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Mario Randholm

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Market Makers y ST Flows: Brexit / Gibraltar

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randholm
July 23, 2026 7:36 am / Published in * Randbots.com, Market Update
I keep thinking about my friend’s question. One point I didn’t mention is the counterparty in our trades. Can you choose/elect it? Original post in Spanish https://mariorandholm.substack.com/p/market-makers-y-flujos-brexit-gibraltar Market Makers and Flows: Brexit / GibraltarBy Mario Randholm The Great Advantage of Market Makers (MM) Over the Rest of the Market Most retail traders operate without considering
SPX

Do You Trade to Make Money, or to Be Right?

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randholm
July 12, 2026 3:01 pm / Published in Market Update
night dark moon visual art
I had a conversation that I haven’t stopped thinking about. Here you have it. A friend, sharp guy, does his homework, follows the market closely was walking me through his process. And somewhere in that conversation I realized I needed to share the one thing that separates the professionals from everyone else as market participants:

A Broken Market Is Defined by Expected Returns

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randholm
July 2, 2026 7:36 am / Published in * Blue Orbit, * R Option
Is the Market’s Beta Always 1? In my last post, I talked about how professional managers are seeing their portfolios “not following the script.” Last night, a friend, a great market scholar, pulled a chart out of his hat that sums it up perfectly. Thanks for sharing it. Historical correlations and betas are no longer

Trader’s Raw Truth: How to Cope When Markets Breaks

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randholm
June 30, 2026 3:08 pm / Published in Market Update
After more than 20 years in this field— following rules, refining systems, reading positioning, and navigating multiple crises — I am living through one of the toughest stretches of my career. I will explain why… Here is just an example: Key Big Tech (i.e. Microsoft) got crushed in ways we haven’t seen since 1999 or

The Hard Business of Profiting in the Stock Market

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randholm
June 25, 2026 1:33 pm / Published in Market Update
Yes, this is a special note on market structure and the raw reality of what it takes to make money in the stock market. It has always been difficult, and it remains difficult. Having real ground-level experience and emotional settlement is essential if you want to handle volatility without panicking or making emotional decisions. In

S&P 500, Negative for the Month So Far

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randholm
June 22, 2026 12:17 pm / Published in * Blue Orbit
With just under a week left until month-end, the S&P 500 closed last week in negative territory, down -1.05% MTD, as shown in the chart below. Will it manage to close June in positive territory? We know that the war(s), comments from the U.S. President, and statements from Warsh (Powell’s successor) generated some volatility last
FEDNDXSPX
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Mario Randholm Blog. Mario is the founder of Randholm & Co. S.A.C., an investment management company dedicated to producing superior returns for its clients and employees by adhering to mathematical and statistical methods.

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Disclaimer:

Risk Disclosure: Futures and forex trading contains substantial risk and is not for every investor. An investor could potentially lose all or more than the initial investment. Risk capital is money that can be lost without jeopardizing ones’ financial security or life style. Only risk capital should be used for trading and only those with sufficient risk capital should consider trading. Past performance is not necessarily indicative of future results.

Hypothetical Performance Disclosure: Hypothetical performance results have many inherent limitations, some of which are described below. No representation is being made that any account will or is likely to achieve profits or losses similar to those shown; in fact, there are frequently sharp differences between hypothetical performance results and the actual results subsequently achieved by any particular trading program. One of the limitations of hypothetical performance results is that they are generally prepared with the benefit of hindsight. In addition, hypothetical trading does not involve financial risk, and no hypothetical trading record can completely account for the impact of financial risk of actual trading. for example, the ability to withstand losses or to adhere to a particular trading program in spite of trading losses are material points which can also adversely affect actual trading results. There are numerous other factors related to the markets in general or to the implementation of any specific trading program which cannot be fully accounted for in the preparation of hypothetical performance results and all which can adversely affect trading results.

Testimonials Disclosure: Testimonials appearing on this website may not be representative of other clients or customers and is not a guarantee of future performance or success.

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This site is for informational purposes only. Nothing on this site should be considered investment advice or as a solicitation to buy or sell any security.

Past performance is no guarantee of future results.

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