our ability to achieve revenue growth in the future will depend , among other factors , on our ability to further penetrate existing markets ; our ability to expand our target addressable markets by developing new and innovative products ; and our ability to obtain design wins with device manufacturers , in particular manufacturers of set-top boxes , data modems , and gateways for the broadband service provider and pay-tv industries , manufacturers selling into the smartphone market , storage networking market , cable infrastructure market , industrial and automotive markets , and optical module and telecommunications infrastructure markets . products shipped to asia accounted for 81 % , 89 % and 93 % of net revenue during the years ended december 31 , 2018 , 2017 and 2016 , respectively , including 63 % , 71 % and 78 % , respectively , from products shipped to china . although a large percentage of our products is shipped to asia , we believe that a significant number of the systems designed by these customers and incorporating our semiconductor products are then sold outside asia . for example , we believe revenue generated from sales of our digital terrestrial set-top box products during the years ended december 31 , 2018 , 2017 and 2016 related principally to sales to asian set-top box manufacturers delivering products into europe , middle east , and africa , or emea markets . similarly , revenue generated from sales of our cable modem products during the years ended december 31 , 2018 , 2017 and 2016 related principally to sales to asian odms and contract manufacturers delivering products into european and north american markets . to date , all of our sales have been denominated in united states dollars . there is a growing portion of our business , related specifically to our high-speed optical interconnect products , that are shipped to , and are ultimately consumed in asian markets , with the majority of these products being purchased by end customers in china . a significant portion of our net revenue has historically been generated by a limited number of customers . in the year ended december 31 , 2018 , one of our customers , arris ( which entered into a definitive agreement to be acquired by commscope holding company , inc. ) accounted for 18 % of our net revenue , and our ten largest customers collectively accounted for 61 % of our net revenue . in the year ended december 31 , 2017 , one of our customers , arris , accounted for 25 % of our net revenue , and our ten largest customers collectively accounted for 58 % of our net revenue . in the year ended december 31 , 2016 , two of our customers , arris and technicolor , accounted for 37 % of our net revenue , and our ten largest customers collectively accounted for 74 % of our net revenue . sales to arris as a percentage of revenue include sales to pace , which was acquired by arris in january 2016 , for the year ended december 31 , 2016. for certain customers , we sell multiple products into disparate end user applications such as cable modems , satellite set-top boxes and broadband gateways . our business depends on winning competitive bid selection processes , known as design wins , to develop semiconductors for use in our customers ' products . these selection processes are typically lengthy , and as a result , our sales cycles will vary based on the specific market served , whether the design win is with an existing or a new customer and whether our product being designed in our customer 's device is a first generation or subsequent generation product . our customers ' products can be complex and , if our engagement results in a design win , can require significant time to define , design and result in volume production . because the sales cycle for our products is long , we can incur significant design and development expenditures in circumstances where we do not ultimately recognize any revenue . we do not have any long-term purchase commitments with any of our customers , all of whom purchase our products on a purchase order basis . once one of our products is incorporated into a customer 's design , however , we believe that our product is likely to remain a component of the customer 's product for its life cycle because of the time and expense associated with redesigning the product or substituting an alternative chip . product life cycles in our target markets will vary by application . for example , in the hybrid television market , a design-in can have a product life cycle of 9 to 18 months . in the terrestrial retail digital set-top box market , a design-in can have a product life cycle of 18 to 24 months . in the cable operator modem and satellite gateway sectors , a design-in can have a product life cycle of 24 to 48 months . in the industrial and wired and wireless infrastructure markets , a design-in can have a product life cycle of 24 to 60 months and beyond . for a discussion of specific risks and uncertainties that could affect our ability to achieve