$ 28,743,592 total loans $ 32,385,464 $ 29,053,935 $ 25,526,215 $ 23,675,706 $ 21,775,899 available-for-sale investment securities $ 2,741,847 $ 3,016,752 $ 3,335,795 $ 3,773,226 $ 2,626,617 total deposits , excluding held-for-sale deposits $ 35,439,628 $ 31,615,063 $ 29,890,983 $ 27,475,981 $ 24,008,774 long-term debt $ 146,835 $ 171,577 $ 186,327 $ 206,084 $ 225,848 fhlb advances $ 326,172 $ 323,891 $ 321,643 $ 1,019,424 $ 317,241 stockholders ' equity $ 4,423,974 $ 3,841,951 $ 3,427,741 $ 3,122,950 $ 2,856,111 performance metrics : return on average assets 1.83 % 1.41 % 1.30 % 1.27 % 1.25 % return on average equity 17.04 % 13.71 % 13.06 % 12.74 % 12.72 % net interest margin 3.78 % 3.48 % 3.30 % 3.35 % 4.03 % efficiency ratio 44.73 % 45.84 % 50.64 % 47.68 % 51.77 % credit quality metrics : allowance for loan losses $ 311,322 $ 287,128 $ 260,520 $ 264,959 $ 261,679 allowance for loan losses to loans held-for-investment ( 3 ) 0.96 % 0.99 % 1.02 % 1.12 % 1.20 % non-pci nonperforming assets to total assets ( 3 ) 0.23 % 0.31 % 0.37 % 0.40 % 0.46 % annual net charge-offs to average loans held-for-investment 0.13 % 0.08 % 0.15 % 0.01 % 0.18 % selected metrics : total average equity to total average assets 10.72 % 10.30 % 9.97 % 9.95 % 9.83 % common dividend payout ratio 17.90 % 23.14 % 27.01 % 30.21 % 30.07 % loan-to-deposit ratio 91.38 % 90.17 % 85.40 % 86.17 % 90.70 % capital ratios of ewbc ( 4 ) : total capital 13.7 % 12.9 % 12.4 % 12.2 % 12.6 % tier 1 capital 12.2 % 11.4 % 10.9 % 10.7 % 11.0 % cet1 capital 12.2 % 11.4 % 10.9 % 10.5 % n/a tier 1 leverage capital 9.9 % 9.2 % 8.7 % 8.5 % 8.4 % n/a — not applicable . ( 1 ) includes $ 31.5 million of pretax gain recognized from the sale of the dcb branches for 2018 . includes $ 71.7 million and $ 3.8 million of pretax gains recognized from the sales of a commercial property in california and ewis 's insurance brokerage business , respectively , for 2017 . includes changes in fdic indemnification asset and receivable/payable charges of $ 38.0 million and $ 201.4 million for 2015 and 2014 , respectively . the company terminated the united commercial bank and washington first international bank shared-loss agreements during 2015 . ( 2 ) includes an additional $ 41.7 million in income tax expense recognized during 2017 due to the enactment of the tax act . ( 3 ) total assets and loans held-for-investment include purchased credit-impaired ( “ pci ” ) loans of $ 308.0 million , $ 482.3 million , $ 642.4 million , $ 970.8 million and $ 1.32 billion as of december 31 , 2018 , 2017 , 2016 , 2015 and 2014 , respectively . ( 4 ) capital ratios are calculated under the basel iii capital rules which became effective on january 1 , 2015. prior to this date , the ratios were calculated under the basel i capital rules . the cet1 capital ratio was introduced under the basel iii capital rules . 31 2018 financial highlights we achieved strong earnings for the ninth consecutive year in 2018 . net income of $ 703.7 million in 2018 grew $ 198.1 million or 39 % from $ 505.6 million in 2017 . total revenue , or the sum of net interest income before provision for credit losses and noninterest income , of $ 1.60 billion grew 11 % year-over-year , primarily driven by an expanding net interest margin and robust loan growth . full year 2018 net interest margin of 3.78 % expanded 30 basis points year-over-year , from 3.48 % in 2017. revenue growth outpaced expense increases in 2018 , improving our operating efficiency . finally , net income growth in 2018 also benefited from a reduction in income tax expense related to the tax act . we earned a return on average assets ( “ roa ” ) of 1.83 % and a return on average equity ( “ roe ” ) of 17.04 % in 2018. on november 11 , 2017 , the bank entered into a purchase and assumption agreement to sell all of its eight dcb branches located in the high desert area of southern california to flagstar bank , a wholly-owned subsidiary of flagstar bancorp , inc. the sale of the bank 's dcb branches was completed on march 17 , 2018. the assets and liability of the dcb branches that were sold in this transaction included primarily $ 613.7 million of deposits , $ 59.1 million of loans , $ 9.0 million of cash and cash equivalents and $ 7.9 million of premises and equipment . the transaction resulted in a net cash payment of $ 499.9 million by the bank to flagstar bank . after transaction costs , the sale resulted in a pre-tax gain of $ 31.5 million , which was reported as net gain on sale of business as part of noninterest income on the consolidated statement of income . the 2018 eps impact from the sale of the dcb branches was $ 0.15 per share , net of tax . 