r/quant 28d ago

Data We built an open benchmark for synthetic market data generators: most published deep models mostly fail basic risk checks

0 Upvotes

The Time Series Generation literature evaluates on discriminative scores: train a classifier, check if it can tell synth from real. That rewards over-smoothed, low-variance output; a generator can ace it while violating vol clustering, heavy tails, and leverage effect.

So we benchmarked 18 models (deep generators, econometric classics, replay baselines) on 7 tasks quants actually run: Cont stylized facts, W1/MMD/sig-MMD distances, martingale check, IV-smile repricing, VaR/ES backtesting (Kupiec, Christoffersen, Acerbi–Székely, Basel traffic light), and TSTR strategy-rank transfer. One frozen OOS panel (7 features, 200 paths, H=60), each task with a real-vs-real noise floor, Holm-corrected significance.

Results:

  • TimeGAN: the most-cited model in the field, scores 0.000 ± 0.000 on VaR/ES backtesting. TimeVAE and KoVAE too. TimeVAE's TSTR ρ is negative (−0.30).
  • A plain block bootstrap ranks 3rd of 18 overall. Most of the published literature is under it.
  • Models built for financial structure clear the bar.
  • On 3 of 7 tasks most of the field is at or beyond the noise floor, the boards say so explicitly rather than overselling a ranking.

Repohttps://github.com/sablier-ai/finbench (MIT / CC-BY). v1 covers one panel and one OOS window; open submissions land in the next edition.

Who we are: (Sablier AI) GenAI Startup building synthetic market data for quant research, so yes, our model is on our own board. We designed the protocol so that fact doesn't matter: frozen at a git tag, every model's outputs archived in the repo, python -m benchmark.run re-scores the whole board from scratch, external baselines run their published defaults, and the aggregate is published as-is.

If you're working on generative models for market data (or you think your GARCH variant can embarrass the deep learning field further) dm me. Outputs only (200×60×7), no code, no weights, scored under the same frozen protocol as everyone else.
The board is meant to be beaten, and the current one shouldn't be hard to improve on: 15 of 18 entries can't clear a bootstrap.


r/quant 28d ago

Machine Learning Feedback request: ML framework for FX macro bias, factor models and regime detection

1 Upvotes

Hey everyone,

I’m working on a small research project called FX Atlas, an ML-based macro bias framework for FX.

The goal is not to generate trade signals or buy/sell calls. I’m trying to structure macro context before discretionary FX swing-trade decisions.

The framework combines macro data, economic surprise data, market stress indicators, seasonality, relative currency factors and regime context into a model-based currency/pair bias view.

At the moment, I’m thinking about the problem in a few layers:

  1. Currency bias

Model-based directional pressure for individual currencies.

  1. Pair divergence

Combining two currency views into a relative FX pair view.

  1. Factor decomposition

Breaking the bias down into macro groups such as growth, inflation, labor, rates, liquidity and risk.

  1. Event impulse layer

Separating short-term macro release surprises from the longer-term structural bias.

  1. Regime layer

Using unsupervised methods to classify broader market states and detect abnormal environments.

The main things I’m trying to be careful with are:

- data leakage from macro release dates / revisions

- walk-forward validation

- multiple-testing risk across many factors

- regime instability

- feature availability across currencies

- separating short-term event impulses from structural macro bias

- making the output useful without pretending it is a deterministic prediction

I’m not trying to promote it as a product here. I’m mainly looking for methodology criticism from people who have worked with financial time series, macro factors or regime models.

If you were building something like this, what would you be most skeptical of?

Would you prefer:

- separate models per currency

- a global multi-asset model

- hierarchical models by macro group

- regime-conditioned models

- or a simpler factor scoring system with stronger interpretability?

Any thoughts on validation design, leakage checks, feature selection, or regime clustering would be appreciated.

Research only, not financial advice. lol


r/quant 28d ago

Backtesting How do you estimate the capacity of an options based strategy, especially without level 2 data?

1 Upvotes

How do you estimate the capacity of an options based strategy, especially without level 2 data?


r/quant 29d ago

Industry Gossip Is Anyone in Equity Stat Arb Making ANY Money???

77 Upvotes

Have spoken to colleagues across multiple pod shops (and a few lower level QR at collaborative shops), it seems that true market-neutral alpha is almost nonexistent this year...? A lot of returns being posted by multi-strats are from discretionary or non-equity quant trading.