these and other strategic objectives of our acquisitions , please refer to part i , item 1a , “ risk factors ” under the subsection captioned “ risks relating to recent acquisitions . ” 47 critical accounting policies and estimates management 's discussion and analysis of our financial condition and results of operations is based upon our financial statements which are prepared in accordance with accounting principles that are generally accepted in the united states . story_separator_special_tag the ultimate realization of deferred tax assets is dependent upon the 51 generation of future taxable income during the periods in which those temporary differences become deductible . we continue to assess the need for a valuation allowance on the deferred tax asset by evaluating both positive and negative evidence that may exist . any adjustment to the net deferred tax asset valuation allowance would be recorded in the income statement for the period that the adjustment is determined to be required . on december 22 , 2017 , the tax cuts and jobs act , or the tax act , was enacted into u.s. tax law . also on december 22 , 2017 , the sec issued guidance in staff accounting bulletin no . 118 , or sab 118 , to address certain fact patterns where the accounting for changes in tax laws or tax rates under asc topic 740 is incomplete upon issuance of an entity 's financial statements for the reporting period in which the tax act is enacted . as permitted in sab 118 , in 2017 , we took a measurement period approach and reported certain provisional amounts , based on reasonable estimates , for certain tax effects in which the accounting under asc 740 was incomplete . such provisional amounts were subject to adjustment during a limited measurement period , not to extend one year beyond the tax law enactment date . we have completed the accounting required under asc 740 in a timely manner . stock-based compensation we measure the cost of employee services received in exchange for equity incentive awards , including restricted stock units and restricted stock awards , employee stock purchase rights and stock options , based on the grant date fair value of the award . we calculate the fair value of restricted stock units and restricted stock awards based on the fair market value of our common stock on the grant date . we use the black-scholes valuation model to calculate the fair value of stock options and employee stock purchase rights granted to employees . stock-based compensation expense is recognized over the period during which the employee is required to provide services in exchange for the award , which is usually the vesting period . we recognize compensation expense over the vesting period using the straight-line method and classify these amounts in the statements of operations based on the department to which the related employee reports . we calculate the weighted-average expected life of options using the simplified method as prescribed by guidance provided by the securities and exchange commission . this decision was based on the lack of historical data due to our limited number of stock option exercises under the 2010 equity incentive plan . we will continue to assess the appropriateness of the use of the simplified method as we develop a history of option exercises . recently adopted accounting pronouncements in may 2014 , the fasb , issued accounting standards update , or asu no . 2014-09 , revenue from contracts with customers ( topic 606 ) , which provides for new accounting guidance related to revenue recognition . this new standard replaced all prior u.s. gaap guidance on this topic and eliminated all industry-specific guidance . the new revenue recognition standard provides a unified model to determine when and how revenue is recognized . the core principle is that a company should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration for which the entity expects to be entitled in exchange for those goods or services . this guidance became effective for maxlinear on january 1 , 2018 and can be applied either retrospectively to each period presented or as a cumulative-effect adjustment as of the date of adoption . we applied the guidance prospectively with an adjustment to accumulated deficit for the cumulative effect of adoption . adoption of the amendments in this guidance accelerated the timing of our revenue and related cost recognition on products sold via some distributors , which changed from the sell-through method to the sell-in method under this guidance . we are also required to estimate the effects of pricing credits to our distributors from contractual price protection and unit rebate provisions , as well as stock rotation rights . we have completed our assessment of the impact of adopting this new accounting standard on our consolidated financial position and results of operations for the year ended december 31 , 2018 ; such impact is disclosed above , under the caption `` critical accounting policies—revenue recognition . `` the impact to accumulated deficit as of january 1 , 2018 was not material . as a result of applying the guidance prospectively with an adjustment to accumulated deficit in our consolidated financial statements for the cumulative effect of adoption , revenues that would have been recognized on a sell-through basis for the amount of deferred revenue and profit remaining as of the adoption date will not be recognized in earnings for any period . in january 2016 , the fasb issued asu no . 