Read Time: 8 Minutes.

Part II – Hidden Biases in your trading

In Part One, we covered Confirmation bias, recency bias, the endowment effect, the groupthink bias and the gambler’s fallacy.

Today we’ll cover our final five, and I’ll provide you with a handy checklist so you can take 60 seconds and potentially stop yourself from rushing into something catastrophic.

6)    Hindsight bias

You could also call this one the “I knew it all along” effect. How many times have you heard someone say those words in life (not to mention in trading)?

I just knew Euro would fall after the ECB meeting.

Argh, I meant to go long on gold but didn’t get time. I knew it was going up.

We tend to believe that (of course much later than the event itself) that the onset of a past event was entirely predictable and obvious, whereas during the event we were not able to predict it.

Due to another bias (which we will not cover today) called “narrative bias” we tend to want to assign a narrative or a “story” to an event that allows us to believe that events are predictable and that we can somewhat predict or control the future. It allows us to try to make sense of the world around us.

How to overcome: Just stop pretending like you knew what was going to happen. If you didn’t put skin in the game, then you didn’t think it was going to happen!

7)    Overconfidence effect

Overconfidence as a trader allows us to believe that we are superior in our trading, which ultimately leads to hubris and poor decision making.

Whether it’s overconfidence on when to trade, what to trade (telling ourselves “sure I could normally trade AUDUSD, but why couldn’t I also be good at trading the South African rand?”) and how to trade a certain product.

We trade larger than we should, hold losers for longer than we should, relax our own risk management policy, become arrogant or complacent in our trading and this all leads to capital losses.

How to overcome: Ask yourself “What could I be wrong about” or “What makes me think I am far superior to all the others out there with this information”? The market will humble you eventually of course, but why not try to do it yourself before you shoot yourself in the foot?

8)    Anchoring

The first bit of information we hear is what we focus on.

If you ever need to negotiate with someone, you’ll be amazed at the power of anchoring with your first offer (Do try it sometime, just not with your friendly forex broker though ;-))

The same applies to trading. We hear a talking head on TV telling us about how the euro is overvalued and is heading for some drastic number that is streets away from today’s price. We can’t get that number out of our head even if we try.

Or let’s say we buy AUDUSD at .7100, close it at .7300 for a decent profit, happy days! The next week, it’s back at .7100 and we immediately are tempted to do the same again, because why not? It’s cheap again and we can repeat history. We rush into it, ignoring the technical break it’s just had or the negative sentiment on Australian Economic Data. We practically feel it’s a bargain at those levels.  

What do we do? The worst part is that we’re usually not even aware of how strong the influence is.

That’s the power of the anchor. We become attached to that information.  

How to overcome: This one is tough to overcome because studies show it can be so hidden in our subconscious without us knowing. Perhaps add to your trading checklist “Was this trade a result of an unknown anchor that I saw or heard?”

9) Consistency Bias

Like the sunk cost fallacy, we want to be consistent in our actions.

We’d hate for someone to say to us that we weren’t being fair or that last week we had said we’d do X and now had changed our minds.

Politicians do it all the time as they rigidly stick to a poor policy idea. They’d rather go down with the ship.

Traders are worse because our own desire to be consistent costs us money.

If I am known as a USD bear, and it’s rallying hard – I don’t want to look stupid or inconsistent. That’s why I keep staying bearish despite being 1000 pips from being right! It’ll come back we say. Everyone else is being stupid.

In 2009, 2010, 2011 and probably countless years since the financial crisis, people were always calling for the “double-dip” recession. I fell for it myself personally by believing them in 2009 and 2010 and staying too cautious when I should’ve thrown the house at buying stocks!

We want to feel in control. We want people to see our conviction, even if we’re wrong. Because this is a byproduct of confirmation bias, we’re not likely to seek disconfirming evidence of what we believe. We see what we want to see.

Why? Because sadly consistency is often associated with our intellectual and personal strength. Good traders should be seen as flexible. Open to the idea that they are probably wrong. Yet society thinks an inconsistent person is flaky, confused or a ‘flip-flopper’ on issues – even though we could all benefit from being open-minded to new ideas and opinions!

10) The Halo Effect

Last but not least - The halo effect is the final bias we’ll talk about today.

The halo effect means we let our overall impression of someone influence our thinking too greatly.

“But he’s so smart we say”

We idolise the opinions of the legendary hedge fund manager, Ray Dalio or the great investor of our time, Warren Buffet.

We see them on TV or in a Bloomberg article saying now is a buying opportunity or that it’s risk-off and we need to sell.

“If Buffet/Dalio/ is buying/selling now, I’ve gotta too,” we say in our head.

But how smart is that a strategy, really? What might he know that I don’t? What are his investment objectives versus mine? More important – how many times has he said this and actually been wrong?

We don’t know and we shouldn’t try to know. The halo effect blinds to sticking to our own plan and staying in our lane. The more we’re influenced by others, the harder trading becomes.

How to overcome: We must take the opinions of the so-called “Masters of the universe” with a grain of salt. They have different plans than we do. Information that we do or don’t have and so much more. Just because they’ve said this doesn’t make it come true. If only trading were that easy!

What do I do now?

OK, so I might have scared you. You are now jumping at shadows and questioning your own trading decisions, believing you have all these secret, hidden disadvantages that you didn’t have until 10 minutes ago.

Do not worry, biases can never be completely avoided. But we can work hard on challenging our opinions in order to make us more successful. Sometimes it’s just taking the time to stop and think.

To help you along the way, we’ve created a possible checklist for making better decisions in your trading.

So, stop, take a breath and ask yourself these 7 questions before you place your next trade.

What’s the rationale for taking this trade? List 3 for and 3 against.

How strong is the evidence behind my decision to trade?

What are the possible unknown unknowns?

Has the recency of information I’ve learned influenced my decision? If so, how much?

 Is this trade following the consensus of the crowd? If so, is that a good thing?

Did I hear this from a famous market commentator/investor? Why is that important?

 If none of questions 1-6 apply, then could any of the other biases above be at work?