in june 2011 , with the consent of ibg holdings llc and the company ( on its own behalf and acting as the sole managing member of ibg llc ) , ibg llc agreed to redeem certain membership interests from ibg holdings llc through the sale of common stock and to distribute the proceeds of such sale to the beneficial owners of such membership interests . on august 4 , 2011 , the company filed a `` shelf `` registration statement on form s-3 with the sec for the issuance of additional shares in connection with ibg holdings llc requesting redemption of a portion of its member interests in ibg llc . on august 4 , 2011 , a prospectus supplement ( file number 333-176053 ) was filed by the company with the sec to issue 1,983,624 shares of common stock in exchange for an equivalent number of shares of member interests in ibg llc . the company expects that future redemptions will be funded through the issuance of common stock . as part of a redeployment of the company 's capital to its shareholders , the company effected a series of dividend payments , including a dividend of $ 1.79 per share , which was paid to the company 's common shareholders in december 2010. during the second quarter of 2011 , the company declared and paid a cash dividend of $ 0.10 per share and has continued this quarterly dividend policy through the current fiscal year end and into the first quarter of 2012. we expect to pay a quarterly dividend of $ 0.10 per share to our common stockholders for the foreseeable future . business segments the company reports its results in two business segments , electronic brokerage and market making . these segments are analyzed separately as we derive our revenues from these two principal business activities as well as allocate resources and assess performance . electronic brokerage . we conduct our electronic brokerage business through our ib subsidiaries . as an electronic broker , we execute , clear and settle trades globally for both institutional and individual customers . capitalizing on the technology originally developed for our market making business , ib 's systems provide our customers with the capability to monitor multiple markets around the world simultaneously and to execute trades electronically in these markets at a low cost , in multiple products and currencies from a single trading account . we offer our customers access to all classes of tradable , primarily exchange-listed products , including stocks , bonds , options , futures , forex and mutual funds traded on more than 100 exchanges and market centers and in 19 countries around the world seamlessly . market making . we conduct our market making business through our th subsidiaries . as one of the largest market makers on many of the world 's leading exchanges , we provide liquidity by offering competitively tight bid/offer spreads over a broad base of over 867,000 tradable , exchange-listed products . as principal , we commit our own capital and derive revenues or incur losses from the difference between the price paid when securities are bought and the price received when those securities are sold . because we provide continuous bid and offer quotations and we are continuously both buying and selling quoted securities , we may have either a long or a short position in a particular product at a given point in time . our entire portfolio is evaluated each second and continuously rebalanced throughout the trading day , thus minimizing the risk of our portfolio at all times . this real-time rebalancing of our portfolio , together with our real-time proprietary risk management system , enables us to curtail risk and to be profitable in both up-market and down-market scenarios . 42 business environment the global financial markets were impacted by several events throughout 2011 which drove exchange-traded options volumes and volatility levels higher , contributing to market conditions that enhanced our results in both the electronic brokerage and market making segments . the first part of the year was relatively subdued until the earthquake and tsunami in japan caused a brief spike in trading and volatility levels . then , in august , a series of economic news items shook the markets and caused volatility levels to remain elevated for several weeks . these developments included the u.s. government credit rating downgrade by standard & poor 's , ongoing concerns over european government debt and the threat of credit rating downgrades across the euro zone . in addition to higher volatility and trading volumes , bid/offer spreads in exchange-listed options also widened meaningfully from the historically low levels of the prior year when high frequency trading activity peaked . the improvement in these conditions benefited our market making trading gains and also increased commission revenues in the brokerage segment , as our customers took advantage of periods of higher volatility . our reputation for being one of the lowest cost brokers that provides high quality executions and state-of-the-art trading technology continued to spread , mostly by word-of-mouth . our customer accounts grew by 20 % in 2011. mf global 's collapse during the fourth quarter raised new concerns amongst investors over the safety and security of their assets . we took this opportunity to review our procedures for protecting customer assets and our automated risk controls that are designed to minimize the risk of large customer losses . to further enhance protection of our customers ' assets , ib llc sought and received approval from finra to perform the securities reserve computation on a daily basis instead of once per week , as prescribed by the rules . ib llc initiated daily computations in december 2011 , along with daily adjustments of the money set aside in safekeeping for our customers . story_separator_special_tag market data fees are fees that we must pay to third parties to receive streaming quotes and related information . 