As corporate debt markets continue to grow in importance, it will become crucial for investors and regulators to understand the nuanced factors influencing their liquidity. Photo via Getty Images

At the end of every quarter, publicly traded companies announce their profits and losses in an earnings report. These updates provide insight into a company’s performance and, in theory, give investors and shareholders clarity on whether to buy, sell or hold. If earnings are good, the stock price may soar. If they’re down, the price might plunge.

However, the implications for the stock price may not be immediately clear to all investors. In the face of this uncertainty, sellers will ask for high prices, and buyers will offer low ones, creating a significant “bid-ask spread.” When this happens, it becomes more costly to trade, and the stock becomes less liquid.

This is a well-documented effect on equity stock markets. However, according to research by Stefan Huber (Rice Business), Chongho Kim (Seoul National University) and Edward M. Watts (Yale SOM), the corporate bond market responds differently to earnings news. This is because bond markets differ from stock markets in a significant way.

Stocks v. Bonds: What Happens When Earnings Are Announced?

Equities are usually traded on centralized exchanges (e.g., New York Stock Exchange). The exchange automatically queues up buyers and sellers according to the quote they’ve entered. Trades are executed electronically, and the parties involved are typically anonymous. A prospective buyer might purchase Microsoft shares from someone drawing down their 401(k) — or they could be buying from Bill Gates himself.

Corporate bond markets work differently. They are “over-the-counter” (OTC) markets, meaning a buyer or seller needs to find a counterparty to trade with. This involves getting quotes from and negotiating with potential counterparties. This is an inherent friction in bond trading that results in much higher costs of trading in the form of wider bid-ask spreads.

Here’s what Huber and his colleagues learned from the research: Earnings announcements prompt many investors to trade. And on OTC markets, potential buyers and sellers become easier to find and negotiate with.

A Stronger Bargaining Position for Bonds

According to Huber, “When earnings information comes out, a lot of people want to trade. In bond markets, that makes it much easier to find someone to trade with. The more options you have to trade, the stronger your bargaining position becomes, and the lower your trading costs go.”

He compares the process to shopping in a market with a flexible approach to pricing.

“Let's say you're at a farmers market and you want to buy an apple,” Huber says. “If there is only one seller, you buy the apple from that person. They can ask for whatever price they want. But if there are multiple sellers, you can ask around, and there is potential to get a better price. The price you get depends on the number of options you have in trading partners.”

What’s at Stake?

Although bonds receive less attention than equities, the stakes are high. There is about $10 trillion in outstanding corporate debt in the U.S., and more than $34 billion in average daily trading volume.

A detailed record of bond trades is available from the Financial Industry Regulatory Authority (FINRA), which requires that trades be reported via their Trade Reporting and Compliance Engine (TRACE).

The study from Huber and co-authors uses an enhanced version of TRACE to examine trades executed between 2002 and 2020. The team analyzed the thirty-day periods before and after earnings announcements to gather data about volume, bid-ask spreads and other measures of liquidity.

They find that, like on the stock market, there are more investors and broker-dealers trading bonds around earnings announcements. However, unlike on the stock market, transaction costs for bonds decrease by 6 to 7 percent in the form of bid-ask spreads.

What Sets This Research Apart?

“Taking a purely information asymmetry-based view would predict that what happens to stock liquidity would also happen to bonds,” Huber says. “A piece of information drops, and some people are better able to work with it, so others price protect, and bid-ask spreads and the cost of trading go up.”

“But if you consider the search and bargaining frictions in bond markets, you get a more nuanced picture. While information asymmetry increases, like it does on stock markets, the information prompts more investors into bond trading, which makes it easier to find counterparties and get better transaction prices. Consequently, bid-ask spreads go down. This search and bargaining friction does not really exist on equities exchanges. But we cannot ignore it in OTC markets.”

As corporate debt markets continue to grow in importance, it will become crucial for investors and regulators to understand the nuanced factors influencing their liquidity. This study provides a solid foundation for future research.

