I buy low and in panics, but within limitations. I like SPY as a good investment vehicle, can't go to zero and is more than well diversified. Im too young for bonds and too conservative to trust single companies. With that said, I would like to discuss the most efficient ways to invest in SPY using dollar cost averaging. Keeping it simple and using a capital of say, 250,000, for discussion sakes, would buying 1 ES every 100 points lower and rolling over on contract expiration be a better way than doing so in SPY due to less capital committed in the account ? The SPY ETF expense ratio is .09%, the best in the business, is this lower or hgher than rolling over contracts every expiration in ES? Would love to hear some ideas here as Im planning to buy 1-2 contracts every 100 levels down. The cheaper the better, all long term of course. Ideas very much appreciated as I got some excess capital I need to put to work and bank rates plus inflation are just killing me.