O

1 Obligor

A party who is in debt to another. It can be either (i) a loan borrower, (ii) a bond issuer, (iii) a trader who has not yet settled, (iv) a trade partner with accounts payable, or (v) a contractor with unfinished performance, etc. [See also Counterparty]

2 OCC

Options Clearing Corporation. [See also Clearinghouse]

3 Odd Lot

Stock trading unit of less than 100 shares.

4 Odd-lot Theory

The odd-lot theory is one of several theories of contrary opinion. In essence, the theory assumes that the common mean is usually wrong and that it is, therefore, advantageous to pursue strategies opposite to his thinking. In order to find out what the common man is doing, statistics on odd-lot trading are gathered. Most odd-lot purchases are made by amateur investors with limited resources — that is, by the common man, who is the small, unsophisticated investor.

5 Off-Balance Sheet Activities

Commitments, such as loan guarantees, that do not appear on a bank’s balance sheet but represent actual...