Here are Friday's biggest calls on Wall Street: Evercore ISI reiterates Nvidia as outperform "We continue to view NVDA as our top Tectonic Shift in Computing pick, with a full-stack ecosystem that positions it to capture 70-80% of the value created in the parallel processing era." Piper Sandler upgrades Chewy to overweight from neutral "While top line trends are likely still muted, CHWY appears to be at a profitability inflection point aided by both gross margin expansion (mix shift to higher margin revenue streams, well controlled discounting—2Q24 below last year's levels on average, according to our checks) and SG & A leverage (automation and efficiency gains)." JMP upgrades Warby Parker to market outperform from market perform "We are raising our top- and bottom-line estimates to reflect our company and industry analysis, and we see upside to shares as near-term industry volatility subsides and WRBY continues to expand its holistic vision care offering and increase in-network coverage.

" RBC Capital Markets upgrades Westlake to outperform from sector perform "We upgrade WLK to Outperform from Sector Perform on: 1) PEM earnings at trough; 2) continued strong HIP performance; and 3) strong capital deployment into M & A." JPMorgan downgrades Peloton to neutral from overweight "Following Thursday's +35% appreciation (vs. SPX -1%) we are moving from Overweight to Neutral rated as PTON's return to growth in CF Subs & Revenue remains challenging, & visibility is limited given se.