Quantitative Finance

**Important time note:** Please plan on arriving between 5:30 and 6:00 as the elevators lock after 6 and you'll need to message us and we'll need to come get you. The building address is 4450 Bridge Park The entrance is 6620 Mooney St, Suite 400 You will need to scan your ID at the door to get a visitor badge. **Abstract** *Spec-Driven Development with GitHub Spec-Kit: From Intent to Implementation* Spec-driven development flips the traditional workflow on its head: instead of code being the source of truth, the specification becomes the backbone of design, collaboration, and delivery. In this session, we’ll explore how GitHub Spec-Kit enables teams to treat specifications as first-class artifacts—living documents that drive architecture, implementation, and verification. You’ll learn how Spec-Kit helps teams clearly express intent using structured, version-controlled specs that live alongside code. We’ll walk through a practical workflow that starts with defining system behavior and constraints, then progressively refines those specs into testable, automatable outcomes. Along the way, we’ll show how specs can reduce ambiguity, improve cross-functional collaboration, and make design decisions explicit before a single line of production code is written. This talk will cover: --What spec-driven development is (and what it isn’t) --How GitHub Spec-Kit fits into modern developer workflows --Using specs to align product, engineering, and AI-assisted development --Real-world examples of turning specs into implementations with confidence Whether you’re building greenfield systems, integrating AI into your stack, or trying to reduce costly rework, spec-driven development offers a scalable way to move faster without sacrificing clarity. Attendees will leave with concrete patterns and a clear mental model for adopting GitHub Spec-Kit in their own projects. **YouTube Link** TBA

Why are we unhappy? Where does emotional pain come from? Studies show that people who suffer from long-term emotional pain have painful experiences in their lives that were never fully resolved in their mind. In other words, there were issues in the past that were not completely dealt with. This can include abuse in childhood, breakups, divorce, death of a loved one, to name a few. How do you know whether you have gotten over something painful? Here is an easy test: Do you still have attention on what had happened to you? For instance, do you still find yourself thinking about something painful that you went through? If you are, then you are not over it. In fact, in severe cases, people find themselves playing a "tape" in their mind over and over again. So how do you heal from your past? How do you stop the "tape" playing in your mind? In this meeting, you will learn a technique to help you with that. Come join us! Be sure to click on the red "Attend" button below to come to this local event. We look forward to seeing you there. This group is created by the Dianetics and Scientology life improvement center.

"Astrology: The Essential Basics" 5 classes with Judi Vitale, MA, C.A., NCGR-PAA Wed, Feb 11 | Zoom This course is an introduction to astrology for those who are interested in using this ancient art and science for their own illumination, and in preparing to offer astrology services to clients. About the event Astrology: The Essential Basics - Class Outline A 5-part course presented by Judi Vitale, MA, C.A. NCGR-PAA Wednesday 7:30 PM February 11 (#1) and 25 (#2), March 11 (#3) and 25 (#4), April 8 (#5). This course is an introduction to astrology for those who are interested in using this ancient art and science for their own illumination, and in preparing to offer astrology services to clients. It covers the very basic elements of astrology, including how astrology can be used and the ethics involved in working with clients. Written materials are provided, along with instruction on drawing the glyphs of the planets and signs. The Whole Signs House system will be used as the basis for this course. This system makes it easier for students to comprehend the meanings of elements, modalities, sect, and aspects. Each class is 90 minutes in length. Lesson #1: Astrology: A Historical Overview and Applications in the Modern World Lesson #2: The Zodiac, The Signs, and the Planets that Play in Them Lesson #3: The Ways the Planets Play (Planets in Signs) Lesson #4: The Houses and Aspects Lesson #5: Forecasting with Transits - Ethics and Technique After more than 40 years as a professional astrologer, speaker, and writer, Judi thrives on sharing what she has been given by her illustrious teachers. She earned her Level IV Certification from NCGR-PAA in 1995, She specializes in counseling clients using techniques ranging from traditional astrology to Uranian analysis. Judi holds a Master's degree in Transpersonal Counseling, and offers a coaching practice that emphasizes hypnotherapy and breathwork as well as astrology. She lives in Pittsburgh with her tiny dog Candace.

