Newsletter · · Ashutosh Agarwal

Chips Melt Up as the Broad Tape Melts Down With Everyone Waiting on Powell - Daily Market Wrap - Monday, August 17, 2026

The session of Monday, August 17, 2026: a handful of AI-hardware names went vertical while the broad market drifted lower, Charter's refinancing shock sank Communication Services, and with Jackson Hole days away and the 10-year near 4.73%, investors mostly stayed on their hands.

Daily Market Wrap

Monday, August 17, 2026: Chips Melt Up as the Broad Tape Melts Down With Everyone Waiting on Powell

A handful of AI-hardware names went vertical while the broad market drifted lower. Charter's debt shock sank Communication Services, and with Jackson Hole days away, investors mostly stayed on their hands.

Monday, August 17, 2026

The Tape at a Glance

It was a red day almost everywhere except where it mattered most for the AI story. The major indexes gave back a little ground after three straight up weeks, while a narrow slice of chip and networking stocks ripped higher.

  • S&P 500: 7,746.97, -0.50% (down 38.79 points)
  • Nasdaq Composite: 26,646.74, -0.31%
  • Nasdaq 100: 29,995.38, -0.17%
  • Dow Jones Industrial Average: 53,459.78, -0.51% (down 272.63 points)
  • Russell 2000 (small caps): 3,057.54, -0.35%
  • VIX (the "fear gauge", where higher means investors are paying up for protection): 15.19, +6.6%, though still low by historical standards
  • 10-year Treasury yield: around 4.73%, up roughly 3 basis points (a basis point is one-hundredth of a percentage point), a second straight day of rising yields

Best sectors: Industrials +1.1%, Health Care +0.9%, Energy +0.8%. Worst sectors: Communication Services -2.2%, Financial Services -0.9%, Consumer Cyclical -0.6%.

That split, cyclicals and defensives up, mega-cap media and tech down, is the tell of the day: money rotated out of the crowded winners and into everything else.

Big Story 1: A Furious Melt-Up in the Plumbing of AI, While the Rest of Tech Sagged

What happened. A cluster of AI-hardware names went vertical even as the Nasdaq slipped. Cerebras Systems (CBRS), the startup that makes dinner-plate-sized AI chips, jumped +15.1% to $251.98. The optical-networking and connector crowd that wires AI data centers together came right behind it: Semtech (SMTC) +9.9%, Sandisk (SNDK) +8.9%, Credo Technology (CRDO) +8.8%, Coherent (COHR) +7.8%, Vicor (VICR) +8.0%, Viavi Solutions (VIAV) +6.3%, and chip-inspection maker Onto Innovation (ONTO) +5.9%.

Why it happened. Two threads pulled the group higher:

  • A supply-chain "green light." A widely-read note from Mizuho pointed to strong production checks around NVIDIA's next-generation VR200/Spectrum-X systems and a projected 75%-plus expansion in advanced chip-packaging capacity for 2027. That set off an "interconnect and optical bottleneck" trade, the bet that whoever supplies the cables, connectors, and optics inside AI clusters will be swamped with orders.
  • Stock-specific fuel. Wedbush's Matt Bryson spelled out that Cerebras is the exclusive compute engine behind OpenAI's new ultra-fast GPT-5.6 mode, with OpenAI committing to buy 750 megawatts of capacity through 2028 (part of a reported $25.4 billion backlog), and lifted his target to $290. Rosenblatt took Coherent to a Street-high $500, arguing 2027 optical capacity is "effectively sold out." Goldman Sachs' James Schneider started Onto at Buy ($400). And filings revealed heavyweight buyers, Tiger Global, Ken Griffin's Citadel, and Cathie Wood's ARK, piling into Cerebras on its recent post-earnings dip.

What people said. This is where it gets interesting: the pros are openly split on whether this trade has legs.

On the bull side, Ben Reitzes, head of tech research at Melius, made the case on Squawk on the Street (Aug 14) that the memory business has fundamentally changed, with customers now locking in multi-year supply contracts instead of haggling every quarter:

AI has really changed the game… the largest customers are actually going back to folks like Sandisk and Micron saying, you know what? Let's sign up for these contracts… We cannot be caught short.

He even brushed off the worry that cheaper AI usage kills demand, invoking "Jevon's Paradox," the idea that when something gets cheaper, people use so much more of it that total demand rises: "usage is actually exploding as token prices go down."

The bears aren't buying the durability. On The Real Eisman Playbook (Aug 17), Steve Eisman, the investor made famous by The Big Short, said he's fixated on whether the giant cloud companies can actually pay for all this:

I am worried about the cash flow… there is a big bet, really, on whether the cash flow is going to come through. And the cash flow of the hyperscalers over the next couple of years looks like it's going to be negative.

His numbers: Meta generated just $785 million of quarterly cash flow, Microsoft's fell about 25% year-over-year, and Amazon's was negative over the past 12 months, even as all of them promise to spend more. Eisman stopped short of betting against tech ("I wouldn't short it, we're market weight technology"), but questioned "whether that can provide an appropriate return for the shareholders."

And on the RiskReversal podcast (Aug 12), Dan Nathan was blunter, mocking the wave of vendor-financed AI deals as "collateralized chip obligations," a nod to the toxic products of 2008:

this is about as close to the top… because these companies, they can't raise any more equity. They can't raise any more debt.

