NASDAQ: SEIC
Sei Investments Co Stock Ownership - Who owns Sei Investments Co?

Insider buying vs selling

Have Sei Investments Co insiders been buying or selling?

Buy
Sell
NameRoleDateSharesPriceValue
Michael PetersonEXECUTIVE VICE PRESIDENT2025-08-077,089$88.55
$627.73kSell
Michael PetersonEXECUTIVE VICE PRESIDENT2025-08-077,089$61.81
$438.17kBuy
Michael PetersonEXECUTIVE VICE PRESIDENT2025-08-05684$61.81
$42.28kBuy
Michael PetersonEXECUTIVE VICE PRESIDENT2025-08-05684$88.69
$60.66kSell
Michael PetersonEXECUTIVE VICE PRESIDENT2025-07-314,727$88.51
$418.39kSell
Michael PetersonEXECUTIVE VICE PRESIDENT2025-07-314,727$61.81
$292.18kBuy
Mark Andrew WarnerInsider2025-07-295,000$49.63
$248.15kBuy
Mark Andrew WarnerInsider2025-07-295,000$88.75
$443.75kSell
Alfred P. West Jr.Executive Chairman2025-05-291,628$85.21
$138.72kSell
Alfred P. West Jr.Executive Chairman2025-05-2964,498$84.26
$5.43MSell

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Net Insider Buy/Sell (L12M) Ownership

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SEIC Shareholders

What type of owners hold Sei Investments Co stock?

Institutional
Insider
Retail
NameHoldSharesValueType
Alfred P. West Jr.49.16%60,771,090$5.36BInsider
Thomas W. Smith9.26%11,448,682$1.01BInsider
Vanguard Group Inc9.08%11,229,621$990.34MInstitution
Blackrock Inc7.44%9,202,020$811.53MInstitution
Loomis Sayles Co L P7.15%8,841,249$779.71MInstitution
Morgan Stanley4.56%5,634,328$496.89MInstitution
State Street Corp3.84%4,745,485$418.50MInstitution
Carmen Romeo3.56%4,402,769$388.28MInsider
Bank Of America Corp2.56%3,160,636$278.74MInstitution
Beutel Goodman Co Ltd2.10%2,600,616$229.35MInstitution

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SEIC vs Asset Management Stocks

TickerInst. %Insider %Net Insider (L12M)Net Insider (L3M)
SEIC51.76%48.24%Net SellingNet Selling
IVZ60.78%39.22%Net Selling
HLNE44.82%55.18%Net Selling
BEN54.50%44.35%Net Buying
STEP59.63%40.37%Net SellingNet Selling

Sei Investments Co Stock Ownership FAQ

Who owns Sei Investments Co?

Sei Investments Co (NASDAQ: SEIC) is owned by 72.72% institutional shareholders, 67.77% Sei Investments Co insiders, and 0.00% retail investors. Alfred P. West Jr. is the largest individual Sei Investments Co shareholder, owning 60.77M shares representing 49.16% of the company. Alfred P. West Jr.'s Sei Investments Co shares are currently valued at $5.36B.

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