Welcome, readers! Our February read is **_1984 by George Orwell._** In 1984, George Orwell imagines a world where the government watches everyone, rewrites reality, and punishes even private thoughts. Winston Smith dares to question this system, believing that truth and love might still exist. His rebellion draws him into a chilling struggle against a power that knows him better than he knows himself. The novel leaves readers asking whether freedom is possible when reality itself can be controlled. Looking forward to discussing with everyone! We will meet at Zaftig Brewing Co in their event room in the back. We are welcome to bring in our own food, but **drinks must be purchased at the bar.** Happy reading! 📖

Join us and work remotely together with like-minded UX folks. This is a last minute opportunity to get out at one of our favorites, [Junto](https://thejuntohotel.com/)! Plenty of seating is available in addition to a connected coffee shop and restaurant. I will be there 10-12 for sure, maybe longer. Feel free to come and go anytime during the day, and don't forget your charger and headphones!

**💥 Join us THIS Saturday and EVERY Saturday!** **💥 At Columbus’ Hottest New Salsa Venue!** **.** Lincoln Street Salsa THIS Saturday and EVERY Saturday! 8 pm – 1 am **.** **💥 Gorgeously Renovated Studio!** **💥 Free Parking!** **💥 BYOB!** **💥 Easy Access from Highway!** **.** Lincoln Street Salsa 1717 Brice Rd Reynoldsburg, Ohio 43215 **.** **ENTRANCE IS ON THE NORTH SIDE OF THE BUILDING** **Behind Anthony’s Pharmacy!** **.** **PLEASE SHARE and help get the word out!** **.** **🟣 Salsa, Bachata, and Merengue Dancing!** **.** **🟣** 8:00 pm – 8:30 pm **𝗥𝗲𝗴𝗶𝘀𝘁𝗿𝗮𝘁𝗶𝗼𝗻** **.** **🟣** 8:30 pm – 9:30 pm **𝗕𝗲𝗴𝗶𝗻𝗻𝗲𝗿 𝗗𝗮𝗻𝗰𝗲 Class!** **.** **🟣** 9:30 pm – 1 am **𝗢𝗽𝗲𝗻 𝗗𝗮𝗻𝗰𝗲 𝗣𝗮𝗿𝘁𝘆!** **.** **✅ Questions?** **Visit [LincolnStreetSalsa.com](https://columbussalsadancing.com/)** Or Text Todd: 614-774-8146 **.** **✅ No Experience Necessary!** **✅ No Partner Required!** **✅ Plenty of People to Dance With!** **.** **✅ $15 Cash / $16 Card** **✅ College Students $5 Off with Valid ID!** **✅ BYOB** **✅ Age 18+** **.** **✅ Lincoln Street Salsa is the perfect place for…** **.** **👉 Learning to Dance** **👉** Social Dancing **👉 Birthday Celebration** **👉** Bachelorette Parties **👉 Girl’s Night Out** **👉 Date Night** **👉** Getting Fit / Burning Calories **👉 Meeting New People** **👉** Having Fun, Fun, Fun! **.** ✅ **Questions?** Visit [LincolnStreetSalsa.com](https://columbussalsadancing.com/) Or Text Todd: 614-774-8146

**Community Dance – Every Friday at Unity of Columbus** Let go of the week’s stress and move into joy! Join us every Friday for an evening of community, connection, and dance at Unity of Columbus. It’s a chance to meet new friends, express yourself through movement, and experience the emotional healing that comes from music and rhythm. No dance experience needed — just bring your energy, an open heart, and your dancing shoes! Dance is freedom. Dance is healing. Dance is fun.

