Invesco Ltd. IVZ reported second-quarter 2018 adjusted earnings of 66 cents per share, in line with the Zacks Consensus Estimate. The figure was 3.1% above the prior-year quarter level.Results were primarily supported by higher revenues and a rise in assets under management (AUM). However, increase in operating expenses was an undermining factor.On a GAAP basis, net income attributable to common shareholders came in at $245.1 million or 59 cents per share, up from $239.6 million or 58 cents per share a year ago.Revenues & Expenses RiseGAAP operating revenues for the quarter were $1.36 billion, up 8.5% year over year. The figure lagged the Zacks Consensus Estimate of $1.40 billion. Adjusted net revenues increased 7.5% year over year to $974 million.Adjusted operating expenses were $597.4 million, up 8.5% from the prior-year quarter. The rise was due to an increase in all expense components.Adjusted operating margin for the quarter was 38.7% compared with 39.3% a year ago.Strong AUMAs of Jun 30, 2018, AUM was $963.3 billion, up 12.2% year over year. The acquisition of the Guggenheim Investments' ETF business added $38.1 billion in AUM during the reported quarter.Average AUM for the reported quarter totaled $973.9 billion, up 14.7% from the year-ago quarter. Further, the reported quarter witnessed long-term net outflows of $8 billion.Our ViewInvesco remains well positioned to benefit from improved global investment flows supported by a diversified footprint and product offering. Also, its inorganic growth strategy will drive growth.However, high-debt levels of the company might adversely affect its profitability in the long run. Also, as the company plans to repay a significant portion of amounts borrowed (to finance acquisitions), it has suspended share purchases. Mounting expenses will likely continue to hamper bottom-line growth to some extent.Invesco Ltd. Price, Consensus and EPS Surprise Invesco Ltd. Price, Consensus and EPS Surprise | Invesco Ltd. QuoteCurrently, Invesco carries a Zacks Rank #4 (Sell).You can see the complete list of today’s Zacks #1 Rank (Strong Buy) stocks here.Performance of Other Investment ManagersBlackRock’s BLK second-quarter 2018 adjusted earnings of $6.66 per share outpaced the Zacks Consensus Estimate of $6.60. Results benefited from an improvement in revenues, rise in AUM and steady long-term inflows. However, an increase in operating expenses acted as a headwind.The Blackstone Group L.P. BX reported second-quarter 2018 economic net income (ENI) of 90 cents per share, which handily outpaced the Zacks Consensus Estimate of 71 cents. The quarter saw a substantial jump in revenues and growth in assets under management, which was mainly driven by inflows. However, rise in expenses was the undermining factor.Ameriprise Financial Inc.’s AMP second-quarter 2018 adjusted operating earnings per share of $3.60 comfortably surpassed the Zacks Consensus Estimate of $3.51. Results benefited from an improvement in revenues. Also, growth in AUM and assets under administration supported earnings. However, a rise in expenses was an undermining factor.The Hottest Tech Mega-Trend of AllLast year, it generated $8 billion in global revenues. By 2020, it's predicted to blast through the roof to $47 billion. Famed investor Mark Cuban says it will produce ""the world's first trillionaires,"" but that should still leave plenty of money for regular investors who make the right trades early.See Zacks' 3 Best Stocks to Play This Trend >>Want the latest recommendations from Zacks Investment Research? Today, you can download 7 Best Stocks for the Next 30 Days. Click to get this free report Invesco Ltd. (IVZ): Free Stock Analysis Report Ameriprise Financial, Inc. (AMP): Free Stock Analysis Report The Blackstone Group L.P. (BX): Free Stock Analysis Report BlackRock, Inc. (BLK): Free Stock Analysis Report To read this article on Zacks.com click here. Zacks Investment Research