Thursday, May 01, 2025

 

Spurned CEOs may become activist shareholders


Campaigns by former executives are relatively common and successful



University of Texas at Austin





Few phrases send chills up a CEO’s spine like “activist shareholder.” In the past year, investment funds such as Elliott Investment Management have successfully pressured companies such as Starbucks and Southwest Airlines to overhaul their boards and their operations.

But there’s a different species of activist shareholder, says Jonathan Cohn, associate professor of finance at Texas McCombs. He calls them the quasi-insider. They’re a former leader, such as CEO, director, or founder, who left the target company for various reasons but still owns an ample amount of stock. They have an intimate knowledge of its inner workings.

In new research, Cohn finds that campaigns by quasi-insiders are both surprisingly common and surprisingly effective.

“These things happen with some degree of regularity,” he says. But because many occur out of public view, “we wanted to try to document how common these types of instances are.”

With Mitch Towner and Aazam Virani, both from the University of Arizona, Cohn analyzed a trove of third-party data on shareholder activism and federal financial filings. The team found:

  • Campaigns are common. Between 1995 and 2021, 327 quasi-insiders took part in some 280 public campaigns.
  • Quasi-insiders are high up. Of the 327, about 38% were former CEOs, 30% company founders, and 21% former directors.
  • Campaigns often succeed. Of the campaigns, 43% achieved their main objective, such as gaining control of the target company’s board of directors. Cohn calls this rate “strikingly high.”
  • Wall Street approves. Stock prices of the target companies saw short-term boosts, with a mean increase of 3.9% from a day before the campaign announcement to 10 days after.

Longer-term impacts on profitability were too difficult to quantify, Cohn says. But he found no indication the campaigns were financially harmful.

Small Companies, Large Egos

Unlike high-profile investors such as Elliott, the researchers found that quasi-insiders primarily targeted smaller companies that weren’t doing well financially.

“Hedge funds may not find it worthwhile financially to target small companies, which creates scope for quasi-insiders to play an activist role,” Cohn says. The biggest corporate names on his list include Humana, Hewlett-Packard, and Darden Restaurants.

A more typical target was the internet media company Destiny Media Technologies. After it fired its founder as CEO in 2017, he nominated himself to the board — along with four others — arguing that he was wrongfully terminated and that current leadership was failing. His effort was unsuccessful.

Although it’s not clear from the data, Cohn suspects “these campaigns are more about fights among personalities than they are fights over ideas. CEOs of publicly traded companies often have big egos. So, a lot of times it’s more about, ‘I think that I can run this company better than you can.’”

Companies might lessen the risks of quasi-insider campaigns by de-personalizing conflicts, he says, and by taking the advice of Michael Corleone in “The Godfather Part II”: Keep your friends close but your enemies closer.

Managers should consider keeping people “who were important and influential in the company in the past close at some level,” he says. “In principle, the former CEO, the founder of the company, probably has ideas that are at least worth listening to.”

Quasi-Insider Shareholder Activism: Corporate Governance at the Periphery of Control” is published in The Review of Corporate Finance Studies

 

ChatGPT vs students



Study reveals who writes better (and it’s not the AI)



University of East Anglia





AI generated essays don’t yet live up to the efforts of real students - according to new research from the University of East Anglia (UK).

A new study published today compared the work of 145 real students with essays generated by ChatGPT.

While the AI essays were found to be impressively coherent and grammatically sound, they fell short in one crucial area – they lacked a personal touch.

As the line between human and machine writing continues to blur, the study underlines the importance of fostering critical literacy and ethical awareness in the digital age.

It is hoped that the findings could help educators spot cheating in schools, colleges and universities worldwide by recognising machine-generated essays..

Prof Ken Hyland, from UEA’s School of Education and Lifelong Learning, said: “Since its public release, ChatGPT has created considerable anxiety among teachers worried that students will use it to write their assignments.

“The fear is that ChatGPT and other AI writing tools potentially facilitate cheating and may weaken core literacy and critical thinking skills. This is especially the case as we don’t yet have tools to reliably detect AI-created texts.

“In response to these concerns, we wanted to see how closely AI can mimic human essay writing, particularly focusing on how writers engage with readers.”

The research team analysed 145 essays written by real university students and another 145 generated by ChatGPT.

“We were particularly interested in looking at what we called ‘engagement markers’ like questions and personal commentary,” said Prof Hyland.

“We found that the essays written by real students consistently featured a rich array of engagement strategies, making them more interactive and persuasive.

“They were full of rhetorical questions, personal asides, and direct appeals to the reader – all techniques that enhance clarity, connection, and produce a strong argument.

“The ChatGPT essays on the other hand, while linguistically fluent were more impersonal. The AI essays mimicked academic writing conventions but they were unable to inject text with a personal touch or to demonstrate a clear stance.

