Stock Trading Technology & Digital Applications 4 — Questions and Answers
Question 1: What does 'co-location' mean in the context of high-frequency trading?
- Two traders sharing the same brokerage account
- Placing trading servers physically inside or near an exchange's data center to reduce latency (Correct answer)
- Merging two algorithmic strategies into one system
- Trading the same security on two different exchanges simultaneously
Correct answer: Placing trading servers physically inside or near an exchange's data center to reduce latency
Co-location allows HFT firms to place their servers inside exchange data centers, reducing signal travel time to microseconds.
Question 2: Which regulatory filing must insiders submit within two business days of a stock transaction under SEC rules?
- Form 10-K
- Form 4 (Correct answer)
- Form S-1
- Schedule 13D
Correct answer: Form 4
Form 4 is required by the SEC and must be filed within two business days when corporate insiders buy or sell company shares.
Question 3: A trader's platform shows 'Level I' data. What information is available?
- Full order book with all bids and asks at every price level
- Best bid price, best ask price, and last trade price only (Correct answer)
- All institutional block trades executed that day
- Options chain data for all strikes and expirations
Correct answer: Best bid price, best ask price, and last trade price only
Level I data provides only the National Best Bid and Offer (NBBO) and the most recent trade price, without depth-of-book detail.
Question 4: What is a 'dark pool' in modern equity markets?
- An exchange that trades only after-hours
- A private trading venue where large orders are matched anonymously away from public exchanges (Correct answer)
- A brokerage account used for short selling
- A fund that invests exclusively in distressed assets
Correct answer: A private trading venue where large orders are matched anonymously away from public exchanges
Dark pools are private exchanges where large institutional orders are executed without publicly displaying order details, reducing market impact.
Question 5: What does the 'Greeks' tab in an options trading platform display?
- Foreign exchange rates for European currencies
- Sensitivity metrics showing how an option's price changes relative to various factors (Correct answer)
- Historical price data for Greek stock indexes
- Risk ratings assigned by European credit agencies
Correct answer: Sensitivity metrics showing how an option's price changes relative to various factors
The Greeks (Delta, Gamma, Theta, Vega, Rho) measure how an option's price responds to changes in underlying price, time, volatility, and interest rates.
Question 6: A robo-advisor platform automatically rebalances a portfolio quarterly. What technology primarily enables this?
- High-frequency trading algorithms
- Rules-based automation that triggers trades when asset allocations drift from targets (Correct answer)
- Artificial intelligence that predicts future returns
- Manual review by a licensed portfolio manager
Correct answer: Rules-based automation that triggers trades when asset allocations drift from targets
Robo-advisors use rules-based engines that monitor portfolio drift and automatically execute rebalancing trades when allocations exceed set thresholds.
Question 7: What is 'slippage' in electronic trading?
- A brokerage error that causes a missed trade
- The difference between the expected execution price and the actual price received (Correct answer)
- The cost of margin interest on overnight positions
- A delay caused by slow internet connection
Correct answer: The difference between the expected execution price and the actual price received
Slippage occurs when a trade executes at a different price than expected, typically due to fast-moving markets or insufficient liquidity.
Stock Trading Technology & Digital Applications 4
What does 'co-location' mean in the context of high-frequency trading?