Jane Street's reduction from a larger prior stake to 3.0% signals diminishing conviction from a sophisticated quant fund. Monitor for further selling or a potential conversion to a 13D if the position drops below 5% or if activist intent emerges.
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Executive Summary
Jane Street Group, LLC filed an amended Schedule 13G disclosing a passive stake of 12,499,168 shares (3.0%) in Cipher Digital Inc. as of September 30, 2026. This represents a reduction from the prior filing where Jane Street held a larger position, signaling partial de-risking by a major quantitative trading firm.
Key Financial Metrics
Key Facts
- Jane Street Group, LLC reported beneficial ownership of 12,499,168 shares of Cipher Digital Inc. common stock, representing 3.0% of shares outstanding as of September 30, 2026.
- The filing is an amendment to Schedule 13G, indicating a passive investment intent.
- Jane Street Capital, LLC holds 10,108,034 shares (2.4%), Leonard Street Holdings, LP holds 2,151,939 shares (0.5%), and Jane Street Global Trading, LLC holds 232,044 shares (0.1%).
- The filing date is October 21, 2026, with the stake measured as of September 30, 2026.
- Prior filings show Jane Street held a larger position, indicating a reduction in this amendment.
Financial Impact
Jane Street reduced its stake in CIFR, now at 3.0% (12.5M shares). The prior filing (Feb 2026) showed a larger position, signaling a partial exit by a key institutional holder.
Risk Factors
- Continued institutional selling pressure if other funds follow Jane Street's lead.
- Potential for Jane Street to exit entirely, removing a significant holder and reducing liquidity.
- Passive filing status limits signaling value, but the reduction is a clear negative data point.
Investment Themes
Documents Analyzed
This report is based on 3 SEC documents filed with EDGAR.
| Document | Accession Number |
|---|---|
| SC 13G/A Filing (Primary) | 0001595888-26-000123 |
| Document: 0001595888-26-000123-index.html | 0001595888-26-000123 |
| Document: 0001595888-26-000123.txt | 0001595888-26-000123 |
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Oct 21, 2026 5d ago | SC 13G | $8.32 | awaiting T+5 | — | $7.94 (−4.57%) |
Oct 21, 2026 5d ago | SC 13G | $8.32 | awaiting T+5 | — | $7.94 (−4.57%) |
Oct 21, 2026 5d ago | SC 13G/A | $8.32 | awaiting T+5 | — | $7.94 (+4.57%) |
Oct 20, 2026 6d ago | Press Release | $9.13 | awaiting T+5 | — | $7.94 (−13.03%) |
Oct 16, 2026 10d ago | 8-K | $8.94 $7.92 | ▲ +11.41% | ▲ +11.26% | $7.94 (+11.19%) |
Oct 14, 2026 12d ago | 8-K | $9.94 $9.13 | ▲ +8.15% | ▲ +8.60% | $7.94 (+20.12%) |
Oct 13, 2026 13d ago | 8-K | $11.34 $8.88 | ▼ −21.69% | ▼ −20.54% | $7.94 (−29.98%) |
Oct 7, 2026 19d ago | SC 13D/A | $13.50 $10.04 | ▼ −25.63% | ▼ −25.35% | $7.94 (−41.19%) |
Sep 25, 2026 4w ago | 8-K | $17.73 $15.71 | ▼ −11.39% | ▼ −11.17% | $7.94 (−55.22%) |
Sep 25, 2026 4w ago | Press Release | $17.73 $15.71 | ▼ −11.39% | ▼ −11.17% | $7.94 (−55.22%) |
US Market Status
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