Good Judgment Open @GJ_Open
The official Twitter handle of the internet's smartest crowd. GJ Open forecasts do not represent the views of Good Judgment Inc (our doting parent co.) gjopen.com Earth Joined March 2017-
Tweets2K
-
Followers3K
-
Following96
-
Likes281
Who wins the World Cup? Who takes the Wimbledon men’s final? Both are open for forecasting on #GJOpen right now, alongside questions on US politics, energy, and markets. gjopen.com/questions/5413…
-- Join the Challenge: gjopen.com/challenges/140… Previous winners on our blog: goodjudgment.com/insights/
Our Q3 “Right!” said FRED Challenge is live: 14 questions on finance and the economy, every one sourced from the St. Louis Fed’s data. Forecast at least 12 for a shot at a top-three badge, and the top scorer gets interviewed for the Insights blog.
We’ve also opened questions on Starmer’s grip on No. 10, Pedro Sánchez’s future in Madrid, whether SCOTUS takes up Second Amendment cases, and which lab’s LLM leads the Arena in 2027. Test your forecasting mettle: gjopen.com/questions/5386…
New on #GJOpen: the 2028 field is already taking shape. Will a Trump (Don Jr., Ivanka, or Eric) launch a Republican run? Will Elissa Slotkin or Rand Paul jump in? Have your say!
September gas prices. The next 5% on the 10-year Treasury. Nvidia’s Q2 revenue. The going rate for an hour of GPU compute. Test your forecasting mettle! gjopen.com/questions/5371…
Will Luigi Mangione be convicted? Will Rodrigo Paz or Friedrich Merz still be in office? Will DeSantis or Rubio jump into the 2028 race? Find these and other new questions on #GJOpen and add your forecasts!
The 2026 World Cup kicks off next month. Will France survive the group of death? Forecast Group I (France, Senegal, Norway, Iraq) and the rest of the group stage on #GJOpen: gjopen.com/questions/5339…
Will Harris, Newsom, Kelly, or Shapiro announce a 2028 presidential bid before September 2027? Find these and other new questions on #GJOpen! gjopen.com
More new questions live on #GJOpen: a federal ban on sports-event prediction markets, the top ARC-AGI-3 score by mid-July, the Bank of Korea’s November base rate, Michigan’s vote on a constitutional convention, and Idaho’s state gun. Go to gjopen.com to forecast!
Two new questions on US/Iran tensions: Will the US acknowledge deploying forces to Kharg Island before 9 August 2026? Will a GCC member acknowledge a strike inside Iran by that date? Forecast both on #GJOpen.
One last reminder: Superforecasting Workshop, 12 & 13 May, 12:00 pm - 2:30 pm ET. Small groups. Researchers and Superforecasters guiding you through the techniques. Stop guessing. Start Superforecasting.
Two new questions for the geopolitics watchers on GJOpen: 7-day average ship traffic through the Strait of Hormuz by 31 July, and Will an OPEC member announce departure before 2027? gjopen.com/questions/5301 gjopen.com/questions/5302
Set sail for the multiplex. Forecast opening-weekend grosses on GJ Open: live-action Moana and Christopher Nolan’s The Odyssey.
When does Elon Musk’s net worth cross $1 trillion? New forecasting questions on GJOpen.
Which AI lab will reach more US businesses by March 2027, Anthropic or OpenAI? New questions posted on GJOpen.
“Foresight is real. Some people have it in spades. They aren’t gurus or oracles with the power to peer decades into the future, but they do have a real, measurable skill.” - Tetlock & Gardner Next workshop: goodjudgment.com/services/upcom…
Stefan Schubert @StefanFSchubert
49K Followers 2K Following I run The Update newsletter. Book: https://t.co/I5zN3WGe0p
Nathan is sometimes a... @NathanpmYoung
31K Followers 4K Following Director, Goodheart Labs. AI-written Community Notes (world first). Part time forecaster @swift_centre. Capital case tweets are literal, others less.
