Last updated October 2026.
What is Lionshare?
Lionshare is a simple stock strategy built for growth, shared every week. Every Monday before the US market opens I publish the exact positions I hold with my own money, each with its weight and a stop. The record has been public on Dub since January 12, 2026. The weekend review is free for everyone. The Monday list is $39 a month or $350 a year.
Is the track record live, or a backtest?
Both, and they are different kinds of evidence. The live record on Dub is my own money, public and impossible for me to edit, running since January 12, 2026. As of October 9, 2026 it is up 109%, against about 13% for the broad market, with a 30% decline in June and July on the way. The test applies the stock picking to past prices from 2020 and holds the list every week. It made about 73% a year, with a worst decline of 38% and two losing years. The live record is the result that counts. A test is a simulation and never a promise.
What do I get in the paid Monday list?
The full list for the week. Every position with its exact weight and its stop level in a single table. Then what changed from last week and a plain read on the market. The free weekend review shows you the results before you ever pay.
How much time does it take each week?
About thirty minutes on Monday morning, placed by hand, or one slow coffee. The list lands before the open with every position, its weight and its stop, and placing those trades is the whole task. After that there is nothing to watch until the next Monday. Every step is in How a Monday works.
Which broker do you use?
My own account is on Alpaca, where a short program now places the list for me. Before that I placed it by hand at other brokers, and that took about thirty minutes. Any broker where you can buy US stocks and set a stop works, so you can most likely keep the one you already have. The weights are percentages, so they fit most account sizes, and a broker that takes orders in dollar amounts works from about $1,000. Some brokers do not accept a stop on a fraction of a share, so check that before you start.
What if I cannot trade right at the open?
The list is built for market orders at Monday's open, with the stops set at the same time, so nothing needs watching after. The list gives one stop price for each position for the week. If you place later in the day the prices will have moved, sometimes your way and sometimes against you. None of it is time-critical to the minute, since this is a weekly portfolio, but the closer you are to the open the closer your result tracks mine.
Who is behind Lionshare?
I write under my first name, Seb. I am not a fund manager or an adviser. I am an electronic engineer with a full-time day job, and an ordinary investor who found index funds too slow. For years I picked stocks and read the analysis services, and at one point I had nine indicators on a spreadsheet and picked whichever one agreed with me that morning. I wanted something I could test and anyone could check, so I built it. A few years of design, eight months of paper trading, then live with my own money on Dub on January 12, 2026. The record is public and it predates any subscriber.
What happens in a bad week?
You get the same email, written the same way. The weekend review reports the week down to the number and says what fell. My own money is down in those weeks too. In June and July, the worst stretch so far, every week went out on time and every loss was reported. The losing weeks sit on Dub next to the winning ones. The weekend review is free, so you can watch a bad week happen before you pay for anything.
Why is the list sometimes a single fund?
When conditions turn against stocks, the system steps out of them and puts the whole portfolio in one fund outside the stock market, such as commodities, gold or bonds. In testing that happened in about three weeks in ten, usually for a week or two at a time, and it can go in one Monday and out the next. The fund is a different position and it can fall too. It carries a stop like every other position.
Does the strategy work in a down market?
It was tested from 2020, through the crash that year and the decline of 2022. Its hardest stretches come when last year's fastest risers turn and fall, as they did in 2021 in the test and live in June and July 2026. It also lags in long, quiet markets. You can watch how it handles the next rough patch on Dub.
How concentrated is the portfolio, and how far can it fall?
Ten stocks most weeks, sized very unevenly on purpose. The largest position can be 30% of the portfolio and the top three usually hold about three quarters, so one company's bad morning can decide a week. In testing, a decline of about a fifth at some point was a normal year. The live portfolio had a 30% decline in mid 2026, and a future decline could be deeper. The exact weights are published every Monday, so you always see how much sits in each position.
Can I copy it on Dub instead?
You can. The same portfolio can be copied automatically on Dub, with nothing to place by hand. Dub's job for Lionshare is the public record, where I cannot edit it, and the copy feature is a secondary benefit. The tradeoff is precision and fees. Dub does not support stop orders, it updates on its own schedule and not at the market open, and its fees sit on top. The Monday list has the exact weights and the stops, and any broker that takes US stocks and stop orders works.
Do the rules change?
Yes. I keep working on the system, and when I find an improvement I test it across the whole period from 2020 before it goes live. I run it with my own money, so every improvement I make for myself reaches readers too.
Does Lionshare use AI to pick the stocks?
No. The weekly decisions come from fixed rules that I can test, and no AI makes them. I use AI to research and build improvements to those rules, and I decide what goes in. I watch over the process and can step in.
What about taxes and turnover?
I am not a tax adviser, so this is not tax guidance, only a description of how the strategy behaves. It changes as the scores change, so it turns over, and about once a month the whole portfolio moves between stocks and a fund. Most of the gains it books are short-term. The test figures are before any tax. What that means for your own situation is yours to work out, with someone who advises on it if you want.
What if you stop publishing, or the strategy stops working?
You can cancel anytime, so you are never locked in. If the strategy goes through a bad stretch you will read about it the same week it happens, on Dub and in the weekend review. Every position also carries its own stop, so you are never left holding something with no exit. My goal is to run this for many years on my own money. It is a project I have enjoyed building and intend to keep going.
If it works this well, why share it, and won't that erode the edge?
I built it for my own money and I run it either way. Sharing does not blunt it. It buys large, heavily traded companies. A capacity study on the spring 2026 version of the rules found the full return held to about $120 million in the portfolio, and fell after that. It has not been repeated on today's rules. The subscription pays for the work of publishing it every week.
How do I cancel my subscription?
One click from your Substack account settings, anytime. No phone call and no retention maze.
The full list goes to paying readers every Monday before the market opens. It is $39 a month or $350 a year, and you can cancel in one click. The weekend review is free for everyone.
Lionshare is a publication, not financial advice. What you do with your own money is your decision.