At some point last week, US stocks were pushed to the limit. But once again, it is a case of bend but don't break as key technical levels hold. And even as oil prices are holding up, we're starting to see dip buyers come in to push equities back up this week.With S&P 500 futures up 0.5% currently, Wall Street looks poised for three consecutive days of gains now. That follows from back-to-back daily gains secured yesterday, the first since the end of February.Despite the negative mood from the first two weeks of the US-Iran conflict, things weren't that bad for US stocks. That at least what one can take away from looking at the charts. The same levels that were stressed upon last week here continue to be ones that are in play this week:As highlighted last week already:"Sure, the upside momentum has been taken away. The Nasdaq already saw that in February on a break of its 100-day moving average (red line). And the latest developments in the Middle East is even seeing a run at the October and November lows, with a test of the 200-day moving average (blue line) as well. That is now the key line in the sand for tech shares. A firm break below that level and the 22,000 mark will set off another big wave of selling. And that could be where the real correction starts for US stocks and big tech in general. The flip of the double top pattern at 24,000 could indicate a reversal back towards the 20,000 mark. That is roughly another 12% drop from where we are now, which will be a significant retracement at least. As for the S&P 500, the war has seen the index break back under its own 100-day moving average (red line) for the first time since May last year. That in itself points to a material shift in the momentum in Wall Street. But just like the Nasdaq, we're not seeing any further breakdown in the charts just yet. The 200-day moving average (blue line) at around 6,596 is the next crucial point before the October and November lows come in around 6,525-50 next."There you go. Another case of bend but don't break, something we're getting quite accustomed to with US stocks more often than not.We'll see how the momentum carries over through the week. Be mindful that there is still the Fed and other major central bank meetings to watch out for too. That alongside further US-Iran developments, as there isn't an end in sight to the conflict just yet. Even if markets are keeping calmer now, the jitters will surely come back in the longer the Strait of Hormuz remains out of commission. This article was written by Justin Low at investinglive.com.