Philip E. Tetlock @PTetlock
48K Followers 640 Following Penn-Integrates-Knowledge (PIK) Professor, Wharton & School of Arts & Sciences. Likes = interesting; Retweets = very interesting; Interesting ≠ endorsement
Michael Story ⚓ @MWStory
10K Followers 3K Following Making Forecasting Useful at @swift_centre. I like big dogs, fast boats, and old stones 🇬🇧🇺🇲🇰🇪🇧🇪🇺🇲🇫🇷🇬🇧🇷🇺🇬🇧🇹🇼🇬🇧
Good Judgment Inc @superforecaster
11K Followers 695 Following Delivering insights into global challenges through the science and art of #Superforecasting. Test your forecasting prowess at https://t.co/5H8XIhN7eK
Linch @LinchZhang
4K Followers 270 Following Researcher and writer on impact of AI @ Forethought. Past: grantmaking, data science, programming. Also on substack: https://t.co/NkGEUNjdbu
Nikos Bosse @nikosbosse
1K Followers 659 Following Trying to make the world a bit better - or at least a bit funnier. Forecasting, AI, prediction markets. Research engineer at https://t.co/Uw97NVEmQG.
Adam @abetrade
198K Followers 305 Following often wrong, never false. derivatives @tradingriot head of trading @breakoutprop acq. by @krakenfx musings at https://t.co/EKXOULW4jI
0xbadtameez @0xbadtameez
18 Followers 148 Following Learning and researching prediction markets and AI.
Brier @0xbrier
1 Followers 32 Following Calibrated calls on prediction markets • Public Brier score vs the market (yes, that's the name) • Every call timestamped before resolution: OpenTimestamp
Louis @louis458779
9 Followers 96 Following
Joe Huang @Joe___Huang
18 Followers 425 Following CEO, Co-Founder at https://t.co/EKiWobQ7Rh Previously, PhD in economics @Penn
Detravious Jamari Bri... @FitToResearch
1 Followers 20 Following
Joe Smith @JoeSmithb5
6 Followers 345 Following
Valeglus @valeglus
3 Followers 236 Following
Crhistian Austin 🇺... @CrhistianAustin
452 Followers 3K Following Los fascistas del futuro no van a tener aquel estereotipo de Hitler o de Mussolini. Saramago
VectorSPX @GeradoM35523
374 Followers 2K Following
Al Gonzalez 🏊🏽�... @LibertadCompart
977 Followers 6K Following Siempre en Busca de MI Sueño Imposible: Alcanzar Mi Máximo Posible CEO&Founder of Business Model Creation and Design https://t.co/szx9ly038T
SeReKe @tedros174662471
473 Followers 2K Following
Dan @DanVitorPH
67K Followers 61K Following Do good🙏 Do it consistently💪 Be patient😎 🤖👩💻👨💻 Co-founder & CTO: @XpertsAi 🧠💻 & 🔗https://t.co/CdALKLaWVz 👈 & 🔗https://t.co/Gha9ULD2DN 👈
shouhui @shouhui007
3 Followers 231 Following
What AI sees @whataiseestoday
0 Followers 11 Following Each day I ask AI a simple question. "What do you see?" and I post what it sends back to this page.
Pratham Dattani @DattaniPratham
3 Followers 76 Following
Crypto Arabia @CryptoArabiaX
256 Followers 2K Following Breaking Crypto News • Market Analysis • Arabic Crypto Media Bitcoin | XRP | Solana | Ethereum 🇺🇸 🇶🇦 🇦🇪 🇸🇦 🇰🇼 🇴🇲 🇧🇭
bonkabonka @timentanalys1s
2 Followers 8 Following
Pierre Lindh @Pierreobv
3K Followers 558 Following 20+ years in iGaming. Founder of https://t.co/ntVrWRUT9k & https://t.co/YYChG6YgH2 NEXTPredict NYC 22-23rd October with 2500 delegates - https://t.co/rZi0NzLXYC
Amplifi @useamplifi
358 Followers 186 Following Permissionless prime brokerage for prediction markets. Margin on Polymarket. Powered by @t1protocol. Backed by @a16z CSX. Join: https://t.co/yc9QnPI3sp
