Upcoming earnings — VICR Jul 21 · MXL Jul 23 · STX Jul 28 · WDC Jul 29 · RSI Jul 29 · BTSG Jul 31 · AMD Aug 04 · DOCN Aug 04 · SNDK Aug 05 · MKSI Aug 05 · VIAV Aug 06 · ROIV Aug 10
Seagate jumped 11% on the week — topping both the NASDAQ-100 and S&P 500 momentum leaderboards — while the entire storage complex moved in lockstep.
NASDAQ-100 and S&P 500
The same three names held the top spots across both indexes: SNDK (+9.79%), WDC (+8.09%), and STX (+11.0%). Storage is running on AI infrastructure demand — cloud buildout is driving appetite for high-capacity HDDs and NAND alike. Wells Fargo upgraded Seagate; Western Digital picked up a price-target hike.
What's interesting is how Micron got left behind. MU held rank #4 in both indexes but moved only +0.38% on the week — flat while its storage peers surged. The headlines suggest the market is starting to distinguish between memory types and supply-cycle positioning, not just grouping everything under "memory."
AMD was the week's mover inside the NASDAQ-100, jumping three spots to #5 (+7.74%). It's up 160% year-to-date and analysts are still constructive, though at least one five-star name flagged caution. Dell appeared at #5 in the S&P 500 (+10.31%), continuing to ride AI infrastructure tailwinds.
S&P 600 Small Cap
Penguin Solutions (PENG) was the blowout of the week — up 27.46%, jumping five ranks to #1. It hit a 52-week high and earnings are on deck for the week of July 13-17, so that move came with real risk attached. Rush Street Interactive (RSI) entered the rankings fresh at #5 (+5.43%), coming off a 114% rally and a new all-time high, though insider selling after a $260M offering is worth watching as context.
MXL fell three spots to #4 despite a Stifel price-target raise. When a stock drops ranks on positive analyst coverage, the price action is telling you something.
S&P 400 Mid Cap
Nothing dramatic here — the top of the leaderboard moved on modest weekly gains. VIAV jumped to #1 (up four spots, +3.41%) on AI data-center interconnect demand. Former leaders VICR and MKSI both slid three spots each; VICR was down 3.85% on the week despite being up 160% year-to-date. That kind of rank decay after a big run is a classic momentum fade signal to keep an eye on.