Both are SP500 ETF and both are fairly close to the index. SPY has much larger size probably due to its early creation date. From Yahoo Finance: SPX 3426.96 SPY 342.57, forward dividend yield 1.85% IVV 343.98, forward dividend yield 2.04% It looks like SPY is tracking SPX more accurately? But why they have different dividend yield? Can we know the SPX dividend yield?
%% Good points; like SPY+ VOO. SPY is the liquidity leader VOO tends to beat SPY mostly a little bit but not always. ALL my charts are SPY/SPXL/UPRO, so I use those...………………………………………………………………………………………………………………………………………..
In addition to a higher expense ratio, SPY can't lend shares, use derivatives, or reinvest dividends. IVV and VOO can do these things and have tracked the S&P 500 index slightly better than SPY. https://www.marketwatch.com/story/why-your-choice-of-sp-500-etf-matters-2013-03-19
Wow, good to know. But the article was written in 2013. Is it still true now? At least I see option trading is there for SPY.
I'm not familiar with the IVV, but the SPY price mostly deviates slightly from the SPX Index because the SPY is based on the S&P500 Futures contract whereas the SPX Index is based on the real time price of the 500 stocks that comprise this index. The S&P Futures contracts expire once every 3 months, at which time both underlying come into alignment.
I don't have a reference to attest the SPY (which is an ETF) is based off the S&P 500 Futures Contract (S&P Eminis /ES; and S&P Emicros) contrasted against the S&P Index (SPX) - I was told this info from a market maker