In the video above, I take a look at the Magnificent 7 as the broader U.S. indices sell off sharply. The S&P 500 is down around 4%, the Nasdaq Composite is down 5.10%, and the Nasdaq 100 is down 5.75%. All seven stocks are lower, but only two are falling more than all three indices. Those two are Nvidia and Tesla.Apple and Alphabet hold up bestApple leads the group with a decline of 1.27%, followed by Alphabet, down 1.53%. Amazon is down 2.49%, Microsoft is lower by 3.64%, and Meta is down 3.87%. All five are outperforming both Nasdaq indices, although Apple and Alphabet are doing so by a much wider margin than Microsoft and Meta.For Apple and Alphabet, the question is whether that relative strength shows up at support. Can buyers lean against a level and put in a low? If they can, the next test is whether the price can get back above the first resistance level and stay there. That would give buyers something to build on.Nvidia and Tesla see the most sellingNvidia is down 8.55%, while Tesla is the weakest of the seven with a decline of 11.19%. Both are falling considerably more than the Nasdaq 100. For those two, I’m watching what happens on a bounce. If sellers lean against a broken support level on the way back up, that old floor becomes a ceiling and keeps the downside bias intact. If the price gets back above that level and holds, sellers have lost some of their control.The levels that matter from hereOn a day like this, the size of the decline tells you where the pressure is. The technical levels give you a way to judge whether that pressure is easing or building. Does the price break support and stay below it, opening the door to the next downside target? Or does it dip below, snap back above, and force sellers to rethink the break?That distinction also helps define risk. If buyers lean against support, they have a nearby level that tells them when the trade is going against them. If sellers lean against resistance on a bounce, they have the same kind of barometer on the topside.Watch the video above for the key levels in all seven stocks, where buyers or sellers can lean, and what would shift the bias from here. This article was written by Greg Michalowski at investinglive.com.