Overwrite


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Overwrite

An option strategy that involves writing more option contracts than the writer expects to have exercised. A writer overwrites contracts in order to collect the premiums. He/she chooses the securities underlying the contracts based on whether they are overvalued or undervalued. One overwrites calls if one believes that the underlying securities are overvalued because one expects a price correction that will result in the calls going out-of-the-money. For the same reason, one overwrites puts if one believes that the underlying securities are undervalued.
References in periodicals archive ?
If you're serious about security, start with multiple overwrites, using software that conforms to Department of Defense specifications.
Using the direct overwrite method, data is erased and rewritten during a single rotation, thereby resulting in a much faster data transfer rate.
But any PC user who is trying to purge his or her system of confidential data will want to completely overwrite the sectors on the hard drive where the data resides.
Then, on command, it will overwrite the older ones with the most recent--eliminating the danger of losing newer files.
Overwriting can be accomplished by various utility programs and commands that overwrite files and free space on disks using alternating patterns of binary digits - 1s and 0s.
MO has the edge in over-writability: one million to 10 million overwrite cycles, vs.
According to the CCEVS evaluation description FDRERASE is an application that runs under the IBM z/OS operating system on a mainframe computer that provides two CCEVS security validated disk erasure functions: ERASE and SECUREERASE that overwrite DASD to ensure the risk of residual data remaining, if any, is appropriate with the risk of a person scavenging for that data.
When retiring IT assets, the optimum means for data destruction calls for no less than a three-time overwrite of the hard drive, set forth by the Department of Defense (DoD).
And coupling Backup Data Encryption with our existing Overwrite and Retention Policy functionality will broaden our customer's ability to comply with governmental regulations.
In addition, the controller includes a Write Protect Pin, which offers hardware protection for the data stored on the flash media from any unintentional data overwrites, such as those commonly caused by system viruses.
Users can select fast 1-pass overwriting which overwrites the memory blocks 1-time, medium strength 2-pass overwriting, or maximum strength 3-pass overwriting which meets the US Department of Defense DOD 5220-22M standard for secure data destruction on digital devices.