Quick Takeaways
- Magnetar Financial LLC filed SCHEDULE 13G/A for GSR III Acquisition Corp. Class A ordinary shares, par value $0.0001 (GSRT).
- Disclosed ownership: 2.5%.
- Date of event: 30 Sep 2025.
Magnetar Financial LLC - 30 Sep 2025 SCHEDULE 13G/A Report for GSR III Acquisition Corp. Class A ordinary shares, par value $0.0001 (GSRT)
- Filing Manager
- Magnetar Financial LLC
- Reporting Manager
- MAGNETAR FINANCIAL LLC
- Symbol
- GSRT
- Shares outstanding
- 23,426,120 shares
- Disclosed Ownership
- 585,653 shares
- Ownership
- 2.5%
- Form type
- SCHEDULE 13G/A
- Filing time
- 12 Nov 2025, 08:23:10 UTC
- Date of event
- 30 Sep 2025
- Previous filing
- 08 Aug 2025
- SEC
- View on sec.gov
Quoteable Key Fact
"Magnetar Financial LLC disclosed 2.5% ownership in GSR III Acquisition Corp. Class A ordinary shares, par value $0.0001 (GSRT) on 30 Sep 2025."
What Changed
- Previous schedule filing date: 08 Aug 2025.
- Current filing was accepted on 12 Nov 2025, 08:23.
Why This Matters
- This page explains what this Schedule 13D/13G filing tells you before manager-level rows.
- You can verify ownership claims directly against the original SEC filing.
Source Evidence
Backed by Schedule 13D/13G
See Original Filing
Beneficial ownership values are sourced from the original SEC Schedule 13D/13G filing.
Reporting Managers (4)
| Name | Ownership | Shares Owned | sole voting power | shared voting power | Signature | Title | CIK |
|---|---|---|---|---|---|---|---|
| MAGNETAR FINANCIAL LLC | 2.5% | 585,653 | 0 | 585,653 | /s/ Hayley Stein | Hayley Stein, Attorney-in-fact for David J. Snyderman, Administrative Manager of Supernova Management LLC | |
| MAGNETAR CAPITAL PARTNERS LP | 2.5% | 585,653 | 0 | 585,653 | /s/ Hayley Stein | Hayley Stein, Attorney-in-fact for David J. Snyderman, Administrative Manager of Supernova Management LLC | |
| SUPERNOVA MANAGEMENT LLC | 2.5% | 585,653 | 0 | 585,653 | /s/ Hayley Stein | Hayley Stein, Attorney-in-fact for David J. Snyderman, Administrative Manager of Supernova Management LLC | |
| DAVID J. SNYDERMAN | 2.5% | 585,653 | 0 | 585,653 | /s/ Hayley Stein | Hayley Stein, Attorney-in-fact for David J. Snyderman, Administrative Manager of Supernova Management LLC |