What to look at in a separation
A spin-off announcement is a thin document; the Form 10 that follows it runs to hundreds of pages. These are the features that most change how a separation reads, where in the filings each one is stated, and which of the 88 deals tracked here show them. This is a guide to reading the documents — it makes no judgement about any company as an investment.
How much of it was actually handed out
A parent does not always distribute the whole company. It may keep a stake and sell it down later, which means the shares in public hands are fewer than the shares outstanding — so float, market value and any per-share figure computed from the wrong count are all wrong together. The information statement says what proportion is being distributed; the completing 8-K says what actually was.
21 of the deals here record a retained stake, and the range is wide. FAT Brands kept about 94% of Twin Hospitality, distributing roughly a twentieth of it. Fidelity National Financial kept about 85% of F&G Annuities. At the other end, International Paper kept 19.9% of Sylvamo and sold it down afterwards.
What the spin-off was made to carry
Separations are frequently financed by the departing company borrowing and paying the proceeds to its parent. The debt lands on the spin-off; the cash stays behind. A business that looks lightly geared inside a parent's segment reporting can arrive public carrying a great deal. The Form 10 sets out the financing arrangements, and the 8-Ks filed in the fortnight before distribution usually record the notes and credit facilities as they are signed.
Embecta left BD with roughly 1.65 billion dollars of borrowings against about 57 million shares. DT Midstream raised more than three billion and paid its parent a special dividend before separating.
Size relative to the parent
A small company leaving a very large one is the classic case in the literature, on the theory that institutional holders cannot keep the smaller stock and sell it regardless of price. Shares outstanding at separation are stated in the information statement, and 55 deals here record it; combined with the first regular-way close it gives the company's value on day one.
Worth knowing before leaning on the theory: the forced-selling and index effects behind it are reported to have weakened, and this site's own figures show no meaningful difference between the smallest and largest separations it tracks. See the research page.
Whether it is leaving the parent's industry
The research associates stronger outcomes with focus-increasing separations, where the departing business is in a different industry from the one it leaves. The idea is easy to state and hard to apply, because the industry codes companies file under are frequently inherited: a parent often still reports the code of the business it just spun off. Each deal here carries a classification, and where the codes and the businesses disagree it is left explicitly unjudged rather than resolved by guessing.
Whether it is a spin-off at all yet
Companies announce that they intend to separate long before they commit to how. The same announcement can end as a distribution to shareholders, a sale, a public offering, or nothing. 7 deals in the calendar are marked structure undecided for that reason, and one — Warner Bros. Discovery — was abandoned outright and moved to the archive rather than deleted.
The first price is often not the real one
Before a separation completes there is usually a when-issued market: thin trading in shares that do not exist yet, which stops the moment the real market opens. Prices from that window can be far from where the shares settle, and they sit in most price histories with nothing to mark them. This is the single most common way a spin-off's early performance gets miscalculated, and how this site handles it is set out on the methodology page.
What the data will get wrong about it
A separation breaks the assumptions financial data is built on, and it does so quietly: tickers move between companies, historical figures describe a business that has left, and share counts go stale. 80 of the deals here carry a specific documented trap, collected on the About page.
Everything above describes what the filings say and where to find it. Nothing here is a recommendation, and no deal on this site is presented as more or less worth owning than any other.