Both of these indicators, Odd Lot Purchases and Odd
Lot Sales, display what their names imply: the number of shares (in
thousands) purchased or sold in odd lots. An "odd lot" is a stock
transaction of less than 100 shares.
(Unfortunately, the trading of 99 share lots in an
effort to skirt the "up-tick" rule, which requires that specialists take
short positions only when prices move upward, has rendered Odd Lot
indicators less reliable.)
Interpretation
The odd lot trade numbers are used in several
different ratios and indicators. By themselves, they show the investment
activities of the odd lot traders. Being a contrarian indicator, a high
number of Odd Lot Purchases is generally considered bearish, whereas a
high number of Odd Lot Sales is considered bullish. The idea is to act
opposite of the small, uninformed odd lot traders.
However, it has been my experience that, for
whatever reason, the odd lotters have tended to be on the right side of
the market recently.
Example
The following chart shows the Value Line Composite
Index and a 10-day moving average of Odd Lot Sales.
I drew vertical lines when the odd lotters were
selling (as identified by relatively high moving average values).
Conventional odd lot interpretation would have you buy at these points.
However, in retrospect, it appears that these were appropriate
short-term selling points.