TIME TRADING ACTIVITY OPEN INTEREST
Jan 1 A buy 1 option and B sell 1 option 1
Jan 2 C buy 1 option and D sell 5 option 2
Jan 3 A sell his 1 option and D buy 1 option 5
Jan 4 E buy 5 option and C sell his 5 option 5
- On Jan 1, A buys an option, which leaves an open
interest and also creates trading volume of 1
- On Jan 2, C and D create trading volume of 5 and there
are also 5 more options left open
- On Jan 3, A takes an offsetting position and therefore
open interest is reduced by 1, and trading volume is 1
- On Jan 4, E simply replaces C and therefore open
interest does not change, trading volume increases by 5.
What Open Interest Tells Us
Rules of Open Interest
- If prices are rising and open interest is increasing at
a rate faster than its average, this is a bullish sign. More participants
are entering the market, involving additional buying, and any purchases
are generally aggressive in nature
- If the open-interest numbers flatten following a rising
trend in both price and open interest, take this as a warning sign of an
impending top
- High open interest at market tops is a bearish signal
if the price drop is sudden, since this will force many 'weak' longs to
liquidate. Occasionally, such conditions set off a self-feeding, downward
spiral
- An unusually high or record open interest in a bull
market is a danger signal. When a rising trend of open interest begins to
reverse, expect a bear trend to get underway
- A breakout from a trading range will be much stronger
if open interest rises during the consolidation. This is because many
traders will be caught on the wrong side of the market when the breakout
finally takes place. When the price moves out of the trading range, these
traders are forced to abandon their positions. It is possible to take this
rule one step further and say the greater the rise in open interest during
the consolidation, the greater the potential for the subsequent move
- Rising prices and a decline in open interest at a rate
greater than the seasonal norm is bearish. This market condition develops
because short covering and not fundamental demand is fueling the rising
price trend. In these circumstances money is flowing out of the market.
Consequently, when the short covering has run its course, prices will
decline
- If prices are declining and the open interest rises
more than the seasonal average, this indicates that new short positions
are being opened. As long as this process continues it is a bearish
factor, but once the shorts begin to cover it turns bullish
- A decline in both price and open interest indicates
liquidation by discouraged traders with long positions. As long as this
trend continues, it is a bearish sign. Once open interest stabilizes at a
low level, the liquidation is over and prices are then in a position to
rally again.
Volume and open interest
Volume precedes price, which means that the loss of either upside price pressure in an uptrend or downside pressure in a downtrend will show up in the volume figures before presenting itself as a reversal in trend on the bar chart. The rules that have been set in stone for both volume and open interest are combined because of their similarity; however, having said that, there are always exceptions to the rule, and we should look at them.
PRICE VOLUME OPEN INTEREST MARKET
RISING UP UP STRONG
RISING DOWN DOWN WEAK
DECLINING DOWN DOWN WEAK
DECLINING DOWN DOWN STRONG
If prices are in a downtrend and open interest is on the rise, chartists know that new money is coming into the market, showing aggressive new short selling. This scenario will prove out a continuation of a downtrend and a bearish condition. Lastly, if the total open interest is falling off and prices are declining, the price decline is being caused by disgruntled long position holders being forced to liquidate their positions. Technicians view this scenario as a strong position technically because the downtrend will end as all the sellers have sold their positions. The following chart therefore emerges:
Bullish- an increasing open interest in rising market
Bearish:- a declining open interest in a rising market
Bearish:- an increasing open interest in a falling market
Bullish:- a declining open interest in a falling market