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  • John C. Coffee, Jr.: Event Contracts and Prediction Markets Comment bubble 2 By John C. Coffee, Jr.
  • Leveraging Information Forcing in Good Faith By Hillary Sale
  • The Dark Side of Safe Harbors Comment bubble 2 By Susan C. Morse
  • John C. Coffee, Jr. – Mass Torts and Corporate Strategies: What Will the Courts Allow? By John C. Coffee, Jr.
  • Compliance’s Next Challenge: Polarization By Miriam H. Baer
  • Will the Common Good Guys Come to the Shootout in SEC v. Jarkesy? And Why It Matters By Eric W. Orts
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Columbia Law School's Blog on Corporations and the Capital Markets

Editorial Board John C. Coffee, Jr. Edward F. Greene Kathryn Judge

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s&p 500

The Good and Bad of the Revolving Door Depend on Context

By Asaf Eckstein, Ziv Granov and Ariel Shillo October 27, 2025 by renholding

Policymakers and academics have extensively debated the extent and the nature of the revolving door phenomenon – the movement of workers between the government and the private sector. Proponents claim that the flow of former regulators to commercial firms fosters …

Boardroom Demographic Diversity Hits Record Levels as Substantive Diversity Emerges

By Lawrence A. Cunningham December 10, 2024 by renholding

Fascinating trends are afoot in corporate boardrooms, according to data compiled by The Conference Board and its partners, including us at the University of Delaware’s Weinberg Center for Corporate Governance and collaborators from KPMG, Russell Reynolds, and ESGAUGE.

Our new …

Credentials Matter, but Only for Men: Evidence from the S&P 500

By Peter Cziraki and Adriana Z. Robertson December 1, 2021 by renholding

Gender diversity in the boardroom and the C-suite is one of the most contentious topics in corporate governance. Proponents of greater diversity argue that the lack of women directors and top executives is a missed opportunity and that increasing their …

ISS Discusses Liquidity Behavior in the S&P 500

By Henry Yegerman June 8, 2021 by renholding

As a large cap index all the constituents of the S&P 500 are highly liquid. This is certainly true compared to mid-cap or small cap stocks. There are, though, high, and low rent districts within the S&P and the most …

Keeping Up with the Joneses and the Real Effects of S&P 500 Inclusion

By Benjamin Bennett, René M. Stulz and Zexi Wang May 27, 2021 by renholding

The S&P 500 index is the most visible and prestigious broad-based stock index in the U.S. Being included in it means joining an exclusive club that confers prestige on its members, as, for instance, many articles noted when Tesla was …

Discretionary Decision-Making and the S&P 500 Index

By Bernard S. Sharfman and Vincent Deluard March 30, 2021 by renholding

Discretion is an integral part of how indices, including stock market indices, are constituted, according to professors Rauterberg and Verstein and Robertson (here and here), and the S&P 500 index is no exception.

The S&P 500 is a …

Has the Stock Market Become Less Representative of the Economy?

By Frederik P. Schlingemann and René M. Stulz October 19, 2020 by renholding

In the summer of 2020, with the U.S. economy bearing the impact of the COVID-19 pandemic, the unemployment rate was as high as it had been any time since 1948, and the NASDAQ and the S&P 500 indices reached their …

Insider Trading and Geographic Proximity: Evidence from Covid-19

By Erin Henry, George A. Plesko and Caleb Rawson September 1, 2020 by renholding

The COVID-19 pandemic has dramatically changed how businesses operate, resulting in unprecedented stock market effects. While the U.S. stock market has historically shown little to no reaction to an infectious disease outbreak, COVID-19 precipitated a global stock market downturn now …

Exequity Discusses S&P 500 Companies’ Use of “Relative Total Shareholder Return”

By Ben Burney July 24, 2020 by renholding

The economic consequences of the COVID-19 pandemic have upended countless budgets for 2020 and rendered long-term forecasts speculative at best. By now, most companies providing financial guidance have withdrawn it. Uncertainty abounds.

