What does CUSIP 784117103 represent in this 13F holders report?

CUSIP 784117103 is the security identifier for SEIC - SEI INVESTMENTS CO - Common Stock used to aggregate holder disclosures.

How many institutions held SEIC - SEI INVESTMENTS CO - Common Stock in Q2 2021?

432 institutional investors reported SEIC - SEI INVESTMENTS CO - Common Stock for Q2 2021. Use the holders table for investor-level position and value details.

SEI INVESTMENTS CO - Common Stock (SEIC)

CUSIP: 784117103

Q2 2021 13F Holders as of 30 Jun 2021

Security type / class: Equity / Common Stock
Total 13F shares: 97,510,206
Total 13F value: $6,041,796,603
Share change: -486,602
Put/Call ratio: 112%
SEC-reported price per share: $61.97
Number of holders: 432
Value change: -$29,237,166
Number of buys: 185
Number of sells: 191
Shares outstanding: 120,200,577

Security key

784117103

Report period

Q2 2021

Institutions

432

Top holders

SEIC full security history Ownership snapshot Full 13F holder table Newer quarter: Q3 2026 SEI INVESTMENTS CO SEC filings SEI INVESTMENTS CO company facts SEI INVESTMENTS CO 13D/G history

Broader feeds

Latest 13F filings Latest 13D/G filings Investors directory

Reporting periods

Holder history for CUSIP 784117103

Newer quarter: Q3 2026

Recent filing periods:

Q3 2026

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

LOOMIS SAYLES & CO L P

Comparable rows

0/15

Latest evidence

31 Mar 2021

13F Highest disclosed value: $881,358,000 15 rows are not safely comparable across share classes. Showing 1-6 of 15 holder rows.

Quick read

LOOMIS SAYLES & CO L P has the largest disclosed position value at $881.36M.

0 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.

Disclosed position value Top 5

LOOMIS SAYLES & CO L P $881.36M

BlackRock Finance, Inc. $776.34M

VANGUARD GROUP INC $760.52M

ATLANTA CAPITAL MANAGEMENT CO L L C $341.44M

STATE STREET CORP $330.81M

Value bars compare disclosed positions; verify each figure against the linked filing evidence.

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 Company 13F	— denominator unverified	$881,358,000 14,465,104 shares	—	31 Mar 2021
BlackRock Finance, Inc.	13F Company 13F	— denominator unverified	$776,335,000 12,741,387 shares	—	31 Mar 2021
VANGUARD GROUP INC	13F Company 13F	— denominator unverified	$760,523,000 12,481,917 shares	—	31 Mar 2021
ATLANTA CAPITAL MANAGEMENT CO L L C	13F Company 13F	— denominator unverified	$341,435,000 5,603,719 shares	—	31 Mar 2021
STATE STREET CORP	13F Company 13F	— denominator unverified	$330,807,000 5,429,295 shares	—	31 Mar 2021
BANK OF AMERICA CORP /DE/	13F Company 13F	— denominator unverified	$233,401,000 3,830,644 shares	—	31 Mar 2021

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 Q2 2021

Investor-level positions for this CUSIP, loaded as an interactive table.

Institutions

432

97,510,206

Rows available

432

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 Q2 2021 vs Q1 2021 Across Filers

Q1 2021 holders

434

Q2 2021 holders

432

Holder diff

-2

Investor	Q1 2021 Shares	Q2 2021 Shares	Share Diff	Share Chg %	Q1 2021 value	Q2 2021 value	Value change	Value Chg %

Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).

Quarterly Holders Trend

Quarterly Value Trend

Quarterly Shares Trend