Reverse stock split

A reverse stock split is a corporate action in which a company combines a fixed number of existing shares into one new share, such as 1-for-10, raising the per-share price by the same factor. Total market value is unchanged at the moment of the split, but the share count shrinks.

How it works

Most reverse splits require shareholder approval, usually sought in a proxy statement that asks for authority to split within a range of ratios. The board then picks the final ratio and an effective date, announced by press release and often an 8-K. Fractional shares are typically cashed out. The stock usually trades under a new CUSIP after the split.

The most common reason is the exchange minimum bid price rule. On Nasdaq and the NYSE, a stock that closes below $1.00 for 30 consecutive business days receives a deficiency notice and generally has 180 calendar days to cure. A reverse split is the quickest fix. Nasdaq has tightened its rules for companies that split repeatedly, limiting or removing the cure period in some cases.

Why it matters for traders

Reverse splits carry a poor reputation, especially among small caps. They are frequently a precursor to a fresh equity raise, because a higher share price makes an offering easier to place. Many stocks drift lower after the split as the underlying problems remain. Traders watch for a reverse split announcement paired with an active shelf registration or ATM program. The share count reduction can also shrink the float sharply, which occasionally produces volatile spikes.

Example

A hypothetical biotech, Northwind Therapeutics (NWTX), trades at $0.40 with 200 million shares outstanding, an $80 million market cap. After a 1-for-20 reverse split it has 10 million shares at $8.00, still $80 million. Two weeks later it announces a $15 million registered direct offering.

FAQ

Is a reverse stock split bad for shareholders?

It does not change the value of a stake on its own, but it often signals financial strain and frequently precedes dilutive financing.

Why do companies do a reverse split?

Most often to lift the share price above $1.00 to keep an exchange listing, and sometimes to attract institutions that avoid low-priced stocks.