All the while, investors, proxy advisors, and other …

Designing Dual Class Sunsets: The Case for a Transfer-Centered Approach

By Marc Moore December 19, 2019 by renholding

Dual class capital structures have spread exponentially in recent years across much of the corporate world, as has previously been reported on this blog. Dual class listed companies today account for around $4 trillion of US total stock market value …

Corporate Behavior and the Tax Cuts and Jobs Act

By Nicholas Cohen and Manoj Viswanathan October 30, 2019 by renholding

How has the U.S. Tax Cuts and Jobs Act of 2017 changed corporate behavior? In addition to reducing the corporate income tax rate to a flat 21 percent from a high of 35 percent, the TCJA changed other important rules …

Stock Market Indices: Inside the Black Box

By Anita Anand and Adriana Z. Robertson March 21, 2018 by renholding

The news that a whistleblower contacted U.S. regulators last month about alleged manipulation of the Chicago Board Options Exchange Volatility Index, or VIX, highlights near universal reliance on information that stock market indices provide. While the VIX is not itself …

Stocks May Be Expensive but Not Overvalued

By Pierre-Axel Gide September 5, 2017 by renholding

Publications like Bloomberg, The Financial Times, and The Wall Street Journal[1] have recently reported that current stock markets and especially those in the United States are more overvalued than ever. In an interview with the Financial Post[2]…

Oil Prices and the Global Economy: Is It Different This Time Around?

By Kamiar Mohaddes and M. Hashem Pesaran August 24, 2016 by renholding

The positive correlation between oil prices and equity markets over the past few years has been discussed extensively in the media as well as by prominent economists, such as Bernanke and Obstfeld, and has brought into question the generally …

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Each business day, our team sifts through blog posts, news stories, and other sources to keep up-to-date on relevant recent developments. The following links will take you to our recommended selections. To see the sources we follow click Filter Sources.

