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I think the trading world would be better with more light and less shade/mirrors. I think putting a shade over trading gyms would darken the world, not lend more light. Ugly though, that. :confused:

The "shock" being emulated is of the market's forward-fearing estimation (on options), not what the underlying's bid-ask machinations eventually produced, right? So: IV, not HV.

Oh HELL yeah. It's like a mountain shop: they're not in the business of getting you out in the woods, but in the business of selling you gear. The issue they have is, the guy with a 50lb pack has 10lbs worth of gear, and 40lbs worth of food, and is gone for 3 weeks. What the newb buys is 40lbs...

Noooooo. I'm saying TopStepTrader is a lie. It is a lie, built around a falsehood, and set upon a prevarication. It is Kool-Aid, imbued not with cyanide, but with volunteered bank account numbers -- and no amount of your kind comments on its pretty color changes the degree to which it bleeds its...

Yet another of those threads where posts are not fully formed, where particular specifics are generalized to whole populations (in this case, option chains), and where people talk right past themselves with a bunch of C- answers. The 85 nails this one with, [[met1989 said:]] what stuff should...

No, their business model is *all* of our business. (Fergawdsakes. :confused:) The "objective of the article" is to show abnormal day traders' short-run returns, as if they were normal. They are not normal; the article amounts to a lie. :banghead::wtf::rolleyes:o_O:cool:

I've said it before, but it's way worth repeating: When my excellent, wonderful, amazing spreadsheets grow up, they will be Hoadley. (That's about as high a compliment as I could make. Never used it, never bought it, "NFI", but I have certainly lusted over it and drooled over it, over the years...

Personally, I think you're on the right track. Getting your VBA/Excel tools in order will give you great and justifiable confidence in moving into a more-pure language like Python. You will find 3/4s of Python structures to resemble data/maneuvers that you undertook with VBA/Excel. And what is...

The business model of Gold's Gym has their "customer" signing over their banking info and a commitment to provide a token monthly payment -- backed by a Byzantine contract separation formula and a well-staffed legal back-office. The "customer" thinks they are buying gym access -- and when they...

The magic phrase which opened Google results for me was "profit attribution" attached to variants of Black Scholes Merton options blah-blah-blah... If there is no *set* formula that includes a volatility-change component, realize that *any* non-zero adder you create to account for at least some...

I have no idea how you could entertain an option trade -- long or short, ATM-ITM-OTM -- without knowing theta, theta vis-a-vis delta, and theta vis-a-vis vol.

I would graph out as much as you can, aiming towards a 3-dimensional surface of delta versus theta versus vol. If you just circle your constraints on those graphs, you'll notice that their areas are not coincident -- and so you end up with widely separated strikes for targets. So: join your...

I mis-wrote my first response here: what I meant to convey is that 'the experts' often bring so much to the table in their 1-2 areas of expertise, that they think they can dance around what they lack in the third area, and can make up for it. (And be successful in the end.) I think a...

I have to admit that I wish I had been present towards the end of the interview, to perhaps push this Venn diagram across the table. In particular, I see -- increasingly -- that "Magic" happens with the marriage of strong comp. skills and strong quant. skills -- but that only gets you to Machine...

To repeat myself, "Size Matters."

Show us a trend-exploiting algo that is undermined by a lack of vol. Just one. :wtf: :D

Usually when we hear, "Size matters!" -- what is conveyed is an admiration and a recognition that size confers an ability to weather swings, to buy out of risk, to avoid the tumbling and trampling that smaller entities face. But here, size means slower. Size implies maladroit. Size itself...

Sorry but, Reality Bites on occasion. If you put Robbins' wishes in one hand, and peed in the other, guess which one will get filled first??* *Thanks, Mom.

Many S&P front expiry options will go to the minimum non-zero value of 5¢ 5-8 market days before they die. And they will sit right there -- NOT go to 0¢, NOT go to 0 trades, through expiration. Their theta has turned from visibly negative -- to a nearly (or completely) flat line with slope 0. It...

Keep your money in the bank until you have a clue. "...If the setup is correct" suggests you are clueless. You have not posted what underlying you're trading. You have not posted whether call or put, or whether you intend ITM, ATM, or OTM. You have not posted whether you're going lone or in a...