32 noteworthy items about the company 's performance for 2018 included : earnings : full year 2018 net income of $ 703.7 million and diluted eps of $ 4.81 both increased 39 % , compared to full year 2017 net income of $ 505.6 million and diluted eps of $ 3.47 . strong returns on average assets and average equity during 2018 reflected our ability to expand profitability while growing the loan and deposit base . return on average assets increased 42 basis points to 1.83 % in 2018 , compared to 1.41 % in 2017 . story_separator_special_tag the changes in effective tax rates , as illustrated in the table above , were mainly due to the enactment of the tax act on december 22 , 2017. the tax act significantly changed u.s. corporate income tax laws by , among other things , reducing the u.s. federal corporate income tax rate from 35 % to 21 % effective january 1 , 2018 ; allowing the expensing of 100 % of the cost of acquired qualified property placed in service after september 27 , 2017 ; transitioning from a worldwide tax system to a territorial system ; imposing a one-time transition tax on the mandatory deemed repatriation of cumulative foreign earnings as of december 31 , 2017 ; and eliminating the carrybacks of tax credits and net operating losses ( “ nols ” ) incurred after december 31 , 2017 . in addition , nols incurred after december 31 , 2017 can not offset more than 80 % of taxable income for any future year , but may be carried forward indefinitely . asc 740 , income taxes , requires companies to recognize the effect of the tax act in the period of enactment . hence , such effects were recognized in the company 's 2017 consolidated financial statements , even though the effective date of the law for most provisions is january 1 , 2018. the sec staff issued staff accounting bulletin no . 118 to address the application of u.s. gaap in situations where a registrant does not have the necessary information available , prepared , or analyzed ( including computations ) in reasonable detail to complete the accounting for certain income tax effects of the tax act . based on reasonable estimates , the company recorded $ 41.7 million of income tax expense in the fourth quarter of 2017 related to the impact of the tax act , the period in which the legislation was enacted . this amount was primarily related to the remeasurements of certain deferred tax assets and liabilities of $ 33.1 million , as well as the remeasurements of tax credits and other tax benefits related to qualified affordable housing partnerships of $ 7.9 million . as a result , the effective tax rate increased to 31.2 % during 2017 , compared to 24.6 % in 2016. during 2018 , management finalized its assessment of the initial impact of the tax act , which resulted in an increase in income tax expense by $ 985 thousand during the same period ensuing from the remeasurements of deferred tax assets and liabilities . as most of the income tax effects of the tax act were recorded during 2017 , coupled with the lower u.s. federal corporate income tax rate , the effective tax rate decreased to 14.0 % in 2018 , compared to 31.2 % in 2017 . the overall impact of the tax act was a one-time increase in income tax expense of $ 42.7 million . management regularly reviews the company 's tax positions and deferred tax balances . factors considered in this analysis include the company 's ability to generate future taxable income , implement tax-planning strategies ( as defined in asc 740 , income taxes ) and utilize taxable income from prior carryback years ( if such carryback is permitted under the applicable tax law ) , as well as future reversals of existing taxable temporary differences . the company accounts for income taxes using the asset and liability approach , the objective of which is to establish deferred tax assets and liabilities for the temporary differences between the financial reporting basis and the tax basis of the company 's assets and liabilities at enacted tax rates expected to be in effect when such amounts are realized and settled . net deferred tax assets increased $ 20.2 million or 21 % to $ 117.6 million as of december 31 , 2018 , compared to $ 97.4 million as of december 31 , 2017 , mainly attributable to an increase in tax credit carryforwards as a result of the lower income tax rate . for additional details on the components of net deferred tax assets , see note 13 — income taxes to the consolidated