Korea Securities Investment Advisor common mistakes
Korea Securities Investment Advisor · Understand the traps and how to avoid them.
Treating bonds as a single 'safe' asset class and applying one duration formula to every bond, so questions on zero-coupon, perpetual, and callable bonds are answered with the same modified-duration shortcut.
Candidates memorize the coupon-bond duration formula early and never revisit it; exam items deliberately use zero-coupon bonds (duration equals maturity) and perpetuals (duration = 1/y) to separate memorizers from understanders.
What to do instead
Before computing, classify the bond by cash-flow pattern and write down which duration convention applies. Practice deriving duration as the weighted average time of cash flows for four cases: zero-coupon, fixed-coupon, perpetual, and floating-rate. Then convert to modified duration and rehearse the price-change approximation with convexity for large yield moves.
Conflating the yield measures: quoting current yield when the question asks for yield to maturity, or ignoring reinvestment assumptions when asked for realized compound yield.
Textbook shorthand and spreadsheet defaults blur the distinctions, and candidates answer the number they can compute fastest rather than the one the question names.
What to do instead
Build a one-page comparison of current yield, YTM, yield to call, and realized compound yield, each with its cash-flow assumption and reinvestment assumption stated explicitly. For every practice item, underline the yield measure requested and the holding period before touching the calculator.
Applying the CAPM required return directly as the discount rate in a multi-period dividend discount model, or mixing nominal and real rates inside the same calculation.
Candidates learn CAPM and DDM as separate chapters and never practice chaining them; unit mismatches (nominal growth with real discount rate) then pass unnoticed because the arithmetic still produces a plausible number.
What to do instead
Drill full valuation chains: estimate beta, compute required return with CAPM, feed it into a Gordon or two-stage DDM, then sanity-check implied growth against the discount rate. Always write units (percent nominal, annual) next to every input and reject any answer where growth exceeds the discount rate in a perpetual model.
Interpreting a portfolio's beta or standard deviation as sufficient evidence of diversification, without checking correlation or the residual idiosyncratic risk.
Single-number risk statistics are easy to compare, so candidates skip the covariance structure and answer risk-reduction questions using volatility rankings alone.
What to do instead
For every diversification question, write the two-asset variance formula and identify which term (weights, individual variances, or covariance) the item is testing. Practice showing that two high-volatility assets with negative correlation can produce a lower portfolio variance than two low-volatility assets with high correlation.
Mixing up the suitability and explanation duties: recommending a high-risk product to a conservative investor because the client 'asked about it', or treating a signed risk-disclosure form as satisfying the suitability obligation.
Candidates collapse the investor-protection rules into a single 'get it in writing' instinct, and the exam tests whether the suitability assessment precedes and constrains the recommendation regardless of documentation.
What to do instead
Memorize the sequence: collect investor information, assess suitability, explain the product, obtain confirmation. Then practice items where a signed waiver exists but suitability was never assessed, and state precisely which duty was breached and why documentation alone does not cure it.
Confusing the different conflict-of-interest and handling rules for cash, gifts, and soft-dollar benefits, applying one threshold or prohibition to all three.
The rules sit in different chapters and share vocabulary, so candidates merge them into one vague 'disclose everything' rule and fail items that ask which specific conduct is permitted.
What to do instead
Build a three-column table (cash inducement, non-cash gift/entertainment, soft-dollar/research benefit) listing who may receive it, whether prior approval is needed, whether disclosure is required, and any value threshold. Rehearse with scenario items that differ only in the benefit type.
Calculating performance fees or advisory fees on the wrong base, such as charging a performance fee on gross returns or on assets before contributions and withdrawals are accounted for.
Fee formulas look simple, so candidates skip the definitional details about high-water marks, hurdle rates, and the treatment of cash flows during the period.
What to do instead
Write out the fee waterfall step by step for each practice case: starting value, net contributions, gross return, hurdle, high-water mark, then fee. Do at least five problems that include a mid-period contribution and a high-water mark carried from a prior loss year, and verify the fee is zero when the mark is not exceeded.
Reporting time-weighted and money-weighted returns interchangeably, or computing a money-weighted return without matching cash-flow timing to the valuation dates.
Both are called 'return' and the formulas are memorized without their purpose; candidates do not connect time-weighted return to manager skill and money-weighted return to investor experience.
What to do instead
For each performance question, first ask whether the manager controlled the cash flows. If yes use time-weighted (chain the sub-period returns); if the client's timing drove the result use money-weighted (IRR on dated cash flows). Practice one scenario computed both ways and explain in one sentence why the numbers differ.
Applying the wrong tax treatment across account types and product wrappers, for example taxing unrealized gains annually in a general account or ignoring the separate taxation of dividends and capital gains.
Candidates memorize rates but not the taxable event, so they apply a rate to the wrong base or the wrong year.
What to do instead
Create a matrix of account type (general, tax-advantaged, retirement) against income type (interest, dividends, realized capital gains, unrealized gains), and fill in when the taxable event occurs and at what rate. Then solve deferral problems by comparing after-tax terminal wealth with and without annual taxation.
Answering ethics items by choosing the option that is legally permissible rather than the one that meets the professional standard, and failing to identify the specific standard violated.
Candidates reason from personal or legal intuition instead of the professional code, and the exam deliberately offers a lawful-but-unethical distractor.
What to do instead
For every ethics scenario, name the standard by its heading before reading the options, then eliminate any option that is merely legal. Practice writing one sentence of the form 'Standard X requires Y, and the conduct fell short because Z' for ten scenarios covering priority of client interests, disclosure of conflicts, and confidentiality.