SC 13G/A ·Filed Oct 8, 2026
Passive stake amendment
Actionable Insight • Neutral
Monitor for any future conversion to Schedule 13D, which would signal activist intent. For now, Dimensional remains a passive holder — no immediate catalyst.
Latest settled — T+5d
FSM ▼ -0.66% at T+5d
NEUTRAL call -0.66% · α vs SPY -0.38% · entry $10.61 → $10.54
Latest observation: T+11 -15.62% FF3 residual α
T+1d
+2.92%
call +2.92% · α +2.32%
$10.92
settled 18d ago
T+5d
-0.66%
call -0.66% · α -0.38%
$10.54
settled 12d ago
T+20d
Pending
in 9d
T+60d
Pending
in 2mo
Price Chart
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Executive Summary
Dimensional Fund Advisors LP filed an amended Schedule 13G disclosing a 6.2% passive stake in Fortuna Mining Corp. as of September 30, 2026, representing 18,429,523 common shares. This is a routine passive ownership update with no change in investment intent.
Key Financial Metrics
Stake
6.2%
Investor
Dimensional Fund Advisors LP
Investor Type
mutual fund
Key Facts
- Dimensional Fund Advisors LP holds 18,429,523 shares of Fortuna Mining Corp. common stock, representing 6.2% of shares outstanding.
- The filing is an amendment to Schedule 13G, confirming passive investment intent under Rule 13d-1(b).
- Dimensional disclaims beneficial ownership; all securities are held by client funds.
- No single fund's interest exceeds 5% of the class.
Financial Impact
No material financial impact — passive stake disclosure with no change in strategy.
Risk Factors
- No material risks identified from this filing.
Investment Themes
Materials & Mining
Documents Analyzed
This report is based on 3 SEC documents filed with EDGAR.
| Document | Accession Number |
|---|---|
| SC 13G/A Filing (Primary) | 0000354204-26-001025 |
| Document: 0000354204-26-001025-index.html | 0000354204-26-001025 |
| Document: 0000354204-26-001025.txt | 0000354204-26-001025 |
37 reports for FSM
60% Hit rate @ T+60 Went positive at some point 11 of 13 best @ T+20▲ +46.07%
Filters
Rows
| Type | Now | ||||
|---|---|---|---|---|---|
Oct 22, 2026 5d ago | 6-K | $9.52 | awaiting T+60 | — | $9.48 (−0.42%) |
Oct 20, 2026 7d ago | 6-K | $10.39 | awaiting T+60 | — | $9.48 (−8.76%) |
Oct 13, 2026 14d ago | 6-K | $10.58 | awaiting T+60 | — | $9.48 (−10.40%) |
Oct 8, 2026 18d ago | SC 13G/A | $10.61 | awaiting T+60 | — | $9.48 (−10.65%) |
Oct 7, 2026 19d ago | 6-K | $10.12 | awaiting T+60 | — | $9.48 (−6.33%) |
Sep 24, 2026 4w ago | 6-K | $11.50 | awaiting T+60 | — | $9.48 (−17.57%) |
Aug 10, 2026 11w ago | Press Release | $10.83 | awaiting T+60 | — | $9.48 (−12.47%) |
Aug 5, 2026 11w ago | Press Release | $9.56 | awaiting T+60 | — | $9.48 (+0.84%) |
Jul 30, 2026 12w ago | 6-K | $8.77 $9.18 | ▲ +4.67% | ▲ +2.21% | $9.48 (+8.09%) |
Jul 23, 2026 13w ago | 6-K | $8.42 $10.54 | ▲ +25.18% | ▲ +20.63% | $9.48 (+12.59%) |
Showing 10 of 37
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