firms Unlike the other Greeks, implied volatility was unknown. 6 t Implied volatility Realized volatility t + 1 • It was calculated by reverse engineer process from the option price at time t. • Implied
]St0 HC = Ct1−[Delta]St1 DeltaBS = f ( St0, K, T, r, σ ) Historical statistic : Standard deviation Implied statistic : Min ∑ (Cmarket – C theoretical) 2 DeltaWM = f ( St0, K, T, r, μ, σ* ) σ* = f (r, μ
similar period of time; (4) Placing, modifying, or cancelling a securities trading order during the pre-opening or pre-closing period of the Securities Exchange or the over-the-counter center, as the
ไดรบัอนุญาต ตองจัดใหมีการเปดเผยขอมูลเพื่อเปรียบเทียบคาความผันผวนแฝง (implied volatility) กับคาความผันผวนในอดีต (historical volatility) บน website ของผูออก DW โดยเปนการเปดเผย อยางตอเนื่อง
prospectus; - continuing disclosure of the implied volatility in comparison to the historical volatility on the website of the DW issuer; - disclosure of a warning statement regarding the gearing ratio, a
: The SET shall comply with the regulatory objectives and the operating rules of securities exchange. In issuing, revising or modifying its rules and regulations, the SET must conduct a hearing session
are allowed to also inform the SEC of the names of foreign business operators instead of only the names of the foreign personnel as previously required; 2. Modifying the requirements for notifying the
at least on a quarterly basis;5. Modifying consideration procedures of underlying indices, management strategies, and disclosure requirements for inbound foreign ETFs to be in line with those
, according to their underlying assets, but at least on a quarterly basis; 5. Modifying consideration procedures of underlying indices, management strategies, and disclosure requirements for inbound foreign