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Dealbook
Military Drone Startup Raises $2 Billion
March 26, 2026
Delaware Business Litigation Report
Delaware Chancery Nixes Case Lacking Equitable Subject Matter Jurisdiction
March 26, 2026
D&O Diary
AI-Related Securities Suit Hits Power Supply Company
March 26, 2026
Sidley Enhanced Scrutiny
Pro-Merger Activist That Changed Its Mind Can’t Get Court to Block Deal
March 26, 2026
Deal Lawyers.com
Delaware Chancery Orders Equitable Extension of Earnout Window
March 26, 2026
The Governance Beat
SEC “SOX Group” to Target Auditors
March 25, 2026
Dealbook
What Sora’s End Says About OpenAI
March 25, 2026
D&O Diary
Tariff Pass-Through Litigation Expands
March 25, 2026
New York Post
Widow of British Billionaire Killed in Yacht Sinking Faces Bankruptcy
March 25, 2026
Bloomberg
SEC Must Release Musk Interview
March 25, 2026
Wall Street Journal
Judge Says Government Ban on Anthropic Looks Like Attempt to Punish
March 24, 2026
D&O Diary
Short Seller Report Prompts Securities Suit Against Private Credit Firm
March 24, 2026
Bloomberg
Polymarket Alters Insider Trading Rules
March 24, 2026
Reuters
SEC Ex-Enforcement Chief Clashed With Bosses on Trump Before Exit
March 24, 2026
Business Law Prof Blog
The Latest on Reincorporations
March 24, 2026
Wall Street Journal
Airline Economy Cabin Keeps Shrinking
March 23, 2026
Sidley Enhanced Scrutiny
Delaware Chancery Rules Firm Counsel Must Be Neutral in Board Deadlock
March 23, 2026
Bloomberg
SEC Team Is Targeting “Bad Actors”
March 23, 2026
CoinDesk
Is Bankman-Fried Angling for Pardon?
March 23, 2026
D&O Diary
Jury Says Musk Misled Twitter Investors
March 23, 2026
Bloomberg
OpenAI Plans to Double Headcount
March 22, 2026
Reuters
Musk Offers to Pay TSA Salaries
March 22, 2026
Wall Street Journal
New Weapons of Global Power Are Oil, Rare Earths, and Microchips
March 22, 2026
Freshfields' A Fresh Take
Less Burdensome HSR Form Is Back
March 22, 2026
D&O Diary
Prediction Markets Pose D&O Risks
March 22, 2026
Wall Street Journal
Big Banks Win Looser Capital Rules
March 19, 2026
Reuters
DOJ Charges 3 of Diverting AI to China
March 19, 2026
Bloomberg
DOJ Clears Nexstar’s Tegna Deal
March 19, 2026
The Governance Beat
The Latest on Shareholder Proposals
March 19, 2026
Wealth Management
FINRA Disciplinary Cases at Decade Low
March 19, 2026
Bloomberg
Private Credit Bad, But Not 2008 Bad
March 18, 2026
D&O Diary
Delaware Supremes Says De-SPACs Shielded by 3-Year Limitations Statute
March 18, 2026
CoinDesk
Kalshi Faces Arizona Criminal Charges
March 18, 2026
Law.com
Scotus May Hear SEC “Gag Rule” Suit
March 18, 2026
Financial Times
Musk’s Lawyers Sidestepped SEC Team in Twitter Case Settlement Talks
March 18, 2026
Reuters
SEC Issues Crypto Guidance
March 17, 2026
Cleary Enforcement Watch
Enforcers File Fund-Valuation Cases
March 17, 2026
Bloomberg
Judge Declines Calls from SBF’s Mom
March 17, 2026
Securities and Exchange Commission
Enforcement Chief Ryan Is Out
March 17, 2026
Wall Street Journal
Quarterly Reports on Their Last Legs
March 17, 2026
Delaware Business Litigation Report
Delaware Supreme Court Says Form Matters on Books & Records Demands
March 16, 2026
The Governance Beat
SEC Gives Foreign Private Issuers Section 16 Relief for Now
March 16, 2026
D&O Diary
9th Circuit Revives Funko Case
March 16, 2026
Securities and Exchange Commission
SEC Drops Nader Al-Naji Case
March 16, 2026
Securities Regulation and Corporate Governance Monitor
EDGAR Access Delays and Conditional No-Action Relief for Section 16(a) Filers
March 16, 2026
D&O Diary
How to Counter ESG Backlash
March 15, 2026
CoinDesk
DeFi Flub Costs Crypto Trader $50 Mln
March 15, 2026
Regulatory & Compliance
Should Companies’ Insider-Trading Policies Cover the Prediction Markets?
March 15, 2026
ABA Business Law Today
How to Fix M&A Time-of-Essence Bug
March 15, 2026
Business Law Prof Blog
The SPV-pocalypse Is Coming
March 15, 2026
D&O Diary
Suit Tests Government’s Intel Stake
March 12, 2026
CoinDesk
Binance Sues WSJ on Iran Probe Piece
March 12, 2026
FCPA Professor
Smartmatic Says FCPA Case Vindictive
March 12, 2026
Bloomberg
Exxon Plans to Reincorporate in Texas
March 12, 2026
ThinkAdvisor
SEC Must Produce Texting Fine Data
