DEFINITION of 'Proration'

Proration is a situation that can arise during a specific corporate action, such as an acquisition. In certain situations, the acquiring firm will offer a combination of cash and equity, and shareholders of the firm being acquired can elect to take either. Following the shareholder election, remaining stock is prorated if available cash or shares are not sufficient to satisfy the offers that shareholders tender. If this occurs, the company grants a proportion of both cash and shares for each offer tendered so that everyone still gets their fair share of the deal.


Proration supports shareholders by ensuring that a company can stick to its initial target and not favor some investors over others (e.g. giving a percentage of shareholders the cash they wanted while delivering shares to the rest). While this means that every investor might not receive their initial election; it does ensure that all investors receive the same reward.

Other situations in which the need for proration might occur include bankruptcy or liquidation, special dividends, stock splits, and spinoffs. While these corporate actions must be approved by shareholders, and a company will typically list them on a firm's proxy statement, filed in advance of a public company's annual meeting, individual shareholders must still occasionally sacrifice to maximize wealth for all shareholders.

Proration and Additional Merger Considerations

Mergers occur for several reasons, including to gain market share through a horizontal merger, reduce the costs of operations through a vertical merger, expand to new markets, and/or unite common products through a cogeneric merger, all to grow revenues and increase profits for the benefit of the firm's shareholders. After a merger, shares of the new company are distributed to existing shareholders of both original businesses.

An example of a merger of two companies in separate industries is the 2017 Amazon/Whole Foods merger that garnered enormous investor and media attention. Amazon acquired the organic grocery chain Whole Foods for $13.7 billion in cash, after shareholder and regulatory approvals. For Amazon, this represented a major advancement in its attempt to sell groceries online and its competition with grocery retailer Walmart. For Whole Foods, this helped answer some of its financial difficulties.

When deciding to merge, in addition to how both companies will reward shareholders, it is important to take into consideration the Federal Trade Commission’s guidelines on keeping the industry competitive and avoiding the creation of monopolies. For example, it’s important to ask whether a proposed merger will create or enhance market power or not. Antitrust concern arises particularly with proposed horizontal mergers between direct competitors.

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