Why do people not get return offers?

Recently talked to an analyst, and he told me that generally if you're hired as an intern, there's a spot for you in full-time. Banks want you to return, and historically, everyone who hasn't gotten a return offer was just someone who was stupid or something, like making careless mistakes or coming off as too cringe/hardo.

I keep freaking myself out at return offer rates that are like around 70-80%, but is it really true that the other 20-30% of interns are just interns that were really just bad workers? He was telling me how getting a return offer was a lot easier than you would expect, like all I have to do is not be dumb, and he thinks the virtual environment will make it even easier. He told me that I'm underestimating the amount of people who lack common sense/are just actually stupid who get an internship offer, and really thinks that I don't have to worry. Can anyone offer any insight on this?

Yeah, there will for sure be a couple interns who will do stupid things and be idiots like ask stupid questions or don't fit with the group. People who are socially awkward and plain weird af are not going to do well in banking and will not receive an offer. we're in a client facing role so they have to take into account this. Know a couple Yalies who didn't get an offer at banks like STRH and HL because they were awkward AF Ask yourself if you think you've been called awkward before. Then ask your firends and family. They'll tell yo if you're weird. If they say yes, then really work on yourself and make sure you don't screw yourself over.

Will update my computer soon and leave Incognito so I will disappear forever. How did I achieve Neanderthal by trolling? Some people are after me so need to close account for safety.

Thanks Richard.3 for the solid answer, usually you're trolling but this seems like a legit answer, thanks for not trolling this time, you're finally growing up and it makes me really proud.

Dude, I'm an experienced professional and I know my shit - wiser than most. What do you expect?

My trolling is done for my personal pleasure as I am a well-ranking individual otherwise

Will update my computer soon and leave Incognito so I will disappear forever. How did I achieve Neanderthal by trolling? Some people are after me so need to close account for safety.

Lol. kids, don’t listen to Richard.3. He doesn’t know his shit. Banks care about your smarts only. Your ability to generate revenue is the number one thing the bank cares about. If you act weirdly or awkwardly but you have the honest potential to become a big revenue generator, the bank will beg you to stay.

If you act weirdly or awkwardly but you have the honest potential to become a big revenue generator

These are mutually exclusive.

Will update my computer soon and leave Incognito so I will disappear forever. How did I achieve Neanderthal by trolling? Some people are after me so need to close account for safety.

Thinking you're a revenue generator as a summer analyst is a sure way to not get that return offer

Generally speaking if you show up, put your head down and maintain a good attitude you are fine and will get your offer. All interns are awkward, so I wouldn't worry about that too much. There are going to be a few cases of people who do all of the above and the group simply doesn't have enough spots available, but usually it is pretty obvious who isn't going to get one. Bear in mind that the analysts / associates are the ones who generally provide 90% of the feedback that gets used in deciding who gets / doesn't get an offer. Below are a few reasons I've seen of people not receiving an offer / tips on how to make sure you get yours.

1. Some sort of idiotic behavior outside of the office / at intern events or otherwise. Go out with your analysts if they take you out, but be responsible, know your limits. If you aren't 21 yet, then don't drink at office events. If you have a fake ID, please don't use it when you're out with your colleagues or at an office event. You'd think this would be obvious, but I've literally seen people do this and get in trouble with HR and not receive an offer.
2. Show up on time. If you are asked to come to the office on a Saturday, come in at the agreed time. If everyone shows up by 9am daily, come at 9am daily. And be able to understand how late you need to stay -- I'm not saying to put in face time, but don't leave at 5pm if you're done with your work when everyone else is clearly sitting there. On the other hand, don't be the intern that feels it is necessary to stay until 3am, when everyone knows you aren't working on anything (and also charging overtime hours to the firm). Have seen interns show up 1-2 hours later than agreed on the weekend (they had gone out the night before and came in hungover) and this really irritated the analyst / associate they were working with (and rightfully so).
3. Don't talk back or argue with your analyst / associate, and don't be a know it all. You might very well be smarter or have more finance knowledge than them (honestly, a lot of IB associates are quite weak in many areas), but please don't show it as an intern. If you're in a meeting with your team, don't feel you need to voice your opinion or speak unless asked to speak by the MD. Some people might push back on that as 'bad culture,' but as an intern you're expected to listen and learn, nobody is expecting you to really add meaningful value.
4. Check your work. Mistakes are fine, ask questions if required, but don't be sloppy. And if you make a mistake once and it gets caught, make sure the same mistake isn't repeated. This is cliche but it's true.
5. Try to be proactive. It can be difficult for analysts to delegate work to interns because it honestly often ends up taking more time explaining and there isn't much value added. Speak to the analysts if you can help with anything, communicate, ask if you can see what they are doing. Do all of this while also understanding what sort of hours they are working / how slammed they are getting to make sure you're not being annoying. Check with your analyst before you leave if there is anything else you can help with -- any good and sensible analyst will be happy / encouraging of you to leave before them if there isn't work for them to give you, no need for you to sit around until late night just because they are.

The bar at most banks / groups is very low in terms of what to do to get your offer, and the quality of your work output is much less important then your demeanour, attitude, etiquette and self-awareness.