QIP, ADR, ADS, FCCB, P-notes, warrants

I have found information about above security classes from investopedia.

ADR is negotiable certificate issued by a U.S. bank representing a specified number of shares (or one share) in a foreign stock that is traded on a U.S. exchange. ADRs are denominated in U.S. dollars, with the underlying security held by a U.S. financial institution overseas. ADRs help to reduce administration and duty costs that would otherwise be levied on each transaction.

When you own an ADR, you have the right to obtain the foreign equity it represents, although most U.S. investors find it easier to own the ADR.

An American depositary share (ADS), on the other hand, is the actual underlying share that the ADR represents. In other words, the ADS is the actual share trading, while the ADR represents a bundle of ADSs.

An IDR is the non-U.S. equivalent of an American Depositary Receipt (ADR).
A GDR is very similar to an American Depositary Receipt.

P-notes are similar to ADRs. It is investment vehicle for foreign investors which are not registered with SEBI. India based brokerages buy on behalf of foreign
investors. Indian regulators are not comfortable with anonymity of p-notes.

QIP
A designation of a securities issue given by the Securities and Exchange Board of India (SEBI) that allows an Indian-listed company to raise capital from its domestic markets without the need to submit any pre-issue filings to market regulators. The SEBI instituted the guidelines for this relatively new Indian financing avenue on May 8, 2006. This was created to stop undesirable export of domestic equity market due to preference of ADR amongst Indian companies.

A warrant, like an option, gives the holder the right but not the obligation to buy an underlying security at a certain price, quantity and future time. However, unlike an option, an instrument of the stock exchange, a warrant is issued by a company. The security represented in the warrant (usually share equity) is delivered by the issuing company instead of an investor holding the shares.

FCCB means foreign currency convertible bond
Issuer has advantage of lower coupon rate due to convertibility.
Buyer has advantage of stock appreciation.