Check out the companies making the biggest moves premarket: BlackRock — The investment management company jumped more than 4.5% after it reported better-than-expected earnings. BlackRock delivered adjusted earnings of $13.91 per share, topping an LSEG estimate of $12.59Revenue also beat estimates. Pentair — Shares tumbled more than 14% after the water-treatment equipment maker issued preliminary second-quarter results that missed Wall Street expectations. The company said it expects adjusted earnings of $1.12 a share, well below the $1.48 analysts were expecting, according to FactSet. Morgan Stanley — Shares were up 1.5% after the bank delivered record quarterly revenues and profits in its second-quarter earnings report. Earnings came in at $3.46 per share compared to analysts polled by LSEG’s expectations for $2.94. Johnson & Johnson — Shares lost more than 1% in the premarket even after the pharma giant posted better-than-expected results for the second quarter. J & J earned an adjusted $2.90 per share on revenue of $25.31 billion. Analysts polled by LSEG expected a profit of $2.85 per share on revenue of $25.05 billion. PayPal — The digital payments platform surged 19% after Reuters reported that payments firm Stripe and private equity company Advent offered to buy PayPal for $53 billion. Citing two people familiar with the matter, Reuters said the deal would price PayPal at $60.50 per share, and that the of …