Letters to both companies seen by Reuters on Thursday raise concerns about the impact Elon Musk's rocket and satellite communications company could have on other investors through its record-breaking $75 billion debut.

SpaceXs expected entry into the Nasdaq-100 could give Indian investors indirect exposure through Nasdaq-linked mutual funds. Jefferies says recent rule changes may allow faster…

(In first paragraph, corrects number of states challenging indexes to four from five)By Ross KerberJune 11 : Investment leaders from four large states pressed Nasdaq and FTSE…