Ishares Mbs ETF
$90.000%
+$1.0B
Net Activity
+1.24% total shares
Institutions Holding
1031
Popularity Rank
#460
Avg Weight
0.50%
Total Value
$35.1B
1031 institutions currently hold MBB, with 648 net buyers and 335 net sellers this quarter.
Institutional Moves (Q2 2026)
Majority Increased
Based on recent trading activity
Net Selling Institutions
335
Net Buying Institutions
648
Top 5 by Value
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Across its top 20 institutional holders, MBB's holder base skews toward low-concentration, low-turnover investors on average (avg. concentration score 8/100, avg. turnover score 20/100).
MBB ranks #460 out of 37696 tracked stocks by institutional interest — one of the most closely watched names in our coverage.
MBB is a top-conviction position for Midland Wealth Advisors, LLC — at 11.2% of their entire disclosed 13F portfolio, it's one of their largest single bets, not just a passing allocation.
The largest dollar stake in MBB belongs to Bank Of America CORP /de/, but the position matters far more to Midland Wealth Advisors, LLC, who has 11.2% of their own portfolio riding on it — a reminder that the biggest holder by size and the holder with the biggest bet aren't always the same fund.
Market Street Wealth Management Advisors LLC has added to its MBB position for two straight quarters, increasing it by $19.5M to reach $19.8M today.
Avidian Wealth Enterprises, LLC has trimmed its MBB position for two straight quarters, cutting it by $37.0M while still holding $39.4M.
MBB is up 0% today, and institutions have been net buyers of $1.0B this quarter — today's price move and the underlying institutional flow are pointing the same direction.
+$2.3B
Total Buy Value
$1.3B
Total Sell Value
648
Net Buyers
335
Net Sellers
MBB
Q2 2026
Top 5 Institutional Movers
-$325.1M
+$177.2M
+$165.7M
-$164.2M
+$133.5M
MBB does not currently have enough recent insider (Form 4) trading activity to compute a convergence signal against its 13F institutional flows.
13F data as of 2026-09-30 quarterly filings. Note: many large institutions file close to the 45-day post-quarter deadline, so early-quarter flow figures can shift substantially as more filings arrive.
| Action | Member | Trade Date | Amount |
|---|---|---|---|
| Buy | John Boozman Senate | 2026-05-27 | $1K–$15K |
| Sell (Partial) | John Boozman Senate | 2026-05-13 | $1K–$15K |
| Sell (Partial) | John Boozman Senate | 2026-05-13 | $1K–$15K |
| Sell (Partial) | John Boozman Senate | 2026-02-06 | $1K–$15K |
| Buy | John Boozman Senate | 2026-01-23 | $1K–$15K |
| Buy | John Boozman Senate | 2025-11-21 | $1K–$15K |
| Sell (Partial) | John Boozman Senate | 2025-09-16 | $1K–$15K |
| Buy | John Boozman Senate | 2025-08-01 | $1K–$15K |
No Form 144 planned sale filings in the last 90 days
No Schedule 13D/13G filings for this ticker
No Form 8-K filings for this ticker
464288588
The most-added stocks by 13F institutions this quarter
Institutions Holding
6,278
Total reported value
$2.2T
3254 13F institutions increased their position this quarter
Institutions Holding
6,025
Total reported value
$3.6T
3054 13F institutions increased their position this quarter
Institutions Holding
6,188
Total reported value
$1.8T
2995 13F institutions increased their position this quarter
The most widely held stocks tracked across all 13F institutions
Institutions Holding
4,949
Total reported value
$485.2B
Held by 4949 institutions — one of the most-tracked stocks on AlphaSMO
Institutions Holding
4,868
Total reported value
$1.5T
Held by 4868 institutions — one of the most-tracked stocks on AlphaSMO
Institutions Holding
4,789
Total reported value
$1.2T
Held by 4789 institutions — one of the most-tracked stocks on AlphaSMO
Access MBB's institutional ownership data programmatically:
REST API
curl https://alphasmo.com/api/v1/market/stock/MBBCLI
npx alphasmo stocks get MBB