Quantumsphere Shares Flat After Holiday Reopen With $300 Million SPAC Deal Ahead

May 26, 2026
Quantumsphere Shares Flat After Holiday Reopen With $300 Million SPAC Deal Ahead

New York, May 26, 2026, 12:03 EDT

  • Quantumsphere QUMS ordinary shares last quoted at $10.19. No trades showed on Robinhood for Tuesday.
  • QUMSU units last traded unchanged at $10.34. The Nasdaq climbed over 1% as tech stocks rallied.
  • The SPAC’s SACH deal, worth roughly $300 million, is still waiting on approvals and needs to clear the cash hurdle after redemptions.

Quantumsphere Acquisition Corp. shares did not trade by midday in the U.S. on Tuesday, with QUMS at $10.19 and showing zero volume. That left the blank-check name on the sidelines as the Nasdaq climbed. Robinhood lists its market cap at roughly $116.2 million and average daily volume a little above 2,000 shares.

Tech and chip stocks led early Tuesday after U.S. markets reopened from the Memorial Day break, with the Nasdaq Composite up 1.05% and the S&P 500 higher by 0.61% as of 11:22 a.m. ET, according to Reuters.

QUMSU units from Quantumsphere barely budged. The price was steady at $10.34, matching the last close, according to Investing.com. The day’s range held at $10.34 to $10.34.

That’s common for a lot of SPACs, or special purpose acquisition companies. These cash shells collect funds before finding an operating company to merge with. The shares usually stick near the cash in trust, at least until investors get more on the merger’s terms, the redemption rate, and financials of the target.

Quantumsphere isn’t a quantum computing operator. The company, based in the Cayman Islands, is a blank-check firm. Its securities—QUMSU units, QUMS ordinary shares, and QUMSR rights—trade on Nasdaq, according to a March filing.

SACH Pte. Ltd., a Singapore-based firm with businesses in gaming, tech, e-commerce, retail and live events, is set to merge with another company in a deal still waiting to close. Back in October, they said the merged entity would list on Nasdaq with an implied initial pro forma equity value near $300 million if there are no redemptions.

SACH CEO Jonathan Zhang said the merger is a “transformative milestone.” Quantumsphere Chairman and CEO Ping Zhang called it a deal that connects the SPAC to an “operator that can execute.”

Trust account economics are still front and center. Quantumsphere put up 8.28 million units at $10 apiece in the August 2025 IPO, raising $82.8 million in gross proceeds. According to an SEC filing, the whole $82.8 million went into the trust for public shareholders.

Redemptions are the risk here — SPAC holders can pull money if they don’t want in. Quantumsphere said the SACH business combination still needs shareholder and regulatory signoff, the usual closing steps, and a minimum cash level after redemptions. If they don’t wrap up the merger by July 31, 2026, the deal can be called off.

Little peer read-through seen Tuesday. Broader trading was led by chips and AI, not small SPACs. Quantumsphere stock didn’t follow the Nasdaq higher. Investors stuck to a wait-for-filings setup, eyeing the next proxy or S-1 instead of jumping into the rally.

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