On 12 October 2026, Mexican media reported that the Mexican Stock Exchange (BMV) was processing a request to list Inversiones de Capitales INCA, S.A.B. de C.V., a new company being carved out of Grupo Financiero Inbursa, the financial group controlled by Carlos Slim’s family. INCA will hold stakes in non-financial companies that Inbursa wants outside its regulated business. It will reach the market without an IPO: no shares are sold and no money is raised. Inbursa’s shareholders simply receive INCA shares in proportion to what they already own.
That is why the case matters for families. A spin-off can turn part of a group into a separately listed company while ownership, and control, stay exactly where they were.
What a spin-off is
A spin-off is the split of one company into two, where the shareholders of the old company receive shares in the new one. The Mexican legal term is escisión. In an escisión parcial (partial spin-off), the original company carries on and hands a block of its assets, liabilities and capital to a newly created company.
How it differs from an IPO:
- Money. In an IPO, the company or its owners sell shares for cash. In a spin-off, nobody pays and nobody is paid.
- Owners. An IPO brings in new shareholders and dilutes the old ones. A spin-off starts with the same shareholders in the same proportions.
- Price. An IPO has an offer price agreed with investors. A spin-off has none, so the market sets the first price. According to Expansión, Inbursa says INCA’s opening price will come from market mechanisms, possibly through a spin-off auction.
The INCA numbers, as reported
Three outlets, Bloomberg Línea, El CEO and Expansión, cite the listing documents. Between them they report:
- Share capital of MXN 40 billion, represented by 2,016,202,312 shares of series O-1 (El CEO gives the exact count). Series O-2 is reserved for variable capital, and none has been issued.
- One INCA share for every three Inbursa shares, according to Bloomberg Línea. Inbursa had about 5.97 billion shares outstanding in late September 2026, so by our arithmetic the ratio roughly fits.
- About 760.1 million shares, or 37.7%, in public hands.
- Carlos Slim Helú and his family with the rest: about 62.3% in El CEO’s and Expansión’s figures. Bloomberg Línea gives 62.53% of the O-1 shares. Since every issued share is O-1, the gap is small but unexplained.
INCA’s stated purpose is to invest in Mexican and foreign companies across many sectors. Bloomberg Línea and El CEO both list the advertising agency Havas Media, the carmaker Giant Motors Latinoamérica, Salud Interactiva (medical assistance), Patia Biopharma and Naturgy (El CEO names Naturgy México, the gas distributor, which GBM analysts already counted among Inbursa’s private equity holdings in 2021). El CEO adds others, such as the petrochemical group Grupo Idesa. Neither outlet gives the size of each stake. As of 18 October 2026, we found no announced ticker or first trading date.
Why Inbursa would spin off INCA
Inbursa says the spin-off moves non-financial assets, which sit outside its regulated financial business, into a new economic group. A likely reason is capital: regulators make banks hold capital against risky assets, and stakes in private companies count among the riskiest.
The amounts are not small. In October 2023, S&P Global Ratings wrote, in a note published through the BMV, that the private equity arm Sinca Inbursa represented 5.9% of Banco Inbursa’s total assets and 17.5% of its common equity in 2022. S&P expected the spin-off to cut the bank’s capital by about MXN 23.9 billion without significantly weakening its capitalisation.
A plan five years in the making
On 25 January 2021, Inbursa told the BMV it intended to spin off part of the assets of two subsidiaries, Promotora Inbursa and Sinca Inbursa, worth about MXN 25 billion, into a new listed company, with one new share for each Inbursa share. Regulatory approvals then stalled, according to El CEO. S&P expected completion in 2024, which did not happen. Many of the companies now named for INCA appear in El CEO’s 2024 description of Sinca’s portfolio. The terms have changed since 2021: MXN 40 billion of capital instead of 25, and one share for three instead of one for one.
Slim’s groups have used the tool before. Sitios Latinoamérica, the towers company, was spun off from América Móvil and got its own family chairman, as we described in our post on how the Slims share power.
What a spin-off means for a controlling family
For a controlling family, a spin-off does three things. Control does not move: the family keeps the same proportion in both companies. The new company gets its own share price, its own board and its own access to capital. And the regulated business sheds assets that tie up its capital.
The trade-off: the market, not the family, decides what INCA is worth on day one. Listed holding companies often trade below the value of what they own, because investors discount for complexity and for the controlling shareholder’s power. More on such layers in our guide to holding structures.
A fair caveat
We could not open the BMV filing or an Inbursa release on the 2026 terms, so the figures above come from three Mexican outlets that cite the documents. They differ on details: the name (Expansión writes “Inversiones de Capital”, the other two “Inversiones de Capitales”), the family’s percentage, and the list of companies. The request still has to be accepted, and terms can change before the shares trade.
Five lessons to take away
- A listing does not have to mean a sale. A spin-off makes an asset public without selling a single share.
- Pro rata distribution keeps control where it is. Every shareholder, the family included, ends up with the same proportion in both companies.
- Keep regulated and unregulated assets apart. Equity stakes inside a bank tie up capital that the bank could use for its core business.
- Allow years, not months. Inbursa first announced the idea in 2021.
- Be ready for the market’s verdict. With no offer price, the first trades set the value, and holding companies often trade at a discount.
Questions to bring to your advisors
Do we hold assets inside a regulated or operating company that would be better owned separately? If we split a company, would the split be tax-neutral in our country, and which approvals would we need? Would separately listed shares help family members who want liquidity, or simply create a second company to govern? These are questions to bring to your advisors, not advice.