M@c @M_ac86
9 Followers 832 Following
Wham @RotorWham
9 Followers 700 Following
Aleksey King @AlekseyKing1
78 Followers 327 Following
Fluffball @Archfluffy
141 Followers 372 Following
Samuel Kilpinen @KilpinenSamuel
0 Followers 70 Following
Dmitry Terentyev @DimYurich
11 Followers 199 Following
Apologetic Millennial... @apologetic_m
21 Followers 245 Following Aspiring author. Can I interest you in a snarky comment?
Misprediction @misprediction
0 Followers 35 Following
Kabacco @takethep
6 Followers 326 Following
David Moeller @ExcessLiberty
87 Followers 406 Following “I support the current government - no matter who that is.” Let’s build stuff and make the world great.
Mika Kanerva @mkanerva
160 Followers 324 Following Everyone talks conviction. The market tests uncertainty
Cledweenis @cledweenis
7 Followers 20 Following Ex-left-leaner, current MAGA 🇺🇲 i like to engage with things from all viewpoints. don't expect me to hold the party line.
DaviX @DaviXInvestment
700 Followers 2K Following
lloyd chamberlain @lloydchamb
19 Followers 204 Following
Javier Moreno @javier282
231 Followers 145 Following
Michael Wan @michaelwan_cc
243 Followers 2K Following I write about investing through a macro lens. Economist | Investing | Macro
Alperen Kocsoy @kocsoy_alperen
322 Followers 660 Following Sports, labour and behavioural economist; previously @UEFA @durham_uni @BirkbeckUoL @UniBogazici; everlastingly @GalatasaraySK #18916
10Billion.org @10BillionFuture
109 Followers 5K Following Building a global coalition across dividing lines for a world that works for all of us. 10 billion lives depend on our ability to cooperate. #10Billion
Fex Kex @fex_kex2651
1 Followers 128 Following
Polyfire @Polyfireco
13 Followers 32 Following Real-time whale wallet intelligence for Polymarket. See where smart money is positioning before the market catches up. Trade the edge 🔥
Manhar Singh (मन�... @Singh_Manhar1
86 Followers 7K Following https://t.co/dNNv4dQM3d https://t.co/bqQFDy0URp
Prescience @prescience_pm
0 Followers 44 Following looking to learn and build something cool during summer
Nate Silver @NateSilver538
3.0M Followers 2K Following Silver Bulletin, not the only thing I'm doing but the main thing and the best thing! https://t.co/mYtb4rgUyT
Adam Grant @AdamMGrant
871K Followers 937 Following Organizational psychologist @Wharton. #1 NYT bestsellers: THINK AGAIN, HIDDEN POTENTIAL. Podcasts: Re:Thinking & WorkLife @TEDTalks. Former diver and magician.
Philip E. Tetlock @PTetlock
48K Followers 640 Following Penn-Integrates-Knowledge (PIK) Professor, Wharton & School of Arts & Sciences. Likes = interesting; Retweets = very interesting; Interesting ≠ endorsement
Good Judgment Inc @superforecaster
11K Followers 695 Following Delivering insights into global challenges through the science and art of #Superforecasting. Test your forecasting prowess at https://t.co/5H8XIhN7eK
Andrew Eaddy @AndrewJEaddy
741 Followers 468 Following Native NYer | Haverford | Before: @desilvaphillips | Co-Founded @geovanevideo
Mike Bishop 🇨🇦�... @thatMikeBishop
1K Followers 2K Following Interests: AI governance, forecasting, epistemology, social science methodology, policy, etc. Previously: @Superforecaster, @Shopify, @ReplicationMkts
SAFE @SafeSeniorsOrg
34 Followers 123 Following Seniors Against Fraud and Exploitation (SAFE) is a watchdog and advocate seeking to end the financial exploitation of older Americans
Taylor Coleman @analyst_taylor
61 Followers 72 Following Super Forecaster for Good Judgement Inc (@superforecaster ) | Data Enthusiast
Tolga Bilge @TolgaBilge_
4K Followers 685 Following AI policy @ControlAI | https://t.co/IiJWWuiWhD & https://t.co/Ep1VpsILyj | @Superforecaster — https://t.co/UJM9tu3gJU — https://t.co/cl89dttvRF
The Economist US @EconUS
185K Followers 204 Following
Nonrival @nonrival_pub
32 Followers 16 Following The newsletter where readers make and receive predictions about business, tech, and current affairs. Sign up at: https://t.co/JNnpUoC1D1
Sara Hooker @sarahookr
62K Followers 11K Following Building intelligence that evolves @adaption_ai. Built @Cohere_Labs, @GoogleBrain, @GoogleDeepmind. ML Efficiency, Multimodal\lingual.
