Guillaume Serdan
Guillaume Serdan @Gserdan

Performance
All

-0.46%2026
2026
12.49%2025
2025
19.01%2024
2024
48.48%2023
2023
-29.22%2022
2022
24.33%2021
2021
46.25%2020
2020
34.36%2019
2019
10.60%2018
2018
-6.05%2017
2017
48.5%0%-48.5%
Discussions
Guillaume Serdan
Guillaume Serdan
United Kingdom
1d
⚙️ Why half this portfolio is now index funds If you copy me, twenty one trades reached your account this week. That is far more than usual, so here is what changed and the thinking behind it. The core of the book, the part held in broad index funds, has gone from about a third to half. The individual... Show More
Guillaume Serdan
Guillaume Serdan
United Kingdom
9d
⚡ Weekly Portfolio Update 28 August 2026 Hi everyone. A short one on the least interesting part of running this account, which is also the part doing most of the work. 📈 The core, and why it keeps growing On 25 August I consolidated the core into a single global index holding, $ISAC.L (iShares MSCI... Show More
Guillaume Serdan
Guillaume Serdan
United Kingdom
11d
📈 How I actually size positions Hi everyone. The question I get most often isn't "what do you buy", it's "how much". So here's the actual framework: • Core index ($ISAC.L): 30% target, sitting at 25% today after this week's consolidation. The part that makes boring... Show More
Guillaume Serdan
Guillaume Serdan
United Kingdom
13d
Edited
⚙️ Copying a Popular Investor: how it works Hi everyone. One topic, three points, no filler. A lot of you ask about the mechanics of copying. The platform handles the execution, so the experience is different from managing your own trades. Here are the three things that matter most for your account. First,... Show More
Guillaume Serdan
Guillaume Serdan
United Kingdom
15d
Edited
🛠️ Copier's Corner: The Rebalance Hi everyone. One topic, no filler. Questions I get in the comments sometimes are about how copying actually works on eToro, specifically, what happens to your account when I move the portfolio around. Since this is the most common point of confusion, I'm... Show More
undefined logo
GOOG
Alphabet
335.31
-3.77 (-1.11%)
Guillaume Serdan
Guillaume Serdan
United Kingdom
16d
⚡ Weekly Portfolio Update - 21 August 2026 Hi everyone. Markets spent the week debating whether the AI trade is a bubble or a transition. The volatility in chipmakers continues to be the main story, but the underlying numbers for the hyperscalers remain robust. I am watching the gap between capex and... Show More
Guillaume Serdan
Guillaume Serdan
United Kingdom
17d
🔍 Why I closed our bond position ($BLV (Vanguard Long-Term Bond ETF)), and what it taught me Hi everyone. Post-mortem time, because I learn more from exits than entries. We held $BLV as the portfolio's duration anchor - the theory: long bonds rally when growth scares hit, cushioning the equity... Show More
undefined logo
BLV
Vanguard Long-Term Bond ETF
65.83
0.0700 (0.11%)
Guillaume Serdan
Guillaume Serdan
United Kingdom
20d
📉 Why I am trimming my best position Hi everyone. One decision, explained properly. I said last Monday that I would trim towards my targets over the next few weeks. Here is the first one, and the reasoning behind it. I set myself a rule years ago: no single stock goes above 6% of my eToro book. $GOOG... Show More
undefined logo
GOOG
Alphabet
335.31
-3.77 (-1.11%)
Guillaume Serdan
Guillaume Serdan
United Kingdom
23d
🧮 The drift audit - four names over my own cap Hi everyone. One spreadsheet, four uncomfortable numbers. On Monday I said I'd trim towards my targets over the next few weeks. Before touching anything I checked every single-name position in the eToro book against my own 6% cap, because trimming... Show More
Guillaume Serdan
Guillaume Serdan
United Kingdom
27d
⚡ 3 things I'm watching this week Hi everyone. Monday quick hit, three things, no filler. Inflation lands Wednesday. Half past one, London time. The last print had prices up 3.5% over twelve months. The headline is not the point. What matters is what it does to the September conversation,... Show More

About Guillaume Serdan
United Kingdom
Strategy: Value

Long-Term Investing on Etoro since 2017 Accredited by CISI - Investment Management Level 4
Show Full Bio
1.2K Copiers
2.7M Followers

Similar Traders

Recently Traded

EWSP.AS
EWSP.AS
Opened•02/09/26, 14:19
▴0.29%
P/L
ISAC.L
ISAC.L
Opened•02/09/26, 14:19
▴0.99%
P/L
RMS.PA
RMS.PA
Closed•02/09/26, 14:14
▴-19.93%
P/L
BLK
BLK
Closed•02/09/26, 14:14
▴11.18%
P/L
DIS
DIS
Closed•02/09/26, 14:14
▴-7.63%
P/L