A customizabletrading simulatorfor professionals.
Buys, sells, and short-selling, with market, limit, stop, and TWAP/VWAP execution — all supported. It reproduces real fills, slippage, commission, and borrow, then tunes universe, risk, execution, and scoring to each firm's mandate.
Six layers,shaped to your spec
Nothing is fixed. When a competition (a single fund/program) is created, all six layers below are tuned — and you can override individual rules selectively.
Universe & Markets
Which markets, which names.
- ▸Target exchanges (KRX·US·JPX·TWSE)
- ▸Minimum market-cap floor
- ▸Instrument universe
Execution Physics
How realistically orders fill.
- ▸Slippage base · impact coeff.
- ▸Commission rate
- ▸Max participation rate
- ▸Allowed order & execution types
Risk Mandate
The limits the book must hold.
- ▸Net · sector · beta exposure
- ▸Single-issuer · concentration
- ▸Max drawdown (MDD)
- ▸Min long · short positions
Short & Borrow
How much short, at what cost.
- ▸Market-cap tiered borrow rate
- ▸Uptick rule on/off
- ▸Short-selling toggle
Scoring
What it takes to win.
- ▸Sharpe ratio weight
- ▸Total return weight
- ▸Risk mgmt · idea quality
- ▸Weights sum to 1.0
Market-Rule Overrides
Down to exchange rules, per competition.
- ▸Tick sizes
- ▸Daily price limit
- ▸Trading hours · settlement (T+N)
- ▸Commission override
The real market, your firm's rules
Like a game's physics engine reproduces the real world, ours reproduces how markets actually behave — fills, slippage, borrow. On top of it, the trading rules and difficulty are tailored to each firm. The numbers below are just defaults; the actual values differ per firm.
Execution · TWAP / VWAP
| Execution | Base fill price | Slippage mult. | Character |
|---|---|---|---|
| market | close | ×1.0 | Immediate, full, priciest |
| twap | (O+H+L+C) / 4 | ×0.3 | Time-weighted approx. |
| vwap | (H+L+C) / 3 | ×0.2 | Volume-weighted (typical) approx. |
| close | close | ×0.05 | Close fill, minimal slippage |
| open | open | ×0.05 | Open fill |
Slippage = ( base + impact × √participation ) × execution multiplier. The larger the order vs. volume, the worse the fill; above 5% the order is rejected to nudge toward TWAP/VWAP slicing.
Short Borrow · 대차 이자
| Market-cap tier (KRW) | Annual borrow rate | Borrow difficulty |
|---|---|---|
| ≥ 1T | 1.0% | easy to borrow |
| 300B ~ 1T | 3.0% | moderate |
| < 300B | 7.0% | hard to borrow |
| No cap data | 2.0% | flat fallback |
Borrow rates and the uptick rule are part of competition config. In line with retail paper-trading norms, default competitions don't charge borrow cost; it activates once a live KRX borrow-rate feed lands (v2).
Already in production use
A securities firm and an asset manager run competitions tuned to their own spec.
One preset changes the whole difficulty
Beginner has almost no friction and short-selling off; pro turns up slippage and commission and enables the uptick rule and low participation. Individual values remain fully overridable.
| Parameter | beginner | realistic | pro |
|---|---|---|---|
| Slippage base | 0.01% | 0.05% | 0.1% |
| Commission | 0.05% | 0.1% | 0.15% |
| Short-selling | off | on | on |
| Uptick rule | off | off | on |
| Max participation | 50% | 10% | 5% |
| Allowed execution | market·close | all | all |
Same engine, entirely different products
Configuration alone turns it into these different funds — no code changes.
| Fund profile | Preset | Short | Net exposure | Scoring emphasis |
|---|---|---|---|---|
| Market-neutral L/S | pro | on + uptick | ±5% | Sharpe · risk mgmt |
| Long-only growth | realistic | off | ~100% | Total return |
| Academy · training | beginner | off | relaxed | Idea quality |
| Regional · sector focus | custom | optional | custom | Sector limits |
Internal orclient-facing.
Internal
- ▸Strategy validation — test research ideas under real market friction
- ▸Recruiting · training — screen talent with academy competitions
- ▸Leaderboard — objective ranking by Sharpe and MDD
External
- ▸Client · partner competitions — deploy with rules matched to their spec
- ▸Alpha-capture programs — validate & collect external ideas on real physics
- ▸White-label — separate programs with tuned universe, risk, and scoring
Put your fund's specinto the engine
On the same trading physics engine, changing only the config layers runs everything from internal validation to external partner competitions.