47 employee compensation and benefits employee compensation and benefits includes salaries , bonuses and other incentive compensation plans , group insurance , contributions to benefit programs and other related employee costs . occupancy , depreciation and amortization occupancy expense consists primarily of rental payments on office and data center leases and related occupancy costs , such as utilities . depreciation and amortization expense results from the depreciation of fixed assets such as computing and communications hardware as well as amortization of leasehold improvements and capitalized in-house software development . communications communications expense consists primarily of the cost of voice and data telecommunications lines supporting our business including connectivity to exchanges around the world . general and administrative expenses in this category are primarily incurred for professional services , such as legal and audit work , and other operating expenses such as advertising and exchange membership lease expenses . income tax expense we pay u.s. federal , state and local income taxes on our taxable income , which is proportional to the percentage of ibg llc owned by ibg , inc. our subsidiaries are subject to income tax in the respective jurisdictions in which they operate . non-controlling interest we are the sole managing member of ibg llc and , as such , operate and control all of the business and affairs of ibg llc and its subsidiaries and consolidate ibg llc 's financial results into our financial statements . we hold approximately 11.5 % ownership interest in ibg llc . ibg holdings llc is owned by the original members of ibg llc and holds approximately 88.5 % ownership interest in ibg llc . we reflect ibg holdings llc 's ownership as a non-controlling interest in our consolidated statement of financial condition , consolidated statement of comprehensive income , consolidated statement of changes in equity and consolidated statement of cash flows . our share of ibg llc 's net income , excluding ibg holdings llc 's non-controlling interest , is approximately 11.5 % and similarly , outstanding shares of our common stock represent approximately 11.5 % of the outstanding membership interests of ibg llc . certain trends and uncertainties we believe that our continuing operations may be favorably or unfavorably impacted by the following trends that may affect our financial condition and results of operations . over the past several years , the effects of market structure changes , competition ( in particular , from hfts ) and market conditions have , during certain periods , exerted downward pressure on bid/offer spreads realized by market makers . retail broker-dealer participation in the equity markets has fluctuated over the past few years due to investor sentiment , market conditions and a variety of other factors . retail transaction volumes may not be sustainable and are not predictable . 48 in recent years , in an effort to improve the quality of their executions as well as increase efficiencies , market makers have increased the level of automation within their operations , which may allow them to compete more effectively with us . there has been increased scrutiny of equity and option market makers , hedge funds and soft dollar practices by the regulatory and legislative authorities . new legislation or modifications to existing regulations and rules could occur in the future . if there is consolidation among market centers this may adversely affect the value of our smart routing software . a driver of our market making profits is the relationship between actual and implied volatility in the equities markets . the cost of maintaining our conservative risk profile is based on implied volatility , while our profitability , in part , is based on actual volatility . hence , our profitability is increased when actual volatility runs above implied volatility and it is decreased when actual volatility falls below implied volatility . implied volatility tends to lag actual volatility . see `` risk factors `` in part i , item 1a of this annual report on form 10-k for a discussion of other risks that may affect our financial condition and results of operations . non-gaap financial measures non-gaap measures are used to isolate items that the company 's management views as non-operating in nature , which is intended to give a clearer presentation of operating results . given its material impact on our reported financial results , the following non-gaap measure is presented for 2010 : in december 2010 , we effected a series of dividend payments , culminating in a cash dividend of $ 1.79 per share , which was paid to holders of ibkr common stock . in total , ibg llc paid out about $ 1 billion . funding for this dividend originated with our swiss company , which paid a dividend to ibg llc , its parent company . ibg llc , in