Jorge Oscar Ramirez
Analyst
Thank you, Patricio. Good day, everyone. Turning to Slide 7. Our growth in our loan book decelerated to 10% sequentially and was stable on an FX neutral basis. Our ability to adopt a business model to a rapidly changing environment allowed us to expand our asset base 21% sequentially. As the Central Bank continue to unwind the LEBAC stocks, we captured the higher share of non-financial institution deposits, mainly Sight Wholesale Deposits to fund investments in the high-margin 7-day Leliq securities issued by Central Bank. Also, as Patricio mentioned earlier, minimum reserve requirements more than tripled [ on the portion of the above-mentioned Leliqs that were ] applied to meet minimum reserve requirements.
Moving on to Slide 8. In the retail environment, together with a heightened focus on asset quality, peso-denominated loans rose 4%, while FX currency loans measured in U.S. dollars were down 11%. In line with current market conditions, we continue to reduce our exposure to the Consumer Finance segment, which now represents less than 10% of our total portfolio compared to 11% in the second quarter and 12% in the first quarter. [ While we also have tightened credit scoring across segments, the higher share of corporate loans, which now represents 54% of the portfolio was mainly due to the combination of lower growth in Consumer Finance loans and the FX impact on U.S. dollar-denominated corporate loans. ]
Turning to Slide 9. Reflecting the FX dynamics, I just explained, the total corporate book was up 16% sequentially as reported, while our peso-denominated loans posted high single-digit growth. As we further tightened credit scoring standards, we're also experiencing deceleration in retail loans to 8% sequentially. We also saw lower demand for mortgage loans in the current environment. Our Consumer Finance loan portfolio contracted by 3% sequentially, as we continue to align our risk appetite to the current environment.
Finally, as we, kind of, stated in more detail in our earnings report, our portfolio remains well diversified across a broad range of economic sectors and highly optimized by keeping good collateralization levels.
Moving on to finally on Slide 10. We reported a one-off expansion of our deposit base, up 28% sequentially and significantly above industry growth. Mitigating the effects of current market dynamics, including neutral demand along with steep interest rate increases and higher non-remunerated minimum reserve requirements, we significantly expanded [ Sight ] Wholesale Deposits to fund investment in high-margin 7-day Central Bank securities. This further increase of almost 70% in specialty account deposits. The sale of foreign exchange deposits increased by 400 basis points sequentially to 33% of total deposits, reflecting a higher mix of U.S. dollar-denominated deposits and the sharp currency devaluation in the currency -- currency devaluation in the quarter, pardon me. Reflecting the strong expansion in deposits, the loan to deposits ratio adjusted down to almost 86%. Let me also call out that the current loans to assets, was down to 57% from almost 63% in the prior quarter, as a result of the increase in minimum reserve requirements and the investment in Central Bank securities.
As you can see in more detail on Slide 11, our Argentine peso-denominated deposit base increased 21% sequentially. As a result of the dynamics I just explained, the share of wholesale deposits rose to 41% this quarter from[ 26% ] in the second quarter. Retail and senior deposits represent a 40% share, while corporate deposits accounted for 29% of deposits. Noninterest-bearing deposits still account for a sizeable portion of our total deposits, representing 37%.
Moving on to P&L on Slide 12. Net financial income was up 21% sequentially, with net financial margin expanding 80 basis points to 11 -- to 18.2% in the quarter. Our strategy to invest in high-margin short-term Central Bank securities to mitigate the effects from recent steep interest rate increases on higher non-remunerated minimum reserve requirements resulted a NIM from our investment portfolio increasing to -- close to 37% from 25% in the prior quarter. This strategy more or less set softer margins [ from a banking business ] , which is impacted by [ last ] loan repricing, which resulted in a 160 basis point decline in loan portfolio NIM to 16.6%. Note, that net financial income from all foreign exchange operations resulted in a gain of ARS 285 million, our loan book [ effectively repricing, ] starting with the corporate portfolio. And we remain confident that as our portfolio reprices, our banking business will continue to gradually capture interest revenues from the higher interest rate environment.
Moving on to Slide 13. We saw soft growth from the net service fee income impacted mainly by lower fees charge this quarter as activity was interrupted by the weaker current environment. Income from insurance activities in turn were up 26% sequentially benefiting from easier comps, as the third quarter included onetime provisions to adjust to [ new regime ] under the guidelines.
