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Stats › Intraday en marktmicrostructuur › Futures and cash

The cash index was mechanically stale for twelve minutes, and nobody has measured the lead

MaatstafDaily low on 24 August 2015Opmerking
S&P 500 cash indexA little more than 5% down at 09:35Carried 21 August closes for stocks not yet open
S&P 500 fund7.8% down at 09:35Opened 5.2% down, closed 4.2% down
E-mini futureAt its 7% limitHad halted pre-open at the tighter band
Fund net asset value from last sale prices8% downComputed, not traded
A second S&P 500 fundMeer dan 20% below the prior closeTraded at a large discount until about 09:43

Daily lows on the morning of 24 August 2015, against the 21 August close. The cash index stayed well above the futures, the fund and the fund's net asset value until about 09:42 or 09:43, which the regulator attributes to the index provider's pricing method using prior closes for constituents that had not yet opened.

On the morning of 24 August 2015 the cash index stayed well above the futures, the fund and its net asset value for about twelve minutes, because the index was still carrying the prior day's closing prices for stocks that had not yet opened.

About 12 minutesHow long the cash index stayed above every other measure
5.2% against 7.8%Index daily decline against the fund's daily low
-8%Net asset value computed from last sale prices
None locatedPublished information share estimates for futures against cash

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