When News Hits One Company, Should You Look Upstream or Downstream?
September 14, 2026
Altsets
Research by Altsets Research
Look upstream when the news changes customer demand or purchasing. Look downstream when the news changes supplier availability, capacity, cost, or production capability.
Data used:Altsets Supply Chain Intelligence: 90k+ entities, 400k+ relationships, 20+ years of history.
Key findings
- The supplied Nvidia relationships with Micron and SK Hynix illustrate upstream demand readthrough, while the supplied ASML-Micron relationship illustrates downstream supplier and capacity exposure.
- Research on supply-chain spillovers distinguishes customer-demand transmission upstream from supplier-health transmission downstream, giving relationship direction a direct role in event analysis.
Look upstream when the news changes demand. Look downstream when the news changes supply, capacity, cost, or availability. Customer demand information can matter to suppliers that sell into that customer, while supplier disruptions can matter to customers that depend on the supplier's inputs.
Nvidia demand news points upstream toward suppliers
The supplied Altsets data shows Nvidia as a major customer of Micron and SK Hynix. Nvidia represents 17.62% of Micron revenue and 27.88% of SK Hynix revenue in the displayed relationships. If Nvidia reports a material change in AI demand, purchasing, or product volumes, those suppliers have an economic reason to enter the research queue.
That does not mean both supplier stocks should move in the same direction or by an amount proportional to the revenue percentages. Product mix, expectations, capacity, pricing, and supplier share all matter. The relationship tells the investor where downstream demand can plausibly travel upstream through the network.
ASML supply news points downstream toward customers
The supplied Altsets data also shows ASML supplying Micron. ASML represents 11.91% of Micron's cost base in the displayed relationship, while Micron represents 7.64% of ASML revenue and the relationship size is 3B USD. If the new information concerns ASML equipment availability, production capacity, export restrictions, or delivery timing, the natural research direction runs downstream toward customers such as Micron.
Micron has publicly warned that certain key equipment, including photolithography tools, can sometimes depend on a single supplier. That does not identify every ASML relationship detail from the filing, but it shows why upstream equipment availability can become an operational issue for semiconductor manufacturers.
The event type matters more than the ticker that moved first
One company can generate both upstream and downstream research depending on the news. Strong customer demand can benefit suppliers upstream. A supplier production failure can hurt customers downstream. A price increase can improve supplier economics while pressuring customer margins. A technology breakthrough can strengthen both sides if it enables higher-value production.
Recent market research on supply-chain spillovers makes the same directional distinction. Customer performance can transmit demand information upstream, while supplier health can transmit capacity and execution information downstream. The graph is useful because it tells the investor which direction the commercial relationship actually runs.
Start direct before moving to second-order paths
After identifying the event direction, begin with first-degree relationships. If Nvidia demand changes, start with direct suppliers. If ASML availability changes, start with direct customers. Only then consider companies one more hop away, and do not multiply directional percentages through the network as though they were transmission coefficients.
This keeps the analysis disciplined. A large graph can always produce a distant path between companies, but the further the event travels, the more additional assumptions are required about products, substitution, inventory, and timing.
The conclusion is that event direction determines research direction
When news hits one company, demand and purchasing news usually sends the investor upstream toward suppliers, while supply, capacity, and input news usually sends the investor downstream toward customers. Supply-chain data makes that distinction explicit instead of treating every related stock as a generic sympathy trade.
The event-trade versus sympathy-trade guide explains why documented transmission paths differ from thematic correlation. The earnings watchlist guide shows how to turn a reporting company into a focused list of connected stocks.
For relationship definitions and evidence limits, read the Altsets methodology.