

Usually, there is not that much “news” if SPY opens for example -0.4% down compared to for example 1%. The reason I use -0.6% as the maximum is that SPY shows a lot less mean reversion if opening lower.

The activity in the market before the official opening is easy to spot. Some gaps need many many days to fill, some even months, and some never (applies more to single stocks – not indices). We have previously also written about unfilled gap. You can read more about gaps in this article.

Most small gaps are filled the very same day, while bigger gaps need more time (days) to get filled. It depends on the size of the gap and time. Exhaustion gapsĮxhaustion gaps happen after an already extended move in one direction.įor example, if the S&P has had a sudden move over several days upwards, we have a potential exhaustion gap if it one day gaps up more than normal (average).Īn exhaustion gap signals the end of the move: it’s the climax. However, it’s easy to explain with hindsight. If it gaps up, we can expect higher prices in the future. This gap usually leads to higher or lower prices in the same direction of the gap. Typically, the gaps are in the range of plus/minus 0.25%. Most of the days this is just noise and hardly worth to write about (in the news). For example, the S&P 500 opens up or down more or less every day. Common gapsĪs the name implies, these are gaps that are “common” and frequent. There are many types of gaps, however, the three most common are runaway gaps (breakaway gaps), exhaustion gaps, and common gaps. Other traders might define gaps more stringent: a gap up is when the opening is higher than yesterday’s high, and a gap down when the opening is lower than yesterday’s low. A gap up indicates the opening is higher than the previous close and vice versa. Opening gap strategy in the S&P 500 (SPY Gap Fill)Ī gap is when the opening price (or print) is higher or lower than the previous close.Typical types of information gap activities you might find include describe and draw, spot the difference, jigsaw readings and listenings and split dictations. They provide an opportunity for extended speaking practice, they represent real communication, motivation can be high, and they require sub-skills such as clarifying meaning and re-phrasing. Information gap activities are useful for various reasons. Together they can complete the text by asking each other questions. Learner A has a biography of a famous person with all the place names missing, whilst Learner B has the same text with all the dates missing. An information gap activity is an activity where learners are missing the information they need to complete a task and need to talk to each other to find it.
