Michael G. O'grady
Analyst
Great. So obviously, difficult to predict where rates are going to go. And so if you do take it the way you asked the question of no change in rates, the way I look at it is by our earning asset categories. So on the loan front, we do continue to originate loans as loans roll off, and the trend has been that they're coming on at lower rates than what's rolling off. And you've seen that with a slow decline in the yield on the loan portfolio, which is now still over 2.5%. So it's the highest-yielding portion of the portfolio. But all the same, we've seen decline there. The securities portfolio, there, likewise, as securities roll off, the reinvestment rates are lower. Now we've moved our duration out as we've gone over time and did so again in the quarter here. So it moved from basically an index ratio of a year to about 1 year and 1 month. So just slightly moving it out, because there's obviously trade-offs in doing that, that's enabled us to at least slow the decline in the yield on the securities portfolio. And then deposits with banks, it's very much dependent on the shortest end of the curve, if you will, the overnight rates, and it depends on the currency. And so as long as it's U.S. dollar, the overnight rates have been relatively stable, and I think it's largely because the Fed has 25 basis points. But if you look over in Europe, we have seen a steady decline in overnight rates for the euro, but now they're at 3, 4 basis points. So it's -- we'd like to think less room to decline. In sterling, the short-term rates are closer to 50 basis points, and the Bank of England has not been as aggressive in their easing. If they were to change that, that's what would cause an impact. And then finally, as I mentioned in the comments, the Australian dollar, which yields a much higher rate but has been declining over the last several quarters. So those are some headwinds to the yield. We've been able to offset some of that with lower borrowing costs, essentially, in the rates that we pay on our deposits. But again there, there's just less room as we're closer to what appears to be the floor. And I guess I look at it, and if you just go back over the 4 quarters here, we've seen the NIM decline a couple of basis points on average over those quarters. Not knowing where rates are going to go, we think that we'll continue to pressure on our NIM.