Something unusual is happening in the derivatives corner of the crypto market: a flash-memory chipmaker has become the hottest name in perpetual futures trading. Sandisk stock perpetuals have pulled ahead of every other equity-linked contract tracked across crypto exchanges, with open interest hitting $1.73 billion as of August 17, according to data shared by WuBlockchain and corroborated by crypto.news. That makes SNDK, not a meme coin or a Bitcoin proxy, the single largest stock perpetual in the entire crypto derivatives space.
Summary
Key takeaways
- Open interest in Sandisk (SNDK) stock perpetuals reached $1.73 billion as of August 17, the highest among all stock perpetuals tracked in crypto markets.
- At that snapshot, SNDK’s open interest was roughly 1.86 times SPCX’s $928 million and 3.51 times SKHX’s $493 million, though crypto.news later reported SKHX had climbed to about $1.35 billion, narrowing the gap.
- Twenty-four-hour SNDK perpetual trading volume reached $2.51 billion, up 248% and nearly eight times Micron’s comparable $320 million.
- Susquehanna (SIG) and IMC are SNDK options on Cboe Options and EDGX Options have designated primary market makers for each platform, respectively, while Citadel Securities leads market making for options on the SNDU ETF.
- Jane Street disclosed beneficial ownership of 7.4094 million Sandisk shares — a 5.0% stake — in a Schedule 13G filed August 5.
Record Open Interest Puts SNDK at the Top of Stock Perpetuals
SNDK’s $1.73 billion open interest figure isn’t just a big number — it’s the largest position size ever recorded for a single stock perpetual on crypto trading venues. That status alone signals a shift in how traders are treating semiconductor and memory-chip exposure: instead of buying shares through a brokerage, a growing pool of capital is betting on Sandisk’s price through stock perpetual open interest built entirely on crypto infrastructure.
Comparison With Other Stock Perpetuals
According to WuBlockchain’s August 17 snapshot, SNDK’s open interest ran approximately 1.86 times SPCX’s $928 million and 3.51 times SKHX’s $493 million, cementing its lead over both the SpaceX-linked and SK Hynix-linked contracts. That gap didn’t hold for long. Crypto.news later reported that, across 32 tracked venues via Loris Tools data, SKHX’s open interest had climbed to roughly $1.35 billion and SPCX to about $967.7 million — narrowing SNDK’s advantage to closer to 1.3 times SKHX and 1.8 times SPCX. Even with that compression, SNDK stayed on top, underscoring how fast leveraged positioning can move in this corner of the market.
Trading Volume Outpaces Storage-Sector Peers
Open interest tells only part of the story. Twenty-four-hour trading volume in SNDK perpetuals reportedly reached $2.51 billion — a 248% jump from the prior 24-hour window and enough to rank fourth among all perpetual contracts tracked by Loris, trailing only Bitcoin, Ethereum, and Solana. Micron-linked perpetuals, by comparison, generated about $320 million in the same window, meaning SNDK volume outpaced its closest storage-sector rival by nearly eightfold. SNDK’s trading volume also exceeds that of most other names in the storage sector, including Micron (MU), reinforcing just how concentrated trader attention has become around this single ticker.
This isn’t happening in isolation. The aggregate open interest for perpetuals based on stocks, commodities, and comparable traditional assets surpassed $2 billion by July, up from a range of roughly $350 million to $500 million during the spring — a trend that shows crypto exchanges steadily building out around-the-clock derivatives markets tied to real-world assets.
Market Makers Bridge Traditional Options and Crypto Derivatives
Behind the surge in SNDK perpetual activity sits a familiar cast of Wall Street liquidity providers, several of which are also active participants in digital asset trading. Cboe’s symbol directories list Susquehanna (SIG) as the designated primary market maker for SNDK options on Cboe Options, while IMC holds that role on EDGX Options. These assignments establish who provides liquidity on the listed-options side of Sandisk shares — they don’t necessarily mean either firm is directly making markets in the crypto perpetual contracts themselves, but their presence highlights how tightly traditional options infrastructure and crypto derivatives now sit side by side.
