BlackRock (BLK) closed at $883.14 in the latest trading session, marking a +0.03% move from the prior day. The stock's change was more than the S&P 500's daily loss of 0.32%. Meanwhile, the Dow gained 0.16%, and the Nasdaq, a tech-heavy index, lost 0.85%.Prior to today's trading, shares of the investment firm had gained 3.11% over the past month. This has outpaced the Finance sector's gain of 2.55% and the S&P 500's gain of 1.52% in that time.The investment community will be closely monitoring the performan ...