DOSSIER · 13F Holders · Q1 2026
BUI-R

BLACKROCK UTILS INFRASTRUCTU

6 institutions still hold BLACKROCK UTILS INFRASTRUCTU as of Q1 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 09248D112·6 13F holders·last filed Mar 31, 2026
Market cap
—
13F value held
$1K
visible holders
Holders
6
filers reporting
Concentration
99.90%
Cambridge Investment Research Advisors, Inc. #1
top holder share
AI Holders Summary · Q1 2026

6 institutions reported BUI-R in Q1 2026. Cambridge Investment Research Advisors, Inc. leads at 99.9% of the visible book.

Top holders

Sorted by position value. Source: SEC EDGAR 13F-HR filings.

#HolderValueShares% port.Quarter
01
Cambridge Investment Research Advisors, Inc.
CIK 0001419186
$1K92K0.00%Q1 2026
02
McIlrath & Eck, LLC
CIK 0001701714
$11260.00%Q1 2026
03
INGALLS & SNYDER LLC
CIK 0001041885
$018K0.00%Q1 2026
04
Janney Montgomery Scott LLC
CIK 0001329948
$016K0.00%Q1 2026
05
Virtu Financial LLC
CIK 0001533964· Market maker
$010K0.00%Q1 2026
06
SIT INVESTMENT ASSOCIATES INC
CIK 0000769317
$08000.00%Q1 2026