“They tended to avoid questions and limited personal commentary. Overall, they were less engaging, less persuasive, and there was no strong perspective on a topic.

“This reflects the nature of its training data and statistical learning methods, which prioritise coherence over conversational nuance,” he added.

Despite its shortcomings, the study does not dismiss the role of AI in the classroom.

Instead, the researchers say that tools like ChatGPT should be used as teaching aids rather than shortcuts.

“When students come to school, college or university, we’re not just teaching them how to write, we’re teaching them how to think - and that’s something no algorithm can replicate,” added Prof Hyland.

This study was led by UEA in collaboration with Prof Kevin Jiang of Jilin University, China.

‘Does ChatGPT write like a student? Engagement markers in argumentative essays’ is published in the journal Written Communication.

ENDS

 

Lava flow jigsaw puzzle reveals the secrets of shifting continents




Curtin University
HasandaÄŸ volcano 

image: 

HasandaÄŸ volcano 

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Credit: Axel Schmitt





Analysing lava flows that solidified and then broke apart over a massive crack in the Earth’s crust in Turkey has brought new insights into how continents move over time, improving our understanding of earthquake risks.

 

New research by Curtin University has revealed the Tuz Gölü Fault Zone - a more than 200-kilometre-long geological structure visible from space - is slowly pulling apart, providing a rare glimpse into the forces that shape Earth’s crust when tectonic plates collide.

 

Lead Australian author Professor Axel Schmitt, from Curtin’s John de Laeter Centre and School of Earth and Planetary Sciences, said the study solved a long-standing mystery about the fault’s movement, in a breakthrough not just for assessing seismic hazards but also for improving global models of continental deformation.

 

“While Turkey is well known for its earthquake-prone strike-slip faults, this study confirms for the first time that the Tuz Gölü Fault is an extensional fault, meaning the land on either side is moving away from each other, rather than sliding sideways as was previously thought,” Professor Schmitt said.

 

“Several lava flows from HasandaÄŸ volcano flowed over the fault and cooled, and then were broken apart by earthquakes. We were able to reconstruct their original shape and determine their age. This allowed us to track how rocks that were once connected have shifted apart over time.

 

“Our findings unambiguously reveal the fault is pulling apart at a rate of about one millimetre per year, rather than shifting sideways. Understanding these movements is crucial not just for assessing volcanic and earthquake threats but also for improving global models of continental deformation.”

 

The research team used cutting-edge techniques, including remote sensing data, the John de Laeter Centre’s ion microprobe and helium dating at the Western Australia ThermoChronology Hub (WATCH) Facility to precisely date the lava flows and track their displacement over thousands of years.

 

Curtin co-author Associate Professor Martin Danišík, from the John de Laeter Centre, said tiny zircon crystals in the lava flows worked as geological clocks, capturing helium produced by the radioactive decay of tiny amounts of naturally occurring uranium and thorium.

 

“By measuring uranium, thorium and helium in zircon, we can accurately determine when the lava flows erupted, spilled across the fault and subsequently cooled,” Associate Professor Danišík said.

 

Curtin co-author and remote sensing expert Janet Harvey, also from the John de Laeter Centre, said that since earthquakes on the Tuz Gölü Fault occur less frequently than those on the fast-moving plate boundary faults in northern and eastern Turkey, landscape deformation studies like this provide data that the modern seismic record alone cannot.

 

“The fault sits at a key location where the Eurasian, Arabian and African plates are all interacting,” Ms Harvey said.

 

“Studying its movements helps us understand how strain is distributed when continents collide - insights that can be applied elsewhere along the Alpine-Himalayan mountain belt and to other continental deformation zones around the world.

 

“This research highlights the importance of revisiting long-held geological assumptions and using modern techniques to precisely measure how continents respond to the immense pressures of tectonic collisions.”

 

The study was co-authored by researchers from Konya Technical University (Turkey), Heidelberg University (Germany) and University of Toronto (Canada).

 

The full study, titled ‘Pure dip-slip along the Tuz Gölü Fault Zone accommodates east-west extension

of Central Anatolia’, has been published in journal Communications Earth & Environment and is accessible here: https://doi.org/10.1038/s43247-025-02192-6

 

The Mystery of the "Air-dried Chaplain" solved: the Life and "Afterlife" of an unusual Human Mummy from 18 th century Austria

Centuries-old Austrian mummy found to be exceptionally well preserved thanks to unusual embalming method



Researchers found a centuries-old mummy from Austria exceptionally well preserved – likely the result of a never-before reported embalming method using wood chips, twigs, fabric, and zinc chloride



Frontiers

The 'air-dried chaplain' 

image: 

The mummy of the 'air-dried chaplain' in his coffin in the church crypt of St. Thomas am Blasenstein, Austria. Credit: Andreas Nerlich.