turn , paid a dividend to its members , including interactive brokers group , inc. , the public company . on a consolidated reporting basis , these dividends had no effect on the company 's reported income . however , the original dividend from the swiss company was made from earnings that were not previously taxed in the u.s. as a result , this triggered a u.s. federal income tax liability for the company , which is reported as income tax expense in the consolidated statement of comprehensive income . this income tax liability was funded by reserving a portion of the dividend that the company received . the remaining after-tax amount was paid to the company 's common stockholders . the result was cash-flow neutral for the public company . at december 31 , 2011 , approximately $ 563 million of accumulated earnings that have not been previously subject to income tax in the u.s. were held in the company 's non-u.s. subsidiaries . additional dividends originating from these subsidiaries up to

cash flows the following table sets forth our cash flows from operating activities , investing activities and financing activities for the periods indicated : replace_table_token_20_th our cash flows from operating activities are largely a reflection of the size and composition of trading positions held by our market making subsidiaries , and of the changes in customer cash and margin debit balances in our electronic brokerage business . our cash flows from investing activities are primarily related to capitalized internal software development , purchases and sales of memberships at exchanges where we trade and strategic investments where such investments will enable us to offer better execution alternatives to our current and prospective customers , or create new opportunities for ourselves as market makers or where we can influence exchanges to provide competing products at better prices using sophisticated technology . our cash flows from financing activities are comprised of short-term borrowings , long-term borrowings and capital transactions . short-term borrowings from banks are part of our daily cash management in support of operating activities . other borrowings provide us with flexible sources of excess liquidity and regulatory capital . these borrowings include senior notes issued in private placements to certain qualified customers of ib llc and a committed two-year $ 100.0 million senior secured revolving credit facility , from a syndicate of banks . this facility was entered into in may 2010 and replaced a one-year $ 100.0 million facility that expired at the same time . capital transactions consist primarily of the approximately $ 1 billion special dividend in december 2010 as well as the three quarterly dividends paid in 2011. year ended december 31 , 2011 : our cash and cash equivalents increased by $ 341.3 million to $ 1,695.5 million at the end of 2011. we raised $ 1,085.9 million in net cash from operating activities . we used net cash of $ 687.7 million in our investing and financing activities to purchase non-market making investments , decrease short-term borrowings and repay borrowings under our senior secured revolving credit facility .


 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 flows the following table sets forth our cash flows from operating activities , investing activities and financing activities for the periods indicated : replace_table_token_20_th our cash flows from operating activities are largely a reflection of the size and composition of trading positions held by our market making subsidiaries , and of the changes in customer cash and margin debit balances in our electronic brokerage business . our cash flows from investing activities are primarily related to capitalized internal software development , purchases and sales of memberships at exchanges where we trade and strategic investments where such investments will enable us to offer better execution alternatives to our current and prospective customers , or create new opportunities for ourselves as market makers or where we can influence exchanges to provide competing products at better prices using sophisticated technology . our cash flows from financing activities are comprised of short-term borrowings , long-term borrowings and capital transactions . short-term borrowings from banks are part of our daily cash management in support of operating activities . other borrowings provide us with flexible sources of excess liquidity and regulatory capital . these borrowings include senior notes issued in private placements to certain qualified customers of ib llc and a committed two-year $ 100.0 million senior secured revolving credit facility , from a syndicate of banks . this facility was entered into in may 2010 and replaced a one-year $ 100.0 million facility that expired at the same time . capital transactions consist primarily of the approximately $ 1 billion special dividend in december 2010 as well as the three quarterly dividends paid in 2011. year ended december 31 , 2011 : our cash and cash equivalents increased by $ 341.3 million to $ 1,695.5 million at the end of 2011. we raised $ 1,085.9 million in net cash from operating activities . we used net cash of $ 687.7 million in our investing and financing activities to purchase non-market making investments , decrease short-term borrowings and repay borrowings under our senior secured revolving credit facility .
