Nebius Group

Nebius Group posted a standout week, its shares climbing 34% on Wednesday and ending the week up 39.1%. The surge followed the release of second‑quarter results showing revenue of $582.3 million, a 454% year‑over‑year increase that topped analysts’ consensus estimate of $572.75 million. Compass Point analyst Michael Donovan raised his price target from $260 to $300, maintaining a Buy rating and citing four large AI cloud agreements that together exceed $1 billion in contract value, which he said lift 2027 earnings expectations. Short‑seller Michael Burry, however, added to his bearish position the same day, describing the company as “what the top of a boom looks like.”

Super Micro Computer

Super Micro Computer’s stock rose 19% on Wednesday and accumulated a 33.7% gain for the week despite a fourth‑quarter revenue shortfall. The company beat earnings expectations, driven by stronger gross margins, and issued guidance that placed fiscal‑2027 revenue at $68.5 billion at the midpoint, well above Wall Street’s $54.4 billion estimate. Needham analyst N. Quinn Bolton reiterated a Buy rating with a $46 price target, noting the revenue miss stemmed from short‑term customer delays in power, cooling and networking equipment.

SanDisk

SanDisk advanced 24.5% over the week after a bullish investor‑day event in New York. J.P. Morgan upgraded the stock to Overweight and set a December 2027 price target of $2,250. Analyst Harlan Sur highlighted the company’s unique positioning to capture the structural inflection in NAND demand, driven by rapid growth in AI inference workloads.

Reddit

Reddit’s shares increased 10.7% on Friday after S&P Dow Jones Indices confirmed the company’s inclusion in the S&P 500, effective before the market open on August 18. The addition will see Reddit replace AvalonBay Communities, which is being acquired by Equity Residential, and makes Reddit only the second pure‑play social‑media company in the index after Meta Platforms.

On Holding

On Holding experienced a sharp decline, falling 20.3% on Tuesday and projected to close the week down roughly 15% after reporting a second‑quarter revenue miss and lowering its guidance. Raymond James analyst Rick Patel downgraded the stock from Strong Buy to Outperform and cut his price target from $52 to $38, citing pressure in the North America wholesale channel and low visibility around the magnitude and durability of growth. The stock was also removed from the firm’s Analyst Current Favorites list, and Baird stripped it of its Fresh Pick designation. Patel noted an EV/EBITDA multiple of about 8.5× on the revised 2027 estimates, which still imply EBITDA growth of 21% year‑over‑year, outpacing most soft‑line and branded peers.

Market Context

The week’s performance underscores strong investor enthusiasm for AI‑related hardware and memory providers, while highlighting divergent outcomes for companies facing revenue pressure or weaker guidance. The inclusion of Reddit in the S&P 500 adds a new pure‑play social‑media component to the index, potentially influencing sector weightings.