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Credit: Andreas Nerlich





For centuries, many cultures around the world embalmed their dead, often for religious reasons. Accordingly, embalming methods differ, but not all of them are studied equally well.

In a first report of a previously undocumented embalming method, an international team of researchers has analyzed a mummy from a small Austrian village. Detailed analyses provided insights into little-known mummification techniques and allowed them to identify the body.

“The unusually well-preserved mummy in the church crypt of St Thomas am Blasenstein is the corps of a local parish vicar, Franz Xaver Sidler von Rosenegg, who died in 1746,” said Dr Andreas Nerlich, a pathologist at Ludwig-Maximilians-Universität and first author of the Frontiers in Medicine article. “Our investigation uncovered that the excellent preservation status came from an unusual type of embalming, achieved by stuffing the abdomen through the rectal canal with wood chips, twigs and fabric, and the addition of zinc chloride for internal drying.”

A different type of embalming

The team conducted extensive analyses, including CT scanning, focal autopsy, and radiocarbon dating. The mummy’s upper body was fully intact, whereas lower extremities and head showed considerable post-mortem decay.

During their investigation, the researchers found a variety of foreign material packed in the abdominal and pelvic cavity. Upon opening the body, the team identified wood chips from fir and spruce, fragments of branches, as well as different fabrics, including linen, hemp, and flax. All these materials were easily available at that time and in that region.

The researchers believe it is this mixture of materials that kept the mummy in such good condition. “Clearly, the wood chips, twigs, and dry fabric absorbed much of the fluid inside the abdominal cavity,” said Nerlich. Next to these absorbents, a toxicological analysis showed traces of zinc chloride, which has a strong drying effect.

This way of embalming is different to better-known methods where the body is opened to prepare it. Here, however, the embalming materials were inserted via the rectum. “This type of preservation may have been much more widespread but unrecognized in cases where ongoing postmortal decay processes may have damaged the body wall so that the manipulations would not have been realized as they were,” Nerlich pointed out.

Inside the mummy, the researchers also found a small glass sphere with holes on both ends – perhaps an application to fabric of monastic origin. Since only a single bead was found, it might have been lost during the preparation of the body.

Tracing a life

The mummy was long rumored to belong to Sidler, but the origin of these rumors is unknown. It was, however, only the current investigation that provided certainty as to its identity. “The identification of the mummy comes from our interdisciplinary analysis, especially with the radiocarbon dating, his body activity pattern, and the stable isotope pattern,” Nerlich said.

These analyses showed that the mummy died most likely aged between 35 and 45 years old and most probably between 1734 and 1780. These dates match Sidler’s life. In addition, they suggested Sidler ate a high-quality diet based on central European grains, animal products, and possibly inland fish. Towards the end of his life, he may have experienced food shortages, likely due to the War of Austrian Succession. The lack of major sign of stress on the skeleton fits the life of a priest without hard physical activity. There also was evidence of a long-term smoking habit, and lung tuberculosis towards the end of his life. 

“We have some written evidence that cadavers were ‘prepared’ for transport or elongated laying-out of the dead – although no report provides any precise description,” Nerlich concluded. “Possibly, the vicar was planned for transportation to his home abbey, which might have failed for unknown reasons.”


Left: Removal of parts of the foreign material from the dorsal abdominal wall revealed a mixture of fragmented white fabric, small wood chips, and plant material along with some brownish amorphous tissue residues. Right: The round foreign sphere detected in the left pelvis had a small hole with a raised lip. Credit: Andreas Nerlich


Further findings of special fabric tissue from the material detected in the mummy's abdominal cave: Left: A piece of cotton with an elaborate floral pattern. Right: Fragment of a silk fabric such as used for the mummy’s cross. Credit: Andreas Nerlich.

Analysis of the packing material obtained during the partial autopsy of the abdomen revelaed A: Typical wood chip. B: Twigs of various plants. C: Small fragment of a simple fabric made of hemp or flax. Image: Andreas Nerlich.

 

US Medicaid unwinding disrupted kids’ and young adults’ access to chronic disease medicine



Prescriptions for mental and behavioral health, epilepsy and asthma affected among those living in states with largest drops in Medicaid enrollment




Michigan Medicine - University of Michigan




Children and young adults with depression, schizophrenia, ADHD, asthma and epilepsy can get great relief from medications to control their symptoms, helping them stay in school or work and prepare for their futures.  

But they should keep taking those medications regularly to get the best results; interruptions can cause flare-ups of these chronic health conditions.  

Now, a new study suggests that such interruptions happened more often in states that had the biggest drops in Medicaid enrollment during the recent “unwinding” process.  

That process, which brought to an end the special Medicaid eligibility rules made at the start of the pandemic, began in April 2023. However, states varied widely in how many people they disenrolled, because of differences in administrative processes and efforts to verify income-based eligibility.  

