delta

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delta

 [del´tah]
1. the fourth letter of the Greek alphabet, Δ or δ; used in chemical names to denote the fourth of a series of isomeric compounds or the carbon atom fourth from the carboxyl group, or to denote the fourth of any series.
2. a triangular area.

Δ

1. Fourth letter of the Greek alphabet, delta.
2. In chemistry, denotes a double bond, usually with a superscript to indicate position in a chain (Δ5), application of heat in a reaction (A B), absence of heat treatment (), distance between two atoms in a molecule, or position of a substituent located on the fourth atom from the carboxyl or other primary functional group (δ); change (Δ); thickness (δ); chemical shift in NMR (δ).
3. anatomy a triangular surface.

del·ta (Δ),

(del'tă),
1. Fourth letter of the Greek alphabet, Δ (capital), δ (lower case).

YY1

A gene on chromosome 14q that encodes a ubiquitous transcription factor belonging to the GLI-Kruppel class of zinc finger proteins, which directs histone deacetylases or histone acetyltransferases to myriad promoters activating or repressing their activity, implicating histone modification in YY1 activity.

δ,

Δ
Abbreviation for delta; diopter.

del·ta

(Δ, δ) (del'tă)
1. Fourth letter of the Greek alphabet.
2. chemistry A double bond, usually with a superscript to indicate position in a chain (Δ5); application of heat in a reaction (A B); absence of heat treatment (Δ); distance between two atoms in a molecule, or position of a substituent located on the fourth atom from the carboxyl or other primary functional group (δ); change (Δ); thickness (δ); chemical shift in NMR (δ).
3. anatomy A triangular surface.

Δ

, δ
1. Fourth letter of the Greek alphabet, delta.
2. anatomy a triangular surface.
References in periodicals archive ?
Figure 5 shows the optimal hedge ratio calculated under SQDGH (panel 1) and the futures risk premium (panel 2).
In order to get the optimal hedge ratio, let the derivative of variance of the portfolio be equal to 0; namely,
Table 4 reports ex-ante (before the resolution of uncertainty) risk minimising hedge ratios for each year over 1990-2013 and contrasts the performance of unhedged portfolio with four ex-ante hedged portfolios.
and Shrestha, K., 'An Empirical Analysis of the Relationship between 44the Hedge Ratio and Hedging Horizon: A Simultaneous Estimation of the Short- and Long-Run Hedge Ratios', 2004, Journal of Futures Markets, vol.
Under departures from the cost-of-carry theory, historical market information, conditional variance, and conditional correlation implied from emissions allowances futures markets have significant impacts on time-varying hedge ratios and hedging effectiveness.
Idiosyncratic risk 0.065 0.043 0.065 Market risk 0.850 0.724 0.667 Total risk 0.079 0.053 0.080 Tobin's Q 1.069 1.010 0.188 Return on equity 0.047 0.093 0.238 Hedge Ratio (%) 0.364 0.372 1.150 IG_Ratio (%) 0.084 0.240 0.205 Net Buy/Risky 0.122 0.004 0.352 Bonds (%) Net Sell/Liabilities 0.483 0.118 0.830 (%) Bond ratio (%) 71.14 76.28 23.09 Stock ratio (%) 4.34 2.11 6.54 Line diversification 0.298 0.317 0.255 Geographic 0.677 0.915 0.386 diversification Other_Derivatives 0.551 1.000 0.498 Reinsurance (%) 16.21 4.78 24.95 Premium of long 0.479 0.497 0.393 tails Premium growth 0.726 0.962 0.395 Liability (%) 76.27 89.31 28.14 RBC_Reg 45.30 7.26 111.56 Total asset ($M) 17,309 5,713 25,090 Rating 0.721 0.818 0.449 PC Mean Median Std.
Summary of Percentage Change in Cash Flows from Hedges versus Changes in Cash Flows from the Expected Natural Gas Purchases for Optimal Hedge Ratio Simulations Across All Months, 2001-2006.
If the derivative and the hedged item are not very similar, the regression method will be superior, if the variance-minimizing hedge ratio deviates materially from -1 and is stable over time.
He confused his pipeline delta, or hedge ratio, with his expected closing ratio.
To achieve this purpose the hedger has to determine the optimal hedge ratio. The optimal hedge ratio has usually been found by regressing the returns to holding spot asset on the returns to holding the hedging instruments.