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SC 13G/A ·Filed Oct 6, 2026

QUMS

Quantumsphere Acquisition Corp
BEARISH
Impact 5/10
Horizonweeks Processed20d 9h ago SEC0001140361-26-038779
Passive stake amendment
Actionable Insight ▼ Bearish

Wolverine's reduction to just under 3% signals waning conviction in Quantumsphere's SPAC prospects. Monitor for further selling or a potential exit below 5% threshold, which would eliminate filing requirements.

DirectionBearish
Confidencemedium
Horizonweeks
Latest settled — T+5d
QUMS ▲ +0.29% at T+5d
SHORT call ✗ call lost -0.29% · α vs SPY -0.43% · entry $10.35 → $10.38
Next anchor: T+20d in 7d
Latest observation: T+13 -0.10% FF3 residual α
Entry = T+0 close
Oct 6, 2026
via day close
T+1d
0.00%
call 0.00% · α -0.24%
$10.35
settled 20d ago
T+5d
+0.29%
call -0.29% · α -0.43%
$10.38
settled 14d ago
T+20d
Pending
in 7d
T+60d
Pending
in 2mo

Price Chart

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Executive Summary

Wolverine Asset Management LLC filed an amended Schedule 13G disclosing a 2.95% passive stake (335,957 ordinary shares) in Quantumsphere Acquisition Corp as of September 30, 2026. The filing confirms a reduction from a prior undisclosed higher stake, indicating the fund is trimming its position in this blank-check company.

Key Financial Metrics

Stake
2.95%
Investor
Wolverine Asset Management LLC
Investor Type
hedge fund

Key Facts

  • Wolverine Asset Management reported beneficial ownership of 335,957 ordinary shares, representing 2.95% of shares outstanding.
  • The stake is based on 11,406,650 ordinary shares outstanding as of August 14, 2026 per the issuer's Form 10-Q.
  • The filing is an amendment (13G/A) dated October 5, 2026, with a date of change of September 30, 2026.
  • Wolverine Asset Management is an investment adviser filing under Rule 13d-1(b) as a passive investor.
  • The prior 13G filing by Wolverine (not in provided documents) showed a higher stake, making this a reduction.

Financial Impact

Stake reduced to 2.95% from a prior higher level; no dollar value disclosed.

ownership_percentage

Risk Factors

  • Further stake reductions by Wolverine or other institutional holders could pressure the stock.
  • As a blank-check company, Quantumsphere faces inherent risk of failing to complete a de-SPAC transaction.

Investment Themes

Traditional Finance

Documents Analyzed

This report is based on 3 SEC documents filed with EDGAR.

DocumentAccession Number
SC 13G/A Filing (Primary)0001140361-26-038779
Document: 0001140361-26-038779-index.html0001140361-26-038779
Document: 0001140361-26-038779.txt0001140361-26-038779
5 reports for QUMS
Performance horizon

Track record builds as more directional reports settle.

Filters
Rows
Reports for QUMS — sortable, filterable
TypeNow
Oct 13, 2026
13d ago
425
NEUTRAL ★ 5/10
$10.38 $10.38· 0.00%▼ −0.45%$10.40 (+0.19%)
Oct 13, 2026
13d ago
8-K
BULLISH ★ 6/10
$10.38 $10.38· 0.00%▼ −0.45%$10.40 (+0.19%)
Oct 6, 2026
20d ago
SC 13G/A
BEARISH ★ 5/10
$10.35 $10.38▼ −0.29%▼ −0.43%$10.40 (−0.48%)
Sep 1, 2026
7w ago
8-K
BEARISH ★ 6/10
$10.33 $10.33· 0.00%▼ −0.96%$10.40 (−0.68%)
Jul 1, 2026
16w ago
10-K/A
NEUTRAL ★ 2/10
$10.22 $10.26▲ +0.39%▼ −0.54%$10.40 (+1.76%)
Showing 5 of 5

US Market Status

Market Closed — Opens Wed (11h 55m)

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Report published Oct 6, 2026