Finance prof+co-director PE Program @Columbia_Biz. RA @nberpubs. Quant. Advisor @correlationvc. Co-organizer @workshopefi. Code: https://xitter.cf/t.co/h62ya0ity1

Manhattan, NY
Joined April 2010
Michael Ewens retweeted
If you are voting in AFA elections, please vote for Stijn Van Nieuwerburgh as Second Vice President! There are few people in the profession who have invested more in training and mentoring, or in communication and impact in research. He will upgrade what the AFA does here.
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Michael Ewens retweeted
I'm pleased to announce the 2nd American Finance Association Junior Faculty Mentoring Program (JFMP) event, which I am co-organizing with Audra Boone. The program provides mentorship, research feedback, and professional development to junior faculty in finance. 🧵
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Michael Ewens retweeted
An Econ PhD student at the 20th ranked program who is working on stuff they are passionate about will have a better job market than one at MIT who's been doing nothing but phd-app-maxxing since undergrad. People get confused by this because they don't observe *how* successful people came about their insane knowledge bases. It wasn't by relentlessly grinding away at stuff because they had to. They look at Scott Kominers and say "if i grind and learn as much math as he did, i will be successful." You can't! *You* can't learn as much math as Kominers because he gets energized by configuration results for type ii lattices. You will burn out if you try to do it this way. You cannot, through grind alone, learn more about the economics of cities than Glaeser, or about how to maximize a value function than Acemoglu. Research careers are long. Most people give up and stop working on research (graph is share of elite PhD graduates with at least one publication in year X after graduation). If you're starting a PhD, you're presumably doing it to have a successful 40-year research career. The number one factor in whether that happens is not which program you get into, it's whether you find a research angle that energizes you enough to push through the endless barriers an academic career throws in your path. This is why a lot of the received wisdom around PhD applications is wrong. If you're 100% consumed by the predoc rat race already, it's going to be a long, hard road ahead. Obv you still have to do admissions, you should study a lot for the GRE, sigh it seems like taking real analysis is probably worth it. But spending time on the things that energize you about economics is a no-brainer, whether it's policy, or blogging, or whatever, you gotta do the things that light your fire and make you want to be on this road.
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Michael Ewens retweeted
Today, the @SECGov proposed amendments to provide public companies with the option of filing one semiannual report, on a new Form 10-S, in lieu of three quarterly reports on Form 10-Q. Here's why it matters. ⬇️ Public companies have an obligation under the federal securities laws to provide information that is material to investors. Yet, the rigidity of the SEC’s rules has prevented companies and their investors from determining for themselves the interim reporting frequency that best serves their business needs and investors. Today’s proposed amendments, if ultimately adopted, would provide companies with increased regulatory flexibility in this regard. In determining a company’s reporting cadence, a company might consider factors such as the costs and management time of preparing quarterly reports versus semiannual reports, expectations of its investors, potential effects on its cost of capital, the stage of its business development, the nature of its business model, other avenues of disclosure including earnings calls[2] and current reports on Form 8-K, and prospects of increased research coverage, all without undermining fundamental investor protections. Ultimately, this flexibility might reduce some of the burdens of being a public company and potentially influence a company’s decision to become or remain public. The proposal seeks public input on the optional semiannual reporting framework, and I look forward to the public feedback. Of course, the frequency of regulatory reporting is only part of the equation for incentivizing companies to go and stay public. Another significant part is ensuring that the disclosure—both financial and non-financial—mandated in interim reports, whether filed quarterly or semiannually, is guided by materiality as the north star. At the SEC, the Commission staff is well underway in exploring potential amendments to Regulation S-K,[3] generally and including the parts implicated by interim reports.[4] With respect to the financial statements required in interim reports, I also encourage the Financial Accounting Standards Board to evaluate potential amendments to its accounting standards, with the same goal of eliciting disclosure of material information and avoid compelling the disclosure of immaterial information. Today’s proposal is just the first step of the larger, comprehensive effort to review and reshape the current SEC rules governing public companies with respect to their ongoing reporting obligations and their ability to raise capital in the public markets. Over the next few months, I expect that the Commission will be considering a series of proposals that, if adopted, will not only redefine what it means to be a public company, but will make being public attractive again.
