In his early years (actually, straight through the early 1910s), Albert Einstein published a lot of papers in Annalen der Phyisk, a very old and prominent German scientific journal. However, this trend stopped around 1912-ish, and throughout the rest of his career, Einstein spread his wings and skipped around to a whole bunch of journals. Why did he make the switch? The Wikipedia page on Annalen der Physik notes that
In the 1920s, the journal lost ground to the concurrent Zeitschrift für Physik.
However, this is certainly later than 1912, and it seems that Einstein was responsible for much of Annalen der Physik's popularity in the early 20th century. Why didn't he stay with the journal?