Quick Takeaways
- LOOMIS SAYLES & CO L P filed SCHEDULE 13G/A for SEI Investments Co Common Stock (SEIC).
- Disclosed ownership: 7.3%.
- Date of event: 30 Sep 2025.
LOOMIS SAYLES & CO L P - 30 Sep 2025 SCHEDULE 13G/A Report for SEI Investments Co Common Stock (SEIC)
- Filing Manager
- LOOMIS SAYLES & CO L P
- Reporting Manager
- Loomis, Sayles & Co., L.P.
- Security
- SEI Investments Co Common Stock
- Symbol
- SEIC
- Shares outstanding
- 123,638,046 shares
- Disclosed Ownership
- 8,976,122 shares
- Ownership
- 7.3%
- Form type
- SCHEDULE 13G/A
- Filing time
- 13 Nov 2025, 09:27:43 UTC
- Date of event
- 30 Sep 2025
- Previous filing
- 13 Aug 2025
- Next filing
- 12 Feb 2026
- SEC
- View on sec.gov
Quoteable Key Fact
"LOOMIS SAYLES & CO L P disclosed 7.3% ownership in SEI Investments Co Common Stock (SEIC) on 30 Sep 2025."
What Changed
- Previous schedule filing date: 13 Aug 2025.
- Current filing was accepted on 13 Nov 2025, 09:27.
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 (1)
| Name | Ownership | Shares Owned | sole voting power | shared voting power | Signature | Title | CIK |
|---|---|---|---|---|---|---|---|
| Loomis, Sayles & Co., L.P. | 7.3% | 8,976,122 | 7,443,019 | 0 | Mari Shimokawa | Deputy Chief Compliance Officer |