2016-01 , recognition and measurement of financial assets and financial liabilities . the amendments in this update include , among other things , a requirement to ( 1 ) measure equity investments ( except equity method investments ) at fair value with changes in fair value recognized in net income , with an option to measure equity investments that do not have readily determinable fair values at cost minus any impairment plus or minus any changes resulting from observable price changes ; previously changes in fair value were recognized in other comprehensive income , and ( 2 ) separately present financial assets and liabilities by measurement category and form of financial asset on the balance sheet or the accompanying notes to the financial statement . the amendments in this update were effective for us beginning in the first 52 quarter of fiscal

. net cash provided by operating activities consisted of positive cash flow from $ 100.3 million in non-cash expenses and $ 28.6 million in changes in operating assets and liabilities , partially offset by net loss of $ 26.2 million . non-cash items included in net loss for the year ended december 31 , 2018 primarily included depreciation and amortization of property , equipment , and acquired intangible assets of $ 79.0 million , stock-based compensation of $ 31.7 million , and impairment of intangible assets of $ 2.2 million , partially offset by deferred income taxes of $ 12.1 million and excess tax benefits on stock-based awards of $ 2.0 million . net cash provided by operating activities was $ 75.1 million for the year ended december 31 , 2017 . net cash provided by operating activities consisted of $ 89.8 million in non-cash operating expenses , partially offset by net loss of $ 9.2 million and $ 5.6 million in changes in operating assets and liabilities , respectively . non-cash items included in net loss for the year ended december 31 , 2017 primarily included depreciation and amortization expense of $ 66.7 million , stock-based compensation of $ 32.7 million , amortization of step-up to fair value of acquired inventory of $ 25.6 million , loss on foreign currency of $ 2.2 million , and impairment charges on intangible assets of $ 2.0 million , partially offset by deferred income taxes of $ 31.8 million and excess tax benefits on stock-based awards of $ 8.6 million . net cash provided by operating activities was $ 117.3 million for the year ended december 31 , 2016 . net cash provided by operating activities consisted of net income of $ 61.3 million , $ 48.2 million in non-cash operating expenses , and $ 7.8 million in changes in operating assets and liabilities .


 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.
     ```. net cash provided by operating activities consisted of positive cash flow from $ 100.3 million in non-cash expenses and $ 28.6 million in changes in operating assets and liabilities , partially offset by net loss of $ 26.2 million . non-cash items included in net loss for the year ended december 31 , 2018 primarily included depreciation and amortization of property , equipment , and acquired intangible assets of $ 79.0 million , stock-based compensation of $ 31.7 million , and impairment of intangible assets of $ 2.2 million , partially offset by deferred income taxes of $ 12.1 million and excess tax benefits on stock-based awards of $ 2.0 million . net cash provided by operating activities was $ 75.1 million for the year ended december 31 , 2017 . net cash provided by operating activities consisted of $ 89.8 million in non-cash operating expenses , partially offset by net loss of $ 9.2 million and $ 5.6 million in changes in operating assets and liabilities , respectively . non-cash items included in net loss for the year ended december 31 , 2017 primarily included depreciation and amortization expense of $ 66.7 million , stock-based compensation of $ 32.7 million , amortization of step-up to fair value of acquired inventory of $ 25.6 million , loss on foreign currency of $ 2.2 million , and impairment charges on intangible assets of $ 2.0 million , partially offset by deferred income taxes of $ 31.8 million and excess tax benefits on stock-based awards of $ 8.6 million . net cash provided by operating activities was $ 117.3 million for the year ended december 31 , 2016 . net cash provided by operating activities consisted of net income of $ 61.3 million , $ 48.2 million in non-cash operating expenses , and $ 7.8 million in changes in operating assets and liabilities .
