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  • John C. Coffee, Jr.: Event Contracts and Prediction Markets Comment bubble 3 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
  • Climate Disclosure Line-Drawing and Securities Regulation By Virginia Harper Ho
  • Board Committee Charters and ESG Accountability By Lisa M. Fairfax
Editor-At-Large Reynolds Holding

The CLS Blue Lion logo Sky Blog

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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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Ilya Beylin

Prediction Markets and Regulation by Non-Enforcement

By Ilya Beylin August 19, 2026 by Ilya Beylin

Kalshi and other prediction markets have been inundating the CFTC with self-certifications of binary options (i.e., prediction products or event contracts).  The figure below shows total self-certifications to the CFTC and self-certifications from Kalshi since it began operating in 2021.  …

Comment  

Has Dodd-Frank Improved or Impeded Swap Markets?

By Ilya Beylin August 6, 2026 by Ilya Beylin

The G-20 nations committed to reform swap markets following the great financial crisis of 2007-08. In the U.S., these reforms were enacted under the Dodd-Frank Act. The interventions began to take effect at the very end of 2012, and new …

Comment  

How CFTC’s Strategic Proposal for Restricting Some Event Contracts Falls Short

By Ilya Beylin June 16, 2026 by Ilya Beylin

On June 10, the CFTC released a proposed rulemaking to govern the listing of event contracts (i.e., prediction products) on a set of subjects Congress identified as deserving of special scrutiny.[1]  These subjects are, as specified in Commodity Exchange …

The Simplification of Banking Organizations’ Balance Sheets After the Financial Crisis

By Ilya Beylin April 13, 2026 by Ilya Beylin

Difficulties in valuing the assets and liabilities of the largest banking organizations aggravated the 2007-08 financial crisis.  Regulation under the Dodd-Frank Act  sought to increase transparency and reduce complexity among these institutions.  With the benefit of significant hindsight, it is …

Federal Judge Trips Over Tricky Statutory Language, Eviscerating CFTC Jurisdiction

By Ilya Beylin September 3, 2025 by Ilya Beylin

Derivatives lawyers are not known to be an excitable bunch.  But a recent opinion from the U.S. District Court in the Northern District of Texas has derivatives lawyers excited, and not in a good way.  The judge has vastly restricted …

Fiscal and Foreign Relations Dimensions of Financial Stability Regulation

By Ilya Beylin August 26, 2025 by Ilya Beylin

There is a venerable history of interdependence between sovereign debt and the financial system.  The national banking system in the U.S. arose as a solution to fiscal challenges the Union government faced in the Civil War.  A key requirement for …

1 Comment  

CFTC Jurisdiction Should Not Extend to Event Contracts

By Ilya Beylin September 23, 2024 by Ilya Beylin

Two weeks ago, there was big news for “event contracts,” which provide for fixed payouts upon the occurrence of specified events and are sometimes referred to as “prediction” products.  Kalshi – an exchange that has popularized event contracts on everything …

A Novel Explanation for Concentration Among Derivatives Intermediaries, and Its Implications

By Ilya Beylin May 17, 2024 by Ilya Beylin

In derivatives markets, as in other financial markets, customers rely on intermediaries for access to products.  When transacting, a customer faces a choice of whether to return to a prior provider or seek a new one.  My post yesterday documented …

Examining High Concentration Among Derivatives Intermediaries

By Ilya Beylin May 16, 2024 by Ilya Beylin

Derivatives are financial instruments used to shift risks, such as fluctuations in interest rates or foreign exchange rates or changes in the value of assets such as stocks, bonds, metals, or agricultural or energy products.  At first glance, entering into …

Ripping the Ripple Opinion

By Ilya Beylin July 18, 2023 by Ilya Beylin

Last Thursday’s split summary-judgment decision in the case that the Securities and Exchange Commission (SEC) brought against Ripple Labs, Inc. (Ripple) and certain of its senior leaders is bonkers.  In partly holding for the defendants, the opinion ignores well established …

1 Comment  

ESG-Linked Swaps and the New Governance School of Regulatory Scholarship

By Ilya Beylin June 20, 2023 by Ilya Beylin

To some extent, this is another collection of words about an acronym that collects words, in the largely passive and meaningless manner of a lint roller.  Elizabeth Pollman recently developed a deft history of the acronym ESG, which stands for …

The Real but Exaggerated Threat of Financial Institution Mobility to Financial Regulation

By Ilya Beylin October 11, 2018 by Ilya Beylin

Where jurisdictions differ in how they regulate an activity, migration allows private parties to choose between regulatory regimes.  In the context of financial regulation, scholars assert that harmonization of regulation across jurisdictions is necessary to prevent institutions from opting into …