A related thread runs through the T-REX 2X Long SNDK Daily Target ETF, known by its ticker SNDU. MIAX documentation shows Citadel Securities was appointed primary lead market maker when options on that leveraged ETF launched, adding yet another major electronic trading firm to the web of participants circling Sandisk-linked products.
Why this matters: when the same firms that dominate traditional equity options liquidity also show up around crypto-adjacent instruments tied to the same stock, it signals that the line between conventional derivatives markets and crypto perpetuals is getting thinner. That convergence matters for anyone trying to gauge how much of this activity reflects genuine crypto-native demand versus spillover from institutional options desks.
Jane Street’s Institutional Stake in Sandisk
Ownership records add another layer to the picture. A Schedule 13G filed by Jane Street on August 5 shows that, as of July 30, the firm beneficially owned 7.4094 million Sandisk shares — exactly a 5.0% stake in the company. Jane Street is one of the largest electronic market makers in the world and was also an early mover among traditional financial institutions moving into digital asset trading, which makes its presence on Sandisk’s shareholder rolls notable beyond a simple passive-investment footnote.
The size of the stake places Jane Street squarely among Sandisk’s disclosed institutional holders at a moment when interest in the stock — and in derivatives tied to it — is climbing on multiple fronts simultaneously. That overlap between a major market-making firm holding a meaningful equity position and the parallel explosion in stock perpetual open interest is exactly the kind of signal that tends to draw scrutiny from traders trying to read where liquidity and conviction are actually coming from.
What’s Driving the Underlying Stock
The derivatives surge didn’t happen in a vacuum. Sandisk shares closed the August 14 U.S. session at $1,641.11, up 7.37% on the day, with roughly 21 million shares changing hands — a move that came just before the latest jump in crypto perpetual activity. There’s no confirmed link tying any single announcement directly to the rise in perpetual open interest, but the timing lines up with a string of corporate updates.
Sandisk reported fiscal fourth-quarter revenue of $8.97 billion, up 51% sequentially, alongside GAAP net income of $6.90 billion. Full fiscal-year revenue reached $20.25 billion, and the board expanded its share repurchase authorization by another $14 billion. At an August 13 investor day, the company said eight new business model agreements now cover roughly half of expected fiscal 2027 bit volumes and about two-thirds of fiscal 2028 volumes, while management projected mid-to-high-teens revenue growth from fiscal 2028 through 2030 and said it expects to return 100% of excess cash to shareholders after reinvesting in the business. Those are company targets rather than guaranteed outcomes, but they help explain why traders piled into both the stock and its derivatives at the same time.
It’s worth remembering what these contracts actually are: synthetic price exposure, not equity. SNDK stock perpetuals don’t carry voting rights, dividends, or ownership in Sandisk itself — they simply track the stock’s price through a derivatives structure built on crypto exchange rails. As daily perpetual volume in SNDK climbs into the billions, that distinction becomes more important, not less, for anyone trying to separate genuine corporate momentum from leveraged speculation riding alongside it.
FAQ
What is the significance of Sandisk’s open interest reaching $1.73 billion?
It represents the highest open interest among all stock perpetuals, making SNDK the largest stock perpetual in the crypto market by this measure as of the August 17 snapshot, even as rivals like SKHX later narrowed the gap.
Who are the main market makers facilitating trading in SNDK options?
Susquehanna (SIG) and IMC are primary market makers on Cboe Options and EDGX Options respectively, while Citadel Securities is the lead market maker for options on the related SNDU ETF, which tracks a leveraged daily exposure to SNDK.
What is Jane Street’s involvement with Sandisk?
Jane Street beneficially owns 7.4094 million Sandisk shares, a 5.0% stake disclosed in an August 5 Schedule 13G, and is a major electronic market maker active in both traditional equities and digital asset markets.
Article produced with the assistance of artificial intelligence and reviewed by the editorial team.
