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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.  …

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 …

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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Bloomberg
Nscale and Anthropic in Talks Over $45bn Cloud Computing Deal
October 19, 2026
Financial Times
Freshfields Apologizes for Comment on Mideast Sovereign Wealth
October 19, 2026
D&O Diary
Securities Suit Hits BofA Over Anti-Money Laundering Penalties
October 19, 2026
Delaware Corporate & Commercial Litigation Blog
Chancery Declines to Award Remedy for Failure to Maintain Stock Ledger
October 19, 2026
Deal Lawyers.com
Chancery Pauses Cloudflare Recap
October 19, 2026
Dealbook
States Step Up as Antitrust Enforcers
October 18, 2026
Cleary Securities Watch
DOJ Revises FCA Enforcement Rules
October 18, 2026
D&O Diary
AI-Linked Securities Suit Hits Endava
October 18, 2026
Business Law Prof Blog
The Latest on Reincorporations
October 18, 2026
Corporate & Securities Law Blog
Nasdaq Adopts $4.00 Minimum Price Requirement for Initial Listings
October 18, 2026
Bloomberg
Judge Rejects Gemini, CFTC Bid to Undo $5 Million Settlement
October 15, 2026
Wall Street Journal
KFC Moves to Ditch Pepsi for Coke
October 15, 2026
Dealbook
Anthropic Says Revenue Rose 45%
October 15, 2026
The Governance Beat
DOJ Revamps Fraud Enforcement Rules
October 15, 2026
Financial Times
AI, SpaceX Lift Harvard Endowment
October 15, 2026
D&O Diary
Big Corporate Bankruptcies Down
October 15, 2026
Delaware Business Litigation Report
Chancery Declines to Dismiss Aiding, Abetting Claims in Cram-Down Financing
October 14, 2026
Sidley Enhanced Scrutiny
Chancery Clarifies Officer Consent Law
October 14, 2026
D&O Diary
Suits Highlight AI Platform and Data Center Infrastructure D&O Risk
October 14, 2026
Securities Docket
Kalshi Investigates Well-Timed Bets on Trump’s Press Secretary Pick
October 14, 2026
Deal Lawyers.com
Delaware Supremes Affirms Chancery on “Participant” in Proxy Solicitation
October 14, 2026
Reuters
Wall Street Banks See Deals Slow
October 13, 2026
Bloomberg
Fed’s Williams: No Rate Hike Needed
October 13, 2026
Delaware Corporate & Commercial Litigation Blog
Chancery Won’t Name Receiver Where Firm Paid Advancement Late
October 13, 2026
Securities Litigation & Enforcement
Delaware Chancery Warns Advance Notice Bylaws Need to Be Clear
October 13, 2026
Financial Times
FTC Says Skreli Breached Industry Ban
October 13, 2026
Bloomberg
App Bumble Nears $1bn Sale to Ithaca
October 12, 2026
Financial Times
France, Germany Near Car Policy Deal
October 12, 2026
Delaware Corporate & Commercial Litigation Blog
Chancery Nixes Advancement Defense
October 12, 2026
Deal Lawyers.com
SEC Section 21(a) Report Questions Climate Coalition Activity
October 12, 2026
Corporate & Securities Law Blog
Nasdaq Files Proposed Rule Change for Market Value Listing Requirement
October 12, 2026
Wall Street Journal
Trump Backs Dodgy Credit Card Bill
October 11, 2026
Reuters
Nuvacore Funding Implies $2.5bn Value
October 11, 2026
The Governance Beat
SEC Guides on Firm Voting Programs
October 11, 2026
Financial Times
DOJ Probes Networks’ Trump Coverage
October 11, 2026
Sidley Enhanced Scrutiny
Delaware Chancery Rules Accountants Confined to Accounting Decisions
October 11, 2026
Freshfields' A Fresh Take
Sixth Circuit Says State Regulators Can Police Prediction Markets
October 8, 2026
The Governance Beat
ISS’ Benchmark Policy Survey Results
October 8, 2026
Financial Times
Starbucks Explored Chipotle Takeover
October 8, 2026
Deal Lawyers.com
Chancery Opines on Accounting Experts for M&A Price Adjustment
October 8, 2026
Corporate & Securities Law Blog