**New Dojo Location!** **Draft Day Columbus** 1130 Dublin Road Columbus, OH 43215 We're going to try a new dojo location for a few weeks and see how it works Dojos are informal Python group study sessions where everyone interested in Python gathers to learn about Python, help others with Python, or just hang out. Everyone is welcome from Python beginners to experts. Bringing a laptop is encouraged (we'll have extension cords and power strips). If there's something you want to learn leave a comment on this invite so we can plan ahead. We're looking for topic suggestions and people interested in presenting at our monthly meetings. To this end we've set up a survey form at [https://docs.google.com/forms/d/15eBKF1nQQ2XS5gzD4rvhVRHMBEj7lJtHuA9wXupS3Uc](https://docs.google.com/forms/d/15eBKF1nQQ2XS5gzD4rvhVRHMBEj7lJtHuA9wXupS3Uc)

Join us as we get together to get together to help those in need at this CMG Gives Back event! For this event, we’ll help prepare food, serve meals, assist residents, wash dishes and clean surfaces at Fath Mission – Grant Kitchen. We have a great little community of Movie Group friends so rather than see a movie this time, we’ll help “Create a better world” by helping serve those in need. Here are complete details and our plan for this event: FAITH MISSION – GRANT KITCHEN: The Faith Mission kitchen and dining room serves residents 3 meals a day, every day of the year. Our group will help prepare food, serve meals, assist residents in the dining room, wash dishes, and clean surfaces. PLAN: We will be preparing / serving / cleaning for BRUNCH from 10:30am to 12:30pm and have space for a total of 7 volunteers. Please arrive at 10:15am and wear closed-toe shoes and long pants. LOCATION: Faith Mission – Grant Kitchen is located at 245 N. Grant Ave. Enter the kitchen at Dock 1, indicated in the attached map. On-site and street parking are available in the surrounding area. Below are some links / attachments with additional info/details: \* LSS Volunteer Guidelines: Uploaded to photos. \* Parking Map Info: Uploaded to photos. \* LSS Faith Mission Orientation Video: https://www.youtube.com/watch?v=Bp46_6ay6iA \* Link with Additional Details / Info: https://lss.vomo.org/opportunity/faith-mission-grant-kitchen-2025 IMPORTANT REMINDER: Our group will be providing the all of the volunteers on this day so a firm RSVP count is essential. Please only sign up if you are certain you’ll be able to attend. If something unavoidable comes up, please update your RSVP no later than one week prior to the event. With very few exceptions, no shows or cancelations within 1 week of the event will not be eligible for future CMG Gives Back events. I appreciate your understanding as we try to ensure the agencies have the volunteers needed to provide the essential services they provide to the vulnerable population they serve. THANK YOU: This CMG Gives Back event provides an opportunity for YOU to get involved in helping others! Benefits go well beyond the help we give to others. Volunteering provides a wide range of personal benefits, including positive effects on mental and physical health, reduced stress/depression/anxiety, increased happiness and improved purpose, life-satisfaction and personal well-being! Plus, the opportunity to get involved, connect with others and help those in need. PARTNER AGENCY: This event is hosted by Lutheran Social Services (LSS), which serves thousands of people in need each day in 27 Ohio counties by addressing the four core societal issues of food, shelter, safety and healing. LSS offers food through the LSS Food Pantries, housing and supportive services through LSS Faith Mission and LSS Faith Mission of Fairfield County homeless shelters, domestic violence services through LSS CHOICES for Victims of Domestic Violence, senior living and health care, affordable housing communities, and other services that uplift families and strengthen communities. Look forward to seeing you there, Dan