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Michael Ewens retweeted
Here is a puzzle. On the days when major AI labs release new frontier models — the kind of news that presumably raises expectations about future productivity growth — nominal and real Treasury yields fall. Andrews and Farboodi (2025) document this pattern across 17 model releases in a fascinating paper. Standard theory predicts that risk-free real rates increase when we expect higher economic growth as some of us try to consume some of that extra future income today by borrowing, thus pushing up rates. The conventional interpretation of these findings is that markets are revising growth expectations down, not up: bad news for AI optimism. What's going on? U.S. Treasury Investors' Massive Bet on AI (post with James Paron and Howard Kung) thetwocents.substack.com/p/u…
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Michael Ewens retweeted
A few friends have asked me about how I have been using Claude Code, so I decided to have Claude help me synthesize some of my key lessons and workflow tricks that I've used in the last month: psantanna.com/claude-code-my…
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Michael Ewens retweeted
Video message from Federal Reserve Chair Jerome H. Powell: federalreserve.gov/newsevent…
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Michael Ewens retweeted
🚀 Join us for the 7th @workshopefi Student-Led Workshop! 📅 Nov 10, 2025 | 12:30 PM EST | Virtual 🏆 Best Paper Award: $500 Explore cuting-edge research in entrepreneurship, innovation & finance with PhD students & faculty! 🔗 Register & Program: shorturl.at/OnstL
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Michael Ewens retweeted
I am a Ph.D. graduate in Strategy and Entrepreneurship @ Bocconi University, and am currently on the 2025-2026 job market. I explore topics like entrepreneurial financing, innovation, competition, and collaboration. My website: sites.google.com/view/yangya…
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Michael Ewens retweeted
Looking forward to the next @nberpubs Organizational Economics Working Group meeting on April 10/11, coorganized with @andreapratnyc. We have a great line-up of new research papers in Org Econ! Program: nber.org/conferences/organiz… Link to the livestream: youtube.com/nbervideos
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Michael Ewens retweeted
Replying to @startupecon
Gonna start calling him Nate Silve
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Michael Ewens retweeted
So, not to be that guy, but because I've seen this point floating around On Here: The IV estimates in this very creative paper do not come from 2SLS (the LATE interpretation of which is well understood) but from a nonlinear control function approach (2SRI logit) which does not, to my knowledge, have an easy LATE interpretation. So I'm not actually sure how to interpret their estimates outside of the implicit homogenous effect assumption underlying the 2SRI model Its unclear why the authors do not at least check robustness to linear IV; this note in their appendix is troubling .... – at Providence, RI
Worth being v clear - This is not “the effect” of parental divorce in some absolute sense This is a very specific LATE: the average effect of the kind of parental divorce which is triggered by opportunity-induced infidelity (opportunity = meeting someone at work)
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Michael Ewens retweeted
📢The 1st Fall WEFI @workshopefi seminar is Sept. 23rd @ 12pm ET Daniel Karpati (ESE Rotterdam) presents "Self-Employed Mothers: Child Penalties, Maternity Benefits, and Family Health." w/ @Fabercore Elena Simintzi (@kenanflagler) discusses Register: bit.ly/wefiF2024_1
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Michael Ewens retweeted
Reminder to send in your papers by August 15th. The Fall 2024 WEFI seminar series starts next month: workshop-efi.com/call-for-pa…
📢Call for papers! WEFI 2024 Fall Series will start mid-September. We invite you to submit your Entrepreneurship, Entrepreneurial Finance, and Innovation papers. Email to [email protected]. Deadline: Aug 15, 2024. Thank you for all your support to keep WEFI strong!
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Michael Ewens retweeted
📢The final Spring WEFI @workshopefi seminar is on April 15th. Lindsey Raymond (@LindseyRRaymond, @MITSloan) presents "The Market Effects of Algorithm." Discussant: Runshan Fu (runshanfu.com/, @NYUStern) Register here: bit.ly/wefi2024_raymond
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Michael Ewens retweeted
We are excited to announce the Spring 2024 @workshopefi schedule! We'll host 3 excellent papers. Presentations start March 18th at 12 pm ET. Schedule: workshop-efi.com Sign up to email announcements: workshop-efi.com/signup A 🧵on each paper follows:
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Michael Ewens retweeted
🚨JOB ALERT🚨 Just got approval to post a TT position in entrepreneurship / family business @Cornell SC Johnson College of Business. Rookie/senior-junior academicjobsonline.org/ajo/j… Late in the cycle I know, so deadline=▶️Feb 15◀️. I'm chairing search, so pls reach out w/?s!
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Michael Ewens retweeted
February 16 - bit.ly/422F5B7 30th Annual PE Conference hosted by @Columbia_Biz @CBSPEConf with Keynotes Martin Brand @blackstone and Alan Patricof Founder of @apax_partners @greycroftvc Thank you to sponsors: @Kirkland_Ellis @ParthenonEY @BNPParibas @RopesGray
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We are hiring a pre-doc! Interested in real-estate, climate and household finance? Join @parisastry and me at @Columbia_Biz! Apply here: apply.interfolio.com/139029 @econ_ra
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Michael Ewens retweeted
Nadya and Andrey Malenko and I are organizing the next Finance Theory Group conference. The topic is bridging theory and empirical research in finance. The announcement is here: ssrn.com/index.cfm/en/janda/…
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