Oct
5
Futures Settlement Price vs Closing Price and Subsequent Returns in a Volatile Environment? from Paul Marino
October 5, 2016 |
Can anyone point me to research regarding Futures settlement price vs closing price and subsequent returns in a volatile market environment? I would like to see if settlement is more important (due to margin) during periods of high volatility which I foresee over the next few weeks. I'll try some back of the envelope tests over the weekend.
Bill Rafter writes:
We have tested many possible prices for importance with regard to generating signals (e.g. momentum, sentiment, etc.). In reality the only price you can guarantee for testing execution in retrospect is the settlement (subject to slippage), followed by the opening (greater slippage). But for signal-generating capability we tested highs, lows, midranges, etc. We also tested subsets, such as the ability of using lows to indicate up/down, vs. highs to indicate up/down. Nothing beats the settlement. Specific to your question, if the settlement differs from the last sale, take the settlement. "There's a reason why it is the settlement."
With regard to stocks we also tried VWAP. Same conclusion.
We also tested to see if the futures settlement influenced cash, or the opposite. In virtually all cases the futures dictated to cash. That conclusion suggests that cash can be manipulated by some clever futures transactions, which of course has happened. Certain markets were famous for it (eggs comes to mind). Anyone who has ever manipulated a market will tell you that you wait until the end of the day and pick your spots (i.e. low liquidity).
If however you are doing some "fuzzy" work, you might explore using something other than the settlement or close. That is, suppose you just needed a qualification as to whether a market was "up" or "down", without regard to actual changes. Consider the following: "The market was up all day, but closed slightly lower." Was it up or down and how do you code for that? This is not esoteric BS; it makes a difference.
The above is the benefit of our own testing. I am not aware of any academic work in this area. It seems too mundane a topic. A cash v. futures settlement thesis might be interesting but the conclusion would be anti-flexion and we know how that would be perceived.
Larry Williams writes:
Hold on…
In reality data providers have something they call the closing price. That's what we get when the market closes and that stays in our data until about an hour and a half, sometimes two hours, after the markets open in the afternoon when they change the closing price to the settlement price.
You have to be very careful because there can be a wide difference between the closing price and the settlement price. Unfortunately we don't have the settlement price until after the market is open when we have already begun trading. So most trading systems are developed using the official settlement price because that's what is in the historic data but for signal tonight after the market closed we don't get the settlement price until after trading has begun.
Whoever said the life of a trader is an easy one did not look into closing prices.
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