If Tehillim is said with the tzibbur in a minyan, even if they do not complete the book, kaddish should be said after the ‘Yehi Ratzon.’
Sources and Explanations
So writes the Mishnah Berurah 581:3.
From the sefer “Shaf Veyativ – Laws of Saying Tehillim” by Rabbi Shay Tahan, Chapter 3: Laws Before and After Saying Tehillim, Halacha 8 (p. 39 in the print edition). Translated from the Hebrew original.