financial statements . a valuation allowance is established for deferred tax assets if , based on the weight of all positive evidence against all negative evidence , it is more likely than not that some portion or all of the deferred tax assets will not be realized . a valuation allowance is used , as needed , to reduce the deferred tax assets to the amount that is more likely than not to be realized . management has concluded that it is more likely than not that all of the benefits of the deferred tax assets will be realized , with the exception of the deferred tax assets related to nols in certain states . accordingly , a valuation allowance has been recorded for these amounts . the company believes that adequate provisions have been made for all income tax uncertainties consistent with asc 740 , income taxes as of december 31 , 2018. the company is also evaluating the possibility of recording an uncertain tax position liability in 2019 with regards to its investments in mobile solar generators sold and managed by dc solar . for further information , see item 7. md & a — other matters . operating segment results the company organizes its operations into three reportable operating segments : ( 1 ) consumer and business banking ( referred to as “ retail banking ” in the company 's prior quarterly form 10-q and annual form 10-k filings ) ; ( 2 ) commercial banking ; and ( 3 ) other . the consumer and business banking segment primarily provides financial products and services to consumer and commercial customers through the company 's domestic branch network . this segment offers consumer and commercial deposits , mortgage and home equity loans , and

cash dividend : we increased our quarterly common stock dividend by 15 % to $ 0.23 per share from $ 0.20 per share in the third quarter of 2018 . operating efficiency : efficiency ratio , calculated as noninterest expense divided by the sum of net interest income before provision for credit losses and noninterest income , was 44.73 % in 2018 , an improvement of 111 basis points compared to 45.84 % in 2017 . the improvement in the efficiency ratio reflects revenue growth , driven by net interest income growth , exceeding noninterest expense growth during 2018 . tax : our full year 2018 effective tax rate was 14.0 % , resulting in tax expense of $ 115.0 million , compared to an effective tax rate of 31.2 % and tax expense of $ 229.5 million for the full year 2017 . the income tax rate for 2018 was positively impacted by the decrease in the corporate federal income tax rate to 21 % from 35 % , effective january 1 , 2018. replace_table_token_1_th 33 results of operations net interest income the company 's primary source of revenue is net interest income , which is the difference between interest income earned on interest-earning assets less interest expense paid on interest-bearing liabilities . net interest margin is the ratio of net interest income to average interest-earning assets .


 Write a concise suspicious activity report of the following text delimited by triple backquotes. Return your response as a formal report which covers the key points highlighting the location,dates,entity names and account holder information in chronological order of the text.
     ```cash dividend : we increased our quarterly common stock dividend by 15 % to $ 0.23 per share from $ 0.20 per share in the third quarter of 2018 . operating efficiency : efficiency ratio , calculated as noninterest expense divided by the sum of net interest income before provision for credit losses and noninterest income , was 44.73 % in 2018 , an improvement of 111 basis points compared to 45.84 % in 2017 . the improvement in the efficiency ratio reflects revenue growth , driven by net interest income growth , exceeding noninterest expense growth during 2018 . tax : our full year 2018 effective tax rate was 14.0 % , resulting in tax expense of $ 115.0 million , compared to an effective tax rate of 31.2 % and tax expense of $ 229.5 million for the full year 2017 . the income tax rate for 2018 was positively impacted by the decrease in the corporate federal income tax rate to 21 % from 35 % , effective january 1 , 2018. replace_table_token_1_th 33 results of operations net interest income the company 's primary source of revenue is net interest income , which is the difference between interest income earned on interest-earning assets less interest expense paid on interest-bearing liabilities . net interest margin is the ratio of net interest income to average interest-earning assets .
