Securities Trading and Derivatives

01Purpose and scope

• This manual supports the course Securities Trading and Derivatives. It describes how trades in cash securities and derivatives are actually originated, priced, checked, executed, confirmed, settled and reconciled in a working trading or back office environment. It is written as a reference for analysts, traders, operations staff, risk managers and learners who need to understand the day to day mechanics behind the course material.
• The scope covers exchange traded equities, exchange traded futures and options, and over the counter derivatives such as interest rate swaps and currency forwards. It touches on fixed income only where a derivative depends on it. It does not attempt to teach valuation theory in depth, portfolio construction or tax treatment, which each need their own references.
• The steps described here reflect common practice. Individual firms, venues and clearing arrangements vary, and the rules that govern them depend on jurisdiction. Where a rule is cited, check the current text with the securities or derivatives regulator that applies to your activity and with your firm's approved procedures.

02Core principles

• Every trade is a promise that must be matched, priced, documented and settled. Most operational failures come from a break in one of those links rather than from a bad market view. A useful habit is to ask, for each trade, who agreed to what, at what price and size, under which terms, and how the cash and securities will move.
• Separation of duties is a foundation, not a formality. The person who decides to trade should not be the only person who books, confirms or approves the trade. Front office, middle office and back office functions exist partly to create independent checks on one another, and controls work only when those checks are real.
• Price discovery and fair treatment of clients both depend on transparent order handling. Orders should be routed according to the firm's documented best execution policy, and any deviation should be recorded with a reason. Derivatives add a further principle: exposure must be measured continuously, not only at month end or at the time of execution.
• Liquidity, counterparty quality and legal enforceability shape what can be done. A position that looks profitable on a screen may be hard to exit in a stressed market, or may depend on a collateral agreement that was never signed. Good practitioners test these assumptions before they rely on them.

03Planning and preparation

• Before any trade is entered, confirm the mandate. For a client account that means the investment policy statement, any restrictions on instruments, leverage limits, concentration limits and approved counterparties. For a proprietary desk it means the risk limits approved by the risk committee, including position limits, value at risk limits where used, and loss limits that trigger a review.
• Set up the operational environment. Confirm that the account is open at the executing broker, the clearing member, and the custodian. Check that the static data is correct, including security identifiers, contract specifications, tick sizes, lot sizes, expiry dates, and the currency and settlement location. Errors in static data are a common source of failed trades, and they are easier to prevent than to correct after execution.
• For derivatives, prepare the legal and credit framework. Exchange traded contracts rely on the clearing house rulebook and margin schedule. Over the counter trades usually depend on an ISDA Master Agreement with a credit support annex that sets out collateral terms. If the documentation is not in place, the trade may still be possible, but the counterparty risk and the settlement path will be harder to control.
• Prepare the market context. Know the scheduled announcements, the expected liquidity during the session, and any trading halts or circuit breakers that apply to the instrument. A trade planned for the open may behave very differently from one executed near the close, and an order that fits the mandate on a normal day may be too large for a thin market.

04Recommended workflow

1. 1
   : Record the trade idea with its rationale, instrument, direction, size, target price or price range, time horizon, and the risk limit it will use. A written ticket or order ticket in the firm's system is the starting point for every later check. Ideas that cannot be written down in these terms are usually not ready to trade.
2. 2
   : Run pre trade checks. Confirm that the order is within mandate, that the account has enough cash, margin or buying power, that the position stays within limits after the trade, and that the instrument is on the approved list. For derivatives, calculate the initial margin requirement and confirm the account or clearing member can meet it.
3. 3
   : Select the execution method. Options include a limit order, a market order, a algorithmic slice order, a request for quote in the over the counter market, or a block trade arranged with a broker. Each has different trade offs in price certainty, market impact, and information leakage. Document the choice and the reason, particularly where the order is large relative to average daily volume.
4. 4
   : Execute and monitor. Track fills against the intended price and size. If the market moves through the limit or the order is only partially filled, decide whether to continue, cancel or re route, and record that decision with a timestamp. For derivatives, watch for changes in implied volatility, open interest and spreads, since they affect the true cost of the trade.
5. 5
   : Confirm and affirm the trade. Compare the executed details with the counterparty or broker confirmation, including price, quantity, instrument identifier, trade date, settlement date, fees and commissions. Mismatches should be investigated before settlement, because late corrections are more expensive and sometimes not possible.
6. 6
   : Settle, collateralize and reconcile. For cash securities, track the settlement cycle for the market involved, which has shortened in several markets over time, so check the current rule rather than relying on memory. For derivatives, confirm margin calls, variation margin movements and any premium payments. Reconcile positions and cash between the front office, custodian, clearing member and general ledger at the frequency set by policy, usually daily.

