How to Trade SoftBank Group Corp. (SOFTBANK) on Hyperliquid

What Is SoftBank Group

SoftBank Group Corp. (9984.T) is a Japanese investment holding company founded in 1981 by Masayoshi Son. It started as a software distribution business and evolved into one of the largest technology investors on the planet. The company's net asset value stood at roughly ¥30.9 trillion (about $205 billion) as of December 2025, with a loan-to-value ratio of 20.6%.

The portfolio is concentrated in a few massive bets. Arm Holdings, the semiconductor IP company that licenses chip architectures to nearly every smartphone maker, is SoftBank's crown jewel — the group holds approximately 90% of Arm's shares, worth about ¥12.7 trillion. The SoftBank Vision Funds hold over 300 investments spanning AI, fintech, and enterprise software. The group also retains meaningful positions in its domestic telecom subsidiary SoftBank Corp. (SBKK), T-Mobile, and a portfolio of Latin American tech companies.

In January 2026, SoftBank executed a 4-for-1 stock split after shares had nearly quadrupled from the April 2025 low of ¥5,835 to above ¥22,000. The split reduced the minimum trading unit cost, broadening retail access on the Tokyo exchange. Post-split, shares trade around ¥4,400 — or roughly $31 at current USD/JPY rates, which is the price the Hyperliquid oracle reflects.

Why SOFTBANK Matters Right Now

SoftBank's current narrative is dominated by one thing: a colossal bet on OpenAI. The company has committed a cumulative $64.6 billion to OpenAI through Vision Fund 2, representing approximately 13% ownership. The latest $30 billion tranche — part of OpenAI's $110 billion mega-round that also included Amazon and Nvidia — is being deployed in three $10 billion installments through April, July, and October 2026.

This concentration has consequences. S&P Global revised SoftBank's credit outlook to negative in March 2026, warning that the additional deployment would push unlisted assets above 50% of the portfolio (up from 42% in December), impairing liquidity. S&P affirmed the BB+ rating but flagged OpenAI as having the "weakest credit quality" among SoftBank's holdings. The preferred shares convert to common equity upon an OpenAI IPO — making the timing and terms of any listing a key catalyst.

Meanwhile, SoftBank's portfolio is producing tangible exits. PayPay, the dominant Japanese digital payments app, raised $879.8 million in a Nasdaq IPO on March 12, 2026 — the largest US listing by a Japanese company in a decade. Shares debuted at $16 and closed up 14% at $18.16, valuing PayPay at $12.1 billion. These kinds of liquidity events partially offset the cash drain from the OpenAI commitment.

The Vision Fund itself booked a $4.2 billion gain on its OpenAI position in the fiscal third quarter ending December 2025, though this was partly offset by declines in Coupang and Didi holdings. For traders, SoftBank is effectively a leveraged bet on the AI cycle — primarily through Arm's chip licensing monopoly and the OpenAI stake — wrapped in the volatility of Masayoshi Son's conviction-driven capital allocation.

The HIP-3 Perpetual Contract

The SOFTBANK perpetual on Hyperliquid is a HIP-3 contract that tracks the USD value of one share of SoftBank Group Corp. (9984.T). An oracle converts the underlying JPY-denominated stock price to USD using the live USD/JPY exchange rate, so the perp price moves with both SoftBank's share price on the TSE and currency fluctuations.

This dual exposure is important to understand. If SoftBank shares rise 2% in yen terms but the yen weakens 1% against the dollar, your USD-denominated return is roughly 1%. Conversely, yen strength amplifies gains. Traders who want pure equity exposure need to think about whether to hedge the FX leg separately.

The contract offers up to 10x leverage. Tokyo Stock Exchange hours (9:00–15:00 JST, with a lunch break) drive most of the underlying price discovery, but the perp trades 24/7 on Hyperliquid. Outside TSE hours, the oracle references the last traded price, which means overnight moves in related assets (Arm's Nasdaq-listed shares, broader US tech sentiment, USD/JPY in the FX market) can create dislocations between the perp price and where 9984.T will open the next morning. This is both a risk and an opportunity for traders comfortable with cross-market arbitrage.

Key Trading Considerations

Concentration risk. SoftBank is not a diversified conglomerate in the traditional sense. The top three holdings — Arm, OpenAI, and SBKK — represent the vast majority of NAV. Arm alone is worth about a third of the equity portfolio. A sharp selloff in Arm shares (which dropped nearly 20% in December 2025) feeds directly through to SoftBank's stock price.

Leverage on leverage. SoftBank itself operates with significant debt (net debt of ¥8.05 trillion as of December 2025). Taking a leveraged long position on a leveraged holding company is compounding your exposure to downside moves. The BB+ credit rating with negative outlook means refinancing risk is a real consideration if AI sentiment sours.

Catalyst calendar. Key dates to watch include the three OpenAI tranche deployments (April, July, October 2026), any signals around an OpenAI IPO timeline, Arm's quarterly earnings, and SoftBank's own earnings reports. The PayPay dual-listing decision (Tokyo exchange) is also pending.

FX sensitivity. The SOFTBANK perp is a two-asset trade: SoftBank equity plus USD/JPY. BOJ policy decisions, US rate moves, and carry trade dynamics all affect your P&L independently of SoftBank's fundamentals. If you're taking a directional view on SoftBank the company, consider whether you also have a view on the yen.

Liquidity. This is a newer HIP-3 listing with limited volume history. Wider spreads and thinner books are likely, especially during off-hours for the Tokyo market. Size positions accordingly and use limit orders rather than market orders to manage slippage.

Trading on Hyperliquid

Trade SOFTBANK on Hyperliquid with up to 10x leverage.