The 25 Biggest Insider Purchases in October

4. BlackRock, Inc. (NYSE:BLK)

Who Bought Shares: Director William E. Ford

How Many Shares Were Bought: 2,000 @ $409.59 per share

Date of the Transaction(s): October 17

This was one of two 2,000-share blocks purchased by the BlackRock, Inc. (NYSE:BLK) director during October, which lifted his position to 9,466 shares, 7,000 of which have been bought in the past five months. BlackRock shares hit a 52-week low on October 24 and are still down by 15% since the beginning of October. BlackRock CEO Larry Fink wasn’t particularly pleased with the asset manager’s Q3 results, which included having its lowest quarterly long-term net inflows ($10.6 billion) in two years.