Three Premier League sides feature among the biggest transfer deals involving the Portuguese giants since they won the Champions League in 2004.
Since winning the Champions League back in 2004, the Portuguese side have made an estimated £440 million from deals involving players departing Estadio Dragao.
Though the sale of James Rodriguez to AS Monaco remains the biggest deal at an estimated £32 million, per Sky Sports, Manchester City's acquisition of Eliaqium Mangala is not far behind, with the Sky Blues shelling out £32 million last summer, as reported by the BBC.
Next up, on the Premier League front, is the deal that saw Manchester United shell out £26 million (the Telegraph) for Brazilian midfielder Anderson, who was released by the club last season.
That still ranks as the 7th biggest sum received by Porto since 2004.
Chelsea are next up, with the Blues paying the 9th and 10th biggest transfer fees for a player and also a fairly important manager.
Ricardo Carvalho cost Chelsea £20 million (the Independent) from Porto in the summer of 2004, while the Blues also had to spend big in order to prise Jose Mourinho away from the club.
Outside of the top 10, former Chelsea full-backs Paulo Ferreira and Jose Bosingwa feature in the to 20, having been purchased from Porto for £13.2 million (the BBC) and £16.2 million respectively (the BBC).
Manchester City recruit Fernando is also present as the club's 21st most expensive deal, after moving to the Etihad for £12 million (the Guardian).
You can view the full list right here.
With the top 25 commanding an average fee of around £17.5 million, it's easy to see why Porto continue to thrive.