It is options expiration week this week.
Options expiration weeks often have a bullish tendency. You can see it broken down by month in this post from March. But the summer months of June, July, & August have not seen that same bullish tendency.
August’s performance has actually been net negative. June is the only other negative month. Below is a look at the profit curve for August.
Very inconsistent, and worse lately. Opex in August has not shown the typical opex week bullish tendency.