Maturity

The date on which a debt obtained in a margin account for purchase of securities comes to due for payment is known as maturity.  The maturity is usually the date of settlement or expiry of a financial instrument.
The date on which a debt obtained in a margin account comes to maturity the investor is supposed to repay the debt with the due applicable interest rate on the loan.  The maturity date can be just a couple of business days or it can even extend through years.
There are many different kinds of maturity like balloon maturity, yield to maturity, variable maturity option etcetera.
In balloon maturity, a due that sets in when the maturity date of the bond sets in.
Variable maturity refers to a bond that reaches due before the expiry date.
Yield to maturity refers to the anticipated date of return related to a bond.
By all means maturity marks a settlement of one kind or the other on a particular due date.