Long Live the Editor

By Ilya Beylin June 8, 2016 by Ilya Beylin

After the July 4th weekend, Reynolds Holding will be taking over as the fourth editor-at-large of the CLS Blue Sky Blog.  It has been a remarkable year and a half, and I am confident our Blog will continue to grow …

1 Comment  

Twenty Most Cited Corporate Law & Securities Regulation Faculty in the United States, 2010-2014 (inclusive)

By Ilya Beylin May 23, 2016 by Ilya Beylin
Rank Name School Citations Age in 2016
1 John Coffee, Jr. Columbia University 1470 72
2 Lucian Bebchuk Harvard University 1130 61
3 Stephen Bainbridge University of California, Los Angeles 1010 58
4 Reinier Kraakman Harvard University   820 67
5
…

Notice of Opportunity: Have You Ever Thought of Entering Academia?

By Ilya Beylin March 27, 2016 by Ilya Beylin

Columbia Law School is looking for an Editor-at-Large to oversee and administer the Columbia Law School Blue Sky Blog.  The Blog, now completing its third year, has grown rapidly and become one of the most read sources of current information …

Select Columbia Business Law Review Posts

By Ilya Beylin March 18, 2016 by Ilya Beylin

Today, in addition to our usual offering, we present three student posts from the Columbia Business Law Review:

  • David Markewitz on The SEC’s Appointment Problem and Its Likely Solution;
  • Penina Moisa on The Perils, Protections and Proliferation of
…

Millstein Governance Forum on December 10, 2015 at CLS

By Ilya Beylin December 1, 2015 by Ilya Beylin

On December 10th, Columbia Law School’s Millstein Center on Global Markets and Corporate Ownership will be hosting its 10th annual Millstein Governance Forum.

For the past decade, the Forum has served as one of the premiere …

A Debate on the Morality of Insider Trading

By Ilya Beylin October 25, 2015 by Ilya Beylin

Today, we host two pieces debating the potential for firm disclosed insider trading to occur without harm to the company, its investors and other market participants.  John P. Anderson, Associate Professor, Mississippi College School of Law, proposes that under some …

Nominate Our Blog for the ABA 100

By Ilya Beylin August 4, 2015 by Ilya Beylin

To the friends of the CLS Blue Sky Blog: The ABA journal is conducting a poll to identify the top 100 legal blogs.  We would be honored by your nomination.  In addition to reprinting commentary from practitioners and regulators on …

More on Navinder Singh Sarao, the Alleged Market Manipulator with Responsibility for the Flash Crash

By Ilya Beylin April 22, 2015 by Ilya Beylin

For those interested in the allegations against Navinder Singh Sarao and Nav Sarao Futures Limited PLC, which implicate them in extensive market manipulation and the “Flash Crash” of 2010, here are the complaints from the DOJ and CFTC as well …

