yaobooyao 发表于 2013-1-25 12:47 PM 
不是开盘，是周五的收盘价格。
不过，我觉得为了做盘的需要，市场常常在Option expiration day 低开高 ...
S&P 500 ® Index Options
Symbol: SPX
Underlying:
The Standard & Poor's 500 Index is a capitalization-weighted index of 500 stocks from a broad range of industries. The component stocks are weighted according to the total market value of their outstanding shares. The impact of a component's price change is proportional to the issue's total market value, which is the share price times the number of shares outstanding. These are summed for all 500 stocks and divided by a predetermined base value. The base value for the S&P 500 Index is adjusted to reflect changes in capitalization resulting from mergers, acquisitions, stock rights, substitutions, etc.
Index Components
Multiplier:
$100.
Premium Quote:
Stated in decimals. One point equals $100. Minimum tick for options trading below 3.00 is 0.05 ($5.00) and for all other series, 0.10 ($10.00).
Strike Prices:
In-,at- and out-of-the-money strike prices are initially listed. New series are generally added when the underlying trades through the highest or lowest strike price available.
Strike Price Intervals:
Five points. 25-point intervals for far months.
Expiration Months:
Up to twelve (12) near-term months. In addition, the Exchange may list up to ten (10) SPX LEAPS® expiration months that expire from 12 to 60 months from the date of issuance.
Expiration Date:
Saturday following the third Friday of the expiration month.
Exercise Style:
European - SPX options generally may be exercised only on the last business day before expiration.
Last Trading Day:
Trading in SPX options will ordinarily cease on the business day (usually a Thursday) preceding the day on which the exercise-settlement value is calculated.
Settlement Value:
Exercise will result in delivery of cash on the business day following expiration. The exercise-settlement value, SET, is calculated using the opening sales price in the primary market of each component security on the last business day (usually a Friday) before the expiration date. The exercise-settlement amount is equal to the difference between the exercise-settlement value and the exercise price of the option, multiplied by $100.
Position and Exercise Limits:
No position and exercise limits are in effect. Each member (other than a market-maker) or member organization that maintains an end of day aggregate position in excess of 100,000 contracts in SPX and Mini-SPX (10 Mini-SPX options equal 1 SPX full value contract) for its proprietary account or for the account of a customer, shall report certain information to the Department of Market Regulation. The member must report information as to whether such position is hedged and, if so, a description of the hedge employed e.g. stock portfolio current market value, other stock index option positions, stock index futures positions, options on stock index futures; and for customer accounts, provide the account name, account number and tax ID or social security number. A report must be filed when an account initially meets the aforementioned applicable threshold. Thereafter, a report must be filed for each incremental increase of 25,000 contracts. Reductions in an options position do not need to be reported. However, any significant change to the hedge must be reported.
this is the one I was talking about. i know most of individual stock are settled at the end of day price. |
狗仔卡
发表于 2013-1-25 09:57 AM
提升卡
置顶卡
沉默卡
喧嚣卡
变色卡
发表于 2013-1-25 10:02 AM
发表于 2013-1-25 10:56 AM
