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Stefan's Blog

Follow the blogs of our expert Stefan Schlamp, Head of Quantitative Analytics, about recent trends and developments in the market.

105 results
  1. Stefan's blog: Fantastic Beasts: The SMP^41

    Jan 26, 2026

    For the 6-year period 20200101-20251231, the title for "most SMP'd orders in a single event" (SMP: self-match prevention, i.e., order is deleted ... More

  2. Stefan's blog: One Billion, Two Billion, Test, Test

    Jan 19, 2026

    Warren Buffet gave a speech at my school once. Instead of the normal microphone tapping "1, 2, 3, test" he went "1 Million, 2 Million, test". From ... More

  3. Stefan's blog: Private-First Liquidity

    Jan 13, 2026

    One argument for private-first data dissemination is that it incentivizes liquidity provision through the information advantage that a passive ... More

  4. Stefan's blog: Real-Time HHI Value Added

    Jan 13, 2026

    EOBI release 11.0 in November 2022 introduced the dissemination of a market concentration metric in real-time for each level of the order book ... More

  5. Stefan's blog: You better double that, then double that again

    Dec 30, 2025

    It's been over 18 months since the introduction of the Xetra Retail Service on 20240520. Time to see how things are going. And there is no better ... More

  6. Stefan's blog: Biggie Smalls

    Dec 22, 2025

    There are a number of futures which exist in different sizes, i.e., the same underlier, same expiry, etc; just that one contract represents X ... More

  7. Stefan's blog: Fantastic Beasts - The Triple(Short)SyntheticMatchPaths

    Dec 16, 2025

    On the hunt for another elusive Fantastic Beast (the SyntheticSmp) I gut a false positive caused by MMP (market maker protection) quote ... More

  8. Stefan's blog: Trade Reversals

    Dec 8, 2025

    Stuff happens. There needs to be a mechanism to reverse (bust) trades after the fact - and there is. The EOBI real-time data feed even ... More

  9. Stefan's blog: Who Is Selling (Buying) in a Rising (Falling) Market?

    Dec 1, 2025

    For every buyer, there is a seller. And the population of buyers and sellers are different in terms of their classification ("trading capacity" - ... More

  10. Stefan's blog: Fantastic Beasts - The MidSweepSmpIceberg

    Dec 1, 2025

    I am always on the lookout for market data edge cases. And the more market models and features are operating side-by-side, the more exotic edge ... More

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