manifoldbt

ManifoldBT is a Python backtesting library with a Rust core. Strategies are written in a fluent Python DSL, compiled to a vectorized Rust expression graph, then run through a sequential fill simulation with realistic fees, slippage, funding and look-ahead protection. Vectorized speed with event-driven execution realism.

Why ManifoldBT

Fast: 10M bars in 317 ms. 78x faster than vectorbt, 308x once you also want drawdown and Sharpe, ~3,500x faster than backtrader. Measured in public CI, every run linked.
Expressive: fluent DSL with 30+ indicators, conditional logic, cross-asset references
Rigorous: Monte Carlo, walk-forward, parameter sweeps, lookahead detection, exposure diagnostics
Portable: pip install, no Rust toolchain needed. Works on Python 3.9+.

Installation

pip install manifoldbt              # engine only: backtests, sweeps, metrics
pip install manifoldbt[plot]        # + interactive charts and native windows (show=True)
pip install manifoldbt[all]         # everything: plots, windows, PNG export, pandas/polars
pip install manifoldbt[gpu]         # + NVIDIA runtime compiler, for device="cuda" (Pro)

The base install stays light (no browser, no GUI) for scripts, servers and CI. [plot] adds plotly and a native window backend; [all] also pulls kaleido for static PNG/SVG export (which bundles a headless Chromium).

The Linux and Windows x86_64 wheels already carry the CUDA kernels, so [gpu] only adds the NVIDIA runtime compiler (~180 MB) that compiles them on your machine. Skip it if you already have a CUDA toolkit installed. An NVIDIA driver is required, and GPU acceleration is a Pro feature; everything else runs at full speed on the CPU.

Quick Start

import manifoldbt as mbt
from manifoldbt.indicators import close, ema
from manifoldbt.helpers import time_range, Interval, Slippage

fast = ema(close, 12)
slow = ema(close, 26)

strategy = (
    mbt.Strategy.create("ema_crossover")
    .signal("fast", fast)
    .signal("slow", slow)
    .signal("signal", mbt.when(fast > slow, mbt.lit(1.0), mbt.lit(-1.0)))
    .size(mbt.col("signal") * mbt.lit(0.25))
)

start, end = time_range("2022-01-01", "2025-01-01")

config = mbt.BacktestConfig(
    universe=[1],
    time_range_start=start,
    time_range_end=end,
    bar_interval=Interval.hours(12),
    initial_capital=10_000,
    execution=mbt.ExecutionConfig(allow_short=True, max_position_pct=0.5),
    fees=mbt.FeeConfig.binance_perps(),
    slippage=Slippage.fixed_bps(2),
    warmup_bars=30,
)

store = mbt.ingest(provider="binance", symbol="BTCUSDT", symbol_id=1,
                   start="2022-01-01T00:00:00Z", end="2025-01-01T00:00:00Z", interval="1h")
result = mbt.run(strategy, config, store)
print(result.summary())

Loading data

Bring your own data, or pull it from a built-in connector. Both return a DataStore ready for mbt.run(...).

CSV, free on all tiers, auto-detects standard / MetaTrader 4 / MetaTrader 5:

store = mbt.import_csv("EURUSD_1m.csv", symbol="EURUSD", symbol_id=1,
                       interval="1m", asset_class="forex")

Market data connectors: Binance, Bybit, Hyperliquid, dYdX, Bitstamp, Yahoo Finance (free); Databento, Massive (Pro):

store = mbt.ingest(provider="binance", symbol="BTCUSDT", symbol_id=1,
                   start="2024-01-01T00:00:00Z", end="2025-01-01T00:00:00Z")

Yahoo Finance covers stocks, ETFs, indices (^GSPC), FX (EURUSD=X), futures (ES=F) and crypto (BTC-USD) without an API key. Prices are dividend-adjusted, like yfinance's auto_adjust=True; pass dataset="raw" for unadjusted quotes. Yahoo's own history limits apply: 1m over the last 30 days, 1h over ~2 years, daily back to the listing date.

store = mbt.ingest(provider="yahoo", symbol="AAPL", symbol_id=1, interval="1d",
                   asset_class="equity",
                   start="2015-01-01T00:00:00Z", end="2026-01-01T00:00:00Z")

Or from the CLI:

manifoldbt import-csv data.csv --symbol EURUSD --symbol-id 1 --interval 1m
manifoldbt ingest --provider binance --symbol BTCUSDT --symbol-id 1 --start ... --end ...

