Greeks (finance)

In mathematical finance, the Greeks are the quantities representing the sensitivity of the price of derivatives such as options to a change in underlying parameters on which the value of an instrument or portfolio of financial instruments is dependent. The name is used because the most common of these sensitivities are denoted by Greek letters (as are some other finance measures). Collectively these have also been called the risk sensitivities,risk measures or hedge parameters.

Use of the Greeks

The Greeks are vital tools in risk management. Each Greek measures the sensitivity of the value of a portfolio to a small change in a given underlying parameter, so that component risks may be treated in isolation, and the portfolio rebalanced accordingly to achieve a desired exposure; see for example delta hedging.

The Greeks in the Black–Scholes model are relatively easy to calculate, a desirable property of financial models, and are very useful for derivatives traders, especially those who seek to hedge their portfolios from adverse changes in market conditions. For this reason, those Greeks which are particularly useful for hedging—such as delta, theta, and vega—are well-defined for measuring changes in Price, Time and Volatility. Although rho is a primary input into the Black–Scholes model, the overall impact on the value of an option corresponding to changes in the risk-free interest rate is generally insignificant and therefore higher-order derivatives involving the risk-free interest rate are not common.

Vega (band)

Vega is a Turkish alternative rock band, founded by keyboardist Gökhan Mert Koral (also vocalist on some songs), vocalist Deniz Özbey, and guitarist Esat Tuğrul Akyüz in 1996. Gökhan Mert Koral left the group in early 2003. They played in many Turkish festivals like Rock 'n Coke. Their biggest hits were Bu Sabahların Bir Anlamı Olmalı, Serzenişte, Elimde Değil.

For their first album Tamam Sustum, the group collaborated with Turgay Gülaydın from Athena and Burak Karataş from Kargo.

Discography

Tamam Sustum (OK I Shut Up) (NR1 Müzik) (1999)

Tatlı Sert (Bittersweet) (Universal Music) (June 2002)

Vega (Gijón)

Vega is a parish of the municipality of Gijón / Xixón, in Asturias, Spain.

Its population was 3,507 in 2012.

Vega is a residential and rural area, bordering with the districts of Granda, Castiello Bernueces, Santurio, Caldones, Llavandera y Samartín de Güerces.

The famous La Camocha coal mine (closed 2007) was located in Vega. The mining town of La Camocha (including El Vaticano and Ciudad Virginia barrios) is located in the mine surroundings.

Villages and their neighbourhoods

External links

Triana (Alenquer)

Triana (Portuguese pronunciation: [tɾiˈɐnɐ]) is a former civil parish, located in the municipality of Alenquer, in western Portugal. In 2013, the parish merged into the new parish Alenquer (Santo Estêvão e Triana). It covers 32.28 km² in area, with 3532 inhabitants as of 2001.

References

Triana, Seville

Triana is a neighbourhood and administrative district on the west bank of the Guadalquivir River in the city of Seville, Spain. Like other neighborhoods that were historically separated from the main city, it was known as an arrabal. Triana is located on an almost-island between two branches of the Guadalquivir, narrowly linked to the mainland in the north. Two other districts are also usually included in this area, Los Remedios to the south and La Cartuja to the north.

Residents of Triana have traditionally been called trianeros; they identify strongly with the neighborhood and consider it different in character from the rest of Seville. Triana has a traditional pottery and tile industry, a vibrant flamenco culture, and its own festivals; it has played an important role in the development of Sevillan culture and tradition.

Etymology

Legend holds that Triana was founded as a Roman colony by the emperor Trajan, who was born in the nearby city of Italica; the name "Triana" supposedly derived from the original denomination of Trajana. The name may be a combination of the Latin tri, meaning "three", and the Celtiberian ana, meaning "river", since the Guadalquivir river split into three branches nearby. Another hypothesis suggests that the derivation of "Triana" is from the Latin expression Trans amnem, meaning "those beyond the river".

Triana (band)

Triana was a Spanish progressive rock band from the 1970s and early 1980s, heavily influenced by flamenco, hailing from Andalusia. It was composed of Jesús de la Rosa Luque (Seville) (voice and keyboards), Eduardo Rodríguez Rodway (Seville) (voice and guitar) and Juan José Palacios "Tele" (Puerto de Santa María, Cádiz) (drums and percussion). Regarded as one of the most important Spanish rock bands ever, it was also one of the most influential bands of the Andalusian rock.

History

The main goal of the band was to merge flamenco music with psychedelic rock and progressive rock. The band was influenced by other progressive rock-bands, like Vanilla Fudge and the early King Crimson. The band developed a hard progressive and experimental sound during its three first albums. Later, the sound turned into more fresh pop.

El Patio, Triana's debut, was released in 1975, and it had a strong influence on the post-Franco young people, despite poor marketing and promotion. Two songs stood out in this album, and became standards of the group: "Abre la puerta" and "En el lago". The latter is a surrealistic evocation of an LSD trip. El Patio is considered the founder of a rock-style developed in Andalusia called Andalusian rock.