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Corporate earnings announcements and stock market bubbles
Bouri, Elie; Can, Ufuk; Cepni, Oguzhan; Gupta, Rangan (Elsevier, 2026-09)
We examine how corporate earnings announcement shocks influence US stock market bubbles using daily data from January 1990 to June 2025. After identifying positive and negative bubbles, we derive corporate earnings announcement shocks using a heteroskedastic vector autoregression model and estimate their dynamic effects on bubble indicators using local projections, with vector autoregression-based impulse responses reported as a robustness check. Positive earnings shocks boost positive bubbles, particularly at the medium to long-term, while reducing negative bubbles at the short-term. Therefore, favorable earnings news can fuel prolonged speculative episodes by increasing investor optimism, and lead to deep crashes but mild recoveries. HIGHLIGHTS • Link stock bubbles to corporate earnings announcements using local projections. • Apply vector autoregression-based impulse responses as a robustness check. • Positive earnings shocks boost positive bubbles, notably in the medium to long-term. • Positive earnings shocks reduce negative bubbles in the short-term.
Compositional engineering of lignocellulose via selective delignification toward closed-pore-rich hard carbon for high-plateau-capacity sodium storage
Liao, Yunkang; Wang, Qi; Huang, Yongfa; Zhong, Linxin; Li, Tingzhen; Zou, Ren; Dai, Zhenhua; Iwuoha, Emmanuel; Ocakoglu, Kasim; Feleni, Usisipho; Ren, Jianwei; Peng, Xinwen (American Chemical Society, 2026-08)
Hard carbon derived from lignocellulosic biomass is a promising anode candidate for sodium-ion batteries due to its low cost and renewability. However, its practical application is limited by insufficient low-voltage plateau capacity, which is closely related to the closed-pore structure. Herein, we report a green and scalable compositional engineering strategy based on alkaline sulfite pretreatment, an industrially mature pulping process, to convert waste wood into closed-pore-rich hard carbon anodes. By selectively cleaving β-O-4 linkages in lignin, this pretreatment increases the relative cellulose content and fundamentally alters the carbonization pathway, yielding a highly disordered turbostratic structure. The optimized hard carbon (HHC-20) exhibits a doubled closed-pore volume (from 0.073 to 0.178 cm3 g–1) and an expanded interlayer spacing (0.385 nm). Consequently, HHC-20 delivers a high reversible capacity of 347 mAh g–1 at 20 mA g–1, with an outstanding low-voltage plateau capacity of 205 mAh g–1 and an initial Coulombic efficiency of 89.1%. In situ spectroscopic characterizations reveal a sequential sodium storage mechanism involving surface adsorption, interlayer intercalation, and pore filling. This work offers a sustainable and commercially viable pathway for designing high-performance hard carbon anodes for sodium-ion batteries.
The abuse of business rescue proceedings while liquidation proceedings are pending
Magxaki, Sibusiso K (University of Pretoria, 2025-10-30)
In South Africa, section 131(6) of the Companies Act enables an affected person to make an application for a company to commence with business rescue proceedings while liquidation proceedings are in progress. The effect of section 131(6) is that the business rescue application immediately suspends the liquidation proceedings that have already commenced. This may lead to an abuse of business rescue. An abuse of business rescue proceedings would be a contradiction to several objectives of the Act. One objective, in particular, is to provide for the ‘efficient rescue and recovery of financially distressed companies, in a manner that balances the rights and interests of all relevant stakeholders.’
The human cost of digitally-driven organisational change in higher education : a phenomenographic study of employee well-being
Lichy, Jessica; Hadleigh-Dunn, Sara (Routledge, 2026)
This study explores the impact on employee well-being in higher education institutions (HEIs) following organisational change as a result of business model innovation. A phenomenographic approach was used involving auto-driven photo-elicitation interviews (PEIs) with 28 instructors in the UK and France, triangulated by focus group discussions with students. The study focused on how digitally-driven organisational change has an impact on the lived experience of occupational health risks and their manifestations (technostress, burnout, etc.) among staff. Findings reveal that digitally-driven organisational change produces a triad of latent stressors, namely technostress, unsustainable workloads, and eroded psychological safety. Critically, ‘health-washing’ emerged as a pervasive risk factor, wherein performative well-being initiatives increase cynicism and disengagement, rather than buffer burnout. Framed by the Job Demands-Resources model, we show how these tensions have direct ramifications for mental health and work-life balance. From this, we advise HEIs to take inspiration from Nordic models of participatory governance and workload transparency to mitigate psychosocial risks. Prioritising employee agency and sustainable business model innovation would foster sustainable work environments.
Beyond [177Lu]Lu-PSMA : a meta-analysis of safety and efficacy of emerging PSMA radioligand therapy agents
Abdlkadir, Ahmed Saad; Al-Adhami, Dhuha; Moghrabi, Serin; Sathekge, Mike Machaba; Kreiss, Michael; Estrada-Lobato, Enrique; Shi, Hongcheng; Al-Ibraheem, Akram (BMC, 2026-03-23)
BACKGROUND: This systematic review and meta-analysis evaluates the safety and efficacy of emerging prostate-specific membrane antigen (PSMA) radioligand therapy (RLT) agents used beyond [¹⁷⁷Lu]Lu-PSMA in metastatic castration-resistant prostate cancer (mCRPC). METHODS: Systematic searches of PubMed, Web of Science, and Scopus were performed from inception until November 3, 2025. Studies reporting objective response rate (ORR), disease control rate (DCR), and/or toxicity outcomes were included. Meta-analytic pooling, assessment of publication bias, heterogeneity analyses, and subgroup evaluations were conducted using Stata software. RESULTS: A total of 33 studies published between 2017 and 2025 met inclusion criteria, encompassing 3625 therapy cycles administered to 1525 patients. The pooled DCR was 86% (95% CI: 82–90%), and the pooled ORR was 57% (95%CI: 50–63%). [²²⁵Ac]Ac-PSMA monotherapy, evaluated in 17 studies, achieved pooled DCR and ORR values of 88% and 62%. Eight studies assessing [¹⁷⁷Lu]Lu/[²²⁵Ac]Ac-PSMA tandem therapy reported pooled DCR and ORR values of 84% and 51%. Five studies on [¹⁶¹Tb]Tb-PSMA demonstrated pooled DCR and ORR values of 81% and 46%. [¹³¹I]PSMA therapy, reported in three studies, resulted in a pooled DCR of 75% and pooled ORR of 48%. Adverse events were documented in 32 studies, with a pooled incidence of 26%. Most events were low-grade and reversible. Xerostomia and anemia were the most frequently reported toxicities, with xerostomia particularly associated with [²²⁵Ac] Ac-PSMA–containing regimens. CONCLUSION: These findings underscore the promising therapeutic potential of emerging PSMA RLT agents beyond [¹⁷⁷Lu]Lu-PSMA, with favorable biochemical responses and manageable safety profiles. Future large-scale prospective studies are essential to define optimal therapeutic roles and expand treatment opportunities for patients with mCRPC.