Is the CQF Worth It for Quant Interviews?
7 min read A sourced, date-stamped look at what the CQF teaches versus what quant interviews actually test, and whether the fee is worth paying yourself. Read article
Tools & Reviews
Quant Finance
How Headlands Technologies Interviews Quants and Developers
8 min read A round-by-round look at the Headlands Technologies interview loop for quant researcher, trader, and software developer roles, with example questions and how its base-plus-bonus pay is structured. Read article
Quant Finance
Why a backtest Sharpe of 4 becomes 0.5 live
7 min read A backtest Sharpe of 4 usually lands near 0.5 live, and quant research interviews are built to test whether you know which biases ate the difference. Read article
Quant Finance
The 60/40 coin and how much of your bankroll to bet
7 min read Why the biased-coin bet-sizing question turns on maximizing growth rate rather than expected value, and how to answer it under pressure. Read article
Quant Finance
Correlation isn’t cointegration, and pairs-trading interviews test it
6 min read The spread, the hedge ratio, the stationarity test, and the backtest mistakes that get people cut from quant research rounds. Read article
System Design
Inside the FPGA interview at a low-latency trading firm
7 min read What a low-latency trading desk actually probes when it interviews FPGA and hardware engineers. Read article
Quant Finance
The statistics questions quant and data science interviews ask
7 min read The inference mistakes that sink quant and data science candidates are almost never arithmetic; they turn on what a p-value or a confidence interval really claims. Read article
Quant Finance
How Squarepoint interviews quant researchers and developers
7 min read A round-by-round look at Squarepoint’s quant researcher and developer interviews, from the HackerRank screen to the final dataset exercise. Read article
Quant Finance
What Quant Trading Is and How the Interview Actually Works
7 min read What quant trading firms actually do, how the trader interview runs from the 80-in-8 math test to market-making games, and the real questions with worked answers. Read article
Interview Prep
The logic puzzles quant firms ask that Google banned
8 min read How the classic brainteasers from Jane Street, SIG, and Optiver actually work, and the handful of patterns that sit behind all of them. Read article
Quant Finance
A quant probability cheat sheet that holds up live
6 min read The probability facts and reasoning patterns that come up most in trading interviews, and the setups that trip people up. Read article
Quant Finance
What the D. E. Shaw interview actually tests
6 min read A look at D. E. Shaw’s quant and developer interview loops, the probability and coding questions they ask, and how they grade your reasoning. Read article
Quant Finance
Two Sigma’s two interview tracks, and what each one grades
6 min read Two Sigma runs separate engineering and quant-research loops, and each one fails candidates for a different reason. Read article
Quant Finance
Citadel and Citadel Securities Are Not the Same Interview
6 min read Citadel the hedge fund and Citadel Securities the market maker are separate companies with separate loops, and prepping for one won’t carry you through the other. Read article
