a technical default. If it is, then CDS on US would trigger. Same for the UK and Japan. That's an important point: devaluation is a not a default - even if it has a similar effect. So, a large sovereign can always inflate out of his debt rather than default outright. This point...

This is a technical default.

Baron should post this in 20 pt bold permanent on the homepage. But, of course, that'd be bad for business.

I think this is the problem with the trading-as-a-business framework: In a regular business, margins are relatively stable. Revenue forecast are somewhat possible. In trading, the analogous metrics: the expected return, is EXTREMELY unstable and difficult to forecast. You may think that...

Ah - I see. No worries - ET appears full of out of touch dreamers with no basis in reality. Surely someone will come along and suggest that you leverage up by borrowing from your credit cards. Or... you know, you can be realistic - which is what business is.

Giving your doctor investment advise on something you admittedly have no expertise in is just brilliant.

Yes. Keep doing exactly what you are doing and see if you are still making money in another 12 months.

If I'm offended by crazy consipracy theories, then I'd be mighty pissed off to live in NYC. I'm just surprised to see it on a board ostensibly for traders. But then, I'm learning otherwise

With a negative cusip number no doubt.

As my user name implies, I trade govt bonds professionally. This is purely unhinged nonsense. I hope you are joking.

How... Is this remotely true??? In fact, its readily apparent to any one who has taken even the most basic stats class that this is wrong. And no, martingale argument doesn't apply, since you are talking about price randomness and not unlimited doubling down. Mind you, I agree with some of...

What's the problem here? None of this stuff affects people who invest. Arguably, better executing algorithm adds value to investors. So who cares if short term traders are impacted? Are the short term traders' welfare more important than the "machines"? What about the machines' designers'...

That's a big make believe there... the only thing close to "easily accessible investment" would be to be either the emperor of europe or the emperor of china... and note - the former doesn't really exist and in both cases, no dynasty lasted the whole period. So, this is really not much of...

Is this inherently bad? Should we rather be more like the soviets in 80's - where there's nothing to consume? Or is our love of consumption and finding more ways and more things to consume the engine that brought us this far?

Looks like I'm really late to this party - but isn't simulated max draw down of multiple normal random variates basically just a function of their covariance matrix? (though an ugly one with no analytical solution)? So why is this any different from using portfolio variance (that you hate) x...