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 Suspicious Activity Report : $ 28,743,592 total loans $ 32,385,464 $ 29,053,935 $ 25,526,215 $ 23,675,706 $ 21,775,899 available-for-sale investment securities $ 2,741,847 $ 3,016,752 $ 3,335,795 $ 3,773,226 $ 2,626,617 total deposits , excluding held-for-sale deposits $ 35,439,628 $ 31,615,063 $ 29,890,983 $ 27,475,981 $ 24,008,774 long-term debt $ 146,835 $ 171,577 $ 186,327 $ 206,084 $ 225,848 fhlb advances $ 326,172 $ 323,891 $ 321,643 $ 1,019,424 $ 317,241 stockholders ' equity $ 4,423,974 $ 3,841,951 $ 3,427,741 $ 3,122,950 $ 2,856,111 performance metrics : return on average assets 1.83 % 1.41 % 1.30 % 1.27 % 1.25 % return on average equity 17.04 % 13.71 % 13.06 % 12.74 % 12.72 % net interest margin 3.78 % 3.48 % 3.30 % 3.35 % 4.03 % efficiency ratio 44.73 % 45.84 % 50.64 % 47.68 % 51.77 % credit quality metrics : allowance for loan losses $ 311,322 $ 287,128 $ 260,520 $ 264,959 $ 261,679 allowance for loan losses to loans held-for-investment ( 3 ) 0.96 % 0.99 % 1.02 % 1.12 % 1.20 % non-pci nonperforming assets to total assets ( 3 ) 0.23 % 0.31 % 0.37 % 0.40 % 0.46 % annual net charge-offs to average loans held-for-investment 0.13 % 0.08 % 0.15 % 0.01 % 0.18 % selected metrics : total average equity to total average assets 10.72 % 10.30 % 9.97 % 9.95 % 9.83 % common dividend payout ratio 17.90 % 23.14 % 27.01 % 30.21 % 30.07 % loan-to-deposit ratio 91.38 % 90.17 % 85.40 % 86.17 % 90.70 % capital ratios of ewbc ( 4 ) : total capital 13.7 % 12.9 % 12.4 % 12.2 % 12.6 % tier 1 capital 12.2 % 11.4 % 10.9 % 10.7 % 11.0 % cet1 capital 12.2 % 11.4 % 10.9 % 10.5 % n/a tier 1 leverage capital 9.9 % 9.2 % 8.7 % 8.5 % 8.4 % n/a — not applicable . ( 1 ) includes $ 31.5 million of pretax gain recognized from the sale of the dcb branches for 2018 . includes $ 71.7 million and $ 3.8 million of pretax gains recognized from the sales of a commercial property in california and ewis 's insurance brokerage business , respectively , for 2017 . includes changes in fdic indemnification asset and receivable/payable charges of $ 38.0 million and $ 201.4 million for 2015 and 2014 , respectively . the company terminated the united commercial bank and washington first international bank shared-loss agreements during 2015 . ( 2 ) includes an additional $ 41.7 million in income tax expense recognized during 2017 due to the enactment of the tax act . ( 3 ) total assets and loans held-for-investment include purchased credit-impaired ( “ pci ” ) loans of $ 308.0 million , $ 482.3 million , $ 642.4 million , $ 970.8 million and $ 1.32 billion as of december 31 , 2018 , 2017 , 2016 , 2015 and 2014 , respectively . ( 4 ) capital ratios are calculated under the basel iii capital rules which became effective on january 1 , 2015. prior to this date , the ratios were calculated under the basel i capital rules . the cet1 capital ratio was introduced under the basel iii capital rules . 31 2018 financial highlights we achieved strong earnings for the ninth consecutive year in 2018 . net income of $ 703.7 million in 2018 grew $ 198.1 million or 39 % from $ 505.6 million in 2017 . total revenue , or the sum of net interest income before provision for credit losses and noninterest income , of $ 1.60 billion grew 11 % year-over-year , primarily driven by an expanding net interest margin and robust loan growth . full year 2018 net interest margin of 3.78 % expanded 30 basis points year-over-year , from 3.48 % in 2017. revenue growth outpaced expense increases in 2018 , improving our operating efficiency . finally , net income growth in 2018 also benefited from a reduction in income tax expense related to the tax act . we earned a return on average assets ( “ roa ” ) of 1.83 % and a return on average equity ( “ roe ” ) of 17.04 % in 2018. on november 11 , 2017 , the bank entered into a purchase and assumption agreement to sell all of its eight dcb branches located in the high desert area of southern california to flagstar bank , a wholly-owned subsidiary of flagstar bancorp , inc. the sale of the bank 's dcb branches was completed on march 17 , 2018. the assets and liability of the dcb branches that were sold in this transaction included primarily $ 613.7 million of deposits , $ 59.1 million of loans , $ 9.0 million of cash and cash equivalents and $ 7.9 million of premises and equipment . the transaction resulted in a net cash payment of $ 499.9 million by the bank to flagstar bank . after transaction costs , the sale resulted in a pre-tax gain of $ 31.5 million , which was reported as net gain on sale of business as part of noninterest income on the consolidated statement of income . the 2018 eps impact from the sale of the dcb branches was $ 0.15 per share , net of tax . 