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BlackRock, Inc.

Position in SEIC — Sei Investments Co

CIK 2012383 New York, NY

Position in SEIC

as of Jun 30, 2026 · filed Aug 7, 2026
Position Value
$870,744,962
+$77,386,825 QoQ
Shares Held
9,927,545
-1.8% QoQ
Ownership
8.27%
of shares outstanding
% of Portfolio
0.01%
of 13F equity value
Holder Rank
#1
of 569 holders
Holding Since
Sep 2024
8 quarters on record
Voting authority Sole 96% Shared 0% None 4%

Common Shares in SEIC Over Time

Shares Held

Position Value (USD)

Position in Asset Management

Financial Services · as of Jun 30, 2026

BlackRock, Inc. holds $57,160,573,322 across 159 Asset Management names. SEIC ranks #17 (1.5% of the industry book) .

# Ticker Company Shares Value (USD) Open

All Filings in SEIC

Export CSV
8 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $870,744,962 9,927,545
2026-03-31 $793,358,137 10,110,337
2025-12-31 $790,495,629 9,637,840
2025-09-30 $785,931,772 9,262,602
2025-06-30 $826,893,508 9,202,020
2025-03-31 $882,685,074 11,370,412
2024-12-31 $948,739,139 11,502,657
2024-09-30 $789,463,978 11,410,088