Jason Child
Analyst · William Blair
Thanks, Andrew. I'll start with a review of our fourth quarter and full year 2011 financial results and we'll share our current expectations for the first quarter of 2012. We'll then take a few questions.
Fourth quarter operating cash flow increased 226% to $169.1 million. Fourth quarter free cash flow increased 258% to $155.1 million. For the fourth quarter, worldwide gross billings, which is the total amount spent by customers on Groupons, grew year-over-year 201% to $1.25 billion. Fourth quarter worldwide revenue, which is defined as the portion of gross billings that we keep after paying our merchants, grew 194% year-over-year to $506.5 million. This implies our entering 2012 with an annualized run rate in excess of $2 billion.
The unfavorable impact on revenue from year-over-year changes in foreign exchange rates throughout the quarter was $3.5 million or 69 basis points. Fourth quarter gross billings and revenue were reflective of strong growth in our daily deals business and in our new travel, entertainment and e-commerce channels. Strength in daily deals was reflected in part by the increase in revenue margi,n, or revenue as a percentage of gross billings, on a quarter-over-quarter basis.
As Andrew mentioned, we also saw a lift in seasonal gifting-related purchases largely driven to our second annual Grouponicus holiday seasonal promotion. The promotion was served to just 40 North American markets with local deals, travel deals and goods chosen specifically for their gift-abilities. The success of Grouponicus opens the opportunity for us to roll out additional occasion-themed promotions during the course of the year. We have not yet announced similar initiatives for 2012 beyond our Valentine's promotion, but we're evaluating several possibilities and are working closely with our merchant partners to optimize our occasion campaign plan.
For the full year, worldwide gross billings grew 437% to $4.0 billion. 2011 worldwide revenue grew 419% to $1.62 billion. The favorable impact on revenue from year-over-year exchange and foreign exchange rates throughout the year was $43.4 million or 267 basis points. Trailing 12 month operating cash flow increased 234% to $290.5 million. Trailing 12 month free cash flow increased 242% to $246.6 million.
Now I will discuss our operating expenses excluding stock-based compensation. Cost of revenue for the fourth quarter was $87.3 million or 17% of revenue, up 260 basis points year-over-year. The increase in cost as a percentage of revenue was largely driven by growth in our editorial and technology headcount costs. Marketing in the fourth quarter was $156.5 million, down 22% in absolute dollars year-over-year and down 8% from third quarter. We continued to realize significant efficiencies in our marketing investments. Improved execution, word-of-mouth customer marketing benefits and mix shift from subscriber acquisitions, spend to market connected directly to revenue generation, are all contributors to the improvement.
As of December 31, 2011, subscriber acquisition still comprises the primary portion of our marketing spend. This is particularly true in less mature international markets, where we are still in the early phases of building out our subscriber footprint. As those markets mature and as we optimize our transactional advertising spend in more developed markets, we expect to realize further leverage on the marketing line.
Selling, general and administrative costs in the fourth quarter totaled $247.4 million or 49% of revenue, down from 68% in the prior year period. The productivity of our sales force continues to improve as we refine our sales management and selling processes and as we introduce new products and services, facilitating deeper customer and merchant engagement. You can expect to see us continue to invest aggressively in people and technology, the benefits of which will be reflected over a long period of time in our financials.
Fourth quarter consolidated segment operating income or CSOI, which excludes stock-based compensation and expenses related to acquisitions, was $48 million. This compares to a loss of $143.4 million in the fourth quarter of 2010. Of the $49.7 million improvement in CSOI versus third quarter, only $13.9 million was related to our ability to reduce marketing costs and realize greater efficiencies. Also absorbed into the $48 million of CSOI for the quarter, were roughly $40 million in operating losses incurred principally in less mature countries within the international segment.
Unlike CSOI, our GAAP operating income or loss does include stock-based compensation, expense and acquisition-related expenses. Fourth quarter GAAP operating income improved to $15 million from a loss of $336.1 million in the fourth quarter of 2010. The favorable impact in operating income from the year-over-year changes in foreign exchange rates throughout the quarter was $11.6 million.
Fourth quarter net loss attributable to common shareholders was $42.3 million or $0.08 per share compared to a loss of $378.6 million and $1.08 per share in Q4 2010. Our net loss includes income tax expense of $34.8 million in Q4. This includes tax related to profitability in certain international countries, as well as charges related to the establishment of our international headquarters in Switzerland. Primarily as a result of these charges, our effective tax rate for the quarter was well beyond our current average statutory rate of approximately 33%. We expect our effective tax rate to decline over time.
Pro forma EPS loss for the quarter was minus $0.02 adjusting for stock-based compensation and acquisition-related expenses. Our effective tax rate for Q4 was negative 1,561%, which certainly makes us a good corporate citizen, but is not indicative of a long-term trend. Total income tax was approximately $0.07 per share, of which the charges related to the establishment of our international headquarters in Switzerland, represented approximately $0.03 per share.
