01
See the pattern
Worked problems teach the underlying move: condition correctly, find the invariant, price the uncertainty.
300+ worked questions
Expected value
E[X] = Σ x · P(X=x)
Worked from first principles
The interview prep deskBuild the
Build the
instincts the
interview expects.
Quant interview prep built around active decisions: solve the problem, quote the market, explain the edge, then do it faster.
Live drill / 04
00:42
Conditional probability
EasyQ. 184
Pick one
A biased coin lands heads 60% of the time. It just landed heads. What is the probability the next flip is also heads?
Make the call
Your explanation matters as much as the number.
Prep paths for
Jane StreetOptiverCitadelSIGIMCHudson River TradingAkuna CapitalDRW
The method / 01—03
Preparation should change how you think.
02
Build the speed
Short, timed sets turn arithmetic and estimation into automatic recall before interview pressure arrives.
80 questions / 8 minutes
Speed arithmetic06:17 remaining
47×18
54 / 80 correct
03
Make the market
Games force you to quote, size, update, and manage risk while the information changes around you.
Six live trading formats
Your bid
42
Your offer
48
Market width: 6Edge +2.4
Interview readiness
Know what to practise next.
Turn your assessed game results into a skill profile, track your progress, and get a recommendation for your next session.
Example report
Illustrative data · Included with paid plans
Overall readiness
68/100
+7 over six sessions
See how your performance changes as you complete assessed sessions.
Skill profile
Numerical Fluency
76 out of 100
Estimation & Calibration
58 out of 100
Probability & Valuation
71 out of 100
Market Judgment & Risk
64 out of 100
Your next focus
Mock Market Making
Your probability work is progressing. Focus your next session on quote calibration to build on it.
Built for the whole process
From “where do I start?” to desk-ready.
What changes
“
The timed mental math drills were the thing that actually got my arithmetic to interview pace. The content builds real intuition, rather than just pattern matching.
Quantitative Analyst, IMC
Full access
Train seriously.
Interview differently.
Start free, then unlock every question, drill, game, guide, and readiness signal when you are ready.
Flexible access
Choose a plan that fits your timeline.
01 / Fortnightly
Cancel any time
$29every 2 weeks
02 / Monthly
Cancel any time
$39per month
03 / Yearly
Billed $300 yearly
$25per month
Everything included
Same complete toolkit on every plan
Free access available
Why this exists
“I built the resource I needed when I was trying to break in.”
I came to quantitative trading from medicine, without the conventional finance background or a clear playbook. I had to learn what the interviews actually rewarded: speed, structured thinking, and sound decisions under pressure.
That path led to a quantitative trading internship at SIG. QuantTrading.io turns what I learned into the structured, practical preparation I wish I'd had from the start.
Dr Julian Kam
Founder & CEO · Medical doctor · Former SIG intern