Visitor Visa - B2

Hi everyone,

This message board has been of immense help to me leading up to the interview so I'd like to share my experience so people can analyse my interview and help others succeed where I have not.

Profile:
24 y. o. Male
7.2 lakh p. a. annual compensation
3 years as a Risk Analyst at a top Investment Bank
Visitng relatives for 2 weeks
I'm not a Shah or a Patel

Interview:
VO was a middle-aged white man with a friendly appearance.

VO: Good morning, please passport.
Me: Good morning! (passes the passport)

VO: Why do you want to go the USA?
Me: To visit friends and family.

VO: So I see you're going to visit your brother?
Me: No, he's actually my Uncle, there's no "Uncle" option in the DS-160 dropdown so I selected the most relevant.

VO: Ah. What does your Uncle do?
Me: He's a VP in a leading Cloud-Computing start-up called High Radius

VO: And what do you do sir?
Me: I'm a risk analyst in a top investment bank, ZZZ.
VO: Excuse me, what was that?
Me: YYYY
(It's a very famous bank but he hadn't heard of it.)

VO: Okay, and how long have you been working at ZZZ?
Me: Almost 3 years.

VO: Have you travelled overseas before?
Me: Yes. Singapore.

VO: And for how long do you intend to travel to the USA?
Me: 2 weeks.

I thought the interview had gone pretty well up until this point and was almost positive I was getting a visa. He types for a while, turns to me and says -

VO: Sorry sir, under strict immigration laws I cannot give you a visa at this time. This paper will explain why. *hands me back my passport and 214(b)*

I had the following things to prove ties to country but wasn't asked about them so I didn't bring them up as I've seen many people advice against deviating from the VO's question:
1) Over 13 lakh INR in assets
2) Upcoming promotion
3) Quarterly review at my job due to which I couldn't extend my stay even if I tried
4) Entire family residing in India

I was not nervous or hesitant. I have a great command over the language, experience with public speaking and I was a picture of calmn and serentiy. I had an agent fill out my DS-160 which I realise after reading this forum was a mistake. He selected a few things incorrectly and I would have filled it out differently.

I do not know why my visa was denied. Views are appreciated so others can benefit. I'm planning on giving my GMAT and applying for Business School, so I'll be applying for an F-1 visa next year.

Thank you for taking the time out and reading this.