The problem with one big "tech" bucket
The standard sector schemes put very different businesses in one box called Information Technology, and file companies most investors think of as tech somewhere else.
These schemes were built for a market where software, hardware and services were small, distinct corners. In 2026 the largest flows of capital run through a chain of very different businesses: chip equipment, silicon, memory, networking, power, compute capacity and software. One bucket cannot show which link in that chain money is moving to.
Why it matters when you read volume
Infinity measures where money trades: dollar volume, and how heavy it is against each company's and each sector's own normal. A sector view is only as useful as the sector it measures.
Put chips and software in one bucket, and their opposite moves cancel out:
Split them correctly, and the same day shows exactly where activity concentrated. So the question we start from isn't "what sector does the index provider say this is?" but "what does this company actually earn its money from?"
What we do instead
We built our own taxonomy of 29 sectors around how capital moves today. It is deliberately uneven: where the market's attention is split finely, so are we, and where businesses behave alike, we keep them together. The AI build-out alone gets separate sectors for compute silicon, memory and storage, chip equipment and foundries, networking and optics, and compute capacity, while banks of every size share one sector.
A company isn't forced into a single box either. When its businesses fall into different sectors, it carries each of them, weighted by the revenue each one brings in. Its trading volume is then divided across those sectors in the same proportions, so a sector's total reflects the businesses actually in it.
Eight companies that one standard scheme files together under Information Technology sit in eight different Infinity sectors.
The work behind every label
A sector label is a claim about a company, and we treat it like one. Every company we classify goes through the same steps, and we repeat them as new filings arrive.
1. We start from the company's own filing. The sector rests on an exact quote from the annual report, 10-K, 20-F or securities report, with a link. The quote must survive a word-for-word search of the document it cites.
2. We match companies by identifier, not by name. Two separately listed Chinese companies called Shengyi make different products. We confirm each company from its securities code and the cover of its own filing.
3. We map the segments, then measure. If one sector reaches 50% of revenue, the company sits there. If not, it carries a mix, with weights taken from the filing's segment table, never estimated.
4. We allocate the volume. Those weights decide how much of a company's daily dollar volume counts toward each sector, which feeds every sector total and insight.
5. We resolve conflicts with evidence. CBRE is widely seen as a property company, but its segment table puts 76% of revenue in building operations and project management, so it sits in Industrial. Filings have overturned our first reading of Hitachi, Recruit, Mitsubishi Corporation and CATL.
6. We record every precedent and recheck as filings arrive. Brand owners go to Consumer Staples & Brands however they sell; resellers go to Commerce; mortgage REIT s to Banking. Each new annual report is a chance to re-measure, and companies in visible transition are flagged for their next filing.
Better inputs, better insights
Every sector insight on Infinity compares a sector's dollar volume with its own last 20 sessions and its last 250. If a company is in the wrong sector, its volume lands in the wrong total, and the insight describes a move that didn't happen. Getting the label right is what makes the insight worth reading.
That's why most of our work happens before any number reaches the page. The market data is the same data everyone can buy. The labels, the weights and the evidence behind them are what we add.
Open the Sectors page to see the taxonomy at work across 13 markets, and any company page to see which sectors it carries.