Quantumsphere Acquisition (QUMSU) Stock Analysis & Price (Updated Oct 15, 2026, 4:00 PM ET)
Updated Oct 15, 2026, 4:00 PM ET
- Closed at $10.30, +0.00% vs the prior close of $10.30.
- No new SEC filings since the prior session.
- No new insider buys or sales reported since the prior session.
QUMSU ends flat (+0.0%) to $10.30, 20 down days in a row. Closed at $10.30, +0.00% vs the prior close of $10.30. Day range $10.30–$10.30, opened at $10.30.
QUMSU daily analysis — what happened
A plain-English, data-only note written after every US trading day. Newest first; older days stay archived below.
Oct 15, 2026 — QUMSU ends flat (+0.0%) to $10.30, 20 down days in a row
- Closed at $10.30, +0.00% vs the prior close of $10.30. Day range $10.30–$10.30, opened at $10.30.
- Price is -0.5% vs its 50-day average ($10.35) and -0.1% vs its 200-day average ($10.31).
- 52-week range $10.10–$10.99; today's close sits at 22% of that range, 6.3% below the 52-week high.
- That makes 20 straight losses.
Oct 14, 2026 — QUMSU dips 0.8% to $10.30, a 6-month low on 2.6x normal volume
- Closed at $10.30, -0.77% vs the prior close of $10.38. Day range $10.30–$10.30, opened at $10.30.
- Volume was 200 shares, 2.6x its 50-day average of 76 — unusually heavy trading.
- Price is -0.5% vs its 50-day average ($10.35) and -0.1% vs its 200-day average ($10.31).
- 52-week range $10.10–$10.99; today's close sits at 22% of that range, 6.3% below the 52-week high.
- That makes 20 straight losses.
Oct 13, 2026 — QUMSU ends flat (+0.0%) to $10.38, 20 down days in a row
- Closed at $10.38, +0.00% vs the prior close of $10.38. Day range $10.38–$10.38, opened at $10.38.
- Price is +0.3% vs its 50-day average ($10.35) and +0.7% vs its 200-day average ($10.31).
- 52-week range $10.10–$10.99; today's close sits at 31% of that range, 5.6% below the 52-week high.
- That makes 20 straight losses.
- SEC filings that day: 8-K.
Oct 12, 2026 — QUMSU ends flat (+0.0%) to $10.38, 20 down days in a row
- Closed at $10.38, +0.00% vs the prior close of $10.38. Day range $10.38–$10.38, opened at $10.38.
- Price is +0.3% vs its 50-day average ($10.35) and +0.7% vs its 200-day average ($10.31).
- 52-week range $10.10–$10.99; today's close sits at 31% of that range, 5.6% below the 52-week high.
- That makes 20 straight losses.
Oct 9, 2026 — QUMSU ends flat (+0.0%) to $10.38, 20 down days in a row
- Closed at $10.38, +0.00% vs the prior close of $10.38. Day range $10.38–$10.38, opened at $10.38.
- Price is +0.3% vs its 50-day average ($10.35) and +0.7% vs its 200-day average ($10.31).
- 52-week range $10.10–$10.99; today's close sits at 31% of that range, 5.6% below the 52-week high.
- That makes 20 straight losses.
Oct 8, 2026 — QUMSU ends flat (+0.0%) to $10.38, 20 down days in a row
- Closed at $10.38, +0.00% vs the prior close of $10.38. Day range $10.38–$10.38, opened at $10.38.
- Price is +0.3% vs its 50-day average ($10.35) and +0.7% vs its 200-day average ($10.31).
- 52-week range $10.10–$10.99; today's close sits at 31% of that range, 5.6% below the 52-week high.
- That makes 20 straight losses.
Oct 7, 2026 — QUMSU ends flat (+0.0%) to $10.38, 19 down days in a row
- Closed at $10.38, +0.00% vs the prior close of $10.38. Day range $10.38–$10.38, opened at $10.38.
- Price is +0.3% vs its 50-day average ($10.35) and +0.7% vs its 200-day average ($10.31).