His co-host Guy Adami flagged a subtler warning sign: the shrinking market reaction to each new AI mega-deal. Six months ago, he said, an announcement like this "would have gotten the market up two and a half percent," and "now you're just not seeing it."

Big Story 2: Charter's Debt Shock Drags Communication Services to Worst in Market

What happened. Communication Services was the day's worst sector by a wide margin, down 2.2%. The anchor was Charter Communications (CHTR), which fell -6.6% to $144.10, dragging its parent vehicle Liberty Broadband (LBRDK) down more than 5% with it. Mega-cap media names added to the weight, with Meta and Netflix both notably lower.

Why it happened. Charter refinanced a slug of its enormous debt load last week, and investors did the math on the new interest bill. On August 12 the company swapped old notes into $3.31 billion of new senior secured notes at fixed coupons of 7.087% and 7.337%, replacing debt that had carried rates as low as 2.25%. On a $90 billion-plus debt pile, that step-up in interest costs is a real hit, and it lands on a business already losing broadband customers (172,000 in Q2, with revenue down 1.7% year-over-year to $13.5 billion). Wall Street reacted hard: UBS slashed its price target to $140 from $235, and RBC trimmed to $150, with Bank of America, Bernstein, and JPMorgan also cutting.

Layered on top was broad profit-taking in the mega-cap "AI-adjacent" names ahead of Jackson Hole, the same rotation showing up in the sector table. Meta (down roughly 4%) is still digesting a rare earnings miss and its ballooning AI capital-spending plans; Netflix (down around 3%) faces questions about slowing growth even after Bill Ackman's Pershing Square disclosed re-entering the stock.

What people said. The reaction here is being driven by analyst actions rather than fresh management commentary, so the cleanest read is Wall Street's rapid re-rating of Charter's value in a world of higher-for-longer rates and stubborn cord-cutting. UBS's near-40% target cut tells you how sharply the interest-cost story changed the math.

Big Story 3: Markets Mark Time Before Powell's Jackson Hole Speech

What happened. For all the single-stock fireworks, the index-level story was caution. Stocks drifted, the VIX popped 6.6%, and Treasury yields kept grinding higher, with the 10-year near 4.73%, close to its highs for the year.

Why it happened. Investors are positioning ahead of the Kansas City Fed's Jackson Hole symposium later this week, where Chair Jerome Powell gives a keynote that could set the tone for the September rate decision. Two data points Monday leaned firm, giving the "no rush to cut rates" camp fresh ammunition:

  • The Empire State manufacturing survey (a monthly gauge of factory activity in New York) surged to 20.6, its fastest pace in over four years and far above the ~10–12 economists expected. But its "prices paid" index jumped 6.3 points to 58.6, a reminder that input costs are heating back up.
  • Homebuilder confidence (the NAHB index) ticked up to 35, a touch better than expected but still deeply depressed.

Yields also faced pressure from a wave of new corporate bond issuance and lingering worries about the federal deficit, supply-and-demand mechanics, not just Fed expectations.

What people said. With no Fed officials on the calendar Monday, the named voices came from the data itself. The New York Fed's Richard Deitz flagged the double edge of the factory rebound:

New York State manufacturing activity increased at its fastest pace in over four years in August… However, delivery times were substantially longer and supply availability continued to worsen.

And the NAHB's chief economist Robert Dietz kept the housing read sober:

August marked the 16th straight month that at least 30% of builders reported cutting prices to support demand, as well as the 16th consecutive month with the [confidence index] below 40.

Quick Hits

  • argenx (ARGX) +16.0%, the day's biggest large-cap gainer. Its Phase 3 ALKIVIA trial of efgartigimod hit its primary goal in myositis (a muscle-inflammation disease), though one patient subtype missed statistical significance.
  • Comfort Systems USA (FIX) +6.0%, the quiet AI winner nobody talks about: it builds the cooling and electrical guts of data centers. Q2 earnings of $12.53 crushed the $10.45 estimate, revenue jumped 50% to $3.27 billion, backlog hit a record $8.1 billion, and it raised its dividend. Zacks upgraded it to Strong Buy.
  • H World (HTHT) +11.3%, the Chinese hotel operator beat on Q2 and raised its full-year revenue growth guidance to 4–8%.
  • Reddit (RDDT) -7.7%, fell despite a Raymond James target hike to $205, as investors fixated on the risk that Google's "AI Overviews" siphon search traffic away from Reddit's US users.
  • Carvana (CVNA) -7.25%, gave back gains in what looks like profit-taking after last week's refinancing-driven rally; no fresh negative catalyst surfaced.
  • Constellation Brands (STZ) -6.2%, Warren Buffett's Berkshire Hathaway fully exited its stake, per its latest filing, on top of ongoing worries about tariffs and beer-margin pressure.
  • Semtech (SMTC) sold its non-core cellular-module unit to Compal for $62 million, sharpening its focus on AI data-center optics; Stifel reiterated Buy.
  • Memory bulls got louder. Sandisk CEO David Gethmark used his investor day to pitch a less-cyclical "new business model" built on multi-year customer commitments, the shift Ben Reitzes was cheering.
  • M&A was quiet. No major US deal was announced; Semtech's $62 million divestiture was the most market-relevant transaction of the day.