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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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Wall Street Journal
Weil Gotshal Rainmakers Talking Exit
August 20, 2026
Reuters
Crypto, AI, Betting Firms Fund Politics
August 20, 2026
The Governance Beat
Where Hot New Topics Land at Boards
August 20, 2026
Securities Litigation & Enforcement
Chancery Says Public Benefit Corps. Free of Revlon in Control Changes
August 20, 2026
Financial Times
Top Law Firms Making “Crazy” Hires
August 20, 2026
Wall Street Journal
U.S. National Debt Tops $40 Trillion
August 19, 2026
Bloomberg
YouTube Lures Creators From Netflix
August 19, 2026
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PE Firm Charlesbank Nears Law Stake
August 19, 2026
D&O Diary
Securities Suit Hits AI Firm Blaize
August 19, 2026
Securities Regulation and Corporate Governance Monitor
SEC Exits Shareholder Proposal Game
August 19, 2026
Wall Street Journal
Hidden Deals Snared Dodgers Owner
August 18, 2026
Dealbook
Is Silicon Valley in DOJ’s Sights?
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The Governance Beat
How AI Drives Institutional Investing
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D&O Diary
Cybersecurity Flaws Prompt Securities Suit Against Israeli Firm
August 18, 2026
Sidley Enhanced Scrutiny
Delaware Chancery Clarifies Implied Covenant’s Gap-Filling Role
August 18, 2026
Dealbook
Paramount Wants States to Shoulder Costs of Warner Deal Delay
August 17, 2026
Delaware Business Litigation Report
Delaware Chancery Finds for Lender in Breach of Contract Claim
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Financial Times
Troubled Loans Strain Private Credit
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Cleary Securities Watch
What ISS STOXX Survey Tells Us
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CFIUS
New Matrix IDs Nat’l Security Risks
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Bloomberg
Covert Oil Flows Keep Prices Down
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Financial Times
Security Software Revives BlackBerry
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D&O Diary
Pump-and-Dump Suits Proliferating
August 16, 2026
Deal Lawyers.com
Chancery Addresses Appraisal After SPAC Underwriter Reorganization
August 16, 2026
Business Law Prof Blog
Delaware Contract Horror Stories
August 16, 2026
Wall Street Journal
The Jobless Boom Has Arrived
August 13, 2026
Bloomberg
Court OKs Pied-a-Terre Tax for Now
August 13, 2026
Financial Times
DOJ Retreats from White Collar Crime, Targets Taxpayer Theft
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D&O Diary
UK Boards Have AI Blind Spot
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Deal Lawyers.com
Chancery Denies Motion to Dismiss Due to MFW “Ab Initio” Failure
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Dealbook
Will Paramount Brinkmanship Work?
August 12, 2026
Freshfields' A Fresh Take
What Does AI Miss in Legal Disputes?
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The Governance Beat
DOJ Antitrust Eyeing ISS, Glass Lewis?
August 12, 2026
Financial Times
Nelson Peltz Readies Wendy’s Bid
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Deal Lawyers.com
CFIUS Releases 2025 Annual Report
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New York Times
Ari Emanuel to Buy Broadway Theaters
August 11, 2026
The Governance Beat
Texas Stock Exchange Proposes to Overhaul Broker Voting Discretion
August 11, 2026
Cleary Securities Watch
FCA Eases UK IPO Research Rules
August 11, 2026
Sidley Enhanced Scrutiny
Delaware Chancery Nixes Derivative Challenge to Insider Financing
August 11, 2026
Corporate & Securities Law Blog
California-Based Delaware Corp Subject to California Rule on Inspections Despite Forum Selection Clause
August 11, 2026
Reuters
Social-Media Addiction Cases Get OK
August 10, 2026
Wall Street Journal
Zuckerberg Lays Out New AI Vision
August 10, 2026
The Governance Beat
In-House Counsel Speak on Using AI
August 10, 2026
Financial Times
Nvidia Aims for $500bn AI Financing
August 10, 2026
Cleary Securities Watch
SEC Turns to Financial Fraud With New Reporting and Accounting Unit
August 10, 2026
Dealbook
Who Wins in Trump AI Safety Plan
August 9, 2026
Truth on the Market
AI Policy Regulating the Wrong Thing
August 9, 2026
Delaware Corporate & Commercial Litigation Blog
Delaware Chancery Explains Why an LLC Not Purely a Creature of Contract
August 9, 2026
Deal Lawyers.com
Chancery Rules Plaintiff’s Reliance on Buyer’s Non-Contractual Reps OK
August 9, 2026
Business Law Prof Blog
How PSLRA Affects Initial Complaints
August 9, 2026
Wall Street Journal
How FIFA PE Plan Nearly Broke Soccer
August 6, 2026
Bloomberg
Private Credit Firms Avert Worst Fears
August 6, 2026
The Governance Beat
Are Two Versions of a Proxy OK?
August 6, 2026
Financial Times
Biggest U.S. Law Firms Explore Selling Stakes to Private Equity
