Lock

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Lock

Used in the context of general equities. Make a market both ways (bid andoffer) either on the bid, offering, or an in-between price only. Locking on the offering occurs to attract a seller, since the trader is willing to pay (and ask) the offering side when others only ask it. Locking on the bid side attracts buyers for similar reasons. Typically, the sell side requires a plus tick to comply with short sale rules.
References in periodicals archive ?
These numbers were for preservative-free, porcine heparin lock flush 100 units/mL intravenous solution, containing heparin, sodium chloride, and hydrochloric acid or sodium hydroxide as needed for pH.
2005) and the increased risk of haemorrhage from inadvertent administration of heparin locks.
The Tego catheter is also designed as a "neutral displacement connector," which means when the blood tubing or a syringe is removed from the cap, a minimal reflux of blood flows into the catheter lumen, thus potentially eliminating the need for a heparin lock.
M2 EQUITYBITES-6 July 2010-APP Pharmaceuticals Inc secures marketing clearance for preservative-free Heparin Lock Flush Solution, USP(C)2010 M2 COMMUNICATIONS http://www.
The practice of sequentially administering sedation medications using the same syringe and needles to all patients in an individual clinic session through a heparin lock attached to an IV cannula was determined to be the mechanism for patient-to-patient transmission of HBV and HCV.

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