As of the latest SEC filings, ISHARES MBS ETF (MBB) is held by 65 institutional funds. The largest fund shareholder is Old Westbury Credit Income Fund (OWCIX), holding an estimated $142,170,000.00 in market value, representing 5.60% of its portfolio.
Funds holding ISHARES MBS ETF (MBB)
Source: SEC Form N-PORT institutional portfolio disclosures
- Ticker:
- MBB
- CIK:
| Fund | Type | Manager | Weight | Market Value | Shares |
Report Date
|
Filing Date
|
|---|---|---|---|---|---|---|---|
|
OWCIX
Old Westbury Credit Income Fund
|
MF | Independent / Boutique | 5.60% | $142,170,000.00 | 1,500,000 | Apr 30, 2026 | Jun 26, 2026 |
|
APCB
ActivePassive Core Bond ETF
|
ETF | Independent / Boutique | 13.67% | $126,334,395.66 | 1,303,626 | Feb 28, 2026 | Apr 24, 2026 |
|
BDBT
Bluemonte Core Bond ETF
|
ETF | Independent / Boutique | 15.11% | $67,775,661.52 | 715,084 | Apr 30, 2026 | Jun 26, 2026 |
|
-
AVIP Constellation Dynamic Risk Balanced Portfolio
|
ETF | Independent / Boutique | 3.29% | $47,087,983.80 | 495,924 | Mar 31, 2026 | May 29, 2026 |
|
BVDAX
BlackRock 60/40 Target Allocation ETF V.I. Fund
|
MF | BlackRock / iShares | 5.05% | $41,365,822.05 | 435,659 | Mar 31, 2026 | May 28, 2026 |
|
SSIRX
Ocean Park Tactical Core Income Fund
|
MF | Independent / Boutique | 3.50% | $38,103,435.00 | 401,300 | Mar 31, 2026 | May 29, 2026 |
|
FTRB
Federated Hermes Total Return Bond ETF
|
ETF | Federated Hermes | 7.21% | $33,728,139.00 | 355,220 | Mar 31, 2026 | May 22, 2026 |
|
MAMB
Monarch Ambassador Income ETF
|
ETF | Independent / Boutique | 18.70% | $32,371,816.40 | 334,040 | Feb 28, 2026 | Apr 28, 2026 |
|
-
LVIP BlackRock U.S. Growth ETF Allocation Managed Risk Fund
|
ETF | Independent / Boutique | 4.90% | $27,943,120.35 | 294,293 | Mar 31, 2026 | May 18, 2026 |
|
WTBN
WisdomTree Bianco Total Return Fund
|
ETF | WisdomTree | 26.40% | $26,096,700.08 | 269,288 | Feb 28, 2026 | Apr 28, 2026 |
|
TBFC
The Brinsmere Fund - Conservative ETF
|
ETF | Independent / Boutique | 6.58% | $22,441,527.45 | 236,351 | Mar 31, 2026 | May 28, 2026 |
|
-
LVIP BlackRock Global Growth ETF Allocation Managed Risk Fund
|
ETF | Independent / Boutique | 4.90% | $21,591,060.30 | 227,394 | Mar 31, 2026 | May 18, 2026 |
|
BNDC
FlexShares Core Select Bond Fund
|
ETF | Independent / Boutique | 10.19% | $17,216,502.66 | 181,647 | Apr 30, 2026 | Jun 25, 2026 |
|
ADFI
Anfield Dynamic Fixed Income ETF
|
ETF | Independent / Boutique | 30.99% | $15,861,148.66 | 167,347 | Apr 30, 2026 | Jun 29, 2026 |
|
-
JNL Moderate Growth ETF Allocation Fund
|
ETF | Independent / Boutique | 4.12% | $14,584,699.80 | 153,604 | Mar 31, 2026 | May 28, 2026 |
|
-
JNL Moderate ETF Allocation Fund
|
ETF | Independent / Boutique | 6.14% | $14,028,482.70 | 147,746 | Mar 31, 2026 | May 28, 2026 |
|
-
Global Atlantic BlackRock Selects Managed Risk Portfolio
|
ETF | Independent / Boutique | 9.71% | $11,988,102.15 | 126,257 | Mar 31, 2026 | May 26, 2026 |
|
-
NVIT iShares Fixed Income ETF Fund
|
ETF | Independent / Boutique | 10.07% | $10,252,321.20 | 107,976 | Mar 31, 2026 | May 18, 2026 |
|
ITDC
iShares LifePath Target Date 2035 ETF
|
ETF | BlackRock / iShares | 8.74% | $8,045,400.30 | 84,885 | Apr 30, 2026 | Jun 25, 2026 |
|
BYLD
iShares Yield Optimized Bond ETF
|
ETF | BlackRock / iShares | 1.99% | $7,720,873.58 | 81,461 | Apr 30, 2026 | Jun 26, 2026 |
|
PFFBX
PFG Fidelity Institutional AM Core Plus Bond Strategy Fund
|
MF | Independent / Boutique | 11.01% | $7,543,634.98 | 79,591 | Apr 30, 2026 | Jun 26, 2026 |
|
-
JNL Growth ETF Allocation Fund
|
ETF | Independent / Boutique | 1.82% | $7,395,750.45 | 77,891 | Mar 31, 2026 | May 28, 2026 |
|
ITDB
iShares LifePath Target Date 2030 ETF
|
ETF | BlackRock / iShares | 9.99% | $7,256,735.92 | 76,564 | Apr 30, 2026 | Jun 25, 2026 |
|
TBFG
The Brinsmere Fund - Growth ETF
|
ETF | Independent / Boutique | 2.01% | $7,104,823.65 | 74,827 | Mar 31, 2026 | May 28, 2026 |
|
HCYAX
Hilton Tactical Income Fund
|
MF | Direxion | 4.78% | $6,521,558.45 | 67,295 | Feb 28, 2026 | Apr 29, 2026 |
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