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This article originally ran on Rice Business Wisdom. For more, see “Earnings News and Over-the-Counter Markets.” Journal of Accounting Research 62.2 (2024): 701-35.

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Digital Health Institute's new exec director aims to lead innovation and commercialization efforts

new hire

Though our existences have become deeply entangled with technology, our health has been slower to catch up. The creation late last year of the Digital Health Institute was a major step into the future for both Rice University and Houston Methodist, for whom the institute is a joint venture.

The latest news for the Digital Health Institute is the appointment of Pothik Chatterjee to the role of executive director.

“The Digital Health Institute’s collaborative model is uniquely powerful,” Chatterjee told Rice University’s office of media relations. “By bringing together clinicians, engineers and entrepreneurs, we’re building an ecosystem designed to transform how care is delivered and experienced.”

Chatterjee’s role is to help grow the collaboration between the institutions, but the Digital Health Institute already boasts more than 20 active projects, each of which pairs Rice faculty and Methodist clinicians.

“Research is great, but what we really want at the Digital Health Institute is to translate those research findings into products and services that can be used at the patient's bedside,” Chatterjee explained to InnovationMap.

Once the research is in place, it’s up to Chatterjee to find commercial opportunities within the research portfolio. Those include everything from hospital-grade medical imaging wearables to the creation of digital twins for patients to help better treat them.

“As we move from vision to execution, Pothik’s expertise will be essential in helping us strengthen the institutional alignment needed to deliver at scale,” Dr. Khurram Nasir, Methodist’s William A. Zoghbi Centennial Chair in Cardiovascular Medicine and division chief of cardiovascular prevention and wellness, told Rice. “From my vantage point of a health system, the real value lies not just in innovation, but in implementation.”

Nasir’s co-founder is Ashutosh Sabharwal, Rice’s Ernest Dell Butcher Professor of Engineering and professor of electrical and computer engineering.

“The Digital Health Institute is a key step toward advancing health and health care for the benefit of humanity,” Sabharwal said. “We’re thrilled to welcome Pothik to our growing team. His background in health care innovation, research administration and venture investing will be instrumental in translating cutting-edge research into impactful digital health solutions. From leading innovation strategy and forging strong partnerships to driving fundraising and grant development, his leadership will help shape the institute’s long-term success.”

Though Chatterjee has previously worked around the country, including in Boston and Baltimore, he says he believes Houston is uniquely positioned to thrive in the digital health space.

“Houston is the best place to do it, because we have Rice and Houston Methodist,” he told InnovationMap. “[People] want to help keep that innovation in Houston, not just send it off to Silicon Valley or New York or Boston. There seems to be a lot of appetite from the philanthropic community to have homegrown Houston digital health innovation.”

Reliant’s smart new bundle puts energy savings + insights into one app

Two companies known for innovation in energy and home automation, Reliant and Vivint, have teamed up to launch the Smarter Home Bundle: a powerful new offering that simplifies home energy management and enhances everyday living for Texans.

With smart technology, seamless app integration, and added energy savings, this bundle marks a major leap forward in how homeowners manage their comfort, security, and electricity usage.

What’s included in the Smarter Home Bundle?
Qualifying current and new Reliant electricity customers can take advantage of this premium bundle, which includes:

  • A free Vivint Doorbell Camera Pro with Smart Deter™ technology that detects deliveries and deters theft
  • A free Vivint Smart Thermostat, designed to integrate with HVAC systems for efficient temperature control
  • White-glove professional installation from Vivint Smart Home Pros
  • Access to an exclusive Vivint app experience, combining smart device controls and personalized energy insights powered by Reliant

All this is included at no additional cost with enrollment in the Smarter Home Bundle.

 Reliant Smarter Home Bundle Let the pros handle installation.Photo courtesy of Reliant

A unified, smarter home

Reliant and Vivint, both NRG companies, are offering the Smarter Home Bundle as an all-in-one solution for customers looking to streamline home management. By combining smart home security features with advanced energy tools, users gain greater control, comfort, and peace of mind. With one app, customers can monitor their home, manage devices, and track energy use — anytime, anywhere.

