Function 1, Knowledge Associated with the Securities Industry and Broker-Dealer Operations, is 70% of the Series 99 (35 of 50 scored questions). It follows a trade through the firm: account opening, cashiering and transfers, custody and control, trade reporting and corrections, margin and securities lending, settlement, statements and confirmations, regulatory financial requirements, and books and records. It rewards exact recall of periods, timelines, and the differences between processes that sound alike.
Why Function 1 dominates the exam
The Series 99 exists to confirm that the people running a broker-dealer’s operational machinery understand the rules governing it. So the exam spends most of its questions on the machinery itself, and the nine areas below map to the path a trade takes through the firm.
If you study these in pipeline order rather than as nine disconnected topics, the material holds together much better. Each stage hands off to the next.
Account opening and maintenance
~5 of 35How customer accounts are established, documented, and updated: the information a firm must collect, the approvals required, and the events that trigger a maintenance update. This is the front door for everything downstream, and account records carry one of the longest retention obligations on the exam.
Cashiering and account transfers
~5 of 35Receipt and delivery of securities and funds, plus the transfer of an account from one firm to another. Transfers are heavily tested because they are sequential and time-bound: know the steps and the windows, not just the concept.
Custody and control of securities
~5 of 35Where customer securities live and who is responsible for them. The customer-protection framework governing reserves and custody sits here. Watch the distinction between custody (holding) and control (the firm’s ability to direct the securities); the exam treats them as separate concepts.
Trade reporting and corrections
~3 of 35Reporting executed trades and handling the corrections, cancellations, and rebills that follow when something is wrong. Know what triggers each type of correction and which record it touches.
Margin and securities lending
~3 of 35The mechanics of margin accounts and of lending securities out. Operations candidates who have never worked a margin desk tend to find this the least intuitive area in Function 1.
Settlement
~4 of 35Trade comparison, delivery versus payment, repurchase and resale trades, and continuous net settlement, plus the roles of clearing broker-dealers and clearing facilities.
Account statements and confirmations
~3 of 35What the customer receives and when: periodic account statements and per-transaction confirmations, and what each has to contain.
Regulatory financial requirements
~4 of 35Net capital, aggregate indebtedness, and the reserve computations a firm must perform. You are not being asked to run these computations as an accountant would; you are being asked what they are, what they protect against, and how often they happen.
Books and records
~3 of 35Making and preserving the firm’s records: reconciliations, the daily blotter, periodic trial balances, retention periods, electronic recordkeeping requirements, and the conduct that is flatly prohibited (falsifying, destroying, or concealing records).
Practice the Pipeline in Order
CertFuel's Series 99 course walks the trade lifecycle stage by stage, then drills the handoffs between stages with adaptive questions. Free through the end of 2026.
Choose Your PathThe three things Function 1 actually tests
Across all nine areas, the question styles repeat. Recognizing them tells you how to study.
1. Exact periods and timelines
Record retention is the clearest example. Different record categories carry different minimum preservation periods, and the exam asks you to match them:
| Record category | Minimum preservation period |
|---|---|
| Blotters, ledgers, and securities position records | 6 years, first 2 easily accessible |
| Order memoranda, confirmations, many transaction records | 3 years, first 2 easily accessible |
| Customer account opening and maintenance records | 6 years after the account closes |
| Organizational documents and registration records | Life of the enterprise |
There is no clever way to derive these. They go on flashcards.
A record must stay preserved for its full applicable period even if the firm ceases doing securities business before that period ends. Going out of business does not reset the clock, and the exam likes this one.
2. Distinctions between processes that sound alike
This is the signature Series 99 question type. Each of these pairs is worth knowing cold:
- Trade comparison vs settlement. Comparison is matching the parties’ trade details before settlement. It is a separate event from actually completing the settlement.
- Daily blotter vs monthly trial balance. The blotter is the itemized daily record of original entries (purchases, sales, securities movements, cash movements). The trial balance is the periodic proof of ledger money balances, prepared at least monthly along with the net capital computation.
- Custody vs control. Holding customer securities is not the same as having the ability to direct them.
- Reconciliation vs comparing totals. A reconciliation identifies and resolves differences between the firm’s records and the actual cash, securities, or account records. A securities difference found through a count or verification has to be recorded and worked through the books-and-records process, not just noted.
3. What is prohibited
Books and records carries an explicit prohibited-conduct component, and it is straightforward to score if you have read it:
- Falsification: creating, altering, or causing a record to be inaccurate.
- False or incomplete entries: records must accurately reflect the underlying transactions, cash movements, securities movements, and account activity.
- Improper maintenance: failing to make required records, keep them current, or maintain the required detail.
- Improper retention: destroying, deleting, concealing, or making records inaccessible before the preservation period ends.
An electronic recordkeeping system must either keep a complete time-stamped audit trail that can re-create the original record, or preserve records exclusively in a non-rewriteable, non-erasable format. It also has to support production in human-readable form and maintain a backup. “We keep it digitally” is not by itself compliance.
How to study Function 1
Work the pipeline in order, because each stage explains the next. Then convert everything concrete into flashcards on the day you learn it, not at the end.
A practical sequence:
- Front of the pipeline (account opening, cashiering and transfers, custody and control, trade reporting) until you can narrate how a new account gets opened and a trade gets reported.
- Back of the pipeline (margin, settlement, statements and confirmations) until you can sequence a settlement from comparison through completion.
- The records layer (regulatory financial requirements, books and records) last, since it describes what the earlier stages produce.
- Practice questions throughout, not just at the end. Recognition and recall are different skills, and only questions build the second one.
If you already work in operations, resist the temptation to skip the areas your desk does not touch. Your daily work probably covers two or three of these nine, and the exam covers all nine.
For the other 30% of the exam, see Function 2: professional conduct and controls. For the overall plan, see the Series 99 study guide. All nine areas above appear as one line each on the Series 99 cheat sheet, which is the fastest way to check whether a stage of the trade lifecycle still feels shaky.