[The Board Walks](http://www.theboardwalks.com/) are for curious people who love deep conversations. If that sounds like you, **bring a thoughtful topic** and join us for a 5-mile walk (10,000+ steps!). **HOW IT WORKS** **Step 1: Bring a topic** Before you arrive, think of **one** topic you want to explore. A question. A thought that's been on your mind. An obsession you want to geek out on. This is your ticket to the event. **Step 2: Circle up & share** We gather in a circle. Your friendly walk host gives a speech to set the tone. Everyone shares: your name, what you're grateful for, and your topic. That's it. 60 seconds. **Step 3: Walk, talk & float** We walk 5 miles. You naturally drift into conversation with 2-3 people at a time, pulled by topics that spark your curiosity. When you're ready to move on, just say: "I'm going to float!" **Step 4: Feel more alive** Two hours flies by. You're back where you started — but you feel different. More alive. More energized. More connected to yourself and others. That's why regulars join 20+ times. *For more details, read our [Orientation Guide.](https://www.theboardwalks.com/orientation)* **HOW TO BRING A GREAT TOPIC** A great topic = something you're genuinely curious about. Recent topics include: * "What are you passionate about right now?" * "What makes a good friend?" * "What's a belief you used to hold that you've completely changed?" * "How do you want to be remembered?" * "What would you do if money wasn't a factor?" Think of your topic like the dish you're bringing to our conversational potluck. If everyone brings an A+ dish (i.e. energizing, uplifting, expansive), we'll all walk away feeling lighter and brighter. **WHAT TO EXPECT** This isn't a fitness event with casual chitchat. It's a walking think tank where we explore life's big questions together, beyond small talk. *If you're looking for light banter or a standard networking event, this probably isn't the right fit.* But if you crave depth, genuine connection, and conversations that make you feel alive? You'll love it here. **FAQ** * Wear casual athletic attire and sneakers. It's a long walk! * We have multiple first-timers at each event. We work hard to create a welcoming, inclusive, clique-free space. * We welcome people of **all** ages, backgrounds, and industries who align with the [intention](https://www.theboardwalks.com/ground-rules) of this space. * Rain or shine, we've been out here nearly every week since July 2022. If the event is cancelled, we'll let you know. * Dogs, babies in strollers, parents, and friends are welcome — please text/email them the event link so they can RSVP and prepare a topic! **LOGISTICS** * If you'll arrive over 10 minutes late, we suggest skipping the event. It's hard to find us once we start walking, and your host can't answer messages during the event. * This walk is designed for everyone to *move together at the same steady pace* (about 20 min/mile). This format works best when the whole group moves in unison. If you have mobility limitations, we kindly encourage you to find an event better suited to your needs. * Read our [Orientation Guide](https://www.theboardwalks.com/orientation) for full details. * If you enjoy the event, send **[this](http://www.theboardwalks.com/)** to a friend or sign up for our **[newsletter](https://theboardwalks.beehiiv.com/)**. We're in multiple cities with more on the way. 🤠👋 **IF YOU WANT TO GO DEEPER...** [The Board](https://stan.store/ellebeecher/p/the-board) is the next step: a high-trust collective for renaissance people devoted to creating, connecting, and building lives that light us up. * This is a global HQ for people who crave big talk, deep connection, and dream collaborations with people across industries. If the walks feel like a spark... The Board is the fire. Apply [here](https://stan.store/ellebeecher/p/the-board).

If you are interested in selecting investment choices for your 401(k) or other workplace savings plan, minimizing your income tax liability, or identifying the most effective investments for your brokerage account, we are the group for you. We are a local chapter of Bogleheads**®**, whose investment strategy can be found here: https://www.bogleheads.org/wiki/Bogleheads%C2%AE_investment_philosophy Or you can peruse the Boglehead forum here: https://www.bogleheads.org/index.php I look forward to seeing you there. Mark Vonder Haar

