So what will be the aftermath of this GME event?

These are simply my guesses, I don't actually know.

Wallstreet will likely push for licenses being necessary to trade, or put more limits on how many trades you can make, or some other way to screw the average person trading. 1/

@javia_savan You answered it yourself 🙂
Adjustment cost is way too high for bnf. Sometimes bnf does exceed nifty in vol crush, but nifty overall is more consistent.

Circle of Competence 101

Warren Buffett and Charlie Munger often reference the importance of knowing the boundaries of your circle of competence.

But what is a Circle of Competence and how does it work?

Here's Circle of Competence 101!

1/ First, a few definitions.

A Circle of Competence is the set of topic areas that align with a person's expertise.

If the entire world of information were to be expressed in a circle, an individual's Circle of Competence is the small sub-circle that represents their expertise.

2/ The idea surfaced in the 1996 BH annual letter.

"You don’t have to be an expert on every company...you only have to be able to evaluate companies within your circle of competence. The size of that circle is not very important; knowing its boundaries, however, is vital."

3/ A Circle of Competence is built over time.

It is built through experience, reading, dedicated study, and effort.

It is dynamic, not static.

It can expand as you deepen your knowledge in new areas. It can contract if you fail to nurture your existing areas of expertise.

4/ To engage this mental model in your life, there are two key processes to go through:

(1) Identify what falls within your circle
(2) Identify the boundaries of your circle

(1) is all about figuring out what you know, while (2) is about humbly admitting what you don’t.

Having now taken a few days to digest the detail of the UK-EU agreement, here's a couple of observations from me on the deal, what it means, how we got here, & where it might take future UK-EU relations.

(A long thread)

First, let's be clear that negotiating a deal in 9 months, against the odds, and in the middle of a pandemic, is an achievement. It's too easy to underestimate the difficulty of negotiating over the screen for 4 months, from Mar-June, and under enormous pressure. /2

Both @DavidGHFrost & @MichelBarnier and their teams, deserve a lot of credit for sticking up with it in hard circumstances, often with lacking political clarity, & high stakes.

This shouldn't preclude us, or MPs and MEPs, from looking critically at the deal on the table. /3

That we have a deal is a result of the UK & EU having found a way to protect their core defensive interests.

From the EU's view, integrity of the single market is preserved with level-playing field obligations which go virtually beyond any other 3rd-country (even the Swiss). /4

For its part, the UK has negotiated down EU ask on dynamic alignment on state aid; eliminated any references to EU law; removed any role for the ECJ (NB not in the whole future relationship, due to EU law in NI Protocol); and preserved its right to control access to waters. /5

In my 20 years of trading I have noticed this cycle play out again and again with traders that "make it":

1. Overconfidently reach for returns
2. Get humbled by the market
3. Simplify + concentrate on clear, high probability edges.

1/n

Nearly everyone starts with a lack of respect for how hard it is to consistently make money trading.

That leads them to pass over high-probability sources of returns in favor of more marginal ideas.

Or they overcomplicate the trading of a good edge.

2/n

Here's an example...

It is 2015. You look at a simple strategy.

You hold an equal dollar exposure to:
- Cap Weighted US Stocks (VTI)
- 20+ Yr US Treasury Bonds (TLT)
- Gold (GLD)

And rebalance each month.

(I've extended back a bit with mutual fund prices.)

3/n

It made money consistently with a few blips.

You'd have 4x your money from 1997 to 2015.

It makes sense. It's harnessing two big sources of risk premia (equity + duration).

It diversifies across 3 macro assets that tend to outperform in different econ environments

4/n

But, naturally, you turn your mind to how you could do better...

And here is where it gets dangerous!

There are good ways to try to "do better", and there are bad ways to try to "do better".

5/n

Many traders have no consistency when sizing their positions.

The pros have this down to a science.

Here's my dead simple, 3-step guide to position sizing (and to outperforming 99% of other traders in the process):

Step 1:

Define how much of your account you're willing to risk per trade.

Personally, I never risk more than 1% of my account equity.

If I have $100,000 account, I will never risk more $1,000.

This ensures I will never blow up my account on one single trade.

There are successful traders who risk 2-3% of their account per trade, but I find it most calming to risk 1% or less.

The first step in this process is completely up to you - only you can dictate how much risk you can tolerate.

Step 2:

Look for entries & exits that are within 5% (preferably less) of each other.

This means if I buy a stock & have a 5% stop loss, I can put a 20% equity position on & still be risking 1% of my equity.

Your account will thank you w/ 20% in a stock that goes up 100%.

Step 3:

Position size using this formula:

Total equity (100%) / Trade Stop Loss %

So, if your stop loss is 4%, here's the math:

100% equity / 4% stop loss = 25% Equity Position Size

(assuming 1% equity risk).

Here's another hypothetical calculation: