# Spin-off > A corporate action in which a company separates a business unit into a new, independently traded company and distributes its shares to existing holders. Source: https://www.quantisnow.com/glossary/spin-off Topic: Glossary / Corporate actions Also known as: spinoff, corporate spin-off Last updated: 2026-10-27 A spin-off is a corporate action in which a parent company separates a subsidiary or division into a standalone public company and distributes the new company's shares to the parent's existing shareholders, usually pro rata. Shareholders end up owning both companies. ## How it works The parent announces the plan, often months ahead, and the new company files a registration statement (commonly a Form 10) describing its business, financials and management. The board sets a distribution ratio (for example, one share of SpinCo for every three parent shares), a [record date](https://www.quantisnow.com/glossary/record-date) and a distribution date. Before the distribution, both stocks may trade on a "when-issued" basis, and the parent may trade "regular way" (with the right to receive SpinCo shares) and "ex-distribution" (without it). Many spin-offs are structured to be tax-free to shareholders under Section 355 of the Internal Revenue Code. A split-off is a variant where holders choose to exchange parent shares for SpinCo shares, and a carve-out sells part of the subsidiary in an IPO instead of distributing it. ## Why it matters for traders Spin-offs often create forced selling. Index funds and institutions that cannot hold the smaller company, or do not want it, sell in the first weeks after distribution. That pressure can depress the new stock early. Parent stocks sometimes rerate once a lower-growth or higher-growth segment is separated. Watch the Form 10 for debt allocated to SpinCo, management incentives and separation costs. ## Example Hypothetical industrial Northwind Holdings (NWHD) trades at $60 and spins off its medical unit, Northwind Health (NWHL), at a ratio of one NWHL share per four NWHD shares. A holder of 400 NWHD shares receives 100 NWHL shares. If NWHL opens at $40 and NWHD trades down to $50, the holder has 400 x $50 + 100 x $40 = $24,000, the same as the $24,000 before. ## FAQ ### Do I need to do anything to receive spin-off shares? No. If you own the parent on the record date and hold through the distribution, your broker credits the new shares automatically. ### Are spin-offs taxable? Many are structured to be tax-free under Section 355, but not all. The company's information statement will say how the distribution is treated. ## Related terms - [Record date](https://www.quantisnow.com/glossary/record-date.md): The date a company uses to determine which shareholders are entitled to a dividend or other distribution, or to vote at a meeting. - [Form 8-K](https://www.quantisnow.com/glossary/form-8-k.md): The SEC "current report" a public company files to disclose material events, generally within four business days of the event. - [Shares outstanding](https://www.quantisnow.com/glossary/shares-outstanding.md): The total number of a company's shares currently held by all shareholders, including insiders and institutions, excluding treasury shares. - [Institutional ownership](https://www.quantisnow.com/glossary/institutional-ownership.md): The share of a company's stock held by institutions such as mutual funds, pensions, hedge funds and banks, usually estimated from 13F filings. - [Ticker change](https://www.quantisnow.com/glossary/ticker-change.md): A change to the symbol under which a company's stock trades, usually tied to a rebrand, merger, exchange move or corporate restructuring. ## On Quantisnow - [Stock splits and corporate actions](https://www.quantisnow.com/guides/stock-splits-and-corporate-actions) - [Corporate actions: splits and ticker changes](https://www.quantisnow.com/corporate-actions) - [SEC Form 8-K filings](https://www.quantisnow.com/categories/8-k) - [Live feed: SEC Filings](https://www.quantisnow.com/news/sec)