# Release: Active and Index Investing, August 2026 > Investment Company Institute’s paper “Release: Active and Index Investing, August 2026”, summarized by ETFIQ with its own data beside it. Data as of Oct 21, 2026. Rebuilt every trading night. Published Sep 30, 2026 by Investment Company Institute. Summary by ETFIQ as of Oct 21, 2026. ## Release: Active and Index Investing, August 2026 The Investment Company Institute's September 2026 release shows index mutual funds and ETFs at $22.40 trillion in August, ahead of $18.87 trillion in active funds. Investment Company Institute · Industry body · Read the full paper at Investment Company Institute ↗ ### What it says Figures as stated by Investment Company Institute, Sep 30, 2026 - Index mutual funds and ETFs took in a net $82.54 billion in August while active long-term funds lost $17.05 billion, per the Investment Company Institute. (ICI) - Investment Company Institute data show active fund assets up 1.5% in August to $18.87 trillion, against a 2.9% gain for index assets. (ICI) - Active funds focused on US stocks saw $34.45 billion leave in August, while index funds of the same type gained $20.41 billion, per the Investment Company Institute. (ICI) - Bond funds drew inflows on both sides in August, $31.62 billion for active and $45.55 billion for index, the Investment Company Institute says. (ICI) ### The ETFIQ take ETFIQ data to Oct 20, 2026 · the 746 of 4,807 ETFs ETFIQ covers with a daily figure, Sep 21, 2026 to Oct 20, 2026 Investment Company Institute reports index mutual fund and ETF assets of $22.40 trillion in August, against $18.87 trillion for active. From Sep 21, 2026 to Oct 20, 2026, the ETFs ETFIQ can count had a net flow of +$127.9bn, with +$90.1bn for stock ETFs and +$35.7bn for bond ETFs. +$127.9bn net flow, Sep 21, 2026 to Oct 20, 2026, summed over the 746 of 4,807 ETFs ETFIQ covers with a daily figure , Oct 20, 2026. ETFIQ +$461.8bn net flow, Jan 2, 2026 to Oct 20, 2026, summed over the 713 of 4,807 ETFs ETFIQ covers with a daily figure , Oct 20, 2026. ETFIQ +$90.1bn net flow into stock ETFs, Sep 21, 2026 to Oct 20, 2026, over the 322 of 1,739 with a daily figure , Oct 20, 2026. ETFIQ +$35.7bn net flow into bond ETFs, Sep 21, 2026 to Oct 20, 2026, over the 204 of 833 with a daily figure , Oct 20, 2026. ETFIQ Paper: Active and index US long-term funds and ETFs, August 2026. ETFIQ: the 746 of 4,807 ETFs ETFIQ covers with a daily figure, Sep 21, 2026 to Oct 20, 2026. Net flow is the change in shares outstanding times the day’s NAV, summed over the days in the window, for the funds with a daily figure. The two sets and windows differ; the figures are stated, not reconciled. Method Data ### Related ETFs The largest ETFs ETFIQ covers, by net assets - VOO Vanguard S&P 500 ETF: +16.5% - IVV iShares Core S&P 500 ETF: +16.5% - SPY SPDR S&P 500 ETF Trust: +16.4% - VTI Vanguard Morningstar Total Stock Market ETF: +15.9% - QQQ Invesco QQQ Trust, Series 1: +19.2% - VUG Vanguard Morningstar Growth ETF: +11.2% Figure: total return, 1 year, to Oct 21, 2026, from each fund’s page. All 4,807 ETFs in the screener → ### Related papers J.P. Morgan Asset Management · Issuer · Oct 15, 2026 · ETFIQ take #### Guide to ETFs J.P. Morgan Asset Management's October 2026 Guide to ETFs counts 5,677 U.S. ETFs holding $16.3 Tn, with data through September 30, 2026. Flows Bonds Read the paper ↗ First Trust · Issuer · Oct 7, 2026 · ETFIQ take #### ETF Data Watch First Trust's October 2026 flows monitor shows US-listed ETFs took in $139.9 billion of net inflows in September, lifting total assets to $15.9 trillion. Flows Bonds Income Read the paper ↗ First Trust · Issuer · Sep 8, 2026 · ETFIQ take #### ETF Data Watch Flier - September 2026 First Trust's September 2026 flows monitor counts $179.6 billion of net new money into US-listed ETFs during August, lifting their assets to $16.1 trillion. Flows Bonds Income Read the paper ↗ All 16 papers on flows → ### Questions people ask What does the Investment Company Institute paper conclude? The Investment Company Institute's September 2026 release shows index mutual funds and ETFs at $22.40 trillion in August, ahead of $18.87 trillion in active funds. The paper’s own words are at the link above. What does ETFIQ’s data show on the same question? From Sep 21, 2026 to Oct 20, 2026, the ETFs ETFIQ can count had a net flow of +$127.9bn, with +$90.1bn for stock ETFs and +$35.7bn for bond ETFs. ETFIQ states both figures and does not reconcile them. What is an ETF’s net flow? The change in its shares outstanding times its net asset value, summed over the days of a window: money in less money out. Where can I read “Release: Active and Index Investing, August 2026”? On Investment Company Institute’s own site. ETFIQ summarizes the paper and does not host it. --- Source: ETFIQ, independent ETF data. Recomputed nightly from public filings and prices. Cite: ETFIQ, Release: Active and Index Investing, August 2026 (Investment Company Institute), summary and ETFIQ take, as of Oct 21, 2026. https://etfiq.com/research/library/ici-release-active-and-index-investing-august-2026/ Licence: https://etfiq.com/license/ Figures ETFIQ computes are free to use with attribution: ETFIQ (etfiq.com). Issuer data stays under its owner's terms. HTML: https://etfiq.com/research/library/ici-release-active-and-index-investing-august-2026/