On October 23rd, Tuesday, Pinduoduo (PDD.US) shares fell back after a sharp intraday rise. On the news, BlackRock (BLK. N) disclosed documents on October 21 showing that it increased Pinduoduo's holdings significantly from 29 million shares in the second quarter to more than 132 million shares, equivalent to 9.5% of Pinduoduo's total share capital. However, the documents disclosed by BlackRock (BLK. N) seem to be a "big oolong". BlackRock issued another announcement at about 11:35 pm on the 22nd...