Third Circuit Revives Fact-Specific Materiality for Securities Fraud Claims
October 8, 2026
Wall Street Journal
Lawmakers Seek Accept-Election Vows
October 7, 2026
Bloomberg
AI Czar to Visit Silicon Valley AI Firms
October 7, 2026
Financial Times
Law Firm Kirkland & Ellis Stops Disclosing Financial Performance
October 7, 2026
D&O Diary
Datavault AI Hit with Market-Manipulation-Related Securities Suit
October 7, 2026
Deal Lawyers.com
Earnouts: Reminders of Ordinary Course Covenant Weren’t Interference
October 7, 2026
Wall Street Journal
Google, Constellation Energy Strike Sweeping Nuclear-Power Deal
October 6, 2026
Dealbook
New Anthropic Challenger Emerges
October 6, 2026
Freshfields' A Fresh Take
FTC Settles Price Discrimination Lawsuit Against Southern Glazer’s
October 6, 2026
D&O Diary
Settlement Values of M&A Suits Drop
October 6, 2026
Deal Lawyers.com
Earnout Denied, Buyer Wins Damages
October 6, 2026
Reuters
New Contracts Help Boeing Turn Page
October 5, 2026
Wall Street Journal
Firms’ AI Outlay Impossible to Budget
October 5, 2026
Bloomberg
Colleges Cut Tuition Bills by $20,000
October 5, 2026
Financial Times
Reflection AI Boosts U.S. Aim to Compete With Chinese “Open” Models
October 5, 2026
D&O Diary
Ryde Hit With New Market Manipulation-Related Securities Lawsuit
October 5, 2026
Dealbook
Investors Bet on Brain-Computer Link
October 4, 2026
Financial Times
Wall Street’s IPO Fervor Cools
October 4, 2026
Deal Lawyers.com
FTC Tweaks HSR Second-Request Rule
October 4, 2026
Corporate & Securities Law Blog
Sixth Circuit Narrows Swap Definition, Nixes Sports-Betting Law Preemption
October 4, 2026
Business Law Prof Blog
What PSLRA Safe Harbor Really Means
October 4, 2026
Bloomberg
GOP Mum on Midterm Affordability
October 1, 2026
Reuters
M&A Deal Rush Fades in 3d Quarter
October 1, 2026
The Governance Beat
Tesla, Goldman Tout Retail Shareholder Voting Instruction Plans
October 1, 2026
Financial Times
Wachtell Hires Ex-SDNY U.S. Attorney
October 1, 2026
D&O Diary
New Caremark Decision Provides Good News About Bad Faith
October 1, 2026
Wall Street Journal
Walgreens Nears Sale of Britain’s Boots
September 30, 2026
The Governance Beat
BlackRock Issues 2026 Voting Report
September 30, 2026
Sidley Enhanced Scrutiny
Court: FCA’s Qui Tam Constitutional
September 30, 2026
D&O Diary
IPOs Up, SPAC Litigation Persists
September 30, 2026
Deal Lawyers.com
Delaware Supreme Court Backs Indemnity for Post-Closing Misconduct
September 30, 2026
Bloomberg
American, Alaska Air to Share Revenue
September 29, 2026
Wall Street Journal
Trump Defends Light-Touch AI Plan
September 29, 2026
Financial Times
Starbucks Cuts Green Goals, Costs
September 29, 2026
D&O Diary
Alphabet Board Hit with Privacy-Related Follow-On Derivative Suit
September 29, 2026
Deal Lawyers.com
Chancery Interprets “Change of Control” in Purchase Agreement
September 29, 2026
Bloomberg
IRS Threatens Crackdown on Array of Wall Street Tax Dodges
September 28, 2026
Dealbook
Safety Issues Could Derail AI IPOs
September 28, 2026
Financial Times
Weil in Crisis After Lawyer Departures
September 28, 2026
D&O Diary
Proxy Season 2026 Returns to Basics
September 28, 2026
Delaware Corporate & Commercial Litigation Blog
Chancery Explains Lawyer Fee Award
September 28, 2026
Bloomberg
Trump, Anthropic CEO to Meet
September 27, 2026
Wall Street Journal
NY Sues Prediction Market Polymarket
September 27, 2026
Dealbook
Clients Eye Cut of Law Firm AI Savings
September 27, 2026
Freshfields' A Fresh Take
Bank Agencies Offer Revamped Third-Party Risk Management Guidance
September 27, 2026
Financial Times
Companies Favor Cheaper “Open” AI
September 27, 2026
Wall Street Journal
MGM Resorts Eyes Diller’s People Inc.
