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Here's a good business lesson to remember:

Competition is bad for margins.

[THREAD] 👇🏽
1/ Transdigm $tdg is a company that sells airplane parts.

You can see the 7 parties it sells to, with Boeing and Airbus making up 20% of total sales.
2/ Importantly, the company makes 60% of sales from aftermarket parts.

So if Delta has a 747 out of commission because of an ignition system breakdown, Transdigm will replace that part either directly or usually through an aftermarket distributor like Aviall (Boeing).
3/ Here's where it gets interesting.

90% of the parts Transdigm sells are proprietary and in 80% of the deals, the company is the sole supplier.

Couple this with a strong focus in the aftermarket and the picture becomes clearer.
4/ Going back to Delta, if that 747 breaks down, they MUST use Transdigm on that ignition system.

Transdigm was the SOLE supplier of that part for the OEM.

A 747 is $400 million, who CARES if you overpay to get a replacement part that allows you to keep running?
5/ This is exactly why margins are SO high, ESPECIALLY for a manufacturer.
6/ Before moving on, it looks like more than 75% of EBITDA comes from aftermarket.

That means aftermarket EBITDA margins must be higher than 50% (current EBITDA margins) b/c aftermarket only makes up 60% of sales and OEM sales are known to be lower margin.
7/ To get a better perspective on the power of playing where there is no competition, we'll compare Transdigm to Heico, another airplane parts manufacturer.

This is from Heico's 10-k.

It competes on price.
8/

Transdigm gross margins: 57%
Heico gross margins: 41%

Clearly, Transdigm has a pricing power advantage.
9/ Further, this gap is probably understated b/c Heico has a business segment that doesn't solely deal w/ aviation.

Below you can see that Heico's Flight group's EBIT margins are about 19% and "electronics" is about 30%. The latter likely raises overall gross margins.
10/ The point is: competition erodes margins.

Transdigm purposely makes parts and acquirers part makers where it can be the sole supplier.
/End

I'm not saying Heico $hei is a bad business. On the contrary, it's quite a good one.

The point is to illustrate the power of focusing on a niche with no competition.

Another disclaimer is Transdigm carries a lot of debt so net margins between the two are kinda similar.
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