DIX and GEX indicators

Two specific indicators, the Dix and the Gex, have been born from the investigations of SqueezeMetrics. They serve to monitor the behavior of short orders in the Dark Pools, which gives us an idea of the bullish sentiment of the real market:


These indicators are the way to get our analysis to incorporate the indications obtained in high frequency trading. For me they are a complement.

They are not easy to follow and extract conclusions right away, but sometimes they help. Specially to try to identify divergences. Below an example between GEX and S&P.

Mi primera onda de Elliot

Mi primera onda de Elliot que finalmente no cumple una de las tres normas de Elliot:

Las tres normas

  • 1ª norma: En un ciclo completo la onda 2 no puede retroceder a la 1 en su totalidad.
  • 2ª norma: En un ciclo completo la onda 3 nunca será la de menor recorrido entre las impulsivas (1 y 5).
  • 3ª norma: En un ciclo completo la onda 4 nunca tendrá como mínimo de cierre un precio inferior al del máximo de cierre marcado en la onda 1.

En la gráfica superior correspondiente al S&P de 2019.

  • Norma 1ª -> se cumple
  • Norma 2ª -> se cumple
  • Norma 3ª -> NO se cumple

Sigo aprendiendo sobre ondas de Elliot y sobre los detalles que hay que tener en cuenta en los comportamientos del mercado. Ahora el foco es:

  • Diferenciación de la compra por mano fuerte y compradores pequeños.
  • Identificación de volúmenes.

Wavlink WN519N2 Wi-Fi Repeater

To be able to configure to Wavlink WN519N2 Wi-Fi Repeater, you have to:

  • Plug in the electricity,
  • Press reset.
  • Connect to the Wavlink wifi that is available.
  • Enter in http://ap-setup.com/ (or
  • Enter default password “admin”
  • Enter into the “Repeater” wizard
  • Select the Wifi you want to connect and enter the password and the name of the repeater.
  • Connect to this new wifi net.
  • Select “Wifi” to set-up the network.
  • Change the password of your network
  • Enter into the http://ap-setup.com/ again and set-up a new password for the admin.
  • Done!

Kindle Direct Publishing (KDP)

How do I get my book published?

I have written a book, and I did not know how to publish it.

I was looking for an editor and an on-line editor and other alternatives like that. Finally I found Kindle Direct Publishing, and I started to work on it.

I did all in 5 days, ISBN number, correct the format, create a cover, set a price and request 5 copies for checking how they look like in the printed version.

The cost and the price

On Kindle you get 35% of the price of the kindle edition, on the printed book it’s the same.

The cost of the printed book varies depending on the amount of pages, the quality of the paper and if it has colors or just black/white. To me it was 2,5€.

You order, they print it

The traditional editors I have asked asked for 80%, so I would only take 20%. I understand this percentage, because they take the risk of printing a volume that they finally cannot sell.

Amazon does in a different way, they reduce this risk to zero, they just print what is ordered.

You can request my book in Australia, and you will have it at home in 24 hours (you can decide on which markets you want to publish it).

They just changed the rules of the game.

Everybody knows bookstores are in trouble, but editors are in trouble too

This is basically because they way Amazon sells and produce the books:

  • Minimizes the inventory,
  • the need of space,
  • the time to collect the book and send it to the buyer,
  • the risk of not selling XX copies of printed books.

Is there any other editor in the world doing publishing in the same way?


UIPath offers a community version of their RPA solution with the ability of building your own robots, and an environment to implement them.

RPA Starter + local tests

I have tried to see how it works. So create an user, download the developer GUI, complete “RPA Starter” course.

The tool is very complete and there are a lot of ways to learn, from the theory to the real situations you want to automate. There are different communities and forums to enable the different roles on automation to interact and learn from others.

The simple tests you can do are easy to perform and check.

The funding series of UIPath

  • In August 2015, UiPath closed an initial seed funding round of US$1.6 million led by the Earlybird Venture Capital, with Credo Ventures and Seedcamp as backers.
  • In April 2017, UiPath received $30 million investment in one of the biggest Series A rounds of funding in Europe, led by Accel. Previous investors Earlybird Venture Capital, Credo Ventures and Seedcamp also joined.
  • On March 6, 2018, UiPath received a $153 million investment from Accel, CapitalG, and Kleiner Perkins Caufield & Byers, valuing the company at $1.1 billion.
  • On September 18, 2018, UiPath raised $225 million in the funding round led by CapitalG and Sequoia Capital at a $3 billion valuation.
  • On April 30th, 2019, UiPath raised $568 million in a series D round of funding led by hedge fund Coatue Management, with participation from Alphabet’s CapitalG, Sequoia, Accel, Madrona Venture Group, IVP, Dragoneer, Wellington, Sands Capital, and funds advised by T. Rowe Price & Associates. The company also now claims a valuation of $7 billion.
  • To be continued (IPO comming??)


RPA on wordpress

There is still not an RPA that could be installed and run on WordPress. I hope very soon there is someone that works on that and enable the automation of processes!! Some years ago the existence of a e-commerce solution on WordPress was not possible, but today is a reality, a very strong competitor for small players.

Value Chain Analysis

To complement the Value Chain Maps or Wardley maps, I want to remind the details of these 3 steps, as they serve me to document in detail the situations and details related to the context:

  1. Activity Analysis.
  2. Value Analysis.
  3. Evaluate, change & plan action.

Post-mortem incident analysis

After having a priority 1 issue in production, we conduct a post-mortem analysis.

Some best practices (ground rules)

We try to see the issue as an holistic situation where we can learn more than expected.

From To
Seeking Single Root Cause for an outage Addressing the multiple systemic contributing factors to an outage
Prevention (only) Breaking down TTR (time to resolve components)
Blameful post-mortems Blameless post-mortems
Surface Level post incident reviews Strategic Level understanding and improvement

Mean Time to Recover (MTTR) Metric

MTTR = MTTD (Detect) + MTTI (Isolate) + MTTF (Fix)