- 52-week range $10.10–$10.99; today's close sits at 31% of that range, 5.6% below the 52-week high.
- That makes 19 straight losses.
Oct 6, 2026 — QUMSU ends flat (+0.0%) to $10.38, 18 down days in a row
- Closed at $10.38, +0.00% vs the prior close of $10.38. Day range $10.38–$10.38, opened at $10.38.
- Price is +0.3% vs its 50-day average ($10.35) and +0.7% vs its 200-day average ($10.31).
- 52-week range $10.09–$10.99; today's close sits at 32% of that range, 5.6% below the 52-week high.
- That makes 18 straight losses.
Oct 5, 2026 — QUMSU ends flat (+0.0%) to $10.38, 17 down days in a row
- Closed at $10.38, +0.00% vs the prior close of $10.38. Day range $10.38–$10.38, opened at $10.38.
- Price is +0.3% vs its 50-day average ($10.35) and +0.7% vs its 200-day average ($10.31).
- 52-week range $10.09–$10.99; today's close sits at 32% of that range, 5.6% below the 52-week high.
- That makes 17 straight losses.
Oct 2, 2026 — QUMSU ends flat (+0.0%) to $10.38, 16 down days in a row
- Closed at $10.38, +0.00% vs the prior close of $10.38. Day range $10.38–$10.38, opened at $10.38.
- Price is +0.3% vs its 50-day average ($10.35) and +0.7% vs its 200-day average ($10.31).
- 52-week range $10.09–$10.99; today's close sits at 32% of that range, 5.6% below the 52-week high.
- That makes 16 straight losses.
QUMSU latest news & SEC filings
Every SEC filing by or about QUMSU in the last 120 days, explained in plain English. Updated daily, with a same-day refresh for new filings.
Oct 13, 2026 · Form 8-K — Major event / current report
Current report — a filing companies must make within 4 business days of a major event
- Item 1.01 — Signed a material agreement.
- Item 7.01 — Released information under Regulation FD (e.g. a presentation or press release).
Oct 6, 2026 · Form SCHEDULE 13G/A — Update to a passive 5%+ stake (13G)
Update to a passive 5%+ stake (13G)
Filed by an outside investor (not the company). It reports a holding of more than 5% of a share class; percentage and holder name are in the filing.
Sep 2, 2026 · Form 8-K — Major event / current report
Current report — a filing companies must make within 4 business days of a major event
- Item 1.02 — Ended a material agreement.
Aug 14, 2026 · Form 10-Q — Quarterly report
Quarterly report (unaudited financial statements for the quarter)
Quarter ended Jun 30, 2026:
- Net income: $574.01K (prior year -$15.55K) (swung to profit vs Jun 30, 2025)
Aug 6, 2026 · Form SCHEDULE 13G — Passive stake (13G)
Passive stake (13G) — an investor reported owning more than 5%
Filed by an outside investor (not the company). It reports a holding of more than 5% of a share class; percentage and holder name are in the filing.
Jul 1, 2026 · Form 10-K/A — Annual report (amended)
Amended annual report
Key figures from this report aren't in the SEC's structured data yet (usually appears within a day or two).
Things to know before you trade QUMSU
- How much it moves: over the last 20 sessions the average daily move was 0.04% (largest 0.8%). That is a relatively calm stock.
- Liquidity: about 10 shares (≈$103) trade per day on average. Thin volume can mean wider bid/ask spreads.
- 52-week position: $10.30 vs a range of $10.10–$10.99 (22% of the range).
- Dividends: no cash dividends in the last 2 years.
- Splits: none in the last 2 years.
- Insider trades (Form 4, last 12 months, recent 25 shown): 0 open-market buys, 0 sales.
- Latest filings: 8-K Oct 13, 2026; 8-K Sep 2, 2026; 10-Q Aug 14, 2026.
- Share count: 11.41M shares outstanding (Aug 14, 2026), +0.0% vs a year earlier.
- Listing: Nasdaq · industry: Blank Checks.