Moving on to asset quality on Slide 14. We proactively took the decision to step up total coverage to 94% from almost 90% in the prior quarter and 85% year ago. Increasing coverage was mainly done in the Consumer Finance business, while coverage for our banking business stands relatively stable at higher levels of 129%. The increase in coverage drove up the cost of risk to 5.9% in the quarter from 5.6% in the second quarter. However, excluding the ARS 120 million in additional voluntary loan loss provisions, cost of risk would have been 5.3% slightly down sequentially and reaching 5.1% for the 9 months of this year.
We're also pleased to see that the initiatives implemented early in the year are delivering good results. The NPL ratio remain relatively stable sequentially and [ maybe a ] slowdown in loan growth as we further tighten credit scoring standards. In Consumer Finance, a contraction in loans to this customer base drove a 50 basis points quarter-on-quarter increase in this segment's NPLs. And while retail and corporate loans NPLs each rose 20 and 30 basis points sequentially, respectively, they still remain at historically low levels.
Taking a closer look at the retail book, the 90 days plus delinquency ratio of the blended book remains at 100 basis points below the NPL ratio.
Looking at asset quality for the Consumer Finance business as you can see on Slide 15, 3 months' vintage data shows a continued improvement in credit quality of new loans from ending March of this year and the tighter credit scoring in continuing third quarter. NPL creation of this segment also decreased sharply in the quarter and continued to decline in October, reflecting our initiative to tighter credit scores, which is turning in good results.
Now moving on to expenses on Slide 16. We delivered a sequential improvement of 700 basis points in the efficiency ratio, reaching 59.3%. Personnel and administrative expenses [ increased low inflation, reflecting ramification of cost cutting ] and containment measures along with our ability to quickly streamline the business. Importantly, we should achieve this even as we face additional personnel expenditures from the ramification of our Consumer Finance business, which resulted in nonrecurring cost of ASR 93 million for the quarter. We expect that some of these impacts will be offset through lower personnel cost in the 4Q '18. Excluding that [ we've got severance charges and additional headcount from the mission we acquired MILA and InvertirOnline, personnel expenditures would have increased almost 11% sequentially. ]
Next Slide 17. Our reported results creating profitability in the quarter, both sequentially and year-on-year. Higher net financial income was driven by investments in the high-margin Central Bank securities and the continued repricing of the loan book, principally in the corporate portfolio. This will offset the softer loan growth, [ lost ] loan repricing and our decision to reduce our exposure to the Consumer Finance [ segment in this context. ]
Stable loan loss provisions, excluding the additional provisions to step up coverage and effective cost controls that largely observe the costs incurred in the regularization of our Consumer Finance business also contributed to profitability. Return on average equity for the quarter reached 22.4%, recovering from a low of 12.6% in the prior quarter, while return on average assets improved sequentially to 2.7% from 1.8% in the second quarter.
Moving on to capitalization on Slide 18. We reported a consolidated performance Tier 1 capital ratio of 12.5% at the close of the quarter compared with 13.1% in June. This includes a 70 basis points impact on Tier 1 capital resulting from the sharp FX depreciation at the end of the quarter. A total of ARS 2 billion remain at the holding company for future capital injections. These includes ARS 100 million capital per division made this week in our auto loan subsidiary, MILA, and ARS 1 million injection plan for Banco Supervielle before year-end.
Moving to the outlook on Slide 19. We maintain our guidance for 2018. These includes loan growth in the range of 40% to 50% and most probably closer to the lower end of the range. Cost of risk between 4.6% to 5.1%, excluding the additional [ voluntary ] charges to step up coverage. NIM ranging between 18% to 20%, and efficiency ratio of between 59% to 63%. Attributable comprehensive income in the range of ARS 2.9 billion to ARS 3.3 billion, and the Tier 1 ratio between 12% to 13%. Note, we are keeping our guidance despite weaker market indicators for the year as per market consensus as you can see on this slide.
Our guidance is supported by the flexibility of our business volume to adjust to the rapidly changing market environment context and further supported by the possible results from recent correcting actions, including additional tightening of credit standards, cost-cutting measures and streamlining of the Consumer Finance operations. A gradual repricing of our portfolio that has captured the higher interest rate is also contributing to our expected performance.
In sum, we delivered solid results. The quarter was not without any challenges, but our team was up to the challenge as we regularly made adjustments to our business model. We need to continue to closely monitor credit quality as we're not expecting major positive shift in the near term. Our confidence in the corrective actions being undertaken will be successful. At that point, we will advance as a new and stronger financial institution.
We're now ready to take questions. Operator, please open the line for questions.