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One River Asset Management, LLC

Position in BLK — BlackRock, Inc.

CIK 1616336 STAMFORD, CT

Position in BLK

as of Jun 30, 2026 · filed Jul 28, 2026
Position Value
$367,315
-$226,060 QoQ
Shares Held
382
-38.1% QoQ
Ownership
0.000%
of shares outstanding
% of Portfolio
1.90%
of 13F equity value
Holder Rank
#1,635
of 2,275 holders
Holding Since
Dec 2024
4 quarters on record
Voting authority Sole 100% Shared 0% None 0%

Common Shares in BLK Over Time

Shares Held

Position Value (USD)

Derivatives in BLK

reported options exposure · as of Jun 30, 2026
CallValue
$1,346,184
CallShares
1,400
PutValue
$1,442,340
PutShares
1,500

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 Jun 30, 2026

One River Asset Management, LLC holds $367,315 across 1 Asset Management name. BLK ranks #1 (100.0% of the industry book) .

# Ticker Company Shares Value (USD) Open
1 BLK
BlackRock, Inc.
This page
382 $367,315

All Filings in BLK

Export CSV
11 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $367,315 382
2026-06-30 $1,346,184 1,400
2026-06-30 $1,442,340 1,500
2026-03-31 $1,538,736 1,600
2026-03-31 $1,538,736 1,600
2026-03-31 $593,375 617
2025-12-31 $321,102 300
2025-12-31 $321,102 300
2025-12-31 $59,939 56
2024-12-31 $922,599 900
2024-12-31 $512,555 500