ivolatility-backtesting 2.139

A universal backtesting framework for financial strategies using the IVolatility API.

IVolatility Backtesting Framework v1.32

A universal options backtesting framework powered by the IVolatility API.

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Supported Strategies

Strategy	Description	Use Case
STRADDLE	Long/short ATM call + put	Volatility plays
STRANGLE	Long/short OTM call + put	Wide volatility plays
IRON_CONDOR	Short strangle + long wings	Range-bound income
VERTICAL	Bull/bear call or put spreads	Directional bets
CALENDAR	Same strike, different expiry	Time decay plays

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Core Features

Data & Caching

• EOD + Intraday bars - Both timeframes supported for stocks & options
• IVolatility API integration - Options chains, underlying prices, IV data, earnings calendar
• DuckDB caching - Local storage for fast repeated backtests
• ASYNC parallel loading - ~10x faster data preload
• Connection pooling - ~5x faster API calls

Run Modes

Mode	Function	Use Case
Single Run	run_backtest()	Test one specific configuration
Baseline	run_optimization(run_baseline=True)	Reference benchmark (combo_id=0)
Combinations	run_optimization()	Grid search to find optimal params
Chunked	run_optimization_chunked()	Large grids with memory management

Single Run

Run one backtest with fixed parameters. Use for testing a specific strategy configuration.

results = run_backtest(strategy_fn, config)

Baseline

Reference run using base_config values before testing combinations. Saved as combo_id=0 for comparison.

all_results = run_optimization(
    base_config=config,
    param_grid=param_grid,
    run_baseline=True  # combo_id=0 uses base_config values
)

Combinations

Grid search across all parameter combinations. Each combo gets a unique combo_id.

param_grid = {
    'z_entry': [-2.0, -1.5, -1.0],
    'z_exit': [0.5, 1.0],
    'dte_target': [30, 45]
}
# Runs 3 × 2 × 2 = 12 combinations + baseline = 13 total
all_results = run_optimization(
    base_config=config,
    param_grid=param_grid,
    run_baseline=True
)

Chunked Optimization

Memory-efficient mode for large parameter spaces. Processes in batches.

run_optimization_chunked(
    base_config=config,
    param_grid=large_grid,  # 1000+ combinations
    chunk_size=50,
    run_baseline=True
)

Supported Indicators

Indicator	Source	Description
iv_rank	Options	Current IV position in historical range (0-100)
iv_rank_ivx	IVX API	IV Rank from pre-calculated IVX data (faster)
iv_percentile_ivx	IVX API	IV Percentile from IVX data
iv_lean_zscore	Options	Call-Put IV spread normalized (mean reversion)
iv_lean_zscore_ivx	IVX API	IV Lean Z-score from IVX (faster)
iv_term_structure	IVX API	Volatility curve slope across tenors
iv_skew	Options	Put/Call IV skew at target delta
vix_percentile	VIX	VIX percentile rank over lookback
realized_vol	Stock	Historical volatility (annualized)

Entry Signals

• Threshold-based - Enter when indicator crosses level
• Z-score signals - Mean reversion entries
• Delta-based selection - Select strikes by delta target
• Custom indicators - Extensible via INDICATOR_REGISTRY

Position & P&L Management

• PositionManager - Track open positions, calculate real-time P&L
• Greeks tracking - Delta, gamma, theta, vega per leg
• Capital at risk - 1.5x safety buffer for EOD backtests
• Multi-leg support - Spreads, condors, straddles

Exit Management (StopLossManager)

• DTE-based exit - Close at target days to expiry
• Stop-loss types:
  • Directional (underlying moves X%)
  • P&L-based (position loses X%)
  • Combined (both conditions required)
• Profit targets - Close at X% gain (same manager handles SL + PT)
• Intraday monitoring - Check stops on each bar
• Earnings blackout - Skip entries near earnings dates

Analytics & Reporting

• BacktestAnalyzer - Sharpe ratio, max drawdown, win rate, profit factor
• Equity curve - Track portfolio value over time
• ResultsReporter - Generate summary tables and statistics
• Trade-level details - Entry/exit prices, Greeks, stop levels

Visualization (ChartGenerator)

• Equity curve charts - Portfolio growth over time
• Drawdown analysis - Visualize underwater periods
• Stop-loss analysis - Compare exit reasons
• Optimization heatmaps - Parameter sensitivity
• Monthly returns - Calendar view of performance

Optimization

• Parameter grid search - Test multiple configurations
• Parallel execution - Run combinations concurrently
• Memory-efficient chunking - Handle large parameter spaces
• Results comparison - Side-by-side analysis

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Architecture

┌─────────────────────────────────────────────────────────┐
│                    User Notebook                        │
├─────────────────────────────────────────────────────────┤
│  run_backtest() / run_backtest_with_stoploss()         │
├──────────────┬──────────────┬───────────────────────────┤
│ PositionMgr  │ StopLossMgr  │ DuckDBIndicatorManager   │
├──────────────┴──────────────┴───────────────────────────┤
│              OptionsChunkManager (async)                │
├─────────────────────────────────────────────────────────┤
│              DuckDBCacheManager                         │
├─────────────────────────────────────────────────────────┤
│              APIManager → IVolatility API               │
└─────────────────────────────────────────────────────────┘

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Key Classes

Class	Purpose
APIManager	Unified API access with auth
DuckDBCacheManager	Persistent data caching (EOD + intraday)
OptionsChunkManager	Async parallel data loading
DuckDBIndicatorManager	Pre-calculate & cache indicators
PositionManager	Track positions, calculate P&L, manage Greeks
StopLossManager	Monitor stops + profit targets (intraday capable)
StrategyRegistry	Strategy definitions & metadata
BacktestAnalyzer	Calculate metrics: Sharpe, drawdown, win rate
ResultsReporter	Generate summary tables & statistics
ChartGenerator	Create equity curves, heatmaps, analysis charts

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Quick Start

from ivolatility_backtesting import run_backtest, preload_data

# Configure
config = {
    'symbol': 'SPY',
    'start_date': '2024-01-01',
    'end_date': '2024-12-31',
    'strategy_type': 'STRADDLE',
    'dte_target': 30,
    'entry_signal': 'iv_rank',
    'entry_threshold': 50,
}

# Preload data (uses async for speed)
preloaded = preload_data(config)

# Run backtest
results = run_backtest(
    strategy_function=straddle_strategy,
    config={**config, **preloaded}
)

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Performance

Metric	Before v1.32	After v1.32
Data preload	~60s	~6s (10x faster)
API calls	Sequential	Pooled (5x faster)
Memory usage	High	Chunked (stable)
DuckDB stability	Crashes	Legacy mode (stable)

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Integration with Claude

Use system_straddle_simple_20260206.promt as a system prompt to have Claude generate backtesting notebooks. Claude will:

1. Ask about strategy parameters
2. Generate complete notebook code
3. Include stop-loss/profit-target configuration
4. Add earnings blackout if requested

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Links

• GitLab: gitlab.ivolatility.com/ivolatility/ivolatility-backtesting
• API Docs: ivolatility.com/api/openapi.yml
• Changelog: See CHANGELOG.md in repo