Clearance

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Clearance

The process of settling transactions. Most exchanges have one or more clearing houses, which are charged with matching orders together, ensuring that deliveries are made to the correct parties, and collecting margin money. Because so many trades take place on an exchange in a given day, clearing houses exist to process what each party owes or is owed in a central location so the fewest securities actually change hands. For example, suppose that a broker-dealer buys 1000 shares of a security and then, in a completely separate transaction, sells 700 of the same shares. At the end of the trading day, the clearing house would determine that the broker-dealer must only buy 300 shares as the other 700 belong to another party. Clearing houses receive a clearing fee in exchange for clearance services.

Clearance.

Clearance is the first half of the process that completes your order to buy or sell a security. During clearance, the details on both sides of the transaction are compared electronically to ensure that the order to buy and the order to sell correspond.

For example, in a stock transaction, the Committee on Uniform Securities Identification Procedures (CUSIP) number, the number of shares, and the price per share must match.

Next, transactions within each broker-dealer are netted down, or offset, by matching its clients' buy orders against sell orders from others of its clients or among a group of affiliated firms. Their records are then updated to reflect the new ownership and account balances.

Any unmatched orders are forwarded to the National Securities Clearing Corporation (NSCC), which instructs selling broker-dealers to provide the relevant securities and the buying broker-dealer to send the cash.

References in periodicals archive ?
The NSTT is, however, a direct functional measure of mucociliary clearance of the upper airway.
Effect of betamethasone and betamethasone with neomycin nasal drops on human nasal mucociliary clearance and ciliary beat frequency.
As the health consequences of poor mucociliary clearance became increasing clear, physicians and caregivers were motivated to search for ways to clear airway mucus.
Asthma, chronic cigarette smoking and cystic fibrosis also impair mucociliary clearance, and must be excluded before poor MC performance is attributed to infection.
Their activation can enhance mucociliary clearance [18].
In addition to its inflammatory effect, smoking is also known to decrease the mucociliary clearance of the laryngeal mucosa, resulting in excess mucus secretions and pooling.
The present meta-analysis shows a significant advantage of mucociliary clearance changes with thermal water in comparison to isotonic saline solution.
Dynlrb2 is differentially expressed in patients with primary ciliary dyskinesia, a condition that can lead to the development of bronchiectasis due to impairment of mucociliary clearance (Geremek et al.
It is a solution of recombinant human deoxyribonuclease I (rhDNase), an enzyme that decreases the viscosity of the mucus and improves mucociliary clearance. Because of the improvement of mucociliary clearance in these patients, dornase alfa reduces the incidence of recurrent bacterial infections which can be so detrimental in the treatment of patients with CF.
The researchers conclude that, "although NSI has been shown to improve nasal mucociliary clearance, its daily long-term use may result in increased frequency of acute infection by potentially depleting the nose of its immune blanket of mucus.
One placebo-controlled, randomized controlled trial evaluated the effect on mucociliary clearance from adding nasal saline, nasal steroids, or oxymetazoline to antibiotics in acute bacterial sinusitis.