David Fallon
Analyst · Deutsche Bank
Great. Thanks, Rob. Turning to Page 7. This slide summarizes our second quarter financial results versus last year. Net sales were up $254 million or 25% and 20% when adjusted for a $50 million foreign exchange tailwind. We continued our strong momentum with second quarter orders, as Rob mentioned, which were up 24% after increasing over 20% in the first quarter.
Adjusted operating profit increased $31 million or 30%, primarily driven by the profit flow-through from higher sales. However, as discussed, our contribution margin in the second quarter was negatively influenced by material and freight inflation, which impacted our second quarter P&L in advance of much of the favorable pricing expected to materially benefit the second half of the year. The negative impact of net inflation on contribution margin in the second quarter was approximately $25 million with another $10 million impacting contribution margin driven by the plant inefficiencies driven by the supply chain environment.
Fixed costs were up $20 million from last year's second quarter, including $30 million from last year's onetime COVID cost actions and $20 million from incremental growth in ER&D investments, both partially offset by continued fixed cost reduction initiatives and an impairment of capitalized software recognized in last year's second quarter.
Our adjusted earnings per share increased $0.15 to $0.31, primarily on the strength of higher adjusted operating profit and lower interest and income tax expense. Free cash flow was down $20 million from last year's second quarter. But as we discussed in our first quarter conference call, free cash flow in the first quarter was positively impacted by $25 million due to the delay of the cash disbursement at the end of the first quarter as a result of the systems implementation. And of course, this timing also negatively impacted second quarter free cash flow by the same $25 million. Otherwise, free cash flow would have been in line with last year's second quarter.
Turning to Page 8. This slide summarizes our second quarter segment results. Net sales in the Americas were up $80 million or 16.5%, driven by strong double-digit growth across all 3 product segments. Net sales in APAC were up $75 million or 23%, with growth across most of the APAC subregions, product segments and market verticals.
Net sales in EMEA were up $99 million or an impressive 50%, 41% organic, predominantly in the critical infrastructure and solutions products segment driven by several larger colocation projects. From a profitability perspective, adjusted operating margin declined in both the Americas and APAC, with both regions negatively impacted by material and freight inflation with Americas disproportionately impacted due to regional differences in commodity markets and higher electronic spot buys to support a larger channel business.
Adjusted operating profit improved in EMEA despite inflation challenges due to the leverage benefit of lower fixed costs on a significantly higher net sales base. Once again, this demonstrates the margin benefit of maintaining or reducing fixed costs while growing the top line. You may have heard the philosophy of keeping fixed cost constant. So this is once again, a real applicable example of that.
Next turning to Slide 9. This chart bridges second quarter free cash flow from last year. The year-over-year benefit from higher adjusted operating profit and lower cash interest payments was more than offset by several unfavorable variances including $20 million in cash taxes driven by lower estimated payments in last year's second quarter, primarily due to COVID uncertainty.
And we also had an additional $18 million outflow from inventory as we have proactively invested in inventory to satisfy customer demand in this challenging supply chain environment. Despite the unfavorable quarