Security key
784117103
- Security type / class
- Equity / Common Stock
- Total 13F shares
- 89,973,545
- Total 13F value
- $7,059,987,174
- Share change
- +652,463
- Put/Call ratio
- 209%
- SEC-reported price per share
- $78.47
- Number of holders
- 566
- Value change
- +$44,990,176
- Number of buys
- 278
- Number of sells
- 239
- Shares outstanding
- 122,303,095
Holder snapshot
7 signals
Open additional details 1 more signal available
Security identity
Names, identifiers, and filing context for this profile.
1 source field
Report period
Q1 2026
Institutions
566
Top holders
10
SEIC full security history
Ownership snapshot
Full 13F holder table
Newer quarter: Q2 2026
SEI INVESTMENTS CO SEC filings
SEI INVESTMENTS CO company facts
Broader feeds
Reporting periods
Holder history for CUSIP 784117103
Recent filing periods:
Ownership snapshot
Top reported holders of SEIC - SEI INVESTMENTS CO - Common Stock (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
LOOMIS SAYLES & CO L P
Disclosed value leader
VANGUARD GROUP INC
Comparable rows
15/15
Latest evidence
31 Mar 2026
13F
13D/G
3/4/5
Lead comparable stake: 7.1%
13D/G row: LOOMIS SAYLES & CO L P
Showing 1-6 of 15 holder rows.
Quick read
LOOMIS SAYLES & CO L P leads the comparable SEC ownership view at 7.1%.
15 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens LOOMIS SAYLES & CO L P's linked filing trail.
Comparable ownership
Top 5
LOOMIS SAYLES & CO L P
7.1%
BlackRock, Inc.
6.8%
VANGUARD PORTFOLIO MANAGEMENT LLC
5%
Carmen Romeo
1.3%
Jonathan Brassington
0.01%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-6 of 15 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| LOOMIS SAYLES & CO L P |
13F
13D/G
Company
|
7.1%
from 13D/G
|
$717,234,871
8,744,634 shares
|
— | 31 Dec 2025 |
| BlackRock, Inc. |
13F
13D/G
Company
|
6.8%
from 13D/G
|
$790,495,640
9,637,840 shares
|
— | 31 Dec 2025 |
| VANGUARD PORTFOLIO MANAGEMENT LLC |
13D/G
Vanguard Portfolio Management
|
5%
|
$481,650,979
6,138,027 shares
|
$0 | 31 Mar 2026 |
| Carmen Romeo |
3/4/5
Director
|
1.3%
|
$124,885,851
1,560,293 shares
|
-$420,050 | 30 Dec 2025 |
| Jonathan Brassington |
3/4/5
Director
|
0.01%
|
$496,808
6,207 shares
|
— | 12 Dec 2025 |
| Karin A. Risi |
3/4/5
Director
|
0%
|
$347,533
4,342 shares
|
— | 12 Dec 2025 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
13F holder rows
Institutional holders as of Q1 2026
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
566
Shares
89,973,545
Rows available
566
| Investor | Option | Weight % | Change % | SEC-reported value | * Price | Shares | Share Change | Activity | Report Period |
|---|
* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.
Compare Q1 2026 vs Q1 2026 Across Filers
Q1 2026 holders
566
Q1 2026 holders
566
Holder diff
0
| Investor | Q1 2026 Shares | Q1 2026 Shares | Share Diff | Share Chg % | Q1 2026 value | Q1 2026 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend