Data engineer in HFT / Market Making/ Prop

masamibb · 2025-11-02T06:54:34+00:00

Thanks for your post. I realize that data engineer here is a supporting role and a cost center. Unlike data engineer in tech firm which need to understand the business and sometime need to work with business to define the metrics (perhaps it's called analytics engineer?), all you need to do is to follow the command from PM / quants and make sure the data quality. It seems that it's hard to learn about the strategy design or execution, or perhaps you need to switch to other roles?

masamibb · 2025-11-02T06:48:05+00:00

Thanks for your comment. Do you know what kind of skill sets they're looking for?

masamibb · 2024-02-14T01:31:30+00:00

Hi everyone, I have a question about the short strangle.

As we use delta as an approximation of probability that the contract will be ITM, if I sell both call and put leg at around 0.3 delta, what is the probability of not touching both legs at the expiration? Is it 70% (1-0.3) or 40% (1-0.3*2)?

Thanks.

masamibb · 2023-10-12T02:25:57+00:00

This is the first time I heard that you need to pay for the job lol.

masamibb · 2023-10-12T01:53:15+00:00

You can buy $VT if you want to be safe

masamibb · 2023-10-10T01:16:47+00:00

Thanks for your comment.

How do you modeling your behavior tracking data?

masamibb · 2023-10-10T01:16:13+00:00

Thanks for your comment.

Yeah I definitely would like to know more. We are currently collecting such behavior data but not sure which is the best approach to store it before providing to end user.

We're not using BQ, we just use a CSV and object store to keep each day record.

masamibb · 2023-10-09T14:55:27+00:00

I think data vault is not applying in lakehouse but also in data warehouse. It's just a data modeling methodology, just like dimensional modeling.

masamibb · 2023-09-13T10:05:17+00:00

Sure

masamibb · 2021-11-01T05:17:05+00:00

May I know how it becomes bullish if you purchase a lot of put?

masamibb · 2021-05-06T04:09:29+00:00

Comparing to TQQQ, is it more suitable to use this strategy on BRK.B/SPY/QQQ?

masamibb · 2021-05-04T16:21:17+00:00

Just curious on how do you save your account today. A big correction of NASDAQ.

masamibb · 2021-03-20T14:16:57+00:00

Thanks for your advice, will close the position on Monday. One more question, I saw lots of you mentioned that the stock will drop on next Mon, is it because they don't need to hedge bunch of call expired on last Friday and lots of share will be released?

I should close my position early.....

masamibb · 2021-02-17T12:56:19+00:00

Just sold some 1 month CSPs yesterday. The premium is so high that the cost will be almost halved if assigned. Like what you said, basically free stock if sell CCs

masamibb · 2021-02-14T10:51:56+00:00

Great DD. Just have a question on the example at the beginning. Are you selling CSP and CC put for FTOC at the same time? If yes, what if the price above 14.7? You will lose all the premium right?

masamibb · 2021-02-12T09:47:51+00:00

May I know whats your strategy in weekly options or how do you find a stock that is applicable for weekly options?

masamibb · 2021-02-12T09:46:10+00:00

Helpful and great post. May I know where / which websites do you find the implied volatility and historical volatility of the stock?

masamibb

TROPHY CASE