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 Suspicious Activity Report : our ability to achieve revenue growth in the future will depend , among other factors , on our ability to further penetrate existing markets ; our ability to expand our target addressable markets by developing new and innovative products ; and our ability to obtain design wins with device manufacturers , in particular manufacturers of set-top boxes , data modems , and gateways for the broadband service provider and pay-tv industries , manufacturers selling into the smartphone market , storage networking market , cable infrastructure market , industrial and automotive markets , and optical module and telecommunications infrastructure markets . products shipped to asia accounted for 81 % , 89 % and 93 % of net revenue during the years ended december 31 , 2018 , 2017 and 2016 , respectively , including 63 % , 71 % and 78 % , respectively , from products shipped to china . although a large percentage of our products is shipped to asia , we believe that a significant number of the systems designed by these customers and incorporating our semiconductor products are then sold outside asia . for example , we believe revenue generated from sales of our digital terrestrial set-top box products during the years ended december 31 , 2018 , 2017 and 2016 related principally to sales to asian set-top box manufacturers delivering products into europe , middle east , and africa , or emea markets . similarly , revenue generated from sales of our cable modem products during the years ended december 31 , 2018 , 2017 and 2016 related principally to sales to asian odms and contract manufacturers delivering products into european and north american markets . to date , all of our sales have been denominated in united states dollars . there is a growing portion of our business , related specifically to our high-speed optical interconnect products , that are shipped to , and are ultimately consumed in asian markets , with the majority of these products being purchased by end customers in china . a significant portion of our net revenue has historically been generated by a limited number of customers . in the year ended december 31 , 2018 , one of our customers , arris ( which entered into a definitive agreement to be acquired by commscope holding company , inc. ) accounted for 18 % of our net revenue , and our ten largest customers collectively accounted for 61 % of our net revenue . in the year ended december 31 , 2017 , one of our customers , arris , accounted for 25 % of our net revenue , and our ten largest customers collectively accounted for 58 % of our net revenue . in the year ended december 31 , 2016 , two of our customers , arris and technicolor , accounted for 37 % of our net revenue , and our ten largest customers collectively accounted for 74 % of our net revenue . sales to arris as a percentage of revenue include sales to pace , which was acquired by arris in january 2016 , for the year ended december 31 , 2016. for certain customers , we sell multiple products into disparate end user applications such as cable modems , satellite set-top boxes and broadband gateways . our business depends on winning competitive bid selection processes , known as design wins , to develop semiconductors for use in our customers ' products . these selection processes are typically lengthy , and as a result , our sales cycles will vary based on the specific market served , whether the design win is with an existing or a new customer and whether our product being designed in our customer 's device is a first generation or subsequent generation product . our customers ' products can be complex and , if our engagement results in a design win , can require significant time to define , design and result in volume production . because the sales cycle for our products is long , we can incur significant design and development expenditures in circumstances where we do not ultimately recognize any revenue . we do not have any long-term purchase commitments with any of our customers , all of whom purchase our products on a purchase order basis . once one of our products is incorporated into a customer 's design , however , we believe that our product is likely to remain a component of the customer 's product for its life cycle because of the time and expense associated with redesigning the product or substituting an alternative chip . product life cycles in our target markets will vary by application . for example , in the hybrid television market , a design-in can have a product life cycle of 9 to 18 months . in the terrestrial retail digital set-top box market , a design-in can have a product life cycle of 18 to 24 months . in the cable operator modem and satellite gateway sectors , a design-in can have a product life cycle of 24 to 48 months . in the industrial and wired and wireless infrastructure markets , a design-in can have a product life cycle of 24 to 60 months and beyond . for a discussion of specific risks and uncertainties that could affect our ability to achieve these and other strategic objectives of our acquisitions , please refer to part i , item 1a , “ risk factors ” under the subsection captioned “ risks relating to recent acquisitions . ” 47 critical accounting policies and estimates management 's discussion and analysis of our financial condition and results of operations is based upon our financial statements which are prepared in accordance with accounting principles that are generally accepted in the united states . story_separator_special_tag the ultimate realization of deferred tax assets is dependent upon the 51 generation of future taxable income during the periods in which those temporary differences become deductible . we continue to assess the need for a valuation allowance on the deferred tax asset by evaluating both positive and negative evidence that may exist . any adjustment to the net deferred tax asset valuation allowance would be recorded in the income statement for the period that the adjustment is determined to be required . on december 22 , 2017 , the tax cuts and jobs act , or the tax act , was enacted into u.s. tax law . also on december 22 , 2017 , the sec issued guidance in staff accounting bulletin no . 