March 12, 2026
Dealbook
Microsoft Sides With Anthropic v. DOD
March 11, 2026
Freshfields' A Fresh Take
DOJ Unifies Corporate Enforcement
March 11, 2026
The Governance Beat
More Nixed Investor-Proposal Suits
March 11, 2026
SEC Sentinel
FINRA Forward Program Launches
March 11, 2026
Reuters
Lawyer Sentenced for Ponzi Scheme
March 11, 2026
Wall Street Journal
Senate’s New Housing Bill Would Force Large Investors to Sell Homes
March 10, 2026
D&O Diary
State AGs Sue Over Section 122 Tariffs
March 10, 2026
FCPA Professor
Bill to Extend FCPA Limitations Statute
March 10, 2026
Bloomberg
Polymarket Enlists Palantir and TWG AI to Monitor Sports Bets
March 10, 2026
Business Law Prof Blog
IPO to Put Pershing Square in Nevada
March 10, 2026
Wall Street Journal
Anthropic Sues Defense Department
March 9, 2026
New York Times
DOJ, Live Nation Settle Antitrust Case
March 9, 2026
SEC Sentinel
FINRA Reveals Enforcement Changes
March 9, 2026
D&O Diary
D&O Liability in Geopolitical Whiplash
March 9, 2026
Delaware Corporate & Commercial Litigation Blog
Delaware Chancery Enforces Restrictive Covenant in Business Sale
March 9, 2026
Reuters
OpenAI Honcho Exits After DOD Deal
March 8, 2026
Wall Street Journal
FTC Chief Mixes MAGA, Enforcement
March 8, 2026
New York Times
Axel Springer to Buy UK’s Telegraph
March 8, 2026
The Governance Beat
Foreign Private Issuers Get SEC Relief
March 8, 2026
Bloomberg
CFTC, SEC May Move In Together
March 8, 2026
Wall Street Journal
States Sue to Stop New Trump Tariffs
March 5, 2026
Bloomberg
SEC Ends Crypto-Billionaire Sun Case
March 5, 2026
Dealbook
UK Banking App Seeks U.S. Charter
March 5, 2026
D&O Diary
Epstein Disclosure-Related Securities Suit Hits Apollo, Leon Black
March 5, 2026
Milbank Insights
SEC Revises Enforcement Playbook
March 5, 2026
Dealbook
Two Big Production Houses Merge
March 4, 2026
The Governance Beat
Vanguard Settles State Antitrust Suit
March 4, 2026
D&O Diary
How xAI-SpaceX Merger Stacks Up
March 4, 2026
Law.com
PCAOB, SEC Enforcement Hit Lows
March 4, 2026
CoinDesk
Trump’s Crypto Legacy: Paul Atkins
March 4, 2026
Wall Street Journal
DOJ Reverses on Law Firm Sanctions
March 3, 2026
Reuters
Treasury to Mull Bank Liquidity Rules
March 3, 2026
Freshfields' A Fresh Take
Texas Anti-ESG Law Struck Down
March 3, 2026
Bloomberg
SEC, Apex Spar Over Off-Channel Communications Sweep Settlement
March 3, 2026
Reuters
U.S. Gasoline Crosses $3 Gallon Mark
March 2, 2026
Bloomberg
Trump Fails Tariff-Refund Push Delay
March 2, 2026
Delaware Business Litigation Report
Delaware Court Rules That Merger Provision Is an Arbitration Clause
March 2, 2026
The Governance Beat
Can AI Tool Replace Proxy Advisers?
March 2, 2026
Deal Lawyers.com
Delaware Supreme Court OKs SB21
March 2, 2026
Wall Street Journal
Mortgage Rates Drop Below 6 Percent
March 1, 2026
New York Times
Berkshire Hathaway Posts Earnings Drop in Warren Buffett’s Last Year
March 1, 2026
Bloomberg
SEC Announces New Insider Trading Rules for Foreign Companies
March 1, 2026
Deal Lawyers.com
Delaware Supreme Court Says Accountant Can Resolve Earnout Claims
March 1, 2026
Business Law Prof Blog
The Latest on Reincorporations
March 1, 2026
Bloomberg
Warner Says Paramount Tops Netflix
February 26, 2026
Securities Litigation & Enforcement
Fewer Securities Class Actions Are Filed, but More Money Is at Stake
February 26, 2026
CoinDesk
SEC Chair Attends Adversary’s Event
February 26, 2026
Securities Regulation and Corporate Governance Monitor
SEC Issues New C&D Interpretations
February 26, 2026
Business Law Prof Blog
SEC’s No-Action Stance Is Heads I Win, Tails You Lose for Companies
February 26, 2026
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  • Business Law Prof Blog
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  • Gibson Dunn Securities Regulation and Corporate Governance Monitor
  • Harvard Law School Forum on Corporate Governance
  • How Appealing
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  • Securities Docket
  • Sidley Enhanced Scrutiny Blog
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  • White Collar Crime Prof Blog
The Blue Sky Blog is Sponsored by Columbia Law School's Center on Corporate Governance.
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