Algo Trading · pytrader

Backtest, paper trade, and automate PSX.

The live pyPSX platform. Validate an idea on 10 years of history, rehearse it in a free paper account with a real fill engine, then let it run on a schedule, locally or as a cloud bot. No broker account needed.

Open dashboard →Read the docs

Paper trading is free and live today. Real-money execution through a broker is separate - see the Broker API →

Capabilities

Backtesting

Realistic commission and slippage. Grid-search over parameters. Per-symbol breakdown. Publish your losers.

python

results = run_backtest(
    "ema_crossover",
    symbols=index_constituents("KSE100"),
    start="2016-01-01",
)

Paper trading

Market, limit, stop, stop-limit, with a real fill engine and FIFO lot accounting. The same API surface live execution will use.

python

client = TradingClient.from_env(paper=True)
client.place_manual_order(
    "OGDC", "BUY", 100, "MARKET"
)

Live market data

Real-time ticks over a single WebSocket with auto-reconnect. Quotes, L2 depth, recent trades, key-gated via pytrader.

python

feed = LiveFeed(symbols=["OGDC", "HBL"], paper=True)
feed.on_tick(lambda t: print(t.symbol, t.price))
feed.start()

Strategy Copilot

Describe a strategy in English, get a runnable paper bot. Ask for an indicator we don't support and it tells you, it won't fake it.

python

# "Buy KMI-30 stocks on EMA20 > EMA50"
# → runnable paper bot config

Architecture

Data flows one direction: fetch, validate against history, rehearse in paper, then ship live.

Data

pypsx

OHLCV, fundamentals, live feed

Validate

run_backtest()

commission, slippage, sharpe

Paper

TradingClient

market/limit/stop, WebSocket fills

Live

coming soon

broker routing, custody

How it compares.

Honest table. If yfinance did what you needed for PSX, we wouldn't exist.

	Manual	Scraping	yfinance	pyPSX
PSX historical (10y)	n/a	Fragile	❌	✓
Live ticks (WebSocket)	n/a	Polling	❌	✓
Backtesting	❌	Build it yourself	US only	✓
Paper trading	❌	❌	❌	✓
Maintenance	Daily	Weekly	None	None