How safe is the QQQ ETF compared to SPY? Right now, those two

The ABCs of Diversifying Away From SPY Stock for Canadians

What makes the DIA different from other major average-tracking funds like the SPDR S & P 500 ETF Trust (SPY) and the Invesco QQQ Trust (QQQ)? - Quora

Why is 5 years growth of SPY vs VOO S&P 500 ETF 30% higher, according to Google Finance? - Quora

QQQ Vs SPY: Difference, Performance & Which is Better

VUG vs. QQQ - Comparing Growth ETFs

SPY vs VOO: Comparing S&P 500 ETFs

Expected Moves: SPY, QQQ vol, VIX ETFs, Micron and more. : r/options

SPY & QQQ – A Tale of Two EFTs

How safe is the QQQ ETF compared to SPY? Right now, those two

Worst Outflows for SPY as QQQ Loses Most Since Dot-Com - Bloomberg

Is there reason to invest in some ETF other than SPY an QQQ

Why should I invest in SPY, when QQQ seems to always out perform? - Quora

QQQ vs. SPY: Which Fund Should You Choose?

SPY vs. VOO vs. IVV: There IS A Difference Between These S&P 500

QQQ vs SPY: Which ETF Is Right For You? - Canny Trading