Execution: venue.trade() in chat code, strategy.execute() in strategy agents.
Overview
Public.com connects to Scalar Field as a live brokerage venue. Once linked, Scalar Field reads positions, balances, and order history, and places equity, ETF, and options orders in the account.
| Specification | Value |
|---|
| Instruments | US equities, ETFs, and options (OPRA/OSI symbols) |
| Connection | Authorize from the portfolio page |
| Fractional | Yes (equities) |
| Hours | US market hours |
| Quotes | Last, bid, ask, volume (no order-book depth) |
| Currency | USD |
Order Semantics
- Equity symbols are plain tickers (
AAPL); options use OPRA/OSI symbols (AAPL260919C00250000). Option positions carry multiplier: 100, so market_value = qty * price * 100.
- Fractional quantities are supported for equities. Size from a dollar budget with
round(budget / price, 2).
- The
slippage_bps parameter does not apply to brokerage venues.
Connecting
Click “Connect” on the portfolio page and authorize with your Public.com account.
Usage
from scalarlib import venue
# Buy 2 shares of AAPL
resp = venue.trade("buy", "AAPL", 2, account="PUBLIC")
# Options by OPRA symbol
resp = venue.trade("buy", "AAPL260919C00250000", 1, account="PUBLIC")
strategy.execute(symbol, target_qty) instead — see Strategies.
Data Functions
Equity and options research uses the cross-asset market-data functions; each links to its full reference:
| Function / dataset | Purpose |
|---|
| Equity & ETF OHLCV | Historical price bars for backtesting and signals |
| Latest Price Snapshot | Live last/bid/ask quotes for sizing and execution checks |
| Options Quotes | Options chains and quotes |
| Options Greeks & IV | Greeks and implied volatility |
| Options Screener | Contract screening by moneyness, expiry, volume |
| Earnings | Earnings calendar and results |
| Insider Trades | SEC Form 4 insider transactions |
| Institutional Holdings | 13F institutional positions |
Notes
- Orders submitted outside market hours are queued for the next market open.
- Avoid trading directly on Public.com while strategies are active on the account — see Reconciliation.
Related
