Demerger

M&A is not only about combining; some of the most reliable value creation comes from separating. A conglomerate whose parts are worth more apart than together carries a conglomerate discount, and the corporate actions that close that gap are their own analytical specialty.

The taxonomy.

• Spin-off / demerger. The parent distributes shares of a subsidiary to its existing shareholders pro rata; you wake up owning two stocks instead of one, no cash changes hands, and (structured correctly) it is tax-neutral. "Demerger" is the Indian term; "spin-off" the American. This is the workhorse (GE split into GE Aerospace, GE HealthCare and GE Vernova over 2023–24; Reliance Industries demerged Jio Financial Services in 2023; Johnson & Johnson spun out Kenvue).
• Carve-out (equity carve-out / IPO). The parent sells a minority stake in a subsidiary to the public for cash, keeping control; a partial monetization that establishes a market price, often as a prelude to a full spin.
• Split-off. Parent shareholders exchange their parent shares for subsidiary shares (an election), used to shrink the parent's share count.
• Tracking stock. A separate class of parent equity that "tracks" a division's results without legal separation; largely out of fashion (the division still shares the parent's balance sheet and board, so the discount rarely closes).

Why separation creates value. (1) Pure-play re-rating. A high-growth division buried inside a low-multiple parent gets valued on its own (higher) multiple once standalone; the sum re-rates toward its parts. (2) Management focus and incentives. A dedicated board and equity-linked comp tied to that business. (3) Capital-allocation clarity. Each business funds itself and is judged on its own returns, ending the cross-subsidy that lets a weak division feed on a strong one. (4) Optionability. A clean standalone entity is far easier for an acquirer to buy than a division tangled inside a group.

How do sum-of-the-parts and the entitlement ratio work?

The sum-of-the-parts (SOTP) valuation. You value each segment on its own appropriate multiple (EV/EBITDA from that segment's peers), subtract each segment's net debt to get each segment's equity, subtract any central/holding-company net debt and unallocated costs, and compare the total to the current market capitalization. If SOTP equity materially exceeds the market cap, the market is applying a conglomerate discount that a separation could unlock (Worked example 6, practice problem 9). The stub is the complement: once a spin is announced, you can back out the value the market is putting on the remaining business by subtracting the when-issued price of the spin-co from the parent: stub per parent share = parent price − (spin-co when-issued price × entitlement ratio) (practice problem 14). A stub that implies the RemainCo is worth almost nothing is a classic special-situations setup.

The entitlement ratio. A demerger specifies how many spin-co shares you receive per parent share held: the share entitlement (or swap) ratio, fixed in the scheme (e.g., "1 share of DigitalCo for every 1 held," or "3 for every 5"). It is set so that the aggregate spin-co shares issued reflect the agreed value split, and it drives the per-share math everywhere (Worked example 6, practice problem 14).

How does a demerger work in India?

The Indian scheme of arrangement: the mechanics you must know. In India, mergers, demergers, and most capital reorganizations of companies happen through a court-supervised scheme of arrangement under Sections 230–232 of the Companies Act, 2013, adjudicated by the National Company Law Tribunal (NCLT). The sequence:

1. Board approval of the draft scheme and the share entitlement / swap ratio, supported by an independent valuation report (a registered valuer) and a fairness opinion from a merchant banker (see fairness opinions).
2. For listed companies, SEBI/stock-exchange approval of the scheme (via the exchanges, under the SEBI scheme circular and LODR), including a no-objection before it goes to the NCLT. SEBI polices schemes designed to bypass the listing/IPO route or to disadvantage minority holders.
3. NCLT convenes meetings of shareholders and creditors; the scheme must pass by a majority in number representing three-fourths (75%) in value of each class present and voting. Related parties are typically excluded from voting on matters where they are interested.
4. Sanction by the NCLT, filing of the order with the Registrar of Companies, and an appointed date (the accounting effective date, often retrospective) and a record date (which fixes who receives the new shares under the entitlement ratio).

You do not need to be a lawyer, but you must be able to read a scheme document, find the swap ratio and the record date, and judge whether the ratio is fair to the class of shareholders you represent, because in a promoter-controlled market, a scheme is one of the classic vehicles for moving value between the listed company and the promoter's other entities (the E11.04 governance case is built on exactly this risk).