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GAL ZAHAVI, AMITAY KAUFFMAN
Financial Engineering and Risk Management Lab
TECHNION-ISRAEL INSTITUTE OF TECHNOLOGY
THE WILLIAM DAVIDSON FACULTY OF INDUSTRIAL ENGINEERING & MANAGEMENT
0
50
100
150
200
29/01/1993
S&P500
S&P500
Forecasting Extreme Events Risk - FEER Index
Efficient Financial Markets
0
50
100
150
200
250
18/11/201007/01/2011
26/02/2011
17/04/2011
06/06/2011
26/07/2011
14/09/201103/11/201123/12/201111/02/2012
confidence 95%
SPY
confidence 99%
Forecasting Extreme Events Risk - FEER Index
If we avoid extreme losses: daily return
The total return:
-0.15 -0.1 -0.05 0 0.05 0.1 0.15
Frequency
confidence 99%
Heavy Tail
Forecasting Extreme Events Risk - FEER Index
Sequence of
World Events
Associated
Gamble
Gamble
Riskiness
Investment
Rule
}
0
,
{
0
},
0
,
max{
)
.
( t
r
VaR
t
t r
VaR
e
i
g
payoff
g
price






 I
-0.2 -0.1 0 0.1 0.2
Freque
ncy
)
(
~
,
),
(
~
),
(
~ 1
1
1 n
t
n
t
n
t
t
t
t
t
t
t r
P
r
r
P
r
r
P
r 




 

R
gt )
(

asset
free
risk
in
invest
k
g
asset
underling
in
invest
k
g
t
t



)
(
)
(


Oprimization of Conditional Value at Risk
RT Rockafellar, S Uryasev- Journal of risk, 2000
Conditional Value at Risk VaR:
Artzner et al. (1998)
Forecasting Extreme Events Risk - FEER Index
Distribution Moments Sensitive
– Risk Measures
After Taylor expansion:
The Measure is sensitive to all moments of the distribution.
Is the root of the polynomial
Forecasting Extreme events Risk - FEER Index
The Measure impose a complete order on all the gambles
Personal Wealth
Forecasting Extreme Events Risk - FEER Index
No need to invers an integral equation to compute
VaR CVaR
Down Side - Risk Measures
Forecasting Extreme Events Risk - FEER Index
& Sensitive to High Moments
CVaR FEER - Index
Down Side
Sensitive to
Tail Risk
Sensitive to High Moments
CVaR - Real World Probability P
VaR - Risk Neutral Probability Q
Forecasting Extreme Events Risk - FEER Index
𝐶𝑉𝑎𝑅𝛼 =
−∞
𝑉𝑎𝑅
𝑉𝑎𝑅 − 𝑟 𝑝𝑡 𝑟 𝑑𝑟
-0.15 -0.1 -0.05 0 0.05 0.1 0.15
Frequency
confidence 99%
Forecasting Extreme Events Risk - FEER Index
Forecasting Extreme Events Risk - FEER Index
Down Side - Risk Measures
Down Side +Tail Sensitive
Associated Gambles
FEER - Index
Underline Extreme
events
r
Forecasting Extreme Events Risk - FEER Index
 Down side risk measure.
 Coherent .
 Sensitive to high moments.
 Stochastic dominance.
 Generates complete order on all gambles.
 Dynamically calibrated to implied market
probability.
FEER – Index
The End To Our Fear

Forecasting Extreme Events Risk - FEER Index

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FEER-Index -Forecasting Extreme Events Risk

Editor's Notes

  1. In 2008, the $S\&P500$ aggregated a loss of 30.16\% during three selected days. Unfortunately benchmark risk measures didn't forecast these hazards.
  2. How do we grasp risk? Overweighting of downside risk.
  3. Open question For machine learning\ algorithmic trading - industry Forecast three selected days that change the hole annual income. (simple mathe)
  4. Access return from simple technical trading.
  5. The real tail distribution behavior is the market normal? what is the ma Justified risk avers from stocks prices.
  6. Recognition of the importance of downside risk as an important investment decision toll. World wide adoption for down side risk as the leading risk factor for investment decision.
  7. Default of risk measure Insensitive to different tail risk Doesn't obey sub additivety
  8. Correction of the risk measure to the expected loss not forming a complete order Only first lower partial moment is taken into account linear approximation.
  9. Economic incentive is bankruptcy risk Forms a complete order, Coherent, stochastically dominated
  10. Economic Incentive risk averseness also forms a complete order.
  11. How do we create a risk measure that imbeds all properties?
  12. How do we assess the prior distribution
  13. And what is the interpretation VaR under the implied distribution
  14. Liquid traded asset that reflects the downside risk!!!!!!!!
  15. WAWWWWWWWWWWWWWWWWWWWWWWWWWWW
  16. The real tail distribution behavior is the market normal? what is the ma Justified risk avers from stocks prices.
  17. What is the riskiness of put(VaR) according to R_AS or R_FH What is the riskiness of a Put? The underline r associated down side risk is the put gamble, Can we extract more information regarding the downside risk? The put gamble has a riskiness depending on the tail distribution In particular if the
  18. Construction of the index!!!!