(Note: RSVPing here on meetup does NOT reserve your seat. To do that, you’ll need to register at our website, **[HERE](https://www.coreerocks.com/Events.aspx?ID=Columbus-in-person-chapter-meeting-Your-2026-Buy-Box-Successful-Rentals-101-14-3-3-2026)**.) Let’s be honest. In 2026, you can’t use 2023 strategies and “hope” a deal works out. Demand for rentals, wholesale deals, retail deals, and even loans has changed, and that means that the most active, experienced investors have changed the way they do deals (and maybe even the kinds of deals they’ll do). Here at COREE, our job is to shortcut your learning curve by introducing you to the people and concepts you need to take the shortest path from here to financial freedom, and we think you’ll agree that this meeting is a no-brainer, if you’re serious about making wealth-building deals this year. Here’s the detailed agenda: From 6:00–7:00 p.m., From 7:30–9:00 p.m., Agenda: 5:00–6:00 p.m. Complimentary Light Dinner & Networking 6:00–7:00 p.m\*\*. New Investor Meeting: Basics of Making Money in Rentals with Vena Jones-Cox\*\*. If you’re planning to buy rentals today, you have to know how to evaluate the REAL income and expenses before you make an offer. If you’re new, you’ll finally understand how rentals really produce profit. If you’ve been around a while, you’ll see how today’s numbers change the math. 7:00 –7:30 **Buy-Sell-Trade (Members Only)** Bring your deals, money, buyer lists, referrals, and requests. Fast-moving. Bring flyers or business cards. Guests get a quick orientation with Executive Director Vena Jones-Cox. 7:30–9:00 p.m. **Main Meeting: Your 2026 Buy Box: What Experienced Investors are Buying in 2026 (and what they won’t touch).** Our panel of active, experienced investors will lay out their 2026 buy boxes. Not hypotheticals. Not “in theory.” What they are actually buying—and what they won’t touch. They’ll share: * What property types investors are actively pursuing * What strategies they’ve stopped using * The exact numbers they require before they say yes * How insurance, taxes, and rates have tightened the buy box * What instantly disqualifies a deal in today’s market * How to define your own 2026 buy box based on capital and risk tolerance Members and non-members at any level of knowledge and experience are welcome—as long as you’re serious about real estate, value experience-based, no B.S. education, and want to give as much as you get. Remember, to actually reserve your seat, you have to go **[HERE](https://www.coreerocks.com/Events.aspx?ID=Columbus-in-person-chapter-meeting-Your-2026-Buy-Box-Successful-Rentals-101-14-3-3-2026)** and register on our website!

**Google Analytics Alternatives** Is it finally time to make the switch away from Google Analytics? Two-and-a-half years ago Jason Packer asked this question at Columbus Web Analytics Wednesday. Since then: Google’s Universal Analytics has been sunset, we’ve changed our name to Columbus Data & Analytics Wednesday, and Jason has released two editions of his book “Google Analytics Alternatives”. Fresh off the release of the 2nd edition of his book, we thought it was time to re-open this conversation. While people love to complain about it, GA’s market share has remained relatively constant (at least in the United States). Why is that? You won’t find any complaints about GA4 in this talk, but rather an overview of what’s currently available in the market and how to frame your decision-making process. We’ll also be giving out some free copies of Jason’s book! So even if you’ve got a “GA4Lyfe” tattoo (no judgement), there’s free books to go with the free pizza and beer. Thanks to our 2026 sponsors: [Clarivoy](https://www.clarivoy.com), [What Box Consulting Group](https://www.whatboxconsultinggroup.com), [Conductrics](https://www.conductrics.com), and [Piwik PRO](https://piwik.pro) More info at [cbusdaw.com](https://cbusdaw.com)

Come join us for coffee at Matari Coffee to discuss our March book, "The Enchanted Greenhouse"! Book description: Terlu Perna broke the law because she was lonely. She cast a spell and created a magically sentient spider plant. As punishment, she was turned into a wooden statue and tucked away into an alcove in the North Reading Room of the Great Library of Alyssium. This should have been the end of her story . . . Yet one day, Terlu wakes in the cold of winter on a nearly-deserted island full of hundreds of magical greenhouses. She’s starving and freezing, and the only other human on the island is a grumpy gardener. To her surprise, he offers Terlu a place to sleep, clean clothes, and freshly baked honey cakes—at least until she’s ready to sail home. But Terlu can’t return home and doesn’t want to—the greenhouses are a dream come true, each more wondrous than the next. When she learns that the magic that sustains them is failing—causing the death of everything within them—Terlu knows she must help. Even if that means breaking the law again. This time, though, she isn’t alone. Assisted by the gardener and a sentient rose, Terlu must unravel the secrets of a long-dead sorcerer if she wants to save the island—and have a fresh chance at happiness and love.

Let's gather for lunch at Carfagna's followed by an optional stop in Carfagna's Market to check out the tastes and smells of Italy. Carfagna's address is 1440 Gemini Pl, Columbus, OH 43240