Michael Mullican
Analyst · UBS
Thanks, Ken, and good morning, everyone. Our second quarter results set company records across key financial metrics, including revenue, gross margin, pretax income and net earnings. I will start by reviewing our record second quarter results, then discuss our updated 2021 outlook, which we are raising based on the continued strength of our business and healthy market trends.
Net sales were $1.8 billion with comparable sales of 11.4% on top of last year's 27% comp. When compared to Q2 2019, sales increased 44.8%. As Ken mentioned, it is our eighth consecutive quarter of positive comparable sales, of which the last 5 have been double-digit increases. The growth was broad-based and is the third consecutive quarter that all 4 merchandise divisions have had positive comparable sales growth. The growth was driven by an increase in transactions, average unit retails and ticket size.
Our differentiated value-based assortment and excellent service is resonating with our customers in a time where everyone is looking to have more fun.
We are pleased with the progress of our e-commerce business. Sales were down slightly, minus 0.9% for the quarter. However, when compared to the second quarter of 2019, sales increased 207%. The sales penetration rate in Q2 2020 was 8.4% of sales, more than double the penetration rate in Q2 2019.
The buy-online-pick-up-in-store sales exceeded 50% of e-commerce sales and continues to be a very effective and profitable way for us to transact with our customers. The investments being made in omnichannel, such as the July launch of our mobile app, more relevant product recommendations, enhanced ship-to-store capabilities and new search and checkout functionality will drive continued growth. In fact, Academy.com sales were positive for the last 7 weeks of the quarter, so the sales trajectory is encouraging.
Merchandise margins were once again very strong. Similar to the first quarter, margins benefited from a shift towards a normalized product sales mix, higher average unit retails and fewer markdowns. The gross margin rate expanded by 500 basis points to 35.9%, leading to a record gross margin dollar performance of $643.5 million, a 29% increase over Q2 2020 and a 67% increase over Q2 2019. SG&A expenses were $388 million or 21.7% of sales, which was 220 basis points higher than Q2 2020, but 360 basis points lower than Q2 2019.
Last year, due to the onset of the pandemic, we reduced certain operating expenses, such as advertising and payroll, compared to a more normalized run rate this quarter. This year, we also recorded onetime stock compensation expenses associated with some accelerated share vesting. Excluding the nonrecurring expenses, SG&A expenses would have been 19.2% of sales.
The record sales and margin results led to pretax income of $240.9 million, a 42.8% increase compared to $168.7 million last year. After applying the second quarter tax rate of 21%, we finished the quarter with record net income of $190.5 million. Q2 diluted earnings per share were $1.99 per share compared to $2.25 per share in Q2 2020. The decrease is due to the number of shares outstanding compared to the prior year quarter and a lower tax rate as the company was not subject to federal income tax prior to the October 2020 IPO.
Pro forma adjusted net income, which excludes the impact of certain extraordinary items, increased 67.1% to $224.6 million compared to $134.4 million in Q2 2020. Pro forma diluted earnings per share were $2.34 compared to $1.81 per share last year.
Looking at the balance sheet, we are in a strong financial position with $554 million in cash at the end of the quarter. We remain undrawn on our ABL facility with over $850 million of borrowing capacity. In addition, after reducing our term loan by $99 million this quarter and lowering our leverage ratio, our debt was upgraded by Moody's and S&P.
The ending inventory balance was $1.1 billion. This is 24% higher than Q2 2020, 3% higher than at the end of last quarter, and 7% less than Q2 2019. During Q2, the company generated $170 million in adjusted free cash flow. Lastly, capital expenditures are expected to be approximately $90 million in fiscal 2021 as we have accelerated certain growth initiatives.
At the beginning of the fiscal year, we identified 4 main sales driving opportunities. Those opportunities were: capitalizing on the shopping velocity of new and existing customers, replenishing and growing categories where inventory was constrained throughout most of 2020, the growth of several product categories that were challenged last year but would benefit from the reopening of the economy, and improving our management of seasonal categories where demand exceeded supply in 2020.
Here's our midyear report card. First, the number of existing customers who made a purchase in a new category over the last 12 months and then purchased that category again continues to increase. Second, ending inventory of constrained categories has improved. For example, we are back in stock in categories like bikes and fitness equipment. Third, compared to the first half of 2020, team sports apparel and footwear have exceeded the company's comp sales growth rate. Fourth, sales in seasonal categories like water sports and outdoor furniture, where we didn't have enough supply last year have also exceeded the company's second quarter comp.
We are growing the business by having the right products in stock at the right price at the right time, by driving deeper engagement with customers and gaining market share. As a result, our stores are becoming more productive and profitable. Over the trailing 12 months, we have increased our average sales per store and sales per square foot by 20%.
EBIT for the same period grew by 125%, $2.7 million per store compared to $1.2 million. And when compared to 2019, sales per store have increased 31% and EBIT per store has grown 320%. On a trailing 12-month basis, 100% of our stores are profitable and accretive to earnings.
Now to our updated outlook for fiscal 2021. Based on Q2 results, recent trends and the visibility we currently have into Q3 and Q4, we are raising our comparable sales forecast from up 6% to 9% to an increase of 14% to 17% for the full year. On a 2-year basis, this would represent comp growth of 30% to 33%.
GAAP diluted earnings per share are now forecasted to range from $5.45 per share to $5.80 per share based on 96.5 million diluted weighted average shares outstanding for the full year. This EPS range does not include the impact of any potential share repurchases. This guidance accounts for various market scenarios and possible outcomes for the remainder of the year, varying from business as it is today to a challenging environment with more supply chain constraints or a much more promotional and competitive marketplace.
With that, I will now turn the call over to Steve for more details around merchandising and operations. Steve?