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iShares MBS ETF
MBB

839 hedge funds and large institutions have $26.7B invested in iShares MBS ETF in 2024 Q1 according to their latest regulatory filings, with 87 funds opening new positions, 391 increasing their positions, 277 reducing their positions, and 90 closing their positions.

New
Increased
Maintained
Reduced
Closed

320% more call options, than puts

Call options by funds: $80.3M | Put options by funds: $19.1M

41% more repeat investments, than reductions

Existing positions increased: 391 | Existing positions reduced: 277

2% less capital invested

Capital invested by funds: $27.3B → $26.7B (-$614M)

3% less first-time investments, than exits

New positions opened: 87 | Existing positions closed: 90

2.06% less ownership

Funds ownership: 94.83% → 92.77% (-2.1%)

2% less funds holding

Funds holding: 857 → 839 (-18)

10% less funds holding in top 10

Funds holding in top 10: 80 → 72 (-8)

Holders
839
Holders Change
-18
Holders Change %
-2.1%
% of All Funds
12.09%
Holding in Top 10
72
Holding in Top 10 Change
-8
Holding in Top 10 Change %
-10%
% of All Funds
1.04%
New
87
Increased
391
Reduced
277
Closed
90
Calls
$80.3M
Puts
$19.1M
Net Calls
+$61.2M
Net Calls Change
+$21.4M

Top Buyers

Rank Fund Capital Flow
1
Jane Street
Jane Street
New York
+$658M
2
Bank of Montreal
Bank of Montreal
Ontario, Canada
+$141M
3
State Street
State Street
Massachusetts
+$110M
4
SOMRS
State of Michigan Retirement System
Michigan
+$94.8M
5
Bessemer Group
Bessemer Group
New Jersey
+$88M

Top Sellers

Rank Fund Capital Flow
1
Morgan Stanley
Morgan Stanley
New York
-$598M
2
JP Morgan Chase
JP Morgan Chase
New York
-$460M
3
Bank of America
Bank of America
North Carolina
-$350M
4
Osaic Holdings
Osaic Holdings
Arizona
-$155M
5
US Bancorp
US Bancorp
Minnesota
-$135M
Name Holding Trade Value Shares
Change 		Change in
Stake
WAM
876
Wolverine Asset Management
Illinois
– -$399K -4,238 Closed
VFG
877
Victory Financial Group
Texas
– -$385K -4,087 Closed
AWA
878
Arkadios Wealth Advisors
Georgia
– -$384K -4,080 Closed
EC
879
Elequin Capital
New York
– -$374K -3,978 Closed
ACI
880
Alpha Cubed Investments
California
– -$372K -3,949 Closed
MMM
881
Mendel Money Management
Illinois
– -$352K -3,745 Closed
IAA
882
Independent Advisor Alliance
North Carolina
– -$300K -3,188 Closed
DC
883
Davenport & Co
Virginia
– -$278K -2,956 Closed
EIP
884
Ellis Investment Partners
Pennsylvania
– -$273K -2,899 Closed
PWPCM
885
Perella Weinberg Partners Capital Management
New York
– -$261K -2,775 Closed
FFA
886
Fragasso Financial Advisors
Pennsylvania
– -$249K -2,651 Closed
SW
887
SVB Wealth
Massachusetts
– -$242K -2,576 Closed
SC
888
Solstein Capital
California
– -$242K -2,571 Closed
T
889
TCWP
Ohio
– -$227K -2,411 Closed
KDA
890
Kraft Davis & Associates
Missouri
– -$219K -2,369 Closed
IIC
891
Ironwood Investment Counsel
Arizona
– -$221K -2,354 Closed
C
892
Certuity
Florida
– -$221K -2,348 Closed
TFP
893
Traction Financial Partners
Wyoming
– -$219K -2,326 Closed
NAM
894
NTV Asset Management
West Virginia
– -$218K -2,322 Closed
P
895
&Partners
Tennessee
– -$217K -2,311 Closed
CPIG
896
Chicago Partners Investment Group
Illinois
– -$211K -2,281 Closed
Empower Advisory Group
897
Empower Advisory Group
Colorado
– -$213K -2,267 Closed
JWM
898
JPL Wealth Management
Colorado
– -$213K -2,263 Closed
ACM
899
Advisors Capital Management
New Jersey
– -$201K -2,135 Closed
BI
900
Bramshill Investments
Florida
– -$109K -1,160 Closed
34 35
36
37 38

MBB Hedge Fund Activity: Q1 2024 in Review

839 of the 6,942 institutional investors tracked by Wall St. Rank reported a position in iShares MBS ETF (MBB) for Q1 2024, worth a combined $26.7B — down 2.3% from $27.3B a quarter earlier.

Sellers outnumbered buyers: 90 funds closed out of MBB and 87 opened new positions — a net loss of 3 holders — while 277 trimmed existing stakes and 391 added.

The largest buyer was Jane Street, adding an estimated $658M. The largest seller was Morgan Stanley, cutting an estimated $598M.

  • 839 institutional investors held iShares MBS ETF (MBB) as of Q1 2024, down from 857 in Q4 2023.
  • Funds reported $26.7B of iShares MBS ETF stock for Q1 2024, down 2.3% quarter-over-quarter.
  • 87 funds opened new iShares MBS ETF positions in Q1 2024 and 90 closed out, a net change of -3 holders.
  • The largest iShares MBS ETF buyer in Q1 2024 was Jane Street, an estimated $658M added.
  • The largest iShares MBS ETF seller in Q1 2024 was Morgan Stanley, an estimated $598M sold.

Based on aggregated 13F filings for Q1 2024.