Calculation Flashcards
Investments module
Margin Maintenance Formula
( (1-initial margin %)/(1-maintenance margin %) ) X purchase price of stock
Required Rate of Return formula
Risk-free rate (RFR) + (market rate - RFR) * Beta
aka r(f) + (r(m) - r(f)) * B
Dividend Discount Model (DDM)
(current dividend * (1 + growth rate))/(required rate of return - growth)
aka D(o)(1+q)/(r-g)
Standard deviation on HP Calc
Sigma+ after each #, then S(x) (gold + 8)
Coefficient of Variation
Standard deviation (sigma) % expected return
Covariance(ij)
correlation coefficient(ij) * standard deviation of (i) * standard deviation of (j)
aka P(ij)sigma(i)sigma(j)
Correlation Coefficient (P(ij))
Covariance(ij)/Sigma (i) Sigma (j)
Beta
Correlation Coefficient(i)*Standard Deviation (i)/Standard deviation of the market
OR
Covariance(im)/standard deviation of the market ^2
Required Rate of Return
Risk-free rate + (market - risk-free rate) * Beta
Required Rate of Return with Current price, dividend, and growth rate
(Current dividend (1+growth rate)/price) + dividend growth
Change in bond price
-duration * (change in yield/1+yield)
Calculate Alpha
Return - risk-free rate + (market-RFR) * beta
Positive good, negative bad
Sharpe Calculation
r(p) - r(f)/sigma (p)
ALL #S SIGMA+, GOLD + 7 = r(p)
GOLD+8 = (sigma (p))
Capitalization Value
Annual Income/Capitalization Rate
NOI Calculation
Gross Rental Receipts
+ Non-rental income
= Potential Gross Income (PGI)
- vacancy + collection losses
= Effective Gross Income
- Operating Expenses
= NOI
aka Property’s cash flow
Property’s Intrinsic Value
Once you’ve calculated NOI,
IV = NOI/Cap Rate
Coefficient of Variation Formula
Standard Deviation/Mean (average) return
Standard Deviation vs Beta
Std Dev measures VARIABILITY of returns in a NONDIVERSIFIED portfolio and is a measure of TOTAL RISK.
Beta measures VOLATILITY of returns in a DIVERSIFIED portfolio and is a measure of SYSTEMATIC RISK.
Current Yield
Annual interest in dollars/Bond’s current price
Geometric Mean - definition/calculation
aka time-weighted return. To calculate:
- Add 1 to the returns (aka 25% is 1.25, -12% is .88)
- Multiply the returns
- The result is Future Value (FV)
- -1 is ALWAYS THE PRESENT VALUE
- N is the number of years
- solve for i
time-weighted vs dollar-weighted
Time-weighted is investment performance as a % of capital at work. Used to compare managers.
Dollar-weighted measure changes in total dollar value. In other words, IRR/NPV. Used for absolute $ amts for financial goals.
Real Rate of Return
= ((1+ after-tax return/1+ inflation rate) -1) *100
Current Yield
Annual interest in dollars/Bond’s current price
Taxable Equivalent Yield
tax-exempt yield/1-tax rate
OR
tax-exempt yield = TEY X (1-tax rate)
Formula for employer contrib to Keogh
- Salary X 92.35 X .0765 = salary for contrib, then
- ((Plan Contrib %)/(1+plan contrib %))
= Profit Sharing Amount
SHORT-CUT ON KEOGH CALC
AFTER self-employment tax of .07065, Take Schedule C Net Income, then:
- Multiply by 12.12% for 15% contrib for non-owner employees
- Multiply by 18.59% for 25% contrib for non-owner employees