2,637 reputation
1033
bio website fitnr.com
location Houston, TX
age 34
visits member for 2 years, 7 months
seen 19 mins ago

Louis Marascio is an entrepreneur, market hacker, and trouble maker in Houston, TX. He's also a husband and father. Occasionally, he writes a bit of code.


Mar
22
comment How to setup quantlib
Belongs elsewhere, maybe StockOverflow?
Feb
15
comment Why does my posterior mean differs from Idzorek's results?
If you've solved the problem you can accept your own answer.
Feb
12
comment Change of order size
It depends on exactly which market we're talking about. But in general with price/time priority markets this is true.
Feb
11
comment Stock Price Question
Is this homework?
Feb
3
comment Estimate reasonable trade sizing based on daily volume
@user2763361 99% certainty, maybe, given hidden liquidity. But point well made :).
Jan
29
comment Where do i find the trade execution priority rules for special order types on continous auction markets
And from the same page you linked: europeanequities.nyx.com/sites/europeanequities.nyx.com/files/…
Jan
29
comment Where do i find the trade execution priority rules for special order types on continous auction markets
NASDAQ doesn't have any "triggered" orders. Not sure if NYSE does, but I doubt it. You're probably confusing an exchange held stop (like that supported by Direct Edge) and a synthetic stop implemented by your broker.
Jan
29
comment Where do i find the trade execution priority rules for special order types on continous auction markets
If this is for US equities, the rules contain descriptions of how orders are executed.
Jan
28
comment Microstructure effects for a market maker?
Hang on one second while I open up my little black book of valuable signals.... you do realize the question is a bit, ambitious, right?
Jan
24
comment Free database for storing intraday tick data and querying bar (candle) data on budget hardware
possible duplicate of Efficiently storing real-time intraday data in an application agnostic way
Jan
21
comment Disclosure of the liquidity provider identity in ITCH
Not sure, sorry.
Jan
3
comment How to become a registered market maker on an exchange
If you're seriously considering becoming a registered market maker, you should be talking to the exchange where you want to register. They will happily tell you the answers. Not on topic for this forum, IMO.
Dec
11
comment Recreate Positions after downtime. Suggestions requested
I will add, it also depends on who you're interfacing with and the supported order entry port features. For example, OUCH ports can cancel all open orders on disconnect. Trying to preserve open orders across unexpected system failure is likely not going to work very well.
Dec
11
comment Recreate Positions after downtime. Suggestions requested
This isn't really a question anyone but you can answer because it depends on how you've built your system.
Dec
11
comment Recreate Positions after downtime. Suggestions requested
Define "outstanding" positions. You said you can look at your execution log to determine fills. From fills you can build positions, so I assume you mean something else. Do you mean, "pending orders" ?
Dec
9
comment Market Discrepancy in ETFs
Please accept the answer if it resolves your question.
Dec
5
comment Single Most Important Fact about a Fund - Interview Question
I've no idea what answer they might be looking for, but that seems like an exceedingly stupid question to ask in an interview.
Dec
5
comment Forcing price to rise or fall by high volume buying and shorting
I don't think so. Spot FX is not regulated as far as I know. Your counter parties / ECN might not like it though.
Nov
29
comment open-source implementation of orderbook from FAST?
If the data is message by message depth of book data you can't get the best bid/offer without building and maintaining a book.
Nov
29
comment open-source implementation of orderbook from FAST?
Order books are all about priority.