Daily Brief Archive: August 7, 2026 — U.S. & Hong Kong Stock Analysis

Technicals — It closed at $1,258.58, down 6.81%, yet the week is still up 10.9% — the earlier run absorbed part of the earnings expectation, making this a sell-the-news reaction rather than a collapse. Price holds above the 20-day but sits 25.8% below the 50-day ($1,695.65) and far above the 200-day ($866.93). RSI(14) at 43.1 and RSI(7) at 43.0 are both neutral-to-soft with no overbought pressure. ATR of $188.27 implies a 15.0% daily range, still the most extreme on the board. The stock is 46.5% below its June high of $2,354.39 and down 22.3% on the month.

Fundamentals — FY26 Q4 revenue reached $8.965B, up 51% sequentially and 372% year over year, with GAAP net income of $6.90B and diluted EPS of $43.97, non-GAAP EPS of $39.25 and an 84.6% gross margin — all above the top end of guidance. Full-year revenue of $20.25B grew 175%. Roughly one third of the sequential gain came from volume and two thirds from pricing. Q1 FY27 guidance calls for revenue of $10.3–10.8B, a non-GAAP gross margin of 83–85% and EPS of $44–46, alongside a new $14B buyback authorization. The pivotal change: the trailing multiple fell from 49.6x pre-print to 17.3x — driven not by the share price but by an explosion in the earnings denominator.

News — SanDisk released FY26 Q4 results after the close on 8/5, beating the high end of guidance on every metric. Yet the stock fell 6.81% on 8/6 — not because of the print but because of what Western Digital said the same day: NAND spot pricing has turned down sharply, raising concerns about memory makers' gross margins. WDC plunged 13.03% and dragged the whole chain with it. The market's logic is plain: two thirds of SanDisk's 84.6% margin came from pricing, so if NAND has peaked, that margin is a cycle-top reading rather than a run rate. Management's Q1 FY27 guidance of an 83–85% gross margin explicitly disputes that reading.

Technicals — It closed at $881.47, down just 1.31% on a day the memory chain was gutted — WDC fell 13.03% and SNDK 6.81% — and that relative strength is the most notable data point today. Price remains 9.3% below the 50-day ($971.96) and far above the 200-day ($531.67). RSI(14) at 47.9 and RSI(7) at 50.1 are both neutral. The 11.1% weekly gain is intact and the monthly decline narrowed from -14.3% to -4.5%. ATR of $84.95 implies a 9.6% daily range. The intraday span of $827.00–$905.80 was violent but the close landed in the upper half. The $800 level remains the structural line beneath my stop reference.

Fundamentals — Trailing revenue of roughly $41.46B grew 167% with EPS up 697% on a 72.6% gross margin — elite for a memory supplier — at 20.0x earnings. The key distinction from SanDisk is business mix: Micron's profit engine is DRAM and HBM, whereas today's panic concerns NAND spot pricing. Bank of America's framing is worth recording: its base case already assumes Micron's DRAM prices fall 10% and NAND 18% in calendar 2028, and even under a severe bear case it believes Micron sustains strong profitability relative to prior cycles.

News — Micron swung through a wide $827.00–$905.80 range on 8/6 before closing down 1.31%. The whole semiconductor and memory complex was under pressure: Western Digital collapsed 13.03% on a sudden drop in NAND spot pricing and elevated inventory ahead of its planned separation, while SanDisk fell 6.81% despite a large beat. The central debate has shifted from whether AI demand is real to whether hyperscalers will earn attractive returns on their enormous AI investments, and after a huge first half for memory stocks many investors are locking in gains. Bank of America reiterated its bullish stance, arguing Micron's profitability far exceeds prior cycles even under a severe pricing decline.

Technicals — It closed at $451.52, down 13.03%, with relative volume of 2.02x confirming panic selling. Price sliced 19.8% below the 50-day ($563.12) while holding 32.9% above the 200-day ($339.64). RSI(14) at 40.1 and RSI(7) at 33.6 have weakened without reaching oversold, meaning there is technically room to fall further. The stock is down 11.8% on the week and 15.2% on the month, with an ATR of $55.75 implying a 12.3% daily range, and sits 43.6% below its $799.87 high. There is no clear technical support beneath; the nearest structural level is the $400 round number.

