This is divided into many situations, such as news stimulation (cpi release, etc. ), are generally made of large-cap stocks. Sometimes there is no reason, just small fluctuations in the general trend, depending on the trend.
What does it mean for the market on that day or the next trading day? Or what is the impact on the market trend?
What does this rise and fall at the beginning of the week and at the weekend mean?
That doesn't mean anything. Very normal performance. It is suggested that the landlord should not entangle these things too much, look farther and see the trend of higher cycle level. There is no point in spending too much energy on these things.