The new study, conducted by a team at the University of Michigan’s Susan B. Meister Child Health Evaluation and Research Center (CHEAR) and colleagues, is published in the journal Pediatrics.  

The team, led by CHEAR director Kao-Ping Chua, M.D., Ph.D., analyzed national prescription data for people age 0 to 25 using five classes of chronic disease medications before Medicaid unwinding began. These medications are used to treat behavioral health conditions, breathing conditions, and seizure disorders.  

They find that young adults ages 19 to 25 were more likely to stop filling prescriptions for these chronic disease medications if they lived in states that had the biggest drops in adult Medicaid enrollment, compared with those living in states with the smallest drops.  

Children in the states with the largest drops in child enrollment in Medicaid or the Children’s Health Insurance Plan (CHIP) also experienced greater disruptions in therapy for certain classes of chronic disease medications, although the disruptions occurred less consistently than for young adults. CHIP is open to children under age 19 whose family incomes are too high to qualify for Medicaid, but too low to afford private coverage. 

Significance for current Medicaid funding process 

The new findings have significance not just for understanding the impacts of Medicaid unwinding, but also for the potential impacts of the cuts in Medicaid funding now being discussed in health policy budget debates.  

“Our findings suggest that the rapid disenrollment of young people from Medicaid during the unwinding process resulted in the disruption of chronic disease therapy,” said Chua, a pediatrician and health care researcher at the U-M Medical School and School of Public Health. “As policymakers debate whether to enact drastic cuts to Medicaid funding, they should consider the possibility that doing so could similarly disrupt chronic disease therapy for children and young adults, placing them at higher risk for disease exacerbations and absenteeism from school and work.” 

Effects based on state unwinding impacts 

Chua and colleagues used data from a national prescription drug database from IQVIA, which captures 92% of prescriptions filled in U.S. pharmacies, including those paid with cash. They also relied on data from the Georgetown University Center for Children and Families to calculate the percentage change in child enrollment in Medicaid and CHIP from just before the start of unwinding to the end of 2023.  

The states with the biggest drops in child Medicaid enrollment (17% or more) were Arkansas, Georgia, Iowa, Idaho, Kansas, Montana, New Hampshire, Oklahoma, South Dakota, Texas, Utah, Wisconsin and West Virginia, and the states with the smallest drops (4% and less) were California, Connecticut, District of Columbia, Hawaii, Illinois, Kentucky, Maryland, Maine, North Carolina, Nevada, New York, Rhode Island and Tennessee. Oregon was excluded because its unwinding started later. 

Children and teens who used asthma inhalers and lived in one of the states with the largest drops in Medicaid enrollment were more likely to decrease use of their medication. In almost all cases, children and teens living in those states were also more likely to start using private insurance or cash to pay for prescriptions for the five chronic disease medication classes. 

Among young adults, the researchers saw even larger effects.  

The young adult analysis excluded three states (South Dakota, North Carolina and Georgia) that expanded Medicaid for adults during the unwinding period. The team used data on total adult Medicaid enrollment before unwinding and at the end of 2023.  

The states with the biggest drops in adult Medicaid enrollment (19% or more) were Arkansas, Colorado, Idaho, Kansas, Montana, New Hampshire, North Dakota, Oklahoma, Texas, Utah, West Virginia, Wyoming. The states with the smallest drops (8% or less) were California, Connecticut, Delaware, Hawaii, Illinois, Maine, Massachusetts, Minnesota, Nebraska, Nevada, Virginia, and Wisconsin 

Young adults with prescriptions for any of the five chronic disease medication classes were more likely to stop filling these prescriptions if they lived in states with the highest versus lowest drops in adult Medicaid enrollment. Similar to children, they were also more likely to start using cash or private insurance to pay for prescriptions if they lived in states with high drops in enrollment.  

Nearly 72 million Americans are currently enrolled in Medicaid after the end of the unwinding, and an additional 7.2 million children are enrolled in CHIP which also relies on Medicaid funding.  

Ten states have not expanded Medicaid under the Affordable Care Act, but those that have done so offer coverage to all individuals up to 138% of the federal poverty level, or about $21,000 for an individual and $36,000 for a family of three. 

In addition to Chua, the paper’s authors are U-M pediatrics research postdoctoral fellow Joanne Constantin, Ph.D., Genevieve M. Kenney, Ph.D., of the Urban Institute, Rena M. Conti, Ph.D., of Boston University and Kosali Simon, Ph.D. of Indiana University, Bloomington. Chua is a member of the U-M Institute for Healthcare Policy and Innovation. 

The study was funded by CHEAR and by the National Institute of Health (R01DA056438, R01DA057284) 

Changes in Chronic Medication Dispensing to Children and Young Adults During Medicaid Unwinding. Pediatrics, DOI:10.1542/peds.2024-070380