Make Me a Market

QT · Voice (simulated)Round 1/5

Sum of 5 dice × 2.5. Quote 2-wide markets under a 15s shot clock while the interviewer trades on information you don't have.

Demo with synthetic prices and play money. Not investment advice.

VOICE SIMULATED

demo · no microphone used

Shot clock

Voice & Market Dialogue

● REC

Contract settles at 2.5× the hidden sum of 5 fair dice. Prior fair = 43.75.
You44 at 46.
InterviewerI lift your offer at 45. Again.
You45 at 46… fine.
InterviewerI lift your offer at 46. You are short 2 lots. New signal: at least one die is a 6. Make me a new 2-wide market!

Interviewer speaking

SpaceHold to speak
BBid
AAsk
SSkew
↵Send

Quote Execution & Order Book

MAX WIDTH 2.00

Avellaneda–Stoikov Inventory Skew

Inventory Q_t = -2Risk limit ±10

−10 SHORTFLATLONG +10

Risk aversion γ = 0.25σ² = 2.00

Reservation r48.95

Skew vs fair+1.00

Rec. quote48.0 @ 50.0

r = s − q·γ·σ²(T−t)

SIMULATED DEPTH · YOUR QUOTE vs SIMULATED TOXIC FLOW

Simulated Risk & Performance

play money · $25/pt

+$1,250SIMULATED PnL

−$4205 marks

PnL−$122

Sharpe-0.49

P(Ruin −$1k)56.6%

Inventory-2

Adverse Selection Meter15/100

1 of 2 fills traded against you by informed flow · −$61 edge lost

Fills

SELL 1@ 46TOXIC
SELL 1@ 45clean

Level 2 Order Book

SIMULATED · TICK 0.25 · 10 LVLS

Best bid48.75 ×9

Best ask49.00 ×5

Spread0.25 1t

Mid48.875

Microprice48.911

Last48.88

BID 55 · 47%TOP-5 IMBALANCE · book +0.92 vs your fair53% · 61 ASK

YOUR BID 47 7t behind touch · low fill probability

YOUR ASK 49 joins touch · queue behind 5 lots

OrdTotalSizeBid

29948.75

2201148.50

329948.25

237848.00

4551847.75

4741947.50

9972347.25

712730YOU47.00

71573046.75

81782146.50

AskSizeTotalOrd

YOU49.00551

49.257122

49.5012242

49.7516403

50.0021614

50.2521826

50.50291119

50.75271387

51.00171556

51.25221775

Time & SalesVOL 0 · VWAP —

TimePriceQtyAggr

Waiting for prints…