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Compare flows · the four S&P 500 funds · a mixed basis

IVV, SPY, SPYM and VOO: money in and out, side by side

Three months to Oct 8, 2026: of 3 S&P 500 ETFs counted throughout, SPYM took in the most, $15.1bn to Oct 7.

Two bases on one page. IVV, SPY and SPYM have daily figures: IVV from iShares; SPY and SPYM from State Street. VOO has monthly figures only, from SEC Form N-PORT, which reports all of a fund’s share classes together, so VOO’s month includes the mutual fund classes of the same portfolio. VOO’s bars are months and sit beside the others’ days; its cells below print the latest month filed and no figure, and are not blank; the total column adds the daily funds only.
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Net flow, each fund on one scale

Last three months · small multiples · the cumulative line over each
IVVDaily, from the issuer’s count
IVV−$1.0bn−$906m+$190m−$1.5bn+$491m+$1.2bn−$566m−$3.4bn−$2.5bn+$113m−$563m−$2.3bn+$297m−$854m−$2.0bn−$1.7bn−$2.1bn+$1.4bn+$1.6bn+$2.7bn−$1.4bn−$656m−$583m−$1.0bn−$194m−$349m−$39.1m+$39.0m−$737m+$1.3bn−$232m−$1.5bn−$7.4bn−$920m−$231m−$1.0bn+$232m−$1.4bn−$1.8bn−$9.7bn−$4.4bn−$6.5bn−$5.5bn−$5.1bn−$14.0bn−$6.1bn−$2.0bn+$6.5bn+$9.6bn+$8.5bn−$2.0bn+$11.7bn+$16.4bn+$3.9bn+$1.7bn+$2.2bn+$308m+$806m−$1.4bn+$153m+$2.7bn−$2.5bn−$470m−$1.2bn+$20bn a day · shared scale+$100bn cumulativeJul 9, 2026Oct 8, 2026

Net −$25.8bn over the three months; in on 23 days, out on 41.

SPYDaily, from the issuer’s count
SPY−$2.4bn+$2.6bn−$5.4bn+$8.9bn−$1.1bn+$2.7bn+$2.4bn+$260m+$1.6bn−$3.1bn+$2.6bn+$2.2bn+$1.7bn+$2.3bn+$222m−$1.2bn+$667m−$3.2bn−$6.1bn+$4.1bn−$8.2bn−$1.9bn+$6.0bn+$3.6bn−$4.2bn+$3.1bn+$4.2bn−$1.6bn+$1.9bn+$3.8bn+$4.8bn−$1.3bn−$9.3bn−$3.8bn+$1.2bn+$1.8bn+$270m+$192m−$1.6bn−$381m+$727m−$2.4bn−$1.2bn+$1.3bn+$457m+$4.0bn−$3.5bn−$2.4bn−$10.6bn−$5.0bn−$1.3bn+$6.4bn+$2.9bn+$3.9bn+$14.9bn−$5.7bn+$3.6bn−$1.9bn+$6.7bn−$8.2bn−$2.3bn−$4.2bn+$4.3bn+$20bn a day · shared scale+$100bn cumulativeJul 9, 2026Oct 8, 2026

Net +$9.0bn over the three months to Oct 7; in on 35 days, out on 28.

SPYMDaily, from the issuer’s count
SPYM−$382m+$323m+$493m+$212m+$137m+$982m+$508m+$442m−$39.3m+$388m+$334m+$217m+$422m+$30.4m+$336m−$73.0m−$358m+$286m+$317m+$336m+$240m+$683m+$68.3m+$459m+$313m+$473m+$302m+$338m+$300m+$72.2m+$253m+$85.2m+$131m+$144m−$13.5m+$302m+$72.6m+$136m−$1.2bn−$1.3bn+$140m−$610m−$27.2m−$2.2bn−$3.0bn+$290m+$5.3bn+$2.7bn+$1.4bn+$204m+$161m+$135m+$309m+$674m+$343m+$167m+$604m−$721m−$117m−$71.8m+$2.1bn+$312m−$656m+$683m+$20bn a day · shared scale+$100bn cumulativeJul 9, 2026Oct 8, 2026

Net +$15.1bn over the three months to Oct 7; in on 49 days, out on 15.

