Kieran Duff
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Systematic Portfolio Manager 路 Live since April 2025

Systematic Trading. Written down as I go.

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Capital at risk. Past performance is not indicative of future results.
$2.5M Live capital
Apr 2025 Portfolio inception
+54.70% All-time return (gross)

As of 25 September 2026 · Before fees (gross) · USD

Performance 路 XAQP As of 25 September 2026 路 Before fees (gross) 路 USD
Sep (MTD) +6.05%
YTD 2026 +13.62%
All-time (since inception) +54.70%
Max DD (12m) −5.83%
Sharpe (since incept.) 3.67
Sortino (since incept.) 5.19
Capital at Risk. Past performance is not indicative of future results. Figures are before fees (gross), denominated in USD, and reflect the live track record of XAQP since inception on 28 April 2025, as managed under Darwinex (Tradeslide Technologies Ltd). Returns are gross of costs; actual investor returns will be lower after fees. Where a monthly return is shown, the corresponding YTD return is shown alongside it.
Latest Letter 027 · 24 Sep 2026

I’m the #1 Trader in the UK

Top of the UK table on annualised return, around seventh on absolute return, and the 7 or 8 years of discretionary trading that came before either.

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Letters & Notes View all →
L027 24 Sep I’m the #1 Trader in the UK L025 17 Sep The Fifty-Million-Dollar Question L024 14 Sep The ChatGPT Contract L023 10 Sep Knocked Off My High Horse L022 7 Sep The Hidden Hero L021 3 Sep Ablation Testing L020 27 Aug Drawdown Depth vs Duration
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Trading sessions, strategy builds, and whatever I am working on that week. Most of it goes out live.

LIVE: Algo Trading Session with a Systematic Portfolio Manager Live25 Sep 2026 LIVE: Algo Trading Session with a Systematic Portfolio Manager Live23 Sep 2026 LIVE: Algo Trading Session with a Systematic Portfolio Manager Live22 Sep 2026 LIVE: Algo Trading Session with a Systematic Portfolio Manager Live18 Sep 2026 LIVE: Algo Trading Session with a Systematic Portfolio Manager Live16 Sep 2026 Strategy Building: NDX in StrategyQuant X 15 Sep 2026 Strategy Building: NDX in StrategyQuant X 9 Sep 2026
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What people are saying

Thanks man. Really appreciate it. You're a big inspiration for why I went into algo trading.

D. Martin @dmartin_nq · via X

I've followed you since I learned you were also a Dante student. I really appreciate the time you take with everyone and Darwinex. You inspired me to re-open my old folders from 2018 and get back into automation alongside my discretionary trading. Trading is an insular game and I place zero faith in 99% of what I see, but I know a real one when I come across it.

Anonymous via X DM

Found you through @Trader_XO and immediately loved the content. I wish I could filter good content on X and avoid the noise!

Floppy22 @Sup2022a · via X

Well written guide for traders that want to dive into automated trading.

Algomatic Trading @AlgomaticTrade · via X

I am already at chapter 3, but man. This handbook is masterpiece. Thx

Mike | Prop Trading 馃嚨馃嚤 @MikePropTrade · via X
About

A systematic approach, in writing.

I manage systematic strategies with $2.5M in live capital. The portfolio went live on 28 April 2025. I'm starting to write the things I wish someone had told me at the start of my career, because they were not, anywhere, accessible.

If you can't write it down, you don't have a system.

The letters cover what I actually do: position sizing, risk allocation, drawdown management, regime detection, at the level of detail I'd want from someone years ahead of me.

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By subscribing you agree to receive the letter. Capital at risk. Past performance is not indicative of future results. Nothing in this letter constitutes investment advice or a solicitation.