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
Kathryn McCarthyDirector2026-05-045,000$49.63
$248.15kBuy
Kathryn McCarthyDirector2026-05-045,000$49.63
$248.15kBuy
Kathryn McCarthyDirector2026-05-0410,000$91.07
$910.70kSell
Mark Andrew WarnerIn Remarks2026-04-284,000$91.16
$364.64kSell
Mark Andrew WarnerIn Remarks2026-04-284,000$48.47
$193.88kBuy
Sanjay SharmaOfficer2026-04-231,559$90.73
$141.45kSell
Philip McCabeTitle Executive Vice President Head of SEIs Investment Managers business2026-04-2315,000$91.82
$1.38MSell
Sanjay SharmaOfficer2026-04-2323,441$90.08
$2.11MSell
Sanjay SharmaOfficer2026-04-2312,500$49.63
$620.38kBuy
Sanjay SharmaOfficer2026-04-2312,500$49.63
$620.38kBuy

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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.50.48%60,709,291$5.44BInsider
Thomas W. Smith9.52%11,448,682$1.03BInsider
Blackrock Inc8.41%10,110,337$905.79MInstitution
Loomis Sayles Co L P7.17%8,628,879$773.06MInstitution
Vanguard Portfolio Management LLC5.09%6,125,643$548.80MInstitution
Morgan Stanley3.98%4,792,279$429.34MInstitution
Vanguard Capital Management LLC3.94%4,741,716$424.81MInstitution
Carmen Romeo3.65%4,389,535$393.26MInsider
State Street Corp3.48%4,185,178$374.95MInstitution
Bank Of America Corp2.43%2,920,506$261.65MInstitution

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SEIC vs Asset Management Stocks

TickerInst. %Insider %Net Insider (L12M)Net Insider (L3M)
SEIC51.77%48.23%Net SellingNet Selling
IVZ61.26%38.74%Net SellingNet Selling
CRBG67.96%32.04%Net SellingNet Selling
ARCC34.22%1.05%Net Buying
AMG92.75%7.25%Net BuyingNet Selling

Sei Investments Co Stock Ownership FAQ

Who owns Sei Investments Co?

Sei Investments Co (NASDAQ: SEIC) is owned by 74.78% institutional shareholders, 69.66% Sei Investments Co insiders, and 0.00% retail investors. Alfred P. West Jr. is the largest individual Sei Investments Co shareholder, owning 60.71M shares representing 50.48% of the company. Alfred P. West Jr.'s Sei Investments Co shares are currently valued at $5.44B.

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