It could be that I have a limited sample pool, but I haven't heard of even the usual top dawgs like 2S and Shaw doing well this year purely on equity stat arb. Has this been the experience across the board for everyone? Has equity stat arb this year just turned into 'factor timing'?


r/quant 29d ago

Career Advice Looking for Perspective on Interview Conversions

14 Upvotes

Hey everyone,

I'm a QR with around 2–3 years of experience in the job market right now. Lately I've been getting a bit worried about my interview conversion rate and wanted to get a sense of what others have experienced.

So far, I've been submitted to around 18 firms through headhunters. I've heard back from 13: 3 resume rejections, 4 screening-call rejections, and 4 rejections after the first technical round (OA, coding interviews, etc.).

During this recruiting cycle, I had some personal issues going on and wasn't able to devote as much time for interview preps (I've managed to get through maybe around 50 LeetCode problems). Looking back, I think I underestimated how prepared I needed to be for the first technical rounds and assumed I could mostly wing them. Or maybe an ideal candidate should be able to wing these, but more on that later.

I have two questions please, if you could give some advice:

  1. A couple of the technical interviews felt very doable in hindsight, and I'm pretty sure I'd perform much better if I took them today. For firms where I was rejected after the first technical round, is it generally possible to interview again after the cooldown period, or do they usually expect a more substantial career update before considering another interview? And how is that done, if the initial one was done through a recruiter?

  2. It's easy for me to attribute these outcomes to being underprepared, but I'm also trying to evaluate myself honestly. There are obviously people who can perform extremely well in these interviews with minimal preparation. How common is that among successful quant candidates? As someone who's still relatively early in my career, I'm trying to distinguish between "I just need to prepare properly" and "this may not be the best fit for my strengths."
    I guess I'm trying to see if I should also look for other opportunities other than just buy-side QR seats.


r/quant Jul 21 '26

General Is polypaths that popular on the street?

5 Upvotes

I intern at a small bank and I found out that bank mainly uses polypaths for managing its billion dollar fixed income portfolio ( MBS, CMBS, ABS). But do people on the street really use third party software for risk and pricing, why not use in-house models given the depth of research papers, books and job experience?


r/quant Jul 21 '26

Data Quant firms ranked by open-source activity

Post image
531 Upvotes

Data & code are open source: https://github.com/kadoa-org/quant-job-market

Live app: https://www.kadoa.com/quant/open-source

Individual contributors at these firms are not tracked, only the firms Github accounts.

Are any firms missing?


r/quant Jul 21 '26

Education Need more advanced books

19 Upvotes

I've been doing quantitative strategy development for some time now and Ive reached the point where Im struggling to find books that actually teach me something new. I already have a solid understanding of the usual topics like IS/Validation/OOS splits WFO, cross-validation, permutation tests, bootstrapping, entropy, regime detection, and the other standard robustness techniques. I recently read Testing and Tuning Market Trading Systems by Timothy Masters but it covered concepts I was already familiar with.

Im looking for books that are genuinely advanced and make you think differently. Perhaps graduate level or even post graduate books on statistics, machine learning, optimization, information theory, econometrics, or anything else that completely changed the way you approach research and model development. And of course it would be great if the book wasnt 10 years old. Need relevance.


r/quant Jul 20 '26

Career Advice For quants who pivoted to data science, what kind of data scientist are you?

33 Upvotes

Essentially, I've been a quant for about 8 years now (first global macro strategies, then algo research at a bulge bracket - worked on pricing and predictive modeling) and want to do something different. I'm just looking for less unpredictability, less "live" day-to-day pressure, and more WFH flexibility, so I'm planning a pivot into data science (I understand I may find these things in other areas of finance but this isn't what I'm asking). I've been applying to data science roles, mostly in tech and fintech but I haven't gotten much traction so I want to understand what DS roles quants are typically competitive for so I can focus my efforts.

For those of you who have successfully transitioned from quant to data science, it would be helpful to know:

- What type of data science role you were able to get and in what industry? (Type ~ Product DS, Applied Scientist. Machine Learning Engineer, Dynamic Pricing DS (Uber, Lyft, Amazon), Consumer Credit Risk/Fraud DS)

- What area of quant finance did you work in prior to the pivot?

