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CITADEL ADVISORS LLC

Position in BLK — BlackRock, Inc.

CIK 1423053 MIAMI, FL

Position in BLK

as of Mar 31, 2026 · filed May 15, 2026
Position Value
$676,185,032
+$243,961,404 QoQ
Shares Held
703,107
+74.1% QoQ
Ownership
0.216%
of shares outstanding
% of Portfolio
0.53%
of 13F equity value
Holder Rank
not a current holder
Holding Since
Dec 2024
6 quarters on record
Voting authority Sole 100.ToString("F0")% Shared 0.ToString("F0")% None 0.ToString("F0")%

Common Shares in BLK Over Time

Shares Held

Position Value (USD)

Derivatives in BLK

reported options exposure · as of Mar 31, 2026
CallValue
$137,716,872
CallShares
143,200
PutValue
$109,154,085
PutShares
113,500

Notional value of option positions as reported on Form 13F. Calls and puts are disclosed separately and do not net against the common-share stake above.

Position in Asset Management

Financial Services · as of Mar 31, 2026

CITADEL ADVISORS LLC holds $2,727,596,144 across 144 Asset Management names. BLK ranks #1 (24.8% of the industry book) .

# Ticker Company Shares Value (USD) Open
1 BLK
BlackRock, Inc.
This page
703,107 $676,185,032

All Filings in BLK

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18 filing rows on record
Report Date Value (USD) Shares
2026-03-31 $137,716,872 143,200
2026-03-31 $676,185,032 703,107
2026-03-31 $109,154,085 113,500
2025-12-31 $432,223,628 403,819
2025-12-31 $244,251,588 228,200
2025-12-31 $184,205,514 172,100
2025-09-30 $185,256,743 158,900
2025-09-30 $179,863,427 154,274
2025-09-30 $160,773,473 137,900
2025-06-30 $75,623,643 72,074
2025-06-30 $143,537,400 136,800
2025-06-30 $153,505,275 146,300
2025-03-31 $31,430,706 33,208
2025-03-31 $178,127,536 188,200
2025-03-31 $168,189,496 177,700
2024-12-31 $13,057,851 12,738
2024-12-31 $295,129,169 287,900
2024-12-31 $234,340,146 228,600