The expression consists of one or more primitives. Possible types are host, net , port and binary option atm. Alternation and concatenation have equal precedence and associate left to right.
Note that explicit and tokens, not juxtaposition, are now required for concatenation. If an identifier is given without a keyword, the most recent keyword is assumed. SYN and FIN packets and ACK-only packets. IPv6 is left as an exercise for the reader. This was taken from the man page of tcpdump.
Jump to navigation Jump to search This article is about the financial investment strategy. This article includes a list of references, but its sources remain unclear because it has insufficient inline citations. In finance, a straddle strategy refers to two transactions that share the same security, with positions that offset one another. One holds long risk, the other short. A straddle involves buying a call and put with same strike price and expiration date.
If the stock price is close to the strike price at expiration of the options, the straddle leads to a loss. However, if there is a sufficiently large move in either direction, a significant profit will result. A straddle is appropriate when an investor is expecting a large move in a stock price but does not know in which direction the move will be. The purchase of particular option derivatives is known as a long straddle, while the sale of the option derivatives is known as a short straddle.
A long straddle involves “going long,” in other words, purchasing both a call option and a put option on some stock, interest rate, index or other underlying. For example, company XYZ is set to release its quarterly financial results in two weeks. A trader believes that the release of these results will cause a large movement in the price of XYZ’s stock, but does not know whether the price will go up or down. He can enter into a long straddle, where he gets a profit no matter which way the price of XYZ stock moves, if the price changes enough either way. If the stock is sufficiently volatile and option duration is long, the trader could profit from both options.