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OA
Orbital ATK Inc
stock NYSE

Inactive
May 23, 2025
30.16USD-77.576%(-104.34)200
Pre-market
0.00USD0.000%(0.00)0
After-hours
0.00USD0.000%(0.00)0
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OA Reddit Mentions
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We have sentiment values and mention counts going back to 2017. The complete data set is available via the API.
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OA Specific Mentions
As of Jul 12, 2026 6:55:13 AM EDT (1 min. ago)
Includes all comments and posts. Mentions per user per ticker capped at one per hour.
6 hr ago • u/Ok-Warning-9375 • r/quantfinance • should_i_transfer_my_career_path_from_data • B
Hey guys. Is there anybody knows the recruitment market in European quant company. I tried this summer to find a internship in Optiver. Fortunately, I passed the OA and get an interview opportunity but failed in the behavior round. I'm a master student in DS locate in France and hold a Finance bachelor, is it worth for me to invest my time in a position like quant research or trading? I propose I don't aim to be hired by the top quant, but some small or middle one.
I'm recently reading the greenbook, studying stochastic calculus and PDE. I'll be glad if you have any suggestion or advice for me.
sentiment 0.83
6 hr ago • u/Sea-Friendship7961 • r/quantfinance • imc_oa_timeline_qt_27_internship • C
Anyone know how long it takes to hear back after the OA?
sentiment 0.00
6 hr ago • u/Forsaken_Grand_2363 • r/quantfinance • should_apply_to_optiver • C
From OA to first round they gave me a week to schedule. After that I had a couple days. This was Chicago QT tho
sentiment 0.55
12 hr ago • u/Delicious_Window_948 • r/quantfinance • optiver_2027_qt_technical_round • C
LIke 2 days after I did OA
sentiment 0.36
15 hr ago • u/Professional_Dog1686 • r/quantfinance • imc_qt_2027_oa • C
I thought they screened after the OA, but if it's before then an easy test makes even less sense as a filter.
sentiment 0.59
18 hr ago • u/AdeptAssignment6744 • r/quantfinance • imc_qt_2027_oa • C
They do a resume screen before the OA and they explicitly say that.
sentiment 0.00
18 hr ago • u/Professional_Dog1686 • r/quantfinance • imc_qt_2027_oa • C
and that's exactly why the resume screen after is so brutal, they let everyone through the OA then cut 90% based on school name
sentiment -0.81
19 hr ago • u/kimyj78 • r/quantfinance • optiver_qt_2027_oa_rejection • C
What’s a good way to prepare for the OA? I’ve read that tradermath.com is a good prep source, but not sure about how to prep for the trading game mentioned.
Does QuantGrind support this? Or, are there any good ways to prepare for such? Thanks
sentiment 0.92
20 hr ago • u/raccoon_lover1224 • r/quantfinance • imc_qt_2027_oa • T
IMC QT 2027 OA
sentiment 0.55
1 day ago • u/KeitaroSegawa • r/phinvest • first_time_investor_at_29 • C
I know you are starting and doing research — but just want to share some insights.
I highly recommend investing to Ireland Domiciled (ID) stocks — this is because of the tax events percentage. ID has way cheaper tax rate to non-US residents compared to investing to US Domiciled stocks.
Also, since you have started investing to GoTrade which I dont recommend din due to high fees, try to research about IBKR, it is way cheaper compared in using GoTrade, maybe the additional funds that you will invest pwedeng sa IBKR na.
Consider these ETFs to para diversified:
SMH.L
SPY.L
VUAA.L (kahit yung SPY.L nalang, cheaper kase yung annual management fees)
I’m considering yung technology ETFs — pero baka magoverlap na. If nagoverlap, oks lang basta wag OA.
Not an expert advise, personal experience lang.
sentiment -0.02
1 day ago • u/Extreme-Quantity-764 • r/quantfinance • anybody_take_the_sig_codesignal_oa_for_summer_2027 • T
Anybody take the SIG Codesignal OA for summer 2027?
sentiment 0.00
2 days ago • u/QuantGrindApp • r/quantfinance • optiver_qt_2027_oa_rejection • C
If you're still shaky on the distribution stuff in greenbook I'd hold off, that's exactly what the OA leans on and you don't want to eat a cooldown on a round you weren't ready for. Optiver's early stuff is mostly speed and probability under a clock, so it's less about grinding for months and more about getting the mental math automatic and the common distributions (poisson, exponential, order stats) cold. A few focused weeks does more than a slow half year. I run QuantGrind which is basically a bank of these brainteasers/interview problems if you want somewhere to drill them, happy to share the link. Spring recruiting will still be there next cycle if you miss it, the cooldown feels worse than it is.
sentiment 0.04
2 days ago • u/Suryansh_Singh247 • r/quantfinance • seeking_honest_advice_breaking_into_quant • C
dude I'm from a non-IIT school and IMC didn't send me an OA, most firms don't even reply to tier 3 grads. Susquehanna, HRT are among the only ones I got OA from
sentiment 0.00
2 days ago • u/Material_Tradition18 • r/quantfinance • optiver_career_kickstarter_trading_research • C
Hey I did the OA for this as well but haven’t gotten a response. When did you do the OA?
sentiment 0.14
2 days ago • u/Dry-Advertising2080 • r/quantfinance • optiver_career_kickstarter_trading_research • B
Hi guys,
I recently passed the Optiver OA and have been invited to a behavioural interview with a campus recruiter.
For those who have gone through the Optiver process recently:
1. Besides standard behavioural questions, is there anything else I should prepare for?
2. Are there any brainteasers, mental math questions, probability questions, or trading games (e.g. market making exercises)?
3. What are the interview rounds after the behavioural interview, and what does each round typically focus on?
Would really appreciate any recent experiences or advice. Thanks! 🙏
sentiment 0.77
2 days ago • u/raccoon_lover1224 • r/quantfinance • optiver_qt_2027_oa_rejection • C
Its a small trading game at the end, it was actually quite fun compared to the rest of the OA
sentiment 0.56
2 days ago • u/Jinnnxxxnacs • r/quantfinance • ctc_am_i_cooked • B
Hey so currently in the loop for Chicago Trading Company (CTC) Associate Engineer role. Everything I *thought* was going well, had my OA, recruiter screen and first round technical screening. After the screening a week later, recruiter emailed me back saying they wanna move me forward to the final rounds, and that a coordinator would be in touch for this.
Thing is, it’s been a week since that email where the recruiter said the coordinator would be in touch, and absolutely nothing. Followed up with the recruiter, crickets. Am I just naive but if the recruiter said I passed and that the coordinator would be in touch to schedule the final rounds, shouldn’t that have happened by now? Feels like I just got fully ghosted and it’s just a rejection. In total its been two weeks since my first round screening. Am I cooked? 😭😭
sentiment -0.91
2 days ago • u/MaxPayne4life • r/stocks • netflix_is_down_42_from_its_high_and_trading • C
I'll happily watch new seasons of The OA with ads.
Fuck it, even if they do it like tv channels where they put 5 minute ad breaks then i'd be fine too but only for the OA
sentiment 0.30
2 days ago • u/False_Anywhere_1500 • r/quantfinance • optiver_quant_researcher_oa_not_sure_what_they • C
I applied to the role in Amsterdam and got my OA yesterday. How did your OA go? What sort of questions you got in Quantitative Research Test  could you please help me
sentiment 0.61
2 days ago • u/Constant-Grocery-486 • r/quantfinance • told_to_prepare_for_an_interview_then_rejected • C
Even when one does well on the OA does that still matter?
sentiment 0.30


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