Overview
Trading US stocks works a little differently from the EGX. This guide walks you through the order types you can use, how long orders stay active, how to read US stock symbols, how charts behave, what you'll pay in fees, and the risks worth knowing before you invest.
Order types
Thndr supports a few order types for US stocks. Here's what each one does.
Order type | What it means |
Market order | A market order buys or sells at the current market price. Fractional orders are available with market orders. |
Limit order | A limit order lets you set the price you're willing to buy or sell at. You can't use limit orders for fractional shares — fractions can only be traded with market orders. Most stocks priced over $1.00 per share with a market cap over $25,000,000 are eligible for fractional share orders. |
Advanced limit order | A type of Limit Order that gives you more control over how and when your order is executed. You can set your price and quantity, along with additional conditions, and the order will only execute when the specified conditions are met. |
Stop orders | Automatically sells if the price drops to a set level, to limit losses. |
Time-in-force
Time-in-force controls how long an order stays active before it's canceled.
Time-in-force | What it means |
Good till day | Expires at the end of the trading day (4:00 PM EST). If it's not filled by then, it's canceled. |
GTC (good 'til canceled) | Stays active until you manually cancel it, or for up to 90 days. |
FOK (fill or kill) | Must be filled completely and immediately, or it's canceled. Use it when a partial fill isn't acceptable. |
IOC (immediate or cancel) | Fills as much as possible immediately, then cancels the rest. |
Stock symbols ( General Knowledge )
In the US market, a letter added to a stock symbol can tell you something about the share class or the company's status. Here are the most common ones to know.
Symbol | What it means |
A | Class A shares (e.g., BRK.A) |
B | Class B shares (e.g., BRK.B) |
F | Foreign issue |
J | Voting share |
K | Non-voting share |
M | Fourth-class preferred shares |
N | Third-class preferred shares |
O | Second-class preferred shares |
P | First-class preferred shares |
Q | In bankruptcy proceedings |
R | Rights |
X | Mutual funds |
OB | Over-the-counter bulletin board |
Charts
US stock charts and prices on Thndr aren't live. Charts have around a 5-minute delay, and prices update roughly every 15 minutes rather than in real time.
Note: There's currently no way to watch live price updates in Thndr, so a small gap between the price you see and the real-time market price is normal.
Publicly Traded Partnerships (PTPs)
A PTP is a type of US-listed company that comes with tax and account risks foreign investors should know about.
What is a PTP?
A Publicly Traded Partnership (PTP) is a company — usually a limited partnership (LP) or LLC — that trades on US exchanges and passes income directly to investors. PTPs are mainly found in the energy, oil, gas, and pipeline sectors.
Why foreign investors should usually avoid PTPs
High tax withholdings — steep and applied automatically
Freeze or forced sale — your position can be frozen or force-sold
Not tax-efficient
Important: As a foreign investor, PTPs can trigger large automatic tax withholdings, so it's usually best to steer clear of them.
Delisting
Delisting is when a stock is removed from a public exchange. Here's how to spot the risk and what happens next.
What delisting means
Delisting removes a stock from a public exchange like NASDAQ or NYSE. It can happen voluntarily (mergers, acquisitions, or going private) or involuntarily (failing to meet the exchange's listing standards).
How to spot the risk
Watch the price — a stock trading consistently below $1 is a warning sign
Follow the news — financial media often report on delisting warnings
Common delisting criteria by exchange
NASDAQ delisting rules
Rule | Condition | Minimum requirement |
Price | Bid price too low | $1.00 minimum for 30 consecutive business days |
Market value | Too small | Public float below $15M |
Shareholders' equity | Too low | Less than $2.5M for certain tiers |
Shareholders | Too few | At least 300 (Global Market) |
Public float | Too small | At least 500,000 shares held by the public |
Reporting | Late filings | Must file reports with the SEC on time |
NYSE delisting rules
Rule | Condition | Minimum requirement |
Stock price | Sustained below $1.00 | Average closing price below $1.00 for 30 days |
Market cap | Too low | Market cap below $15M for 30 trading days |
Shareholders' equity | Deficient | Equity below $50M (combined with losses) |
Trading volume | Extremely low | Illiquidity may trigger a review |
What happens after a stock is delisted
Moves to OTC — often OTCQB, OTCQX, or Pink Sheets, with much lower liquidity and less transparency
Higher risk — more volatility, fewer protections, and wider spreads
Limited buying — some brokers block or restrict buying OTC stocks and only allow selling
Corporate actions still apply — mergers, splits, or bankruptcies can still happen after delisting
Real examples
Company | Reason | Result |
Luckin Coffee | Accounting fraud | Moved to OTC |
Sundial Growers | Price stayed below $1.00 | Reverse split, then relisted |
FuboTV | Non-compliance (price) | Regained compliance |
Bed Bath & Beyond | Bankruptcy and price drop | Delisted and liquidated |
FAQs
Why aren't my US stock prices updating live?
US charts and prices on Thndr aren't real-time. Charts have about a 5-minute delay and prices update roughly every 15 minutes. There's currently no way to watch live updates in Thndr, so a small gap between the displayed price and the real-time market price is normal.
Can I buy fractional shares with a limit order?
No. Fractional shares can only be traded with market orders. Most stocks priced over $1.00 per share with a market cap over $25,000,000 are eligible for fractional share orders.
Are stop orders available?
Stop Orders are now available on Thndr, along with Market Orders, Limit Orders, and Advanced Limit Orders.
These order types give you more flexibility and control over how and when your orders are executed, based on the conditions you set.
What happens if a US stock I own gets delisted?
The stock usually moves to the OTC market (OTCQB, OTCQX, or Pink Sheets), where liquidity is lower and prices can be more volatile. Some brokers only allow selling OTC stocks, not buying. Corporate actions like mergers, splits, or bankruptcies can still happen after delisting.