Examples

#	Example	What it shows
00	Template	Minimal starting point
01	Trend Following	EMA crossover, volume filter, stop-loss
02	Mean Reversion	EMA crossover with parameter sweep
03	Multi-Asset Momentum	Cross-asset signals
04	Linear Regression	Regression-based signal
05	Statistical Arbitrage	Pairs trading, spread z-score
06	Full Visualization	Tearsheet and charts
07	Walk-Forward	Out-of-sample validation
08	2D Sweep	Parameter grid heatmap
09	3D Surface	Parameter surface plot
10	Monte Carlo	Permutation-based robustness
11	Portfolio	Multi-strategy portfolio
12	Diagnostics	Lookahead & exposure safety checks
13	Stochastic Simulation	SDE path simulation (GBM, Heston, …)
14	Multi-Timeframe	Combining signals across timeframes
15	Cross-Exchange	Signal on one venue, execute on another
16	Exogenous Data	External series (e.g. hashrate) as a signal
17	Per-Venue Fees	Per-venue funding & borrow costs
18	CSV Import	Load OHLCV from CSV (standard / MT4 / MT5)

Performance

Every number below comes from a benchmark that runs in public CI on a standard GitHub runner, and links back to the run that produced it. It installs each engine from PyPI the way a user would, generates its own data, checks that the engines produced the same result, and only then reports how long each took: a workload they disagree on gets no published timing at all.

Latest run: #11 ran on Linux x86_64, 4 vCPU, Python 3.12, manifoldbt 0.17.3 / vectorbt 0.28.4 / raptorbt 0.9.0, 3 interleaved repetitions.

Workload	Bars	ManifoldBT	vectorbt	raptorbt
SMA crossover	10M	317 ms	24.75 s (x78)	878 ms (x2.8)
...with drawdown, Sharpe, Sortino, volatility	10M	317 ms	97.46 s (x308)	894 ms (x2.8)
...with a 5 bps fee and 2 bps slippage	10M	316 ms	24.53 s (x78)	not supported
EMA + RSI filter, 5 bps fee	1M	52 ms	2.21 s (x41)	not supported
Five assets in one book	1M	140 ms	2.34 s (x17)	not supported

The second row is the one worth reading twice. Asking for a performance summary costs ManifoldBT nothing measurable, because it computes one during the run whether you read it or not, and costs vectorbt 73 seconds, because it defers the equity curve until a risk metric needs it and then has to build one.

The fifth row is the one where ManifoldBT does worst, and it is published for that reason: broadcasting a column per asset is close to free for vectorbt, while walking five books is not free for anything.

Parameter sweeps

Bars	Combinations	ManifoldBT	vectorbt	raptorbt
20,000	5,000	446 ms, 40 MB	5.84 s, 2.5 GB	7.08 s
200,000	10,000	9.96 s, 79 MB	out of memory	164.50 s

Past a certain grid the question stops being speed. vectorbt materialises the simulation per combination, 1.57 MB of it at 20,000 bars, so the second row would ask a machine for tens of gigabytes. ManifoldBT runs it in ten seconds inside 79 MB.

Reproduce any of it yourself: fork the repository and press Run workflow on the benchmark, or run it locally from benchmarks/vs_vectorbt/. The method, the parity gate and the known divergences are written up in its README.

Against an event-driven engine

backtrader runs the same EMA(12/26) + RSI(14) strategy on 500K 1-minute bars in 46,944 ms, against 13 ms for ManifoldBT: a factor of 3,556. Measured with benchmarks/bench_vs_competitors.py, median of 3 runs. It sits outside the CI suite because its event-driven fills produce a different PnL, and the parity gate publishes no timing for engines that did not do the same work.

How it compares

	ManifoldBT	vectorbt	backtrader	Nautilus
Engine	Rust (vectorized + sequential fills)	Numba/NumPy (vectorized)	Python (event-driven)	Rust/Python (event-driven)
Execution realism¹	High	Basic	High	High
Focus	Backtesting + research	Backtesting at scale	Backtest + live	Backtest + live (production)

¹ fees, slippage, funding, partial fills, look-ahead detection.

On GPU (Pro), the Monte Carlo engine runs ~36x faster than the all-core CPU path (SDE path simulation, RTX 3090, f32).

Documentation

Full API reference, indicator list, configuration guide, and best practices:

www.manifoldbt.com/docs/documentation.html

Community vs Pro

	Community	Pro
Output resolution	Daily	1m, 5m, 15m, 1h
Monte Carlo	1K sims	Unlimited
Walk-Forward	-	Anchored + Rolling
Parameter Stability	-	Yes
Free connectors (Binance, Bybit, Hyperliquid, dYdX, Bitstamp, Yahoo)	Yes	Yes
Databento & Massive connectors	-	Yes
Safety checks (lookahead, exposure)	-	Yes
Tearsheets & export	-	Yes

License

Apache 2.0 with Commons Clause. The source is available, free to use, modify and self-host. Reselling the software or offering it as a paid hosted service is not permitted. See LICENSE for the full text.