ASTS · RESEARCH & PAPER TRADING
Micro Trading Lab
Choose a session. Replay the prices. Review your decisions.
1. Load a session
No data loadedFiles are read in your browser—not uploaded. Up to 12,000 rows / 2 MB. Import only data you are allowed to use. Importing replaces the current paper run after confirmation.
Required columns & source checks
timestamp,open,high,low,close,volumeUse one row per minute, with the timestamp at the START of that minute. ISO timestamps must include Z or an explicit UTC offset, for example 2026-09-25T09:30:00-04:00. All prices must be unadjusted USD and all rows must represent ASTS. Volume is shares, not lots. Duplicate timestamps and invalid prices are rejected. The importer checks format, not authenticity or licensing.
2. Choose your window
Session dates always use New York time, including daylight saving. Holiday, halt and overnight eligibility are not automatically verified. Check the official calendar; use a custom window when needed. Changing the date/window starts a new paper run.
Session replay
—No price source loaded.
Load data to explore a session.
Close: blue. Approximate VWAP: teal. Hollow dots: incomplete grouped bars. Missing prices are never filled. The price axis is not zero-based.
Inspect revealed data
| Time | Open | High | Low | Close | Volume |
|---|
Paper-trade journal
No paper trades yet.
| Time | Side | Shares | Fill | Fee | Realized P&L | Note |
|---|
Off by default. No account needed. Browser storage is not encrypted; avoid saving on a shared device. Clearing browser data removes saved work.
How this lab works
Use the session you have
Any imported date can be selected. The chart, VWAP and exports include only the chosen window up to the replay cursor. Rewinding after a paper trade requires starting a fresh run.
Know the assumptions
Approximate VWAP = sum of ((high + low + close) / 3 × volume) / total volume, using revealed one-minute rows. It is not tick-level VWAP. Trading costs are user assumptions, not broker quotes.
Practice is not execution
Long-only, no leverage. Cash is reusable immediately; settlement, taxes, FX, corporate actions, order queues, trading halts and real fill availability are not simulated. A profitable replay does not establish a trading edge.
Nasdaq session hours & holiday calendar ↗ · ASTS research methodology
Educational tool, not personalized investment advice or a buy/sell recommendation. A licensed feed is still required before live price collection can be enabled.
Educational information, not a recommendation to buy or sell, or personalized financial, legal or tax advice. You can lose money. Confirm eligibility, rules and prices directly before acting.