ETFIQ
RankingsCompareHoldingsFlowsResearch
ETF ModelsMy portfolioWeekly note
Compare flows · the two Bloomberg U.S. MBS funds · daily figures

MBB and SPMB: money in and out, side by side

Three months to Oct 8, 2026: of 2 Bloomberg U.S. MBS ETFs counted throughout, SPMB took in the most, $110m to Oct 7.

Share on XDownload as PDFOpen these funds in the flows tool →

Net flow, each fund on one scale

Last three months · small multiples · the cumulative line over each
MBBDaily, from the issuer’s count
MBB+$572m+$84.2m−$1.3bn−$190m−$271m−$44.9m−$179m−$717m+$1.5bn a day · shared scale+$2.5bn cumulativeJul 9, 2026Oct 8, 2026

Net −$2.0bn over the three months; in on 2 days, out on 6.

SPMBDaily, from the issuer’s count
SPMB−$6.6m+$8.8m+$8.8m+$32.8m+$26.4m+$13.2m+$11.0m+$33.0m+$11.0m+$6.6m+$4.4m+$13.3m+$8.8m+$8.8m+$10.9m+$10.8m+$10.8m+$2.2m−$21.6m−$64.2m−$19.1m+$14.8m−$6.3m−$8.4m+$1.5bn a day · shared scale+$2.5bn cumulativeJul 9, 2026Oct 8, 2026

Net +$110m over the three months to Oct 7; in on 18 days, out on 6.

MBBSPMBMoney inMoney out, any fundCumulative since Jul 9
Daily: issuer share counts × prior-day NAV.CSV

Period by fund

Dollars · the total column adds the daily funds only
PeriodMBBSPMBTotal, daily funds
1 day · Oct 8MBB · 1 day$0SPMB · 1 daycounted to Oct 7Total, daily funds · 1 day$0 1 of 2 with a figure
1 week · Oct 2 to Oct 8MBB · 1 week$0SPMB · 1 week−$8.4m to Oct 7Total, daily funds · 1 week−$8.4m 1 of 2 with every day
1 month · Sep 9 to Oct 8MBB · 1 month−$2.7bnSPMB · 1 month−$70.2m to Oct 7Total, daily funds · 1 month−$2.7bn 1 of 2 with every day
3 months · Jul 9 to Oct 8MBB · 3 months−$2.0bnSPMB · 3 months+$110m to Oct 7Total, daily funds · 3 months−$1.9bn 1 of 2 with every day
Year to dateMBB · Year to date−$1.1bnSPMB · Year to date+$574m to Oct 7Total, daily funds · Year to date−$572m 1 of 2 with every day
1 yearMBB · 1 year−$4.4bnSPMB · 1 year+$841m to Oct 7Total, daily funds · 1 year−$3.6bn 1 of 2 with every day
Same sources as above.CSV
MBBdaily
Net assets, Jul 8
$39.3bn
3 months
−$2.0bn · −5.1%
Days / months
in 2 · out 6
Streak
none
Peer rank
1st of 3 Government mortgage-backed, 1M
SEC check
May: +$451m both; agree
SPMBdaily
Net assets, Jul 8
$7.0bn
3 months
+$110m · 1.6%, to Oct 7
Days / months
in 18 · out 6
Streak
none
Peer rank
2nd of 3 Government mortgage-backed, 1M
SEC check
Jun: +$125m both; agree
Other sets, chosen by rule

Funds tracking the same index. Each is a static page; the flows tool loads any of them.

AGG, SPABBloomberg U.S. Aggregate Bond →SPBO, VTCBloomberg U.S. Corporate Bond →PBP, XYLDCboe S&P 500 BuyWrite →GOVZ, ZROZICE BofA Long US Treasury Principal STRIPS →USIG, CORPICE BofA US Corporate →SPHY, BBHYICE BofA US High Yield →SHY, BBSBICE U.S. Treasury 1-3 Year Bond →TLT, BBLBICE U.S. Treasury 20+ Year Bond →TIP, VTPICE U.S. Treasury Inflation Linked Bond →TBLL, TRSYICE U.S. Treasury Short Bond →QQQ, QQQMNASDAQ-100 →IWF, VONGRussell 1000 Growth →IWM, VTWORussell 2000 →IVV, SPY, SPYM, VOOS&P 500 →SPYG, VOOGS&P 500 Growth →IJH, MDYS&P MidCap 400 →
The fund flows tool · /flows/tool/

Any ETFs side by side, up to ten, or a whole category, segment, desk, theme, index or issuer: 1D to 1Y or your own dates, daily or monthly bars, the running total over each fund, a table with each figure’s share of net assets at the window’s start, and the selection as CSV. The link opens it on this set.

Open the tool →
Cite this page

ETFIQ, MBB and SPMB: money in and out, side by side, data as of Oct 8, 2026. https://etfiq.com/flows/compare/by-index/bloomberg-us-mbs/

Open data →

ETFIQ is an independent publisher and makes no recommendations; a rank is a sort of one published figure, not an opinion.