David Epstein @DavidEpstein
59K Followers 1K Following author RANGE, TheSportsGene, and now INSIDE THE BOX: How Constraints Make Us Better. (Pic is w/Frances Hesselbein).
Cass Sunstein @CassSunstein
127K Followers 2K Following Robert Walmsley University Professor, Harvard; former Administrator, White House Office of Information and Regulatory Affairs; coauthor, NUDGE.
Tim Harford @TimHarford
182K Followers 1K Following Author How To Make The World Add Up (UK) / The Data Detective (US). Cautionary Tales podcast. Undercover Economist at the FT. BBC More or Less. Views my own.
Dubai Media Office @DXBMediaOffice
2.3M Followers 161 Following الحساب الرسمي للمكتب الإعلامي لحكومة دبي The official account of the Government of Dubai Media Office
Thomas (Tom) Lee (not... @fundstrat
622K Followers 926 Following CIO Fundstrat Capital @FundstratCap $GRNY $GRNJ| Research Head @fundstratdirect | @CNBC Contributor | Chairman @BitMNR $BMNR BitMine | Wikipedia: https://t.co/8QsXKpzGT7
Ben Cohen @bzcohen
13K Followers 104 Following @WSJ columnist // read my book THE HOT HAND // [email protected]
37signals @37signals
133K Followers 13 Following Official account of the team behind Basecamp, HEY, and ONCE.
Robert J Shiller @RobertJShiller
185K Followers 56 Following Economist at Yale University. Irrationally Exuberant.
Richard H Thaler @R_Thaler
200K Followers 1K Following Behavioral Economist. Chicago Booth. Co-author of The Winner's Curse with Alex Imas, Nudge: The Final edition with Cass Sunstein, author of Misbehaving.
Nesta @nesta_uk
102K Followers 2K Following We are Nesta, the research & innovation foundation. We apply our expertise in applied methods to design, test & scale solutions across the innovation lifecycle.
Kathy Peach @KathyPeach
2K Followers 2K Following Searching for new ways to accelerate social change. Innovation & Futures in #globaldev. Collective Intelligence @nesta_uk
Geoff Mulgan @geoffmulgan
21K Followers 703 Following Professor @UCL, Sir, writer, policy geek, interested in fixing things & infinitely curious about how the world works, author 'When Science Meets Power' & more.
Nikki Haley @NikkiHaley
1.1M Followers 834 Following Walter P. Stern Chair @HudsonInstitute. Former candidate for POTUS. Former UN Amb and SC Gov. 🇺🇸 Clemson Tiger. 🐅
Joe Gillis @JoeGillis23
341 Followers 5K Following
Jonah Goldberg @JonahDispatch
380K Followers 1K Following Editor-in-Chief, @TheDispatch (https://t.co/ogdkK1lQ3E), LAT columnist. AEI Fellow. Host Remnant Podcast. Majordomo for Zoë and Pippa.
Dana Sherne @dana_sherne
286 Followers 351 Following It's pronounced "Donna" | Emmy-nominated producer & writer | Formerly @CNNplus and @FareedZakaria GPS | Feminist & foreign policy nerd | she/her
Steve Fisher @StephenDFisher
6K Followers 894 Following Professor of Political Sociology, Trinity College, University of Oxford. https://t.co/CqJwOtk3aj https://t.co/3f4d4uxx8W @stevefisher.bsky.social
Rick Noack @rick_n
5K Followers 2K Following Former @washingtonpost Kabul bureau chief and Paris correspondent
Anne-Marie Slaughter�... @SlaughterAM
138K Followers 4K Following Patriot. Entrepreneur. Mother. Mentor. Thinker. Feminist. CEO @newamerica. Fmr @Harvard_Law Prof, @Princeton Dean, Director of Policy Planning, @StateDept.
