Transactions that involve stockholders are primarily the distribution of dividends and the sale or repurchase of the company's stock.
Excluding these transactions, the major source of change in a company's equity is retained earnings, which are a component of comprehensive income. However, there are other sources and thus, other comprehensive income.
Concretely, some examples of other comprehensive income are:
- Revaluations of property, plant and equipment.
- Changes in the fair value of securities categorized as available-for-sale.
- Actuarial gains and losses related to the company's defined benefit pension plan.
Finally, just as the retained earnings figure on the balance sheet is a cumulative amount, the line item that relates to the other comprehensive income is "Accumulated other comprehensive income," which records the cumulative change to stockholders' equity from comprehensive income.