05Quality checks, risk controls and compliance

• Quality checks work best when they are built into the workflow rather than added at the end. Automated pre trade limits, fat finger checks on price and size, duplicate order detection, and restricted list screening catch many errors. Manual review should focus on exceptions, such as orders that breach a soft limit, trades with unusual pricing relative to the market, or trades in names where the firm holds inside information restrictions.
• Risk measurement needs to match the instruments. Delta, gamma, vega and theta describe option risk, and a desk that reports only net notional may understate exposure to a volatility move. Stress tests should include scenarios where liquidity disappears and correlations move toward one, because many derivative losses appear exactly when diversification fails. Limits should be set in units that the risk team can monitor daily.
• Compliance obligations depend on jurisdiction and on the type of activity. Market abuse rules, insider dealing restrictions, short selling rules, trade reporting obligations, and position reporting thresholds all vary by market. Derivatives may also fall under margin, clearing and reporting regimes that differ between exchange traded and over the counter products. Consult the current text from the regulator in your jurisdiction and your compliance function before designing a control.
• This guidance does not replace qualified professional judgment, approved procedures or required authorization. Trades in regulated or high risk activity should be approved by the people and committees that the firm's governance requires, and any question about legal status should go to legal or compliance staff before the trade is entered.

06Collaboration and documentation

• Trading involves several groups with different information. Traders know the market and the reasons for an order. Risk managers see the aggregate exposure. Operations staff know the settlement path and where things break. Compliance knows the restrictions. A short daily meeting or structured message thread, with notes kept in a shared system, prevents much of the friction that appears when one group learns about a problem late.
• Documentation should answer the questions an auditor or a successor would ask. For each trade, record the mandate reference, the approval where needed, the reason for the execution method, the confirmation status and any exceptions with the decision and the person who made it. For derivatives, keep the signed agreements, the margin calculations, and the valuation sources used for month end and risk reports.
• Use standard identifiers and message formats where possible. Industry messaging standards such as FIX for order routing and the standard settlement instructions used in your market reduce manual handling. When a manual process is unavoidable, such as a voice trade or a phone instruction, record it in the system promptly and confirm it in writing.
• Escalation paths should be written and tested. Define who is informed when a limit is breached, when a confirmation is disputed, or when a counterparty misses a margin call. Practitioners often underestimate how much time is lost deciding who should be called.

07Measures and continuous improvement

• Track indicators that reflect the quality of the process as well as the outcome. Useful measures include the rate of trade breaks at confirmation, the number of failed settlements and their cause, the percentage of orders executed within the expected price range, the number of limit breaches and how quickly they were resolved, and the time taken to reconcile positions each day. Set targets that the team can influence, and review them with the people who do the work.
• Look at trends rather than single events. A rise in breaks after a system change, or a cluster of errors in one instrument type, points to a process problem that needs fixing. Post trade reviews of execution quality can show whether the chosen method is delivering the price the firm expected, but they need a fair benchmark, and a single benchmark rarely tells the whole story.
• Changes should be tested before they go live. Update procedures, retrain staff, and check that the new control actually catches the error it was designed for. Keep a log of changes with the reason and the date of implementation so that later reviews can connect a result to its cause.
• Limits to measurement should be acknowledged. Some outcomes, such as the market impact of a trade, cannot be observed directly. Some indicators are easy to game, such as the number of trades completed on time when the definition of completed is loose. Report measures with their definitions attached.

08Common mistakes and how to prevent them

• Confirming a trade from memory is a frequent source of errors. People remember the intended size or price, not the executed one. Require a systematic comparison against the broker or counterparty confirmation, and treat any difference as a break until it is explained.
• Ignoring margin and collateral timing causes avoidable losses. A derivative position can become expensive to hold when volatility rises and margin calls arrive before cash is available. Model the margin requirement under a stressed price move, and make sure funding is arranged before the position grows.
• Using the wrong instrument identifier or contract month is a common data error. Two contracts that differ only in expiry can look similar on a screen. Require two fields to match, such as symbol and expiry, and check the contract specification when a new instrument is introduced.
• Treating an exception as routine erodes controls. A single limit breach approved informally can become a habit. Require written approval for any exception, set an expiry on the approval, and report exceptions to risk management on a regular schedule.

09Practical checklist

• Confirm the trade is within the approved mandate, instrument list and counterparty list before entering the order.
• Check the account for cash, margin or buying power and confirm the position stays within risk limits after the trade.
• Verify static data for the instrument, including identifier, contract specification, currency, lot size and expiry.
• Record the execution method and the reason for choosing it, especially for large or illiquid orders.
• Monitor fills and market conditions, and document any change in the plan with a timestamp.
• Compare executed details with the broker or counterparty confirmation and resolve every break before settlement.
• Confirm margin calls, collateral movements and premium payments against the agreements in place.
• Reconcile positions and cash across front office, custodian, clearing member and general ledger on schedule.
• Review limit breaches, exceptions and open breaks with the responsible manager and record the decisions made.
• Check the current rules from the regulator in your jurisdiction when a control or reporting obligation is unclear.

★Learning sources

• Micro Degree: Securities Trading and Derivatives
• Micro Degree: Accounts Payable Management
• Micro Degree: Bank Reconciliation Operations
• Micro Degree: FinTech Fundamentals