The quantum computing sector has seen no shortage of hype this year, and now one of the industry's largest gatherings is set to give stocks another push.

Shares of quantum computing companies rallied in the lead-up to Quantum World Congress, an event billed as "the world's premier event uniting the global quantum ecosystem." After taking a beating this summer, the Defiance Long Pure Quantum ETF-a basket of pure-play quantum stocks anchored by IonQ, D-Wave Quantum, and Quantinuum-gained momentum ahead of the gathering.

The fund has lost 19% since its inception in early June, but its performance heading into the event suggests a shift in sentiment. Through Tuesday's close, the ETF had rallied 8.1% over the previous five days. The tech-heavy Nasdaq Composite gained 4.9% over the same period.

The ETF ticked up 0.3% on Wednesday, the inaugural day of the event, resisting a downturn in technology stocks. The driver was likely a confluence of factors: excitement around the start of the event as well as a flood of news coinciding with it. In just its fourth year, Quantum World Congress has become a major hype generator for the sector, offering companies a high-profile stage to roll out market-moving announcements.

There has been no shortage of updates. IonQ said Wednesday morning that its next-generation systems would be the first installed at Nvidia's new quantum research center, marking a deeper partnership between the two firms. Shares climbed 4.6% as sector peers broadly fell. Meanwhile, Microsoft announced late Tuesday that it is opening a research center of its own to give independent evaluators direct access to its technology.

Make no mistake: this isn't a stiff, technical summit. It's surprisingly laid back. Right past registration sits a wall of "flair" to deck out your nametag. Registration is open to virtually everyone, from researchers to curious investors and students, so long as they're willing to shell out for a ticket.

While Quantum World Congress serves as the industry's primary meeting ground, it functions largely as a promotional showcase. The main draw is the convention floor, where company representatives stand by tables, fielding questions and making the case for their unique approach to quantum computing.

For the first time, the event is being held at the University of Maryland's on-campus hotel. Now in its fourth year, the conference has always taken place near the nation's capital. With federal support ramping up this year, the location is a powerful symbol of how central quantum technology is becoming to U.S. policy.

Government officials aren't just on stage; employees from across the intelligence sector, including agents from the Federal Bureau of Investigation, are milling about the floor. The bureau's presence is hard to miss: its name is printed directly on the event lanyards, offering a vivid reminder of how closely the technology is tied to government interests.

Federal support has provided a major tailwind for quantum computing, helping legitimize the sector and transform it from a speculative bet into an actionable investment opportunity. Shares broadly rose in May after the U.S. Commerce Department pledged over $2 billion to the sector.

Several companies attending Quantum World Congress-including Rigetti, Quantinuum, and Infleqtion-now have partial government ownership after exchanging minority equity stakes in exchange for federal funding.

If this week's rally is any indication, the hype generator is working. As federal dollars derisk the technology and major partnerships validating its potential, quantum stocks are proving that behind the conference fanfare lies a sector rapidly maturing into a real investment thesis.