Fundamentals — The quarter delivered EPS of $3.56 on $3.75B of revenue, beating on both lines, with trailing net income up 371.3% at a multiple of just 18.7x. But trailing revenue is down 2.7%, which exposes the problem: the earnings surge came from pricing rather than volume. Three pressures compound — a sudden drop in NAND spot pricing threatening gross margin, intensifying competition, and high inventory ahead of the planned business separation. The company beat and cut guidance in the same breath, the combination markets tolerate least.

News — Western Digital's 13.03% plunge on 8/6 was the epicenter of the day's memory selloff. The company beat on both sales and earnings yet cut guidance, and the reason it gave was industry-wide: a sudden downturn in NAND spot pricing, compounded by intensifying competition and elevated inventory ahead of the business separation, all threatening gross margin. The damage far exceeded the company itself — it dragged SanDisk (-6.81%) and Micron (-1.31%) down the same day, even though SanDisk had just posted 372% revenue growth at an 84.6% gross margin. Today's pricing logic across the entire memory chain was rewritten by that single line from Western Digital.

Technicals — It closed at $218.99, down 0.10%, essentially unmoved on a day the memory chain was gutted and semis broadly struggled — among the strongest relative showings today. Price sits well above the 50-day ($205.85) and 200-day ($193.77) in a complete bullish stack. RSI(14) at 61.4 is healthily firm with RSI(7) at 71.2 warm but manageable. Weekly and monthly gains of 13.2% and 13.8% leave it just 7.4% below the $236.54 high. ATR of $7.79 implies a 3.6% daily range, among the mildest of today's deep dives — a number that by itself explains the difference in holding experience.

Fundamentals — Trailing revenue grew 70.7% and EPS 110.3% on a 74.1% gross margin at 33.5x earnings — an unusually good growth-to-valuation match at a $5.3T market capitalization. Sixty-four analysts carry a 1.12 rating near strong buy with an average target of $314.29 implying 43.5% upside, the most unified bullish consensus among megacap tech. The market's emerging doubt about hyperscaler returns on AI capex is in theory Nvidia's largest long-term risk, yet in the near term it remains the direct recipient of that spending.

News — Nvidia finished essentially flat on 8/6, down 0.10%, showing marked resilience amid a broad tech and semiconductor selloff. Two pressures drove the sector: the NAND pricing panic triggered by Western Digital that dragged the memory chain, and a newly concentrated doubt over whether hyperscalers can earn attractive returns on their enormous AI investments — the first systematic challenge to the entire AI capex narrative. Headlines around Samsung and China's DeepSeek added further noise. Against that backdrop, Nvidia's flat close shows the market still prices it apart from the memory makers.

Technicals — It closed at $114.92, up 6.14%, on relative volume of 2.93x — a high-volume advance on lockup day, the opposite of what the market broadly expected. The name still lacks 50-day and 200-day references, leaving the $104.83–$225.64 52-week range as the only anchor, with price 9.6% above the low and 49.1% below the high. RSI(14) at 42.5 and RSI(7) at 46.2 are both neutral. The week is down just 0.2% while the month is down 27.7%. ATR of $11.10 implies a 9.7% daily range. Technical analysis here remains constrained by the absence of moving-average structure.

Fundamentals — Q2 revenue of $7.81B grew 92% and beat estimates, but quarterly capital expenditure of roughly $18.4B ran at 2.4x revenue. The company is now a three-segment enterprise spanning space, connectivity and AI following the February 2026 integration of xAI and X, at a market capitalization near $1.51T. There is still no P/E or gross margin available for cross-checking, making it the least financially transparent name in today's deep dives. The $227.09 consensus target implies 97.6% upside, the highest on the board — but that figure rests on an extremely thin base of verifiable financials.

News — August 6 was SpaceX's first major post-listing lockup expiration — the foreseeable supply shock I named explicitly in the two prior briefs. The outcome inverted the expectation: the stock rose 6.14% on relative volume of 2.93x. The maiden report after the close on 8/4 had knocked it as much as 8.8% postmarket on $18.4B of quarterly capex, but that damage was largely repaired within two sessions. Two things follow: the market had priced lockup selling fully, arguably excessively, in advance; and the 92% revenue growth narrative still finds buyers. The question of payback on that capex isn't resolved — merely deferred.