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 Suspicious Activity Report : in june 2011 , with the consent of ibg holdings llc and the company ( on its own behalf and acting as the sole managing member of ibg llc ) , ibg llc agreed to redeem certain membership interests from ibg holdings llc through the sale of common stock and to distribute the proceeds of such sale to the beneficial owners of such membership interests . on august 4 , 2011 , the company filed a `` shelf `` registration statement on form s-3 with the sec for the issuance of additional shares in connection with ibg holdings llc requesting redemption of a portion of its member interests in ibg llc . on august 4 , 2011 , a prospectus supplement ( file number 333-176053 ) was filed by the company with the sec to issue 1,983,624 shares of common stock in exchange for an equivalent number of shares of member interests in ibg llc . the company expects that future redemptions will be funded through the issuance of common stock . as part of a redeployment of the company 's capital to its shareholders , the company effected a series of dividend payments , including a dividend of $ 1.79 per share , which was paid to the company 's common shareholders in december 2010. during the second quarter of 2011 , the company declared and paid a cash dividend of $ 0.10 per share and has continued this quarterly dividend policy through the current fiscal year end and into the first quarter of 2012. we expect to pay a quarterly dividend of $ 0.10 per share to our common stockholders for the foreseeable future . business segments the company reports its results in two business segments , electronic brokerage and market making . these segments are analyzed separately as we derive our revenues from these two principal business activities as well as allocate resources and assess performance . electronic brokerage . we conduct our electronic brokerage business through our ib subsidiaries . as an electronic broker , we execute , clear and settle trades globally for both institutional and individual customers . capitalizing on the technology originally developed for our market making business , ib 's systems provide our customers with the capability to monitor multiple markets around the world simultaneously and to execute trades electronically in these markets at a low cost , in multiple products and currencies from a single trading account . we offer our customers access to all classes of tradable , primarily exchange-listed products , including stocks , bonds , options , futures , forex and mutual funds traded on more than 100 exchanges and market centers and in 19 countries around the world seamlessly . market making . we conduct our market making business through our th subsidiaries . as one of the largest market makers on many of the world 's leading exchanges , we provide liquidity by offering competitively tight bid/offer spreads over a broad base of over 867,000 tradable , exchange-listed products . as principal , we commit our own capital and derive revenues or incur losses from the difference between the price paid when securities are bought and the price received when those securities are sold . because we provide continuous bid and offer quotations and we are continuously both buying and selling quoted securities , we may have either a long or a short position in a particular product at a given point in time . our entire portfolio is evaluated each second and continuously rebalanced throughout the trading day , thus minimizing the risk of our portfolio at all times . this real-time rebalancing of our portfolio , together with our real-time proprietary risk management system , enables us to curtail risk and to be profitable in both up-market and down-market scenarios . 42 business environment the global financial markets were impacted by several events throughout 2011 which drove exchange-traded options volumes and volatility levels higher , contributing to market conditions that enhanced our results in both the electronic brokerage and market making segments . the first part of the year was relatively subdued until the earthquake and tsunami in japan caused a brief spike in trading and volatility levels . then , in august , a series of economic news items shook the markets and caused volatility levels to remain elevated for several weeks . these developments included the u.s. government credit rating downgrade by standard & poor 's , ongoing concerns over european government debt and the threat of credit rating downgrades across the euro zone . in addition to higher volatility and trading volumes , bid/offer spreads in exchange-listed options also widened meaningfully from the historically low levels of the prior year when high frequency trading activity peaked . the improvement in these conditions benefited our market making trading gains and also increased commission revenues in the brokerage segment , as our customers took advantage of periods of higher volatility . our reputation for being one of the lowest cost brokers that provides high quality executions and state-of-the-art trading technology continued to spread , mostly by word-of-mouth . our customer accounts grew by 20 % in 2011. mf global 's collapse during the fourth quarter raised new concerns amongst investors over the safety and security of their assets . we took this opportunity to review our procedures for protecting customer assets and our automated risk controls that are designed to minimize the risk of large customer losses . to further enhance protection of our customers ' assets , ib llc sought and received approval from finra to perform the securities reserve computation on a daily basis instead of once per week , as prescribed by the rules . ib llc initiated daily computations in december 2011 , along with daily adjustments of the money set aside in safekeeping for our customers . story_separator_special_tag market data fees are fees that we must pay to third parties to receive streaming quotes and related information . 