Amit Muni
Analyst · Bill Katz of Citigroup
Thank you, John, and good morning, everyone. Most of our operating data is already known, so I'll quickly go through the important numbers for the quarter.
Beginning on Slide 4. This quarter, we reported stable financial results. Our U.S. AUM grew to $44.4 billion at the end of the third quarter, primarily due to positive market movement. As the middle chart reflects, we had outflows in our currency-hedged and U.S. equity ETFs, which more than offset of inflows into our international and emerging market ETFs. As you can see in the chart on the right, outflows from DXJ and HEDJ expanded sequentially, along with continued pressure on the U.S. dollar.
Turning to the next slide, we can dig a little deeper into our flows. During the quarter, we saw a strong demand for our international, emerging markets, Europe and Japan small cap strategies, which had an aggregate inflows of $440 million. Our suite of emerging market ETFs successfully gathered assets, with inflows into 7 of 10 funds in that category.
The flows of these categories were diverse, with demand for broad EM as well as more focused EM strategies. In fact, 10 of our ETFs across a broad range of strategies saw greater than $25 million of inflows this quarter. We are encouraged by the continued success in diversifying our flows and stabilizing our asset base, as you can see on the next slide.
We continue to take steps to diversify and broaden our flows into products that fit broad asset allocation strategies in order to stabilize our asset base. As you can see from the chart on this slide, which we first shared last quarter, flows and AUM in our core strategic funds continue to grow. Flows into our core strategic funds generated more than $3.6 billion in net inflows since the start of 2016, representing a 14% annualized organic growth rate.
On an AUM basis, at the end of the first quarter of last year, 35% of our AUM were in core strategic funds. And today, we are at similar asset levels, but 50% of our AUM are in these core funds. Our initiatives around building ETF models and adviser solutions broadly will continue to help in our diversification efforts.
Turning to our non-U.S. business on Slide 7. Non-U.S. AUM rose 27% in the third quarter and is up 80% so far this year to just under $2 billion. This quarter, we generated $332 million of flows spread evenly across our Boost ETPs, European-listed UCITS and Canadian-listed ETFs.
Now turning to the financials beginning on Slide 8. GAAP net income was $8 million or $0.06 for the quarter, little change sequentially after adjusting for the unusual items and from the year-ago quarter. Higher average AUM across our U.S. and non-U.S. business platforms contributed to an increase in revenues, excluding the onetime gain in the previous quarter.
Turning to expenses on the next slide. Expenses are up 3.1% to $42.5 million. We accrued higher incentive compensation as we get closer to year end and have more visibility in what we believe our full year compensation will be. As you can see on the right, compensation as a percent of revenue for our U.S. business was 29.6% for the first 9 months of the year, which is within the 28% to 31% guidance range that we gave at the beginning of the year. In addition, we had higher fund management cost, driven by periodic taxes associated with 1 of our EM funds as well as higher average AUM.
Now turning to the margins on Slide 10. Gross margins decreased slightly, 2%, due to higher fund-related cost. We expect gross margins to be around these current levels as we look out over the remainder of the year. On the right, you can see our consolidated pretax margins were 26.7% in the third quarter compared to 27.1% in the previous quarter. And our U.S. margins were 33.4% after adjusting for the onetime gain.
Now to give you an update on where we are so far this quarter. As of yesterday, our U.S.-listed AUM is up to $45.8 billion, and we have seen October inflows of nearly $400 million.
This ends our formal remarks, and now we'll be happy to open up the call and take your questions.