According to recent NRG Consumer research, nearly 70% of people want a single platform to manage their smart homes. The Vivint app, which averages 16 daily interactions, delivers exactly that.

Designed for savings and simplicity
Energy efficiency isn’t just a buzzword — it’s a key feature of the Smarter Home Bundle. As more households adopt smart devices (45% in 2024, up from 10% a decade ago), this bundle gives users tools that help cut energy use and potentially lower bills. In fact, 72% of surveyed users cite savings as the top benefit of smart home technology after safety.

The Vivint Smart Thermostat plays a major role here. It not only learns users' habits but also integrates with Reliant’s Degrees of Difference program, adjusting temperatures slightly during peak electricity demand. These small changes can have a big impact on grid stability — especially in hot Texas summers — without sacrificing comfort. Customers remain in control at all times and can override temperature changes in the app or manually if needed.

 Reliant Smarter Home Bundle Manage everything with one app.Graphic courtesy of Reliant

Powering the future with virtual power plants
The Smarter Home Bundle also contributes to Reliant’s growing residential virtual power plant (VPP) network. VPPs are a forward-thinking approach to grid management that leverage small-scale energy resources — like smart thermostats, home batteries, and electric vehicles — to balance electricity demand across thousands of homes.

With Texas experiencing record-high energy loads (85 gigwatts in 2023), this kind of coordination is critical to ensuring a stable and reliable power grid, especially during extreme weather events.

“By bringing together innovative leaders like Reliant and Vivint, we are providing smarter, more efficient energy solutions for Texans,” says Mark Parsons, senior vice president, NRG Consumer. “The Reliant Smarter Home Bundle combines our electricity plans with advanced technology, empowering Texans to take control of their energy usage and simplify home management. We are excited to roll out additional features in the coming months at no cost, all designed to help our customers manage their home’s comfort, security, and energy usage, all in one place.”

Learn more and enroll here.

Houston startups win NASA funding for space tech projects

fresh funding

Three Houston startups were granted awards from NASA this month to develop new technologies for the space agency.

The companies are among nearly 300 recipients that received a total agency investment of $44.85 million through the Small Business Innovation Research (SBIR) and Small Business Technology Transfer (STTR) Phase I grant programs, according to NASA.

Each selected company will receive $150,000 and, based on their progress, will be eligible to submit proposals for up to $850,000 in Phase II funding to develop prototypes.

The SBIR program lasts for six months and contracts small businesses. The Houston NASA 2025 SBIR awardees include:

Solidec Inc.

  • Principal investigator: Yang Xia
  • Proposal: Highly reliable and energy-efficient electrosynthesis of high-purity hydrogen peroxide from air and water in a nanobubble facilitated porous solid electrolyte reactor

Rarefied Studios LLC

  • Principal investigator: Kyle Higdon
  • Proposal: Plume impingement module for autonomous proximity operations

The STTR program contracts small businesses in partnership with a research institution and lasts for 13 months. The Houston NASA 2025 STTR awardees include:

Affekta LLC

  • Principal investigator: Hedinn Steingrimsson
  • Proposal: Verifiable success in handling unknown unknowns in space habitat simulations and a cyber-physical system

Solidec and Affekta have ties to Rice University.

Solidec extracts molecules from water and air, then transforms them into pure chemicals and fuels that are free of carbon emissions. It was co-founded by Rice professor Haotian Wang and and was an Innovation Fellow at Rice’s Liu Idea Lab for Innovation and Entrepreneurship. It was previouslt selected for Chevron Technology Ventures’ catalyst program, a Rice One Small Step grant, a U.S. Department of Energy grant, and the first cohort of the Activate Houston program.

Affekta, an AI course, AI assistance and e-learning platform, was a part of Rice's OwlSpark in 2023.