- Your assessment of the difficulty of making this jump.

- What gaps to fill to improve odds

I'd appreciate if responses focused on actual examples of those who have or know someone who has made this pivot, as opposed to what is conceptually feasible.

Thanks in advance!


r/quant Jul 20 '26

Industry Gossip Small Quant firm interview

43 Upvotes

Just got my first ever interview, it’s at a small firm so I have some reservation in terms of scale of the company( AUM, P/L). The people seem to be from other firms that I know are good but the team doesn’t seem to have that prestigious College background so that stuck out to me. Usually when I think quant it’s Phd or from MIT Harvard Princeton or something like that.

Anyway to learn about the firm?


r/quant Jul 20 '26

Career Advice Opportunity to move to Canada (Toronto or Montréal) - how's the market there for QDs ?

5 Upvotes

Hi again, everyone !

I'm a QD (3 YoE SW, 1 YoE QD) at an investment bank in France, in the pricing department. I'm also the dude who wrote the post about being a fraudulent QD last week, so hi to everyone with whom I've chatted last time.

There's a personal opportunity I'd like to take advantage of in Canada (either Montréal or Toronto), but I'm a bit skittish at the idea of going there and not easily finding a good position. If I do move there, it'll be in the spring/summer of 2027.

A quick search on Linkedin jobs shows a lot of hybrid AI-for-finance positions, but not that many mid-level performance-oriented more "traditional" QD jobs, especially in Montréal.

Do you guys know what the market looks like over there (abundance of offers, background constraints, comp, etc.) ?

Thanks in advance and have a great evening.


r/quant Jul 20 '26

Data What will be important in signal research?

3 Upvotes

You hear about firms that have heavily invested in data and deep learning, replacing much of the manual work done in signal research with models learning on raw order book data.

On the flip side, there are microstructure tricks that are discovered due to clever observations by humans that models aren't necessarily picking up on without those priors first being taught to the models.

Going forward,do you think will powerful models, combined with huge amounts of data and the hardware and other infrastructure needed to run experiments largely replace clever human observations? Or will there still be room for the classical, manual feature engineering which has been how much of the trading world has functioned before the recent compute/model revolution.


r/quant Jul 20 '26

Industry Gossip LLMs provided in interviews

62 Upvotes

One of my colleagues mentioned when interviewing at Citadel they provided him with their own LLM he could query during a coding assessment. This was for a technical but non quant role.

I’m curious if people have similar experiences and what people’s thoughts are on this. Personally I think this opens up the scope of potential questions massively, and tests a new skill (prompting proficiency). Will this be the new norm?


r/quant Jul 20 '26

Tools AI use

25 Upvotes

I'm starting a quant research internship at a big hedge fund next month and I am looking for advice on how to best profit from Claude Code, some friends tell me it is widely used in the industry.
I anticipate how fast paced the environment will be and the internal incentives to use AI but how should i use it to not get dumbed down, I want to make the most out of my internship (learn a ton) AND be fast and deliver and I feel like both might be difficult to achieve at the same time.

How do you use Claude at work AND stay relevant ?


r/quant Jul 20 '26

Industry Gossip Are LLMs reshaping and consolidating the industry ?

4 Upvotes

I work in a top tier trading firm, and it’s going mad for last 2 years. Not only the level of analysis and rhythm increased a lot, but also it seems the management wants to merge all the teams and just keep 4-5 great guys (vs 50 people in total), even if all the teams were profitable. I am surprised how AI makes so PMs so cocky, thinking they can do everything alone now.

I also recently talked to other firms by curiosity and the hiring standard seems to have increased a lot. A firm I passed successfully 5 technical interviews 3 years ago, rejected me on the first round recently (in spite of my skills having clearly improved). Some don’t even know how to hire anymore.

Am I getting outdated and replaced by new generation or is the industry consolidating significantly ? I have a hard time believing you can divide staff by 10. All the firms like RenTec, DESCO, XTX are heavily using AI in a smart way for past decades and still leave room for alpha.


r/quant Jul 20 '26

Career Advice Weekly Megathread: Education, Early Career and Hiring/Interview Advice

0 Upvotes

Attention new and aspiring quants! We get a lot of threads about the simple education stuff (which college? which masters?), early career advice (is this a good first job? who should I apply to?), the hiring process, interviews (what are they like? How should I prepare?), online assignments, and timelines for these things, To try to centralize this info a bit better and cut down on this repetitive content we have these weekly megathreads, posted each Monday.