September 24, 2026
Dealbook
AI Safety Concerns Go Global
September 24, 2026
Financial Times
PE Investment May Alter Lawyer Pay
September 24, 2026
Sidley Enhanced Scrutiny
Delaware Chancery Expands AI Focus from Individuals to Governance
September 24, 2026
Business Law Prof Blog
What AI Tells Us About Benefit Corps.
September 24, 2026
Bloomberg
Disney+ Price Jumps 13 Percent
September 23, 2026
Wall Street Journal
Meta’s New AI Agent Is Instant Hit
September 23, 2026
Securities Litigation & Enforcement
SEC, FDA Create Info-Sharing System
September 23, 2026
Financial Times
Private Equity Ending Up in Limbo
September 23, 2026
D&O Diary
AI-Related Securities Suits Surging
September 23, 2026
Wall Street Journal
Obamacare Enrollments Cut 760,000
September 22, 2026
Financial Times
Anthropic, OpenAI Offer Cheap Models
September 22, 2026
Cleary Securities Watch
SEC End to Pay-to-Play Rule May Not Pay Off for Investment Advisers
September 22, 2026
D&O Diary
Consumer Class Actions Claim Tariffs Wrongly Passed to Customers
September 22, 2026
Deal Lawyers.com
Delaware Chancery Addresses Earnout Provision’s “Procedural Checks”
September 22, 2026
Wall Street Journal
Polymarket’s Rush Enabled Fraud
September 21, 2026
Cooley M&A
Chancery Revives Verisk Deal
September 21, 2026
Financial Times
Settlement Clears Paramount-Warner
September 21, 2026
D&O Diary
Crypto Investors Suit Skirts Dismissal
September 21, 2026
Securities Regulation and Corporate Governance Monitor
SEC Plans to Nix Shareholder Proposal Rule, Change Proxy Solicitation
September 21, 2026
New York Times
Anthropic Goes Ahead With IPO Plans
September 20, 2026
Delaware Business Litigation Report
Chancery Nixes Caremark Action
September 20, 2026
Financial Times
How Big Tech Uses Guarantees to Keep AI Exposure Off Balance Sheet
September 20, 2026
Sidley Enhanced Scrutiny
When the Meeting Minutes and the AI Transcript Don’t Match
September 20, 2026
Corporate & Securities Law Blog
SEC Grants Review of Nasdaq Minimum Listed Securities Value Rule
September 20, 2026
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  • Business Law Prof Blog
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  • DealLawyers
  • Delaware Corporate and Commercial Litigation Blog
  • Gibson Dunn Securities Regulation and Corporate Governance Monitor
  • Harvard Law School Forum on Corporate Governance
  • How Appealing
  • PubCo @ Cooley
  • Securities Docket
  • Sidley Enhanced Scrutiny Blog
  • The D&O Diary
  • Truth on the Market
  • White Collar Crime Prof Blog
The Blue Sky Blog is Sponsored by Columbia Law School's Center on Corporate Governance.
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