Desk screens graded in your browser
Short, timed-feel interview screens that mirror the real online assessments and technical rounds. Answer in the browser and get an objective score instantly numeric, multiple-choice and table checks are auto-graded; judgement items come with a mark scheme.
Grading runs locally on our server, free no AI, no external services.
Free to try no account needed
Probability & Expected-Value Screen
A free, instantly-graded run through the dice, coins and betting-game questions that open quant and trading first rounds.
Python Quant Screen
Write and run real Python in your browser short finance functions, graded on their outputs. Free, no account needed.
[QR] Quant Research & Quant Trading
view pack →Options & Greeks Quick-Fire
Put-call parity, payoffs, delta-hedging and the Greeks the options quick-fire that opens quant-trading and market-making technicals.
Mental-Math & Estimation Sprint
The no-calculator arithmetic sprint that opens prop-firm assessments built for Timed mode.
Statistics & Backtest Pitfalls
Beta, Sharpe, portfolio vol, correlation bounds and the biases that kill a backtest the quant-research screen in full.
Quant Coding Round
The Python coding round for quant research and quant dev returns, risk, microstructure and Black-Scholes, run and graded in the browser.
[TR] Trading & Execution
view pack →Market-Making & EV Desk Game
Re-roll games, pot odds, fair-value quoting, adverse selection and payoff PnL the trading-game maths a desk screens for.
Options Payoff & Strategy Recognition
Name the structure, find the breakevens, size the max profit and loss the options payoff round prop desks drill hardest.
Number Sequences & Fast Maths
Spot the pattern, get the next term, and rip through the arithmetic the NumberLogic-style speed screen, built for Timed mode.
Trading Coding Round
The trader's Python round EV & Kelly, option payoffs, market-making PnL and inventory skew, run and graded in the browser.
[TO] Trading Operations & Middle Office
view pack →Reconciliation & Settlement Triage
Classify breaks, value them, order the trade lifecycle, compute settlement dates and fail penalties, and clean a blotter the objective core of an ops take-home.
PnL Attribution & Control
Explain the day's move: sensitivity PnL, the attribution bridge, the unexplained residual, and flash vs actual middle-office product control in numbers.
Blotter Validation & Data-Cleaning
Spot the bad rows in a messy trade blotter, compute the clean totals, and know the rules the attention-to-detail ops test in depth.
Corporate Actions Processing
Classify events, compute dividend, split, bonus and rights entitlements, and apply ex-date and election rules the everyday accuracy an asset-servicing seat is screened on.
Margin & Collateral
Variation and initial margin, margin calls, collateral haircuts, eligibility and netting the daily collateral-ops arithmetic, done to the pound.
Operations Coding Round
The ops/data Python round reconciliation, settlement dates, blotter validation, FIFO PnL and FIX parsing, run and graded in the browser.
[RK] Risk (Market, Credit & Model Risk)
view pack →Market Risk & VaR Screen
Parametric and historical VaR, square-root-of-time scaling, Expected Shortfall, coherence and diversification the objective core of a market-risk screen.
Credit & Counterparty Risk Screen
Expected loss, exposure, netting, wrong-way risk and CVA the objective core of a credit and counterparty-risk screen.
Risk Coding Round
The risk-quant Python round parametric VaR, square-root-of-time scaling, Expected Shortfall, diversification, expected loss and backtest exceptions, run and graded in the browser.