On the 27. 9. 2019, the MTA team specialized on natural language processing demonastrates our products on the Night of sicentists.

CYRRUS ADVISORY, in cooperation with Mendel University, develops Multicriterial Text Analysis Software. At the event we will present the outputs we have achieved. 

You can look forward to:


We look forward to seeing you on Friday, September 27, 2019, from 6:00 pm to midnight on Zemědělská 1, 613 00, Brno, Czech Republic, Building Q, 1st Floor, Laboratory Q13.

We have analysed thousands of mobile phone reviews, using our MTA software. We were primarily interested in the information on how users rate battery life or camera at a given type of a mobile phone.

However, from curiosity, we have evaluated how reviewers rate individual brands over time. Let’s find out what interesting information has followed from the statistics.

For example, Apple has maintained a high standard, and user satisfaction has been increasing slightly in recent years. In contrast, Samsung recorded a significant negative fluctuation, which, on the other hand, led to drawing level fast with Apple. In 2019, both brands are equal at around 70% of user satisfaction rate with their products.

The X-axis shows the ratio between positive and negative reviews. The sentiment was evaluated by using  Multicriterial Text Analysis software (MTA).

Looking at other brands, for instance, the ASUS mobile phones, in terms of user satisfaction, improved by almost 100% and already overtook Apple.

It is important to note that the comparison includes different target audience of both manufacturers. However, nothing is stopping us to make the same comparison between Samsung Galaxy Note 10+ and Apple iPhone XS models. We will soon offer this feature in our mobile application which is in the last stage of testing.

So far In 2019, the Czech reviewers have been most satisfied with phones from Google where the ratio between positive/negative reviews is 78%.

The chart below shows the overall review comparison of individual brands in the last 5 years. However, this is only an indicative illustration since we do not have a representative sample of acquired reviews of all brands.

On the other hand, the comparison of the biggest brands (measured with the largest number of reviews) has high information value.

For interest, we also show a chart that includes both metrics, the total number of reviews (the bubble size) and the ratio of positive and negative reviews within the total number of reviews (how high the bubble is placed).

Jiří Fuchs a Vladimír Vacula, CYRRUS ADVISORY, a.s.


Sorry, this entry is only available in Czech.

Read more at chip.cz

Our R&D team developing tools for asset optimization and management, cooperating with Mendel University in Brno has launched a new trading system based on long-term effects of contango decay and volatility lowering. The system composes synthetic short position via option contracts for underlying asset ETF UVXY. An alfa factor is formed with regular technical indicators calculated from five-minute bars.

The most difficult task in backtesting script development was to manage situation where the script takes values based on five-minute bars calculation but the trading trigger may occur at anytime (not at time five-minute bar closes only). The solution depends on dynamic bar creation which gradually collects the last bar data (every minute). The scripts looks at this bar as five-minute bar.

After the firts test, we made (consistent with our principles) optimization via parameter sweep. The fitting rapidly improved the performance and stability of the system (out-of-sample). Due to esotheric assets utilitization (as the options are) we proceed to the next step of our test – the paper trading. We have chosen the paper trading rather early because of option strategies difficulties. We have to face missing option data with interpolation and extrapolation of volatility surface with appropriate model. Simply said we will calculate the missing data but it is slightly time demanding.

All in all the next trading system was launched besides Momentum Formula, indeed temporary for testing regime only. Launch more than one trading system provide us valuable information for portfolio optimization.

We are going to report the performance and next development of the system through next posts.

Michal Dufek, Head of Financial Research Software Development

On July 31, 2019, a meeting of representatives of companies and universities took place in Bielefeld, Germany, on the premises of the Chamber of Commerce of East Westphalia.

The whole event was organized in the format of Barcamp, ie a conference with a free program focusing on current topics in business and digitization.

More than 70 participants from Germany, the Czech Republic, Slovakia and Estonia discussed topics such as investing in the digital era, the use of blockchain as a tool for transparent money transfers, data protection or smart cities.

The aim of the organizers was to combine students’ enthusiasm for new technologies and the experience of the representatives of large companies, which led to interesting discussions and brainstorming on future developments in digital services.

CYRRUS ADVISORY FRS (Financial Research Software) team took part in the discussion in the field of finding statistically relevant market situations, the alpha of investment strategies.

Jan Budík