SoftBank announces it will sell up to 198M shares of T-Mobile stock worth ~$21B, representing 65% of its stake in T-Mobile
Lauren Feiner / CNBC :
Context & Ripple Effects
This sale closes a loop SoftBank opened when it pushed its Sprint stake past 80% in 2015 and then folded the carrier into T-Mobile — a position topped up in 2023 when T-Mobile was directed to issue it another 48.75M shares. Selling 65% of that stake converts SoftBank's largest legacy telecom holding into roughly $21B of deployable cash.
It is also the third big wireless monetization of 2020 alone: SoftBank had already sold down 5% of its Japanese wireless unit in May and followed with a larger $10.4B domestic offering in September. The later Nvidia exit and partial T-Mobile sale in 2025 show the same playbook running years on.
First-order effects
- T-Mobile's free float expands by up to 198M shares overnight, while SoftBank retains only about a third of its position — its influence over the merged carrier drops accordingly.
- SoftBank books roughly $21B from a single block trade, directly shoring up a balance sheet under pressure from portfolio losses.
Second-order effects
- The proceeds feed the machine SoftBank's board had already greenlit ahead of the merger — the $40B commitment to its second tech fund — letting Masayoshi Son recycle carrier equity into startup bets.
- A stock trading near a 50% discount to net asset value gives Tokyo investors a concrete catalyst: realized cash gains like this one are the main lever closing that gap, which is why the shares rallied.
Third-order effects
- If the pattern holds — Sprint stake, Japanese wireless, then T-Mobile itself — SoftBank structurally stops being a telecom operator and becomes a pure investment vehicle that mines its operating holdings to fund venture risk.
- For carriers generally, large strategic shareholders become liquidity events rather than permanent anchors, reshaping who holds telecom equity over time.
The trend: SoftBank is methodically liquidating the carrier stakes accumulated through Sprint and its Japanese wireless business to convert telecom equity into venture-investing firepower.