Reliance Jio filed its draft red herring prospectus this week, setting the machinery in motion for what will be India's largest-ever initial public offering. The telecom and digital services arm—valued at roughly $112 billion in private secondary rounds—now enters the public disclosure regime, where balance sheets, revenue mix, and margin trajectories become visible line by line. Reliance Industries shares traded up 2.1% the session after filing, a muted move that underestimates the second-order lift coming when institutional allocators complete their sum-of-the-parts models.

Jio controls 490 million wireless subscribers, more than 60% of India's 5G infrastructure, and the country's fastest-growing fiber-to-the-home network. The DRHP filing means SEBI review begins immediately, typically a 90-to-120-day window before final prospectus and roadshow. Anchor bidding follows within two weeks of prospectus approval, and retail allotment closes three days after that. The issuer is expected to raise between $8 billion and $10 billion in the base offering, with a greenshoe that could add another $2 billion. Goldman Sachs, Morgan Stanley, and Kotak Mahindra are named as book-runners, and the preliminary pricing band suggests a 15-to-18-times enterprise-value-to-EBITDA multiple, in line with Bharti Airtel's current trading level but above China Mobile's 11-times comp.

The filing crystallizes what was previously a directional bet into a hard catalyst chain. First, every India-focused fund must now produce a tearsheet on Jio standalone, which raises the visibility floor for Reliance Industries' other divisions—petrochemicals, refining, retail. Second, parent liquidity improves: Reliance holds 66.33% post-IPO under the disclosed structure, meaning $37 billion in marked-to-market equity that can be pledged, sold down in secondary blocks, or used as acquisition currency without diluting the Ambani family's control threshold. Third, the DRHP's risk-factor section will list spectrum renewal obligations, capex cadence, and regulatory dependencies in granular detail, removing the opacity discount that has kept Reliance's consolidated multiple 2.4 turns below Bharti's on a look-through basis.

Allocators should mark mid-September as the likely anchor-book deadline, assuming SEBI raises no material objections during the standard comment period. Watch for amendments to the DRHP in the 60-to-75-day window, particularly around related-party transaction disclosures and any adjustments to the use-of-proceeds section. The greenshoe exercise, if triggered, will happen 30 days post-listing, and that secondary supply will determine whether the float trades tight or develops a basis for arb desks. Retail oversubscription multiples in India's last three mega-IPOs averaged 68 times, so expect the Jio book to close heavily oversubscribed and price at the top of the range.

Reliance Industries now trades at $217 billion enterprise value, which implies Jio alone represents 51.6% of the parent on a private-market basis but only 38% on a public look-through after applying the post-IPO float discount. That 13.6-percentage-point gap closes the day anchor allocation is announced.