delta1

Delta1 is a designation that appears in several unrelated fields. In finance, Delta One (Delta1) describes a broad category of derivative and structured products whose price movements closely track the underlying asset, yielding a delta near one. Instruments include forwards, futures, swaps, and synthetic exchange-traded products; they are used for hedging, arbitrage, and efficient replication of returns. Risks include credit risk, liquidity risk, and tracking error, and regulation is active in many markets.

In biology, Delta-like protein 1 (DLL1) is a transmembrane ligand in the Notch signaling pathway, encoded by the DLL1 gene. DLL1 binds Notch receptors on neighboring cells to regulate cell fate decisions during embryonic and tissue development. It is part of the Delta/Serrate/Lag-1 family of Notch ligands; deregulation has been linked to developmental disorders and cancer.

Other uses: Delta1 may appear as a model or product name in engineering, or as a variant designation in chemistry or mathematics, typically as a contextual shorthand for a change (delta) or as a serial designation. Because of its generic character, the exact meaning depends on context.