August 6, 2026
D&O Diary
Corporate Law Loophole Can Turbocharge Legal Fees and Expenses
August 6, 2026
Bloomberg
Google Shakes Up Its AI Leadership
August 5, 2026
Freshfields' A Fresh Take
DOJ Declination Telling About Priorities
August 5, 2026
Financial Times
JPMorgan Poaches BofA M&A Banker
August 5, 2026
D&O Diary
AI-Related Class Actions Piling Up
August 5, 2026
Delaware Corporate & Commercial Litigation Blog
Delaware Offers Faster Corporate Filings Services Than Texas
August 5, 2026
Wall Street Journal
Paramount-Warner Antitrust Trial Set
August 4, 2026
Reuters
Amazon Loses Court Ban on Perplexity’s AI Shopping Tools
August 4, 2026
Financial Times
Todd Blanche Poised to Become AG
August 4, 2026
Delaware Corporate & Commercial Litigation Blog
Delaware Chancery Awards Fees for Pre-Litigation Errant Conduct
August 4, 2026
Deal Lawyers.com
Delaware Chancery Reminds Drafters M&A Recitals Aren’t Binding
August 4, 2026
Bloomberg
Trump Slams Big Oil’s Big Profits
August 3, 2026
Delaware Business Litigation Report
Delaware Court Sustains Implied Covenant Claim in Earnout Dispute
August 3, 2026
Financial Times
UBS Money Laundering Rules Lax
August 3, 2026
D&O Diary
Dropbox DExit Draws Shareholder Suit
August 3, 2026
Securities Regulation and Corporate Governance Monitor
Chancery Rules Safe Harbor Shields Public Benefit Corp. Directors
August 3, 2026
Bloomberg
Trump’s Arctic Mining Deal Signals a New Era of State Capitalism
August 2, 2026
D&O Diary
Geopolitical Issues Spur Securities Suit
August 2, 2026
Financial Times
How Gibson Dunn Raided Wachtell
August 2, 2026
Freshfields' A Fresh Take
More Evidence That SPACs Are Back
August 2, 2026
Business Law Prof Blog
How IPO Trends Look Midyear
August 2, 2026
Wall Street Journal
U.S. Weighs Foreign-Student Work Fee
July 30, 2026
New York Times
U.S. Economy Slows as Inflation Bites
July 30, 2026
Freshfields' A Fresh Take
Congress Mulls Cloud Export Controls
July 30, 2026
Financial Times
Europe Balks at $20 Bln Fifa Stake Sale
July 30, 2026
D&O Diary
AI-Related Securities Suit Hits Israeli Web Development Platform
July 30, 2026
Reuters
BAT Must Face Cigarette Label Suit
July 29, 2026
Delaware Corporate & Commercial Litigation Blog
Chancery Invalidates Officer-Manager Removal in the LLC Context
July 29, 2026
Financial Times
Former Goldman Exec Awarded Millions After Paternity Leave “Stigma”
July 29, 2026
Sidley Enhanced Scrutiny
Chancery Nixes Control-Group Claim
July 29, 2026
D&O Diary
Private Credit Fee Suits Pile Up
July 29, 2026
Bloomberg
Warner Bros. Deal Collapse Would Cost the Ellisons $9.8 Billion
July 28, 2026
Delaware Business Litigation Report
Delaware Chancery Nixes Adding Claims Three Business Days Before Trial
July 28, 2026
Freshfields' A Fresh Take
FCPA Case Stresses Mexican Cartels
July 28, 2026
Financial Times
Gibson Dunn Nabs Wachtell Co-Chair
July 28, 2026
D&O Diary
Delaware Mulls “AI Companies”
July 28, 2026
Wall Street Journal
Ford Joins Race for U.S. Army Truck
July 27, 2026
Financial Times
Trump Threatens EU tariffs in Retaliation for U.S. Tech Group Fines
July 27, 2026
D&O Diary
Pump-and-Dump Securities Suit Ups Market Manipulation Litigation Trend
July 27, 2026
Delaware Corporate & Commercial Litigation Blog
Chancery Nixes Prevention Doctrine Argument in Contract Breach Analysis
July 27, 2026
Cleary Antitrust Watch
EU Foreign Subsidies Regs Picking Up More Transactions Than Expected
July 27, 2026
Wall Street Journal
Sazerac Wants Another Shot at Jack Daniel’s Maker Brown-Forman
July 26, 2026
Delaware Business Litigation Report
Delaware Supreme Court Addresses Corporate Benefit from Tesla Director Compensation Settlement
July 26, 2026
D&O Diary
Securities Suit Filings, Settlement Numbers Rise in First Half 2026
July 26, 2026
Delaware Corporate & Commercial Litigation Blog
Delaware Chancery Addresses AI Hallucinations in Court Filings
July 26, 2026
Corporate & Securities Law Blog
Nasdaq OKs $5 Million Market Value Continued Listing Rule
July 26, 2026
Wall Street Journal
DOJ Asks Less, Speeds Deal Reviews
July 23, 2026
Cleary Securities Watch
SEC Offers E-Delivery as New Default for Proxies, Other Disclosures
July 23, 2026
CNBC
NJ Deli Fraudster Gets 21 Months
July 23, 2026
Delaware Corporate & Commercial Litigation Blog
Chancery Dives Deep Doctrinally Into Voidable v. Void Corporate Acts
July 23, 2026
WTW Blog
Reps and Warranties Insurers Zero In on Condition of Assets Risks
July 23, 2026
Bloomberg
EU Tentatively OKs Paramount-Warner
July 22, 2026
Wall Street Journal
Coinbase Sues, SEC Settles
July 22, 2026
Axios
Lawmaker Seeks SEC Probe of Truth Social’s Data-Access Monetizing
July 22, 2026
Law.com
Semi-Annual Reporting Hits a Wall
July 22, 2026
ABA Business Law Today
M&A Further Assurances Clauses May Be Stronger Than You Think
July 22, 2026
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  • Sidley Enhanced Scrutiny Blog
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