For most starbonds, the Trailing Average Gross is the average North American box office take of their five most recently-released movies. Other, similar formulas apply to starbonds that are attached to fewer than five moviestocks, and you can check those formulas in the HSX Glossary under "Trailing Average Gross".
Most starbond calculations are very simple, and you can easily do them in your head or on a piece of paper. One way of making the calculation is by following these easy steps:
- Subtract the gross of the movie dropping out of the TAG from the expected gross of the movie coming in.
- Divide that number by five.
- Add the result to the starbond's TAG to get the estimated adjust price.
- Compare the estimated adjust price to the current price.
- Invest (or not) accordingly.
Not every starbond adjust is simple, and there are a few exceptions and technicalities which are discussed in another column.