SoftBank Pledged 72% of Arm for a $25 Billion Loan. Everyone Else Holds the Risk

Arm's public float is 145 million shares. SoftBank pledged 769 million of them to back a $25 billion loan, and the margin trigger is nowhere in the filings.

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Vincent JiangVincent Jiang · 3 min read
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Masayoshi Son speaking on stage
1 / 6Slide 1 of 6
SoftBank Group founder and chief executive Masayoshi Son

A stock that now has two jobs

Arm fell 7.88% to $306.34 on 24 September while the Nasdaq closed flat, then dropped another 8.7% to $283.33 on 28 September, roughly three times the fall in the semiconductor fund, with no announcement of its own 15. The extra weight sits outside the royalty business: SoftBank first pledged Arm shares as loan collateral in 2023, and this month that job got bigger, at a $25 billion facility 3.

The loan tripled in three years

SoftBank signed the facility's third upsize this month: $8.5 billion in 2023, $13.5 billion in 2024, $20 billion in 2025, now $25 billion 3. As of May, 769 million Arm shares, a 72% stake, secured it; $20 billion was drawn as of December 2025, and the loan matures in September 2027 3. Lenders offered about $7 billion of demand against the $3 billion to $5 billion increase SoftBank sought 3. The cash has a destination: SoftBank's OpenAI commitment runs near $65 billion 3.

SoftBank's Arm-backed loan has tripled since 2023

$0B$10B$20B$30B202320242025Sep 2026Third upsize: lenders offered $7B,SoftBank sought $3B-$5B
Data
Loan capacity
2023$8.5B
2024$13.5B
2025$20B
Sep 2026$25B
Committed capacity of the SoftBank margin facility secured by Arm shares, in billions of US dollars, at each upsize. The September 2026 figure is committed capacity, not the drawn balance, which stood at $20 billion as of December 2025. Source: Bloomberg via Yahoo Finance, 18 September 2026.3

The loop, in Arm's own filing

Arm's Form 20-F, filed in May, warns the facility can require prepayment if the share price declines "below certain thresholds," and that a SoftBank subsidiary "may decide to sell some of the pledged shares" 4. The trigger level is disclosed nowhere: no public filing names the price that turns a decline into a margin call, so no outside holder can compute where the cliff sits 4.

The float outside SoftBank's 86.4% stake is roughly 145 million shares, against 769 million pledged 4. SoftBank also bought about $193 million of Arm licensing last quarter 4. Owner, borrower and top customer, all riding on one price.

Most of Arm's equity is pledged as loan collateral

  • Pledged by SoftBank72%72%
  • Unpledged SoftBank stake14.4%14.4%
  • Public float13.6%13.6%
Data
SliceValueShare
Pledged by SoftBank72%72%
Unpledged SoftBank stake14.4%14.4%
Public float13.6%13.6%
Breakdown of Arm Holdings plc shares based on SoftBank's 86.4% ownership and the 769 million shares (72% stake) pledged as loan collateral. Sources: Arm Form 20-F and Bloomberg.3,4

A vote decided before it was held

On 9 September, shareholders approved the policy that can pay CEO Rene Haas up to $800 million if Arm reaches a $2 trillion valuation by March 2031 68. ISS and Glass Lewis had urged rejection, Glass Lewis calling the payout excessive; ISS also asked voters to remove Haas and Masayoshi Son from the board 6.

The tally ran 939.3 million for and 36.4 million against, a protest equal to about a quarter of the free float; Son's re-election drew 22.8 million against 7. The meeting was chaired by the proxy for SVF Holdco (UK) Limited, SoftBank's Arm vehicle 7, and with SoftBank at 86.4% of the shares 4, the outcome was fixed before anyone sat down.

Arm CEO Rene Haas interviewed by Liz Claman at SXSW in March 2025
Arm CEO Rene Haas at SXSW in March 2025 · Rosiestep

The business is not the problem

The day the bigger loan surfaced, Arm filed its annual report: fiscal 2026 revenue of $4.92 billion, up from $4.01 billion, and $960 million of pre-tax profit 2. The June quarter grew 22% to a record $1.29 billion 1. But at roughly 312 times trailing earnings, against peers near 67 times forward, the price carries no cushion, and no peer carries a margin call on its own register 15.

4 November prices the parent, or the chips

The fiscal Q2 report, due 4 November, is guided to about $1.38 billion of revenue with royalty growth in the low teens 1. The Inference's 22 September piece found the rally pricing a $2 billion AGI CPU pipeline against $1 billion of committed supply 1. If a royalty beat still sells off, the market is no longer pricing the chip designer; it is pricing the collateral.

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