Community Q&A
Expert-verified answers to your financial certification questions. Ask, learn, and connect with fellow candidates.
Updated
Why does adding a shorter-duration bond lower portfolio duration?
Yes, if the question is talking about the fixed-income sleeve and the added bond truly has lower duration than the existing holdings, the sleeve's duration usually falls because duration is a market-value-weighted average.
What changes in my calculations when one leg of a bull spread is short?
The short leg turns part of the upside into a negative payoff for your strategy once that option finishes in the money. Example with **Harbor Vision Media**: - Long call, strike `65`, premium `5` - Short call, strike `75`, premium `2` If the stock en
How should I think about a collar when the stock position and the options seem to push against each other?
Start with the stock because the collar is built around an existing equity position. The put and the short call then reshape that stock payoff. Suppose **Silver Pike Logistics** owns stock at `90`, buys a put with strike `84` for `2`, and sells a cal
Why does a long straddle have two breakeven prices instead of one?
A long straddle owns both upside exposure and downside exposure around the same strike. Because profit can come from a large move in either direction, the strategy has one breakeven above the strike and one below it. Take **Elm Ridge Stores**: - Long
How do I stop mixing up option payoff and option profit on CFA derivatives questions?
Use a two-line routine every time: 1. Solve expiration value from intrinsic payoff only. 2. Then add initial premium inflows and outflows to reach profit. Suppose **Aster Telecom** buys a call with strike `40` for premium `3`. If the stock ends at `4
Can an investment report be material and public at the same time?
Yes. `Material` and `public` describe different things. - `Material` asks whether a reasonable investor would consider the information important. - `Public` asks whether the information has been broadly disseminated and is available through proper ch
How should I analyze a soft-dollar package that includes both research tools and obvious perks?
Separate the items. That is the cleanest exam habit. Suppose **High Orchard Asset Management** routes trades to a broker and receives: - credit research reports - screening software for analyst models - a luxury conference package for the lead PM The
Why is sharing material nonpublic information still a violation if I never trade on it myself?
Yes. Under the CFA ethics framework, the problem is not limited to your own personal trade. Passing along material nonpublic information can cause others to act on it, and that is enough to create the breach. Imagine research associate **Mila Chen**
How can mosaic theory be allowed if the final conclusion is strong enough to make money?
The strength of the conclusion is not what decides legality. What matters is the nature of the inputs and whether the analyst respected confidentiality and market rules while building the view. Suppose analyst **Jordan Wells** covers **Atlantic Valve
When is paid research still considered public information?
Yes, it can still be public if it is broadly available on equal and legitimate terms. The fact that a data feed is expensive does not automatically make it nonpublic. Think about **Blue Mesa Analytics**, a subscription platform that sells shipping an
How should I think about the test statistic instead of just memorizing the formula?
The test statistic tells you how far the sample result sits from the null-hypothesis value after adjusting for normal sampling noise. In plain language, it answers: "How surprising is this sample if the null world is the one we live in?" Suppose fict
Why does a large p-value not mean the null hypothesis is true?
Because the test is designed to evaluate whether the evidence is strong enough to go against the null, not to prove the null is correct. A high p-value means the observed sample would not be unusual if the null hypothesis were true. That is much weak
How do you remember Type I versus Type II error without second-guessing yourself?
Start with the action, not the Roman numeral. - Type I error: you rejected the null hypothesis, but the null was actually true. - Type II error: you failed to reject the null hypothesis, but the null was actually false. A practical way to anchor it i
When exactly am I supposed to reject the null hypothesis on CFA Level I?
The cleanest way to think about rejection is that you are testing whether the sample evidence looks too extreme to be consistent with the null hypothesis. Use one of these equivalent rules: - Critical-value method: reject the null if the test statist
When should I use key rate duration instead of the regular duration number?
Use key rate duration when the risk is tied to one part of the yield curve rather than a uniform shift across maturities. Example: - **Eastbank Pension Fund** owns a bond portfolio with large exposure around the 10-year maturity point. - The manager
Why does a higher-coupon bond usually have lower duration even when maturity is the same?
Duration falls when more of the bond's economic value arrives earlier. Compare two 5-year bonds from **Norcrest Logistics**: - Bond A coupon: `2%` - Bond B coupon: `8%` Both mature in 5 years, but Bond B pays larger coupons along the way. Those earli
Why is modified duration a bad choice for a callable bond when rates move?
Modified duration assumes the bond's expected cash flows stay fixed when yields change. A callable bond breaks that assumption. Suppose **Red Harbor Telecom** has a callable 9-year bond. If market yields drop, the issuer becomes more likely to refina
How do I know when the exam wants Macaulay duration instead of modified duration?
Ask what the question is requesting before you think about formulas. - If it wants the weighted-average time of promised cash flows, use Macaulay duration. - If it wants approximate percentage price change from a yield move, use modified duration. Qu
Why is modified duration still reported in years if I am using it to estimate price sensitivity?
Treat modified duration as an approximate percentage price sensitivity that is built from a time-weighted bond structure. That is why market tables may still display it in years even though the operational use is: `Approximate % price change = - Modi
Why does a callable bond break the normal duration shortcuts I use for straight bonds?
The shortcut fails because the bond's expected cash flows are no longer fixed. When yields fall, the issuer becomes more likely to call the bond. That shortens the expected life and caps some of the upside price gain.
Want unlimited access?
You've browsed several pages. Sign in to save your spot, bookmark questions, and unlock all 4,671 community questions plus expert-verified study materials.
Have a Question? Ask Our Experts
Register to ask questions, get expert-verified answers, and connect with fellow certification candidates preparing for CFA, FRM, CIA, CPA, and EA exams.