QUMSU market data (last 20 sessions)
| Date | Open | High | Low | Close | Volume |
|---|---|---|---|---|---|
| Oct 15, 2026 | 10.30 | 10.30 | 10.30 | 10.30 | 0 |
| Oct 14, 2026 | 10.30 | 10.30 | 10.30 | 10.30 | 200 |
| Oct 13, 2026 | 10.38 | 10.38 | 10.38 | 10.38 | 0 |
| Oct 12, 2026 | 10.38 | 10.38 | 10.38 | 10.38 | 0 |
| Oct 9, 2026 | 10.38 | 10.38 | 10.38 | 10.38 | 0 |
| Oct 8, 2026 | 10.38 | 10.38 | 10.38 | 10.38 | 0 |
| Oct 7, 2026 | 10.38 | 10.38 | 10.38 | 10.38 | 0 |
| Oct 6, 2026 | 10.38 | 10.38 | 10.38 | 10.38 | 0 |
| Oct 5, 2026 | 10.38 | 10.38 | 10.38 | 10.38 | 0 |
| Oct 2, 2026 | 10.38 | 10.38 | 10.38 | 10.38 | 0 |
| Oct 1, 2026 | 10.38 | 10.38 | 10.38 | 10.38 | 0 |
| Sep 30, 2026 | 10.38 | 10.38 | 10.38 | 10.38 | 0 |
| Sep 29, 2026 | 10.38 | 10.38 | 10.38 | 10.38 | 0 |
| Sep 28, 2026 | 10.38 | 10.38 | 10.38 | 10.38 | 0 |
| Sep 25, 2026 | 10.38 | 10.38 | 10.38 | 10.38 | 0 |
| Sep 24, 2026 | 10.38 | 10.38 | 10.38 | 10.38 | 0 |
| Sep 23, 2026 | 10.38 | 10.38 | 10.38 | 10.38 | 0 |
| Sep 22, 2026 | 10.38 | 10.38 | 10.38 | 10.38 | 0 |
| Sep 21, 2026 | 10.38 | 10.38 | 10.38 | 10.38 | 0 |
| Sep 18, 2026 | 10.38 | 10.38 | 10.38 | 10.38 | 0 |
About Quantumsphere Acquisition
Quantumsphere Acquisition (QUMSU) is listed on the Nasdaq and classified by the SEC under “Blank Checks”. Its business address is in NEW YORK, NY. State of incorporation: Cayman Islands. Fiscal year ends March 31. SEC CIK 2070900.
QUMSU board of directors & executives
From SEC Form 3/4/5 insider filings made in the last 12 months (date = latest filing).
Directors
| Name | Role | Latest filing |
|---|---|---|
| No Form 3/4/5 filings by this group in the last 12 months. | ||
Executive officers
| Name | Title | Latest filing |
|---|---|---|
| No Form 3/4/5 filings by this group in the last 12 months. | ||
Recent insider buys & sales
| Date | Insider | Type | Shares | Price |
|---|---|---|---|---|
| No open-market insider buys or sales reported in the last 12 months. | ||||
QUMSU financials (annual, from XBRL filings)
| Fiscal year end | Revenue | Net income | Diluted EPS | Operating cash flow |
|---|---|---|---|---|
| No annual XBRL figures available (foreign filers often report on Form 20-F). | ||||
Latest balance sheet: total assets $85.73M, total liabilities $3.54M, cash $0 (as of Jun 30, 2026).
QUMSU earnings / results-day log
| Date | Filing | Close that day |
|---|---|---|
| No 8-K earnings releases in recent filings. | ||
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Information only, not investment advice. BuyMeWhiskey is not a registered investment adviser or broker-dealer; nothing here is a recommendation to buy, sell or hold any security, and there are no price targets. Data comes from SEC EDGAR filings and public end-of-day market data and may be delayed or contain errors. Verify with the company's filings before making decisions. Prices: end-of-day data as of Oct 15, 2026, 4:00 PM ET. Filings: SEC EDGAR. Updated after every US trading day.