poison pill
A shareholder rights plan that makes a hostile takeover prohibitively expensive by allowing existing shareholders to buy additional shares at a discount if an unwanted buyer acquires a large stake.
Example
“The board activated the poison pill, allowing shareholders to buy stock at half price if the hostile bidder exceeded 15% ownership.”
Memory Tip
POISON PILL = a defense that makes acquiring the company too expensive. Poisons the deal for the buyer.
Why It Matters
Understanding poison pills matters because they affect stock prices and company valuations, which impact your investment portfolio if you own shares in companies that implement them. These defensive strategies can protect your long-term investment from sudden ownership changes that might harm the company, or conversely, they might prevent beneficial mergers that could increase shareholder value.
Common Misconception
Many people believe poison pills permanently prevent all takeovers, but they actually just make hostile takeovers more expensive and give the board time to find alternatives. The board can still negotiate with a buyer or shareholders can vote to remove the poison pill if they believe a takeover offer is fair and beneficial.
In Practice
If a company has a poison pill in place and an investor attempts to buy 15 percent of shares at 50 dollars per share, existing shareholders might gain the right to purchase new shares at 25 dollars each. This immediate dilution makes the acquisition far more costly for the unwanted buyer, potentially costing them hundreds of millions of dollars in additional capital needed to complete the takeover.
Etymology
Like a literal POISON PILL — a defense mechanism that makes swallowing the company toxic to the acquirer.
Common Misspellings
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