Amit Muni
Analyst · Citigroup
Thank you, Jason, and good morning, everyone. Most of our operating data is already known, so I'll quickly go through the important items for the quarter. I'll then turn the call over to Jono for some closing comments.
Beginning to Slide 3. This quarter, we reported improved financial and operating results which were signs that flows are stabilized and are starting to grow. Our U.S. AUM grew to $43.2 billion at the end of the second quarter due to positive inflows and market movement. As the middle chart reflects, we generated flows in most of all of our asset class categories, but experienced headwinds from DXJ outflows. As you can see in the chart on the right, the outflow trend in our 2 largest products seem to be stabilizing.
Turning to the next slide, we can dig a little deeper into our flows. Our smart data dividend products suite continues to grow. Our Dividend Growth Fund, DGRW, had a record inflow quarter and our MidCap Dividend fund, DON, continued its momentum and is just under $3 billion in AUM. In addition, in June, we cross-listed our Global ex-Mexico fund, XMX, on to the Mexican Stock Exchange and are pleased to already see nearly $50 million of flows into the fund. This fund is uniquely positioned to fill a need for the Mexican Institutional marketplace. In the alternative category, our Put/Write EPS strategy continue to gather inflows this quarter. In fact, 10 of our ETFs across a broad range of smart beta strategy saw greater than $50 million of inflows this quarter.
We are encouraged by these diversified flows as you can see further turning to Slide 5. Over the last 1.5 years, you heard us talk about the steps we are taking to diversify and broaden our flows into products that fit broad asset class -- asset allocation strategies in order to stabilize our asset base. As you can see from the chart on this slide, flows in AUM in our core strategic funds are continuing to grow. At the end of the first quarter of last year, 33% of our AUM were in core strategic funds. Today, we are at similar asset levels but 46% of our AUM are in these core funds. In fact, these core funds have generated more than $3 billion in net flows since the start of 2016, representing a 16% annualized organic growth rate. While we are still -- we still have continue to work to do in this area to increase the level of flows, we are pleased to see diversification efforts starting to take form.
Now turning to the financials on the next slide. GAAP net income was $12.1 million or $0.09 for the quarter. Excluding a one-time gain, adjusted net income was $7.8 million or $0.06 this quarter. We recorded an after-tax gain of $4.3 million associated with our ownership in Tradeworx, a trading and financial technology company that recently won the bid to build the Consolidated Audit Trail, which will be one of the largest databases ever created to track stock and option orders in U.S. market. Together with AdvisorEngine, we have a unique opportunity to collaborate with the technology leaders of both these organizations as we look for ways of using technology to deepen our relationship with advisors.
Turning to the next slide. Expenses were up 3.5% to $41 million due to higher compensation as a result of flow levels for the first half as well as marketing and sales as part of our growth spending. Compensation as a percent of revenue of our U.S. business was approximately 29% for the first half, which is within the guidance range we had given at the beginning of the year. Based on our current trends, we still expect to be in this range.
Turning to the next slide, you can see margins improved. Gross margins increased slightly to 82.4% due to higher average AUM and the full quarter effect of fund closures. We expect gross margins to be around these current levels. Note that we have slightly changed the way we calculate gross margins to only include advisory fee revenues in the denominator rather than total revenues. The prior periods, you can see in this chart, have been restated using this new method. On
the right you can see non-GAAP consolidated pretax margins stayed relatively constant at 27% over the first quarter.
Now turning to the next slide, we can view the highlights of our non-U.S. business. Non-U.S. AUM rose 42% so far this year to $1.5 billion, and total inflows were nearly $0.5 billion so far for the first half. We also have some exciting news around our Canadian business.
Turning to the next slide. Yesterday, we announced a strategic agreement with Questrade, the largest independent and fastest-growing online brokerage firm in Canada. Under our agreement, WisdomTree's Canadian ETFs will be commission free and get premier access on Questrade's trading platform. In addition, we will advise Questrade on how they can use WisdomTree ETFs to meet investment objectives in their fast growing robo-advisor. We also agreed to acquire Questrade 8 ETFs with approximately 7 million (sic) [ USD 71 million ] in AUM for $1.9 million in cash and merge them with our Canadian ETFs. This price may change based on the closing AUM.
There is no change to our previous guidance of $1 billion to $2 billion of AUM to get to breakeven. We are excited about this opportunity to partner with an entrepreneurial firm like Questrade and believe this will enable faster growth of our Canadian-listed ETFs.
Turning to the next slide, we can view our operating results so far this quarter. As of yesterday, our AUM was up to $44.1 billion and we're continuing to see diversified flows into several of our asset class categories. However, Hedged Europe is out of favor.
So in closing, over the last several years, we have made the right investments to address the changing competitive landscape and position us for the long-term. As our AUM grows from here, the operating leverage in the business will lead to strong results and improve margins.
Thank you and let me turn the call over to Jono.