VOOMonthly, all share classes, from SEC Form N-PORT
VOOJul to Sep: not yet filed+$28.5bn, Apr 2026+$28.5bnApr 2026 · monthly+$15.8bn, May 2026+$15.8bnMay 2026 · monthly−$8.5bn, Jun 2026−$8.5bnJun 2026 · monthly+$100bn a month · shared scaleOct 8, 2026

Its latest filed month is Jun 2026: −$8.5bn. No daily figure exists. Later months arrive with its next N-PORT filing. Bars are months at the shared dollar scale.

IVVSPYSPYMMoney inMoney out, any fundCumulative since Jul 9
Daily: issuer share counts × prior-day NAV. Monthly: SEC Form N-PORT item B.6, all share classes, as filed.CSV

Period by fund

Dollars · the total column adds the daily funds only
PeriodIVVSPYSPYMVOO · monthlyTotal, daily funds
1 day · Oct 8IVV · 1 day−$1.2bnSPY · 1 daycounted to Oct 7SPYM · 1 daycounted to Oct 7VOO · 1 daymonthly only · to Jun 2026Total, daily funds · 1 day−$1.2bn 1 of 3 with a figure
1 week · Oct 2 to Oct 8IVV · 1 week−$1.3bnSPY · 1 week−$10.4bn to Oct 7SPYM · 1 week+$2.5bn to Oct 7VOO · 1 weekmonthly only · to Jun 2026Total, daily funds · 1 week−$9.3bn 1 of 3 with every day
1 month · Sep 9 to Oct 8IVV · 1 month+$24.1bnSPY · 1 month+$3.5bn to Oct 7SPYM · 1 month+$8.7bn to Oct 7VOO · 1 monthmonthly only · to Jun 2026Total, daily funds · 1 month+$36.3bn 1 of 3 with every day
3 months · Jul 9 to Oct 8IVV · 3 months−$25.8bnSPY · 3 months+$9.0bn to Oct 7SPYM · 3 months+$15.1bn to Oct 7VOO · 3 monthsmonthly only · to Jun 2026Total, daily funds · 3 months−$1.7bn 1 of 3 with every day
Year to dateIVV · Year to date+$27.1bnSPY · Year to date+$10.5bn to Oct 7SPYM · Year to date+$62.8bn to Oct 7VOO · Year to datemonthly only · to Jun 2026Total, daily funds · Year to date+$100.4bn 1 of 3 with every day
1 yearIVV · 1 year+$71.0bnSPY · 1 year+$28.7bn to Oct 7SPYM · 1 year+$68.1bn to Oct 7VOO · 1 yearmonthly only · to Jun 2026Total, daily funds · 1 year+$167.8bn 1 of 3 with every day

VOO’s latest filed month is Jun 2026, so its cells print that month and no figure: a month is never summed into a window or carried forward.

Same sources as above.CSV
IVVdaily
Net assets, Jul 8
$885.3bn
3 months
−$25.8bn · −2.9%
Days / months
in 23 · out 41
Streak
3 days out, running
Peer rank
1st of 35 U.S. large-cap blend, 1M
SEC check
Jun: +$43.6bn both; agree
SPYdaily
Net assets, Jul 8
$779.3bn
3 months
+$9.0bn · 1.2%, to Oct 7
Days / months
in 35 · out 28
Streak
1 day in, running
Peer rank
3rd of 35 U.S. large-cap blend, 1M
SEC check
Jun: +$6.7bn both; agree
SPYMdaily
Net assets, Jul 8
$157.4bn
3 months
+$15.1bn · 9.6%, to Oct 7
Days / months
in 49 · out 15
Streak
1 day in, running
Peer rank
2nd of 35 U.S. large-cap blend, 1M
SEC check
Jun: +$7.7bn both; agree
VOOmonthly
Net assets, Jun 30, filed
$1.67tn, all share classes
Jun 2026, filed
−$8.5bn
Days / months
monthly basis, not counted
Streak
monthly basis, not counted
Peer rank
not ranked: monthly basis
SEC check
Jun: −$8.5bn, filed
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 →MBB, SPMBBloomberg U.S. MBS →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 →SPYG, VOOGS&P 500 Growth →IJH, MDYS&P MidCap 400 →
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ETFIQ, IVV, SPY, SPYM and VOO: money in and out, side by side, data as of Oct 8, 2026. https://etfiq.com/flows/compare/by-index/sp-500/

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