118 , or sab 118 , to address certain fact patterns where the accounting for changes in tax laws or tax rates under asc topic 740 is incomplete upon issuance of an entity 's financial statements for the reporting period in which the tax act is enacted . as permitted in sab 118 , in 2017 , we took a measurement period approach and reported certain provisional amounts , based on reasonable estimates , for certain tax effects in which the accounting under asc 740 was incomplete . such provisional amounts were subject to adjustment during a limited measurement period , not to extend one year beyond the tax law enactment date . we have completed the accounting required under asc 740 in a timely manner . stock-based compensation we measure the cost of employee services received in exchange for equity incentive awards , including restricted stock units and restricted stock awards , employee stock purchase rights and stock options , based on the grant date fair value of the award . we calculate the fair value of restricted stock units and restricted stock awards based on the fair market value of our common stock on the grant date . we use the black-scholes valuation model to calculate the fair value of stock options and employee stock purchase rights granted to employees . stock-based compensation expense is recognized over the period during which the employee is required to provide services in exchange for the award , which is usually the vesting period . we recognize compensation expense over the vesting period using the straight-line method and classify these amounts in the statements of operations based on the department to which the related employee reports . we calculate the weighted-average expected life of options using the simplified method as prescribed by guidance provided by the securities and exchange commission . this decision was based on the lack of historical data due to our limited number of stock option exercises under the 2010 equity incentive plan . we will continue to assess the appropriateness of the use of the simplified method as we develop a history of option exercises . recently adopted accounting pronouncements in may 2014 , the fasb , issued accounting standards update , or asu no . 2014-09 , revenue from contracts with customers ( topic 606 ) , which provides for new accounting guidance related to revenue recognition . this new standard replaced all prior u.s. gaap guidance on this topic and eliminated all industry-specific guidance . the new revenue recognition standard provides a unified model to determine when and how revenue is recognized . the core principle is that a company should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration for which the entity expects to be entitled in exchange for those goods or services . this guidance became effective for maxlinear on january 1 , 2018 and can be applied either retrospectively to each period presented or as a cumulative-effect adjustment as of the date of adoption . we applied the guidance prospectively with an adjustment to accumulated deficit for the cumulative effect of adoption . adoption of the amendments in this guidance accelerated the timing of our revenue and related cost recognition on products sold via some distributors , which changed from the sell-through method to the sell-in method under this guidance . we are also required to estimate the effects of pricing credits to our distributors from contractual price protection and unit rebate provisions , as well as stock rotation rights . we have completed our assessment of the impact of adopting this new accounting standard on our consolidated financial position and results of operations for the year ended december 31 , 2018 ; such impact is disclosed above , under the caption `` critical accounting policies—revenue recognition . `` the impact to accumulated deficit as of january 1 , 2018 was not material . as a result of applying the guidance prospectively with an adjustment to accumulated deficit in our consolidated financial statements for the cumulative effect of adoption , revenues that would have been recognized on a sell-through basis for the amount of deferred revenue and profit remaining as of the adoption date will not be recognized in earnings for any period . in january 2016 , the fasb issued asu no . 2016-01 , recognition and measurement of financial assets and financial liabilities . the amendments in this update include , among other things , a requirement to ( 1 ) measure equity investments ( except equity method investments ) at fair value with changes in fair value recognized in net income , with an option to measure equity investments that do not have readily determinable fair values at cost minus any impairment plus or minus any changes resulting from observable price changes ; previously changes in fair value were recognized in other comprehensive income , and ( 2 ) separately present financial assets and liabilities by measurement category and form of financial asset on the balance sheet or the accompanying notes to the financial statement . the amendments in this update were effective for us beginning in the first 52 quarter of fiscal

