MBB icon

iShares MBS ETF
MBB

Overview Fund Activity

915 hedge funds and large institutions have $31.9B invested in iShares MBS ETF in 2025 Q1 according to their latest regulatory filings, with 109 funds opening new positions, 318 increasing their positions, 398 reducing their positions, and 72 closing their positions.

Holders
915
Holders Change
+8
Holders Change %
+0.88%
% of All Funds
12.43%
Holding in Top 10
66
Holding in Top 10 Change
+7
Holding in Top 10 Change %
+11.86%
% of All Funds
0.9%
New
109
Increased
318
Reduced
398
Closed
72
Calls
$57.7M
Puts
$4.38M
Net Calls
+$53.3M
Net Calls Change
+$39.5M

Top Buyers

1
RH
1
RenaissanceRe Holdings
Bermuda
$268M
2
LPL Financial
2
LPL Financial
California
$2.28B
3
Fisher Asset Management
3
Fisher Asset Management
Washington
$1.97B
4
UBS AM
4
UBS AM
Illinois
$98.7M
5
Jane Street
5
Jane Street
New York
$89.1M

Top Sellers

1
Bank of America
1
Bank of America
North Carolina
$5.86B
2
EP
2
Essential Planning
New Hampshire
$5.11M
3
Envestnet Asset Management
3
Envestnet Asset Management
Illinois
$2.5B
4
Envestnet Portfolio Solutions
4
Envestnet Portfolio Solutions
Illinois
$195M
5
RWP
5
RWA Wealth Partners
Massachusetts
$133M
Name Holding Trade Value Shares
Change 		Shares
Change %
Manulife (Manufacturers Life Insurance)
76
Manulife (Manufacturers Life Insurance)
Ontario, Canada
$40.6M +$27.9M +297,461 +220%
SMFG
77
Sumitomo Mitsui Financial Group
Japan
$39.8M +$1.26M +13,455 +3%
Corient Private Wealth
78
Corient Private Wealth
Florida
$38.9M +$802K +8,555 +2%
Fidelity Investments
79
Fidelity Investments
Massachusetts
$37.4M -$2.19M -23,379 -6%
Northern Trust
80
Northern Trust
Illinois
$37.1M -$3M -32,016 -7%
FIA
81
Foundations Investment Advisors
Arizona
$36.6M +$1.9M +20,294 +5%
CI
82
Conning Inc
Connecticut
$36.4M – – –
Goldman Sachs
83
Goldman Sachs
New York
$35.5M +$4.08M +43,527 +13%
Northwestern Mutual Wealth Management
84
Northwestern Mutual Wealth Management
Wisconsin
$35M +$5.19M +55,345 +17%
Osaic Holdings
85
Osaic Holdings
Arizona
$34M -$10.1M -107,740 -23%
MNA
86
Manning & Napier Advisors
New York
$33.4M +$795K +8,473 +2%
CCA
87
Checchi Capital Advisers
California
$32.9M +$22.6M +240,604 +219%
TPW
88
Talon Private Wealth
Florida
$31.9M -$2M -21,398 -6%
ZIG
89
Zurich Insurance Group
Switzerland
$31.7M – – –
WCF
90
West Coast Financial
California
$31M +$1.92M +20,523 +7%
DJSG
91
D.J. St. Germain
Massachusetts
$31M +$2.18M +23,197 +8%
BSB
92
Bangor Savings Bank
Maine
$30.7M +$1.03M +10,963 +3%
CPO
93
Cerity Partners OCIO
New York
$30.2M +$30.2M +321,567 New
Cambridge Investment Research Advisors
94
Cambridge Investment Research Advisors
Iowa
$29.9M -$7.41M -79,062 -20%
IA
95
Integrity Alliance
Iowa
$29.4M +$4.74M +50,503 +19%
CWM
96
Cabot Wealth Management
Massachusetts
$29.2M +$2.91M +30,985 +11%
AWS
97
Atria Wealth Solutions
New York
$29.2M -$3.15M -33,553 -10%
Franklin Resources
98
Franklin Resources
California
$29.2M +$830K +8,849 +3%
SWM
99
Stockman Wealth Management
Montana
$28M +$28M +298,073 New
CCA
100
Clearwater Capital Advisors
Illinois
$27.8M +$749K +7,991 +3%
2 3
4
5 6