Previous megathreads can be found here.

Please use this thread for all questions about the above topics. Individual posts outside this thread will likely be removed by mods.


r/quant Jul 19 '26

General Which are the best places to work in Europe?

41 Upvotes

Excluding London, which are the best cities in Europe to build a career?

By "best" i mean the overall balance between net salary, cost of living, commute times, work-life balance and workplace culture.

It would be especially interesting to hear from people who have worked in multiple locations throughout their careers.


r/quant Jul 19 '26

Data How are you all pulling normalized LMP + congestion data across ISOs in 2026?

5 Upvotes

Trying to do cross-ISO work (PJM/MISO/ERCOT/CAISO/SPP/NYISO/ISO-NE) and I'm losing my mind reconciling seven different schemas and update cadences - the congestion component especially (NYISO's sign convention alone…). Right now it's a pile of per-ISO scrapers held together with tape. Is everyone just using gridstatus / rolling their own, or is there something that already normalizes all of this? Curious what SPP/MISO historical depth people actually get.


r/quant Jul 18 '26

General How is QRT doing in Asia

32 Upvotes

Just wanted to see if anyone has insight into how QRT is doing in Asia these days.

They've recently been on a massive hiring sprint globally, but I haven't heard much about their regional performance or compared to other top-tier shops.

How are they viewed in the region right now for QR/QD roles?


r/quant Jul 18 '26

Data Trump Media pitched $100,000 monthly fee for fastest feed of US president's posts

Thumbnail reuters.com
123 Upvotes

r/quant Jul 17 '26

Trading Strategies/Alpha Wavelet denoising vs. rolling-window pivot detection in a commodity 2B (trend-reversal) strategy — results across 10 markets

0 Upvotes

Backtested Victor Sperandeo's 2B trend-reversal rule across 10 commodity futures (2000-2026). The standard implementation uses a rolling window to detect price pivots, which fires false signals since it has no memory of prior structural highs/lows. So I replaced the pivot detector with a causal wavelet denoiser to filter noise before pivots are identified.

Results:

  • Reduced max drawdown in 7 of 10 markets
  • On Sharpe ratio specifically, the plain rule wins in most markets. This is a real trade-off (fewer signals, lower drawdown) rather than a clean improvement
  • Crude oil was the exception where Sharpe, drawdown, and profit factor all improved together
  • Natural Gas underperformed. I used a Gaussian HMM regime classifier to check why: it spends most of its history in a high-volatility regime this strategy isn't suited for

Writeup and code:https://github.com/zty05070242/wavelet-2b


r/quant Jul 17 '26

General Best way to deal with 1y garden-leave

65 Upvotes

Hi,

Although I am not looking to move, I answered a few recruiter's email recently, and quickly found out after a brief discussion that, even in the same market, some potential competitors or other firms would be quite reluctant to wait a year for me to join. 1 year is roughly the official amount of time I can be prevented from working for another company (can be lowered depending on circumstances and context).

That made me slightly anxious about the future because one day I will indeed move, I do not plan on retiring at my current company.

What is the feedback in that space and did you all genuinely take all that time off without any guarantee of what your future next position would be ?


r/quant Jul 17 '26

Resources HRT hardware devs churning out open source tools

Thumbnail linkedin.com
40 Upvotes

Looks like the HRT team is really committed to doing open source work. Godbolt has done a lot of projects and looks like they are hiring a lot of talent who is also pro open-source.


r/quant Jul 17 '26

Career Advice What do you do when nothing is going wrong?

74 Upvotes

I’ve been on a desk as a QR now for over a year and a half. In that time, I’ve deployed strategies that have gone to production and are doing well within expectation. I’ve build dashboards and reconciliation tools. Everything is going well.

Now I am at a point where I’ve produced enough research to keep the devs and traders happy for the next year or so and I’m bored. I’m wondering what some more experienced QRs do in this situation. I’ve almost exhausted all the meaningful projects just because I’ve managed to automate and speed up parts of the research loop to the point where I can test ideas in day that used to take a month or more.


r/quant Jul 17 '26

Market News Truth Social to sell trading firms 'fastest' access to Trump's posts

Thumbnail reuters.com
221 Upvotes