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Published byAmice Henry Modified over 9 years ago
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How active fund managers can extract value from the derivatives market and why the returns available aren’t too good to be true Monte Carlo simulations
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What is a Monte Carlo simulation? Calculation that is dependent on a repeated random sample Calculation – determine the of value of equity options Random sample – movement of underlying market through time Time Underlying market Count the number of points for each outcome to calculate the probabilities
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Can we impose our own views on the Monte Carlo simulation? Drift – general movement of the underlying in a particular direction Shock – volatility of the movement Time Underlying market Drift Volatility Overlay an investor view of drift and volatility to generate a series of outcomes and hence probabilities
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In 1873, Joseph Jagger used his background as an engineer to predict the outcome of the Monte Carlo roulette wheels which at the time exhibited mechanical imbalances He won a total of $325,000 over several days, equivalent to around £10mm today
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What do the Monte Carlo simulation results look like? Investor assumptionsMarket parameter assumptions -Investor assumptions are from DB analyst Jim Reid -Market parameter assumptions include implied volatility, dividends, interest rates -6 year time to maturity -Market parameters imply a 17% probability that underlying market will fall by 70% or more – quite surprising! Underlying marketProbabilityUnderlying marketProbability < -70%17.36%< -70%0.22% -70%5.00%-70%0.95% -60%5.13%-60%2.32% -50%4.74%-50%4.08% -40%5.71%-40%5.52% -30%5.66%-30%6.74% -20%5.91%-20%7.35% -10%6.47%-10%7.54% 0%6.10%0%7.47% 10%6.49%10%7.01% 20%5.74%20%6.49% 30%5.27%30%5.86% 40%4.91%40%5.27% 50%3.93%50%4.61% 60%3.47%60%4.10% 70%2.10%70%3.47% 80%1.95%80%3.08% 90%1.17%90%2.56% 100%0.81%100%2.25% 110%0.63%110%1.90% 120%0.49%120%1.66% 130%0.22%130%1.39% 140%0.73%140%8.15% Total100.00%Total100.00%
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Studio flat, central Monte Carlo, 3 min walk from the Casino – Guess how much? Yours for a measly £1.8mm
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Use Monte Carlo results to value a vanilla ATM put option -Put price estimated by Monte Carlo analysis very close to actual option price in market -Relative to the investor’s assumptions the market price of a vanilla ATM put looks expensive! Underlying marketProbabilityPut returnExpected < -70%0.22%80.00%0.18% -70%0.95%65.00%0.62% -60%2.32%55.00%1.28% -50%4.08%45.00%1.83% -40%5.52%35.00%1.93% -30%6.74%25.00%1.68% -20%7.35%15.00%1.10% -10%7.54%5.00%0.38% Total9.00% DF90.06% MC value8.11% Underlying marketProbabilityPut returnExpected < -70%17.36%80.00%13.89% -70%5.00%65.00%3.25% -60%5.13%55.00%2.82% -50%4.74%45.00%2.13% -40%5.71%35.00%2.00% -30%5.66%25.00%1.42% -20%5.91%15.00%0.89% -10%6.47%5.00%0.32% Total26.72% DF90.06% MC value24.06% Actual option price25.80% Market parameter assumptionsInvestor assumptions
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Use Monte Carlo results to value an ATM put with knock-in at 60% -Put price estimated by Monte Carlo analysis very close to actual option price in market -Relative to the investor’s assumptions the market price of a vanilla ATM put looks expensive! Underlying marketProbabilityPut returnExpected < -70%0.22%80.00%0.18% -70%0.95%65.00%0.62% -60%2.32%55.00%1.28% -50%4.08%45.00%1.83% -40%5.52%0.00% -30%6.74%0.00% -20%7.35%0.00% -10%7.54%0.00% Total3.91% DF90.06% MC value3.52% Underlying marketProbabilityPut returnExpected < -70%17.36%80.00%13.89% -70%5.00%65.00%3.25% -60%5.13%55.00%2.82% -50%4.74%45.00%2.13% -40%5.71%0.00% -30%5.66%0.00% -20%5.91%0.00% -10%6.47%0.00% Total22.09% DF90.06% MC value19.90% Actual option price21.35% Market parameter assumptionsInvestor assumptions
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Graphical representation of the two different outputs
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Underlying marketProbabilityDigital returnExpected 20%17.36%20.00%3.47% 35%5.00%35.00%1.75% 45%5.13%45.00%2.31% 55%4.74%55.00%2.60% 65%5.71%150.00%8.57% 75%5.66%150.00%8.50% 85%5.91%150.00%8.86% 95%6.47%150.00%9.70% 105%6.10%150.00%9.16% 115%6.49%150.00%9.74% 125%5.74%150.00%8.61% 135%5.27%150.00%7.91% 145%4.91%150.00%7.36% 155%3.93%150.00%5.90% 165%3.47%150.00%5.20% 175%2.10%150.00%3.15% 185%1.95%150.00%2.93% 195%1.17%150.00%1.76% 205%0.81%150.00%1.21% 215%0.63%150.00%0.95% 225%0.49%150.00%0.73% 235%0.22%150.00%0.33% 245%0.73%150.00%1.10% Total111.80% DF90.06% Bank Value100.68% -Using market parameters the “value” of the investment is close to 100%, as expected. -Relative to the investor view this represents a 28% undervaluation! Time to price a digital structure -Pays 150% if underlying is above knock-in level at maturity -Knock-in put level at 60% -6 year time to maturity Market parameter assumptions Investor assumptions Underlying marketProbabilityDigital returnExpected 20%0.22%20.00%0.04% 35%0.95%35.00%0.33% 45%2.32%45.00%1.04% 55%4.08%55.00%2.24% 65%5.52%150.00%8.28% 75%6.74%150.00%10.11% 85%7.35%150.00%11.02% 95%7.54%150.00%11.32% 105%7.47%150.00%11.21% 115%7.01%150.00%10.51% 125%6.49%150.00%9.74% 135%5.86%150.00%8.79% 145%5.27%150.00%7.91% 155%4.61%150.00%6.92% 165%4.10%150.00%6.15% 175%3.47%150.00%5.20% 185%3.08%150.00%4.61% 195%2.56%150.00%3.85% 205%2.25%150.00%3.37% 215%1.90%150.00%2.86% 225%1.66%150.00%2.49% 235%1.39%150.00%2.09% 245%8.15%150.00%12.23% Total142.31% DF90.06% Investor Value128.17%
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Graphical representation of the two different digital outputs - Digital nature of structure produces spike in the return - Higher digital return probability for Jim Reid assumptions - Redistribution of probabilities for lower returns
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Conclusions - You can extract value if your market view differs from the “view” implied by the derivatives market - Distortions in the market exists due to supply and demand (dumb money versus smart money) - Structured investments can offer boringly-predictable outcomes Next time – fitting structured investments into your overall asset allocations?
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