I'm trying to wrap my head around how pricing is affected between index futures, the ETF that is supposed to represent the Index, the Index, the stocks in the Index, and all of the options trading that occurs between all four.
For example, if we look at the ES futures, ES Futures options, SPX Options, shares of SPY, options for SPY, and the shares and options for all the stocks in the S&P 500, how is there a correlation in how price moves? If there's a huge SPX put buyer, how is that going to directly affect the market and how pricing and trading works on everything associated with it? Then if there's a huge call SPY call buyer, how does that balance out everything else that is going on?
How does a large option trade affect the price of the underlying? If there's a huge buyer of calls or puts in a stock or ETF, how does that directly affect the underlying price of the stock or ETF? I would think that pricing of the stock or ETF would be more directly affected by the big institutions that are trading shares of the stock or ETF, and not so much by the options trading. I would think that the option shouldn't affect the price of the underlying that much until the option buyer exercises the option to buy or sell the shares of the underlying.
Hopefully my question makes sense, and someone has some input to make sense of what I'm asking.
Thanks