47 employee compensation and benefits employee compensation and benefits includes salaries , bonuses and other incentive compensation plans , group insurance , contributions to benefit programs and other related employee costs . occupancy , depreciation and amortization occupancy expense consists primarily of rental payments on office and data center leases and related occupancy costs , such as utilities . depreciation and amortization expense results from the depreciation of fixed assets such as computing and communications hardware as well as amortization of leasehold improvements and capitalized in-house software development . communications communications expense consists primarily of the cost of voice and data telecommunications lines supporting our business including connectivity to exchanges around the world . general and administrative expenses in this category are primarily incurred for professional services , such as legal and audit work , and other operating expenses such as advertising and exchange membership lease expenses . income tax expense we pay u.s. federal , state and local income taxes on our taxable income , which is proportional to the percentage of ibg llc owned by ibg , inc. our subsidiaries are subject to income tax in the respective jurisdictions in which they operate . non-controlling interest we are the sole managing member of ibg llc and , as such , operate and control all of the business and affairs of ibg llc and its subsidiaries and consolidate ibg llc 's financial results into our financial statements . we hold approximately 11.5 % ownership interest in ibg llc . ibg holdings llc is owned by the original members of ibg llc and holds approximately 88.5 % ownership interest in ibg llc . we reflect ibg holdings llc 's ownership as a non-controlling interest in our consolidated statement of financial condition , consolidated statement of comprehensive income , consolidated statement of changes in equity and consolidated statement of cash flows . our share of ibg llc 's net income , excluding ibg holdings llc 's non-controlling interest , is approximately 11.5 % and similarly , outstanding shares of our common stock represent approximately 11.5 % of the outstanding membership interests of ibg llc . certain trends and uncertainties we believe that our continuing operations may be favorably or unfavorably impacted by the following trends that may affect our financial condition and results of operations . over the past several years , the effects of market structure changes , competition ( in particular , from hfts ) and market conditions have , during certain periods , exerted downward pressure on bid/offer spreads realized by market makers . retail broker-dealer participation in the equity markets has fluctuated over the past few years due to investor sentiment , market conditions and a variety of other factors . retail transaction volumes may not be sustainable and are not predictable . 48 in recent years , in an effort to improve the quality of their executions as well as increase efficiencies , market makers have increased the level of automation within their operations , which may allow them to compete more effectively with us . there has been increased scrutiny of equity and option market makers , hedge funds and soft dollar practices by the regulatory and legislative authorities . new legislation or modifications to existing regulations and rules could occur in the future . if there is consolidation among market centers this may adversely affect the value of our smart routing software . a driver of our market making profits is the relationship between actual and implied volatility in the equities markets . the cost of maintaining our conservative risk profile is based on implied volatility , while our profitability , in part , is based on actual volatility . hence , our profitability is increased when actual volatility runs above implied volatility and it is decreased when actual volatility falls below implied volatility . implied volatility tends to lag actual volatility . see `` risk factors `` in part i , item 1a of this annual report on form 10-k for a discussion of other risks that may affect our financial condition and results of operations . non-gaap financial measures non-gaap measures are used to isolate items that the company 's management views as non-operating in nature , which is intended to give a clearer presentation of operating results . given its material impact on our reported financial results , the following non-gaap measure is presented for 2010 : in december 2010 , we effected a series of dividend payments , culminating in a cash dividend of $ 1.79 per share , which was paid to holders of ibkr common stock . in total , ibg llc paid out about $ 1 billion . funding for this dividend originated with our swiss company , which paid a dividend to ibg llc , its parent company . ibg llc , in turn , paid a dividend to its members , including interactive brokers group , inc. , the public company . on a consolidated reporting basis , these dividends had no effect on the company 's reported income . however , the original dividend from the swiss company was made from earnings that were not previously taxed in the u.s. as a result , this triggered a u.s. federal income tax liability for the company , which is reported as income tax expense in the consolidated statement of comprehensive income . this income tax liability was funded by reserving a portion of the dividend that the company received . the remaining after-tax amount was paid to the company 's common stockholders . the result was cash-flow neutral for the public company . at december 31 , 2011 , approximately $ 563 million of accumulated earnings that have not been previously subject to income tax in the u.s. were held in the company 's non-u.s. subsidiaries . additional dividends originating from these subsidiaries up to

