Stock Terms (Glossary)

Level: Beginner · About 25 min · 16 slides

The words you'll hear every day in the ADT room, in one place: market and company basics, orders and accounts, indexes and economic reports, options terms and alerts, and ADT's own lingo. Bookmark this lesson and come back to it.

🔑 Key takeaways

• Bid = highest buyer, ask = lowest seller, spread = the gap. Big liquid stocks have tight spreads.
• Market orders guarantee a fill but not a price. Limit orders guarantee a price but not a fill.
• The old PDT / $25K rule was replaced by FINRA intraday margin standards (effective June 4, 2026; brokers phasing in through Oct 2027).
• Options: calls profit if price rises, puts if it falls. One contract usually = 100 shares.
• Learn the ADT lingo: HOD/LOD, PT, R/R, Danny DeVito Toe vs Shaq Leg, don't diddle in the middle.

✅ Your homework

1. Make flash cards for 20 terms you didn't know.
2. In your broker app, find the bid, ask and spread for SPY and for a small stock. Compare them.
3. Decode this alert: BTO XYZ 50C 12/18.
4. Use 5 ADT lingo terms in the room chat this week.

📎 Resources

• FINRA Regulatory Notice 26-10: new intraday margin standards (finra.org/rules-guidance/notices/26-10)
• Investor.gov glossary
• LULD trading pauses: luldplan.com
• ADT Academy: https://americandreamtradingacademy.com