For the full year 2011, cost of revenue was $249.9 million or 15% of revenue, up 170 basis points year-over-year. Full year 2011 marketing was $769.6 million or 48% of revenue, compared with 93% in 2010. Selling, general and administrative costs totaled $813 million for the year, or 50% of revenue, versus 63% in the prior year period. We realized improved leverage on our SG&A despite increase in our total headcount from 4,457 to 11,471 during the year, the majority of that investment concentrated in our global sales force.
Full year consolidated segment operating loss was $114.3 million. This compares to a loss of $181 million in 2010. Full year GAAP operating loss improved to $203.4 million from a loss of $420.3 million in 2010. The unfavorable impact on operating income from year-over-year changes in foreign exchange rates throughout the year was $9.8 million.
Our 2011 income tax expense was $44.3 million. 2011 full year GAAP net loss was $350.8 million or $0.97 per share, compared to a loss of $456.3 million and $1.33 per share in Q4 2010. Pro forma net loss attributable to common shareholders for the full year increased to a loss of $261.8 million or a loss of $0.72 a share from a prior year net loss attributable to common stockholders of $217 million or a loss of $0.63 per share.
Now I will briefly cover our segment results and a few balance sheet items before closing with a look forward to the first quarter of 2012. Note that we do not allocate our stock-based compensation or our acquisition-related expense items to our segments.
In the fourth quarter, North America segment revenue grew 113% year-over-year to $188.5 million. North America segment operating income improved to $35.8 million from a loss of $21.9 million in fourth quarter 2010. International segment revenue grew 279% year-over-year in the fourth quarter to $318 million. Adjusting for the $3.5 million year-over-year impact of foreign exchange, revenue growth was 283%. International segment operating income improved to $12.2 million from a loss of $121.5 million in fourth quarter 2010. The favorable impact on operating income from year-over-year changes and foreign exchange rates throughout the quarter was $11.6 million.
In 2010, North America segment revenue grew 221% year-over-year to $643.8 million. North America segment operating income improved to $22.3 million from a loss of $10.4 million in 2010. 2011 international segment revenue grew 772% in 2011 versus a partial year of operations in 2010 to $980.9 million. Adjusting for the $43.4 million year-over-year impact of foreign exchange, revenue growth was 733%.
International segment operating loss improved to $136.7 million from a loss of $170.6 million in the 8 months of international operations in 2010. The favorable impact in operating income from year-over-year changes and foreign exchange rates throughout the year was $9.8 million.
Turning to the balance sheet. As of December 31, 2011, cash and marketable securities increased to $1.1 billion year-over-year from $119 million. Total accounts payable, including our accrued merchants payable, increased 153% to $557.3 million. Total accounts payable decreased to 68 from 82 days in the prior year. On a sequential basis, AP days increased from 63 to 68 versus Q3. Despite the move up in AP days this quarter, we expect to continue bringing our total accounts payable down to be closer in line with our North America business over time as our international markets mature.
As AP days compress over time, and as we realize continued improvements in operating leverage, composition of free cash flow should shift increasingly to earnings and migrate away from the flow provided by our merchant payables. As such, CSOI will more closely approximate free cash flow over time. We fully expect that cash generated through business operations in the foreseeable future, combined with the cash we now have on the balance sheet, will provide ample resources to fuel any growth initiatives we currently have in plan or may anticipate in the near term.
Our Q4 2011 capital expenditures were $14 million. Full year capital expenditures came in at $43.8 million. In Q4 2010 and full year 2010, respectively, CapEx totaled $8.6 million and $14.7 million. The increase in capital expenditures reflects additional investments in technology, as we continue our long-term orientation and aggressive approach towards investing in the future.
Outlook. I'm going to conclude my portion of today's calls with our outlook. Incorporated in this outlook are the trends that we've seen to date in Q1. Our results are inherently unpredictable and may be materially affected by many factors, including a high level of uncertainty surrounding the exchange rate fluctuations, as well as the global economy and consumer spending. It's not possible to accurately predict demand, and therefore our actual results could differ materially from our guidance.
Our outlook further assumes that we don't conclude any additional business acquisitions or investments, record any further provisions to stock-based compensation estimates, and that foreign exchange rates remain approximately where they have been recently.
For Q1 2012, we expect recent -- we expect revenue between $510 million and $550 million, or between 73% to 86% year-over-year growth and between 1% and 11% quarter-over-quarter growth.
We expect first quarter GAAP operating income to be between $15 million and $35 million of income as compared to an operating loss of $117.2 million in the first quarter of 2011. This outlook include approximately $35 million for stock-based compensation expense. We do not anticipate any acquisition-related expenses for the quarter.
We anticipate consolidated segment operating income, which excludes stock-based compensation and acquisition-related expenses, to be between $70 million -- $50 million and $70 million, as compared to our first quarter of 2011 consolidated segment operating loss of $98.3 million. Before we turn it over to questions, I'll hand it back over to Andrew for a closing comment.