Catalio is a healthcare-focused investment firm; its new 5.6% passive stake signals institutional interest but no activist intent. Monitor for any future 13D conversion or additional 13G amendments indicating accumulation. The presence of three other 13G filers (Nantahala, 683 Capital, SilverArc) suggests concentrated institutional ownership — watch for coordinated activity or a future activist campaign.
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Executive Summary
Catalio Capital Management, LP filed a new Schedule 13G disclosing a 5.6% passive stake in Fractyl Health, Inc. as of September 30, 2026. The fund holds 736,807 shares across its funds and managed accounts, representing 5.55% of outstanding shares. This is a new 13G filing (not an amendment), indicating Catalio crossed the 5% threshold and is taking a passive position.
Key Financial Metrics
Key Facts
- Catalio Capital Management, LP filed a new Schedule 13G on October 13, 2026, disclosing beneficial ownership of 736,807 shares of Fractyl Health, Inc. common stock.
- The stake represents 5.55% of the 13,264,987 outstanding shares as of September 30, 2026.
- The filing is a new 13G (not an amendment), meaning Catalio recently crossed the 5% threshold.
- Catalio certifies the shares were not acquired with the purpose of changing or influencing control of the issuer.
- The position is held across Catalio Public Equities Fund (205,768 shares), Catalio Nexus Fund II (226,186 shares), and separately managed accounts (304,853 shares).
Financial Impact
5.55% passive stake valued at approximately $736,807 in shares (no per-share price disclosed in filing).
Risk Factors
- Passive 13G status could convert to activist 13D if Catalio changes intent, though no indication currently.
- Concentrated institutional ownership (multiple 5%+ holders) could amplify selling pressure if sentiment turns negative.
- No financial data in filing to assess company fundamentals or valuation.
Investment Themes
Documents Analyzed
This report is based on 3 SEC documents filed with EDGAR.
| Document | Accession Number |
|---|---|
| SC 13G Filing (Primary) | 0001958125-26-000008 |
| Document: 0001958125-26-000008-index.html | 0001958125-26-000008 |
| Document: 0001958125-26-000008.txt | 0001958125-26-000008 |
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Oct 22, 2026 4d ago | 8-K | $1.13 | awaiting T+5 | — | $1.08 (−4.42%) |
Oct 16, 2026 10d ago | 8-K | $1.55 $1.08 | ▼ −30.32% | ▼ −30.42% | $1.08 (−30.32%) |
Oct 13, 2026 12d ago | SC 13G | $4.03 $1.33 | ▼ −66.96% | ▼ −65.80% | $1.08 (−73.17%) |
Aug 10, 2026 10w ago | 8-K | $0.7018 $0.7171 | ▲ +2.18% | ▲ +2.58% | $1.08 (+53.89%) |
Aug 10, 2026 10w ago | Press Release | $0.7018 $0.7171 | ▲ +2.18% | ▲ +2.58% | $1.08 (+53.89%) |
Jul 15, 2026 14w ago | 8-K | $0.9100 $0.7580 | ▼ −16.70% | ▼ −15.72% | $1.08 (+18.68%) |
Jun 12, 2026 19w ago | Institutional Cluster | $0.8500 $0.8583 | ▲ +0.98% | ▲ +0.30% | $1.08 (+27.06%) |
Jun 11, 2026 19w ago | Insider Cluster | $0.8500 $0.8583 | ▲ +0.98% | ▲ +0.30% | $1.08 (+27.06%) |
Jun 11, 2026 19w ago | Institutional Cluster | $0.7239 $0.8500 | ▲ +17.42% | ▲ +16.99% | $1.08 (+49.19%) |
Jun 4, 2026 20w ago | 8-K | $0.7340 $0.7240 | ▼ −1.36% | ▲ +1.19% | $1.08 (+47.14%) |
US Market Status
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