Like @UncleWally, fell off my chair with the announcement and the premium. This was one of the first companies I bought after joining MF Pro 1.0, at that time, on pure blind faith. To this day, joining MF Pro 1.0 in 2015 was a life-changing decision.

If prices stay as they are, it will be a 3x spiffy pop day, and a roughly 10-bagger after holding for 9 years.

My millenial kids fell off their chairs this morning as well. This was a good lesson that Buffet-like long-term value investment, is still the way to go to greater riches, but patience, effort in understanding the business, and riding the ups and downs (for which in their world, is in serious short supply to none) is paramount to reaping that benefit over a long timeframe ...

Just checked Lakehouse's January Newsletter and Altium was their 5th largest holding which they have held for many years.

Just got home from a visit to the dentist and opened up my trading A/c and WOW alright!

I think I'm in shock.

I first bought ALU in Sept 2015 thanks to Joe Magyer and Matt Joas via my MF PRO subscription and added to it along the way. What a fantastic bit of stock picking that has turned out to be but, like @mikebrisy , @edgescape and @jayjayjayjay I'm totally torn here.

I'm pretty sure Lakehouse still Hold it so I'll keep a watching brief on any commentary that might come from there.

On one hand I'm being offered a great price here but on the other I'm going to have to let go of one of the very few high quality ASX companies I own. Altium has been part of the backbone of my portfolio for many years and I wasn't planning on changing that anytime soon. I'm pretty sure where ever I place the potential proceeds it's not likely to be in as high a quality company.

This is a tricky position to be in, a nice one though I think, but, what to do now?

Happy to hear other points of view!

My journey of close to 9 years with Altium, a cornerstone holding in my portfolio, has come to an end (very likely this deal gets over the line, or any improved offer from other parties in the unlikely event). It is comfortably my largest holding (21% of my ASX portfolio after today's jump) and biggest winner in my investing journey so far.

It is bittersweet, but regular followers will know based on past activity that an eventual takeover was on the cards with some big fish playing in this and adjacent spaces, and it is hard to argue that Renesas has not come in at an attractive premium.

How do you fill an Altium-sized hole in your portfolio, after paying the annoyingly huge CGT bill that will come due?