It's exactly a major stake. They dropped from near 20 percent to 15 percent in 2017, remaining the largest shareholder just ahead of Nissan.
My point is simply that Brexit is not the only headwind about which Nissan is worrying. All car companies are facing a variety of headwinds and Nissan has the trouble with its partner on top of all that.
My guess is that Nissan, like everyone else, wants to know the deal under which it will be operating. Complete shut out, slightly less favorable enviroment, or no real change. The first is unlikely, and the costs of shifting major production are likely to outweigh the costs of a less favorable environment. If I were them though, I'd be talking up the costs of Brexit too because any sort of change is a damn nuisance for companies, especially for companies like Nissan facing profound uncertainties about their own basic structure.