32 noteworthy items about the company 's performance for 2018 included : earnings : full year 2018 net income of $ 703.7 million and diluted eps of $ 4.81 both increased 39 % , compared to full year 2017 net income of $ 505.6 million and diluted eps of $ 3.47 . strong returns on average assets and average equity during 2018 reflected our ability to expand profitability while growing the loan and deposit base . return on average assets increased 42 basis points to 1.83 % in 2018 , compared to 1.41 % in 2017 . story_separator_special_tag the changes in effective tax rates , as illustrated in the table above , were mainly due to the enactment of the tax act on december 22 , 2017. the tax act significantly changed u.s. corporate income tax laws by , among other things , reducing the u.s. federal corporate income tax rate from 35 % to 21 % effective january 1 , 2018 ; allowing the expensing of 100 % of the cost of acquired qualified property placed in service after september 27 , 2017 ; transitioning from a worldwide tax system to a territorial system ; imposing a one-time transition tax on the mandatory deemed repatriation of cumulative foreign earnings as of december 31 , 2017 ; and eliminating the carrybacks of tax credits and net operating losses ( “ nols ” ) incurred after december 31 , 2017 . in addition , nols incurred after december 31 , 2017 can not offset more than 80 % of taxable income for any future year , but may be carried forward indefinitely . asc 740 , income taxes , requires companies to recognize the effect of the tax act in the period of enactment . hence , such effects were recognized in the company 's 2017 consolidated financial statements , even though the effective date of the law for most provisions is january 1 , 2018. the sec staff issued staff accounting bulletin no . 118 to address the application of u.s. gaap in situations where a registrant does not have the necessary information available , prepared , or analyzed ( including computations ) in reasonable detail to complete the accounting for certain income tax effects of the tax act . based on reasonable estimates , the company recorded $ 41.7 million of income tax expense in the fourth quarter of 2017 related to the impact of the tax act , the period in which the legislation was enacted . this amount was primarily related to the remeasurements of certain deferred tax assets and liabilities of $ 33.1 million , as well as the remeasurements of tax credits and other tax benefits related to qualified affordable housing partnerships of $ 7.9 million . as a result , the effective tax rate increased to 31.2 % during 2017 , compared to 24.6 % in 2016. during 2018 , management finalized its assessment of the initial impact of the tax act , which resulted in an increase in income tax expense by $ 985 thousand during the same period ensuing from the remeasurements of deferred tax assets and liabilities . as most of the income tax effects of the tax act were recorded during 2017 , coupled with the lower u.s. federal corporate income tax rate , the effective tax rate decreased to 14.0 % in 2018 , compared to 31.2 % in 2017 . the overall impact of the tax act was a one-time increase in income tax expense of $ 42.7 million . management regularly reviews the company 's tax positions and deferred tax balances . factors considered in this analysis include the company 's ability to generate future taxable income , implement tax-planning strategies ( as defined in asc 740 , income taxes ) and utilize taxable income from prior carryback years ( if such carryback is permitted under the applicable tax law ) , as well as future reversals of existing taxable temporary differences . the company accounts for income taxes using the asset and liability approach , the objective of which is to establish deferred tax assets and liabilities for the temporary differences between the financial reporting basis and the tax basis of the company 's assets and liabilities at enacted tax rates expected to be in effect when such amounts are realized and settled . net deferred tax assets increased $ 20.2 million or 21 % to $ 117.6 million as of december 31 , 2018 , compared to $ 97.4 million as of december 31 , 2017 , mainly attributable to an increase in tax credit carryforwards as a result of the lower income tax rate . for additional details on the components of net deferred tax assets , see note 13 — income taxes to the consolidated financial statements . a valuation allowance is established for deferred tax assets if , based on the weight of all positive evidence against all negative evidence , it is more likely than not that some portion or all of the deferred tax assets will not be realized . a valuation allowance is used , as needed , to reduce the deferred tax assets to the amount that is more likely than not to be realized . management has concluded that it is more likely than not that all of the benefits of the deferred tax assets will be realized , with the exception of the deferred tax assets related to nols in certain states . accordingly , a valuation allowance has been recorded for these amounts . the company believes that adequate provisions have been made for all income tax uncertainties consistent with asc 740 , income taxes as of december 31 , 2018. the company is also evaluating the possibility of recording an uncertain tax position liability in 2019 with regards to its investments in mobile solar generators sold and managed by dc solar . for further information , see item 7. md & a — other matters . operating segment results the company organizes its operations into three reportable operating segments : ( 1 ) consumer and business banking ( referred to as “ retail banking ” in the company 's prior quarterly form 10-q and annual form 10-k filings ) ; ( 2 ) commercial banking ; and ( 3 ) other . the consumer and business banking segment primarily provides financial products and services to consumer and commercial customers through the company 's domestic branch network . this segment offers consumer and commercial deposits , mortgage and home equity loans , and

