After a meeting, Yoon Gihwan wanted to talk to Woosung in private.
âAre you aiming to become a quant?â
Quant.
If you buy at A and sell at C, you could profit 2 cents.
If you buy at D and sell at E, then you could profit 2.5 cents.
But If you sell A at C, you have a 20% chance of losing 7 cents.
If you sell D at E, then you have a 25% chance of losing 10 cents.
With the above premises, which scenario would give you the best chance of profiting the most in a month? A quant was a person who composed complex mathematical models to detect investment opportunities. Companies scouted talented quants. As a skilled quant, you could become successful in both finance and in reputation. You had to be smart, and Yoon Gihwan knew Woosung could be an incredible quant.
âI havenât decided yet.â
âReally? Then why do you want to know about algorithm trading?â
âThatâs not my goal but knowing about it can still make me rich.â
âSo you are thinking about opening your own business with it?â
Woosung followed with all honesty.
âI am trying to make it into my weapon.â
Yoon Gihwan, now more curious than ever, asked.
âAll right⌠but why do you want ME to teach you? If I was the best at algorithm trading, I wouldnât be working at a place like this.â
âI need your experience.â
Yoon Gihwan laughed.
âHahaha, newbie. You need something from ME?â
âMore like I need experience.â
âYet you still have been so rude to me?â
âAs you know, some experiences areâŚâ
âNot important?â
âSomething I can overcome with knowledge.â
âBut algorithm trading is different?â
Woosung sighed. There was no end to Yoon Gihwanâs questions.
âYou have a lot of questions.â
Yoon Gihwan nodded and played with his coffee cup.
âI have been working for 20 years in this field and I have never seen a newbie like you. Of course, I would be curious about you.â
âPlease teach me how to apply algorithm trading in real life and how to create an architecture in large scale. I need you to help me create a personal and stable algorithm to use in trading. Will you help me or not? I want no more of your questions.â
âAnd all I get is to keep my job as a general manager at Daesan, which is only a secondary outsource company to Nuri FinancesâŚâ
Swallow.
Woosung swallowed. After much thinking about his future, the answer he came up with was algorithm trading. It wasnât something that interested him. Only the best of the best can become a quant. He didnât know how Yoon Gihwan got into this field., he only knew of it because Yoon Gihwan mentioned when he was drunk.
âI became smarter after my death, so I think I could make money using the algorithm. If I can apply the concept to cryptocurrency dealing⌠I should be able to make a lot of money.â
Woosung was confident of the newfound intelligence he gained. What he has done so far was not something he could have done in his previous life. While Woosung was deep in his thought, Yoon Gihwan continued.
âI feel like I should get something more out of it. My experiences arenât cheap.â
âWell, if you feel that way, I guess thatâs that. I will look elsewhere.â
Woosung gave up easily. There was no guarantee Yoon Gihwan was good, anyway. Yoon Gihwan seemed confused.
âW-wait.â
ââŚâ
Woosung remained silent. Yoon Gihwan continued.
âLetâs do it together.â
âWhat?â
âI want to be your partner in whatever youâre planning.â
âCan you be more specific?â
âEven if algorithm trading doesnât work out, you will continue to try other things. I will be here to help you with whatever. All I want is for you to share your profit with me.â
This piqued Woosungâs curiosity.
âI am only a newbie, so how can you trust me, and how can I trust you?â
âI know you will succeed. My instinct tells me so. Even if you donât trust me, you can still use me till you donât need me anymore.â
Woosung closed his eyes. What should he do? He couldnât do everything by himself. He also needed help with algorithm trading.
âYouâll be able to help me in every way?â
Yoon Gihwan nodded. Woosung expected to have him as an enemy, but having a partner at his workplace could make things easier.
âI will let you have any vacation time, early leave, or late start. I can make things happen for you at work.â
It was a tempting deal. Woosung put out his hand and Yoon Gihwan shook it.
âThen letâs do it.â
âPerfect. I will teach you everything I know, and whenever you make a profit, you must share it with me.â
Woosung nodded.
They left the coffee shop and returned to the office. Woosung asked him questions he wanted to know. Unlike before, Yoon Gihwanâs manner of answering softened. Things felt right between them. They were even laughing together. Park Junwoo looked at them in confusion. Kim Yonggun also noticed the difference and asked Park Junwoo.
âManager, whatâs happening?â
âI donât know. I was worried they might have had a fight butâŚâ
âThey look so friendly now. What did the newbie do this time?â
âBelieve me, I wanna know too, itâs shocking to see Yoon Gihwan laugh like that.â
They stopped whispering as the two came close. Yoon Gihwan told them in an unusual caring voice.
âWhat are you guys still doing here? Itâs time to go home. Think of your families waiting for you.â
Park Junwooâs eyes widened.
Kim Yonggun became speechless.
Woosung looked at them and added.
âLetâs get going. The general manager has decided from now on, our department will follow the strict work hour.â
Park Junwoo asked in confusion.
âBut what about the problems the server team brought up todayâŚ?â
Woosung replied.
âI will take care of them first thing tomorrow. I have a good idea of what they are.â
Yoon Gihwan smiled and agreed.
âWell, that settles it then, right, or do you still want to work late?â
Kim Yonggun didnât need to ask a second time. He grabbed his bag and stood up.
âNope! I am ready to go home.â
He prompted Park Junwoo. When Park Junwoo stood up, Yoon Gihwan turned off his computer.
He murmured in disbelief.
âThis is the first time we all left on time⌠This feels so strange.â
Kim Yonggun nodded in agreement.
***
8PM.
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Woosung sat down at his desk at home with a book Yoon Gihwan recommended. It had a title of âBasics of Algorithm Trading.â
âThe biggest opportunity occurs when there is a big change in the market. This could be my way to make money during the financial crisisâŚâ
Even if he couldnât make enough money during the financial crisis in October 2008, he could still make more with cryptocurrency. The more chances he took, the better. Woosung focused and opened the book.
-History of algorithm trading
The 300-page book started with the history of the system. As he read, Woosung again confirmed he was now smarter. Unlike in his previous life, it was now so easy to comprehend any information. It was effortless; he felt the joy of learning. He used to not be able to read for more than an hour, but now he read the entire book in one sitting.