Yael Grushka-Cockayne @grushkay
3K Followers 365 Following Senior Associate Dean of Professional Degree Programs and Professor of Business Administration at the Darden School of Business
Walt Frick @wfrick
5K Followers 236 Following Editor at Bloomberg Weekend Edition. I don't check Twitter
Srikar Doddi @SrikarDoddi
194 Followers 126 Following
Dr. Peter Scoblic @PeterScoblic
2K Followers 1K Following Event Horizon Strategies, @metaculus, @NewAmericaISP. Former @newrepublic @SenateForeign @ForeignPolicy @HarvardHBS @Kennedy_School.
Clare Malone @ClareMalone
110K Followers 898 Following Staff writer @NewYorker [email protected] (Currently on leave working on a book about MAHA)
Lynn Vavreck @vavreck
11K Followers 1K Following Hoffenberg Professor of American Politics @UCLA, & contributor to @NYTimes. In a few words: music, food, horses, & a good presidential campaign.
Jeffrey Toobin @JeffreyToobin
207K Followers 1K Following Contributing Opinion Writer, New York Times. Author, most recently, of "The Pardon: The Politics of Presidential Mercy." @jeffreytoobin1.bsky.social
S&P Global @SPGlobal
47K Followers 495 Following S&P Global enables businesses, governments, and individuals with trusted data, expertise and technology to make decisions with conviction.
Michael Mauboussin @mjmauboussin
157K Followers 377 Following Decisions, books, investing, mental models, complex adaptive systems, skill, luck. Adjunct Prof @Columbia_Biz and Chairman Emeritus of the Board @sfiscience
Harvard Business Revi... @HarvardBiz
5.6M Followers 197 Following The best ideas in business and management to help people, organizations, and economies work better.
Nathaniel Rakich @baseballot
72K Followers 3K Following Managing editor @VotebeatUS. Previously senior editor and senior elections analyst @FiveThirtyEight. Email, don't DM: nrakich at votebeat dot org
Austin Karp @AustinKarp
16K Followers 705 Following Media reporter for @SBJ. Ramblin' Wreck from Georgia Tech. Sports documentary nut job. Rapidly declining pickup basketball player.
Alix Spiegel @aspiegelnpr
20K Followers 4K Following Co-founder NPR's hit podcast Invisibilia. One of the founding producers of This American Life. Science reporter NPR News. Former NYT. Writing a book!
Will Geary @wgeary
9K Followers 7K Following Curious person. Data Scientist, Stats Professor. The map becomes the territory.
John Sides @johnmsides
9K Followers 1K Following Professor of political science at Vanderbilt University. Publisher of @goodauth. Co-author of THE BITTER END (https://t.co/S984rgq1Yq?…).
Dean Oliver @DeanO_Lytics
26K Followers 559 Following Book #2 is Basketball Beyond Paper. Book #1 got me famous. I do sports analytics, mostly hoops. Now at ESPN, teach @SMWW, doing science of credit division.
Joel Wit @Joel_Wit38
2K Followers 45 Following Former State Department official. Founder, @38NorthNK, Senior Fellow @stimsoncenter
Kim Gamel @kimgamel
2K Followers 507 Following Deputy Editor @civilbeat. Ex-Korea correspondent @starsandstripes; news editor @AP in Baghdad, Cairo, Stockholm etc. @UMKnightWallace fellow ’15. Loves ✈️☕️😺
The Wall Street Journ... @WSJ
21.6M Followers 1K Following Sign up for our newsletters and alerts: https://t.co/QevH0DLQi8 | Got a tip? https://t.co/iXIigdPjEZ | For WSJ customer support: https://t.co/DZgH9n53qg









