Public Float

The number of issued and outstanding shares of a company, excluding shares held by persons who, individually or in conjunction with other persons, hold 20% or more of the issuer’s voting securities.

Push-Out

A push-out occurs during a stock split when new shares are forwarded to the registered holders of old share certificates, without the holders having to surrender the old shares. Both the old and new shares have equal value.

Program Trading

Trades based on signals from computer programs. These are usually entered directly from the traders computer to the market’s computer system. Program trading accounts for an increasingly larger and larger portion of all trades throughout the day. Additionally, these large trades may be hedged by an offsetting position in index futures.

Last Sale Price

For a Market On Close (MOC)-eligible security, the last sale price equals the calculated closing price. If the MOC closing price acceptance parameters are exceeded, it equals the last board lot sale price of the security on the exchange in the regular trading session.For any other listed security, the last sale price equals the last board lot sale price of the security on the exchange, in the regular trading session.

Dutch Auction

A method of allocating shares in an IPO where you specify how much you’re willing to pay for how many shares.

Put/Call Ratio

The ratio of put trading volume divided by the call trading volume. For example, a put/call ratio of 0.74 means that for every 100 calls bought, 74 puts were bought. It is a contrary indicator. A reading of 1.0 or more is very bullish as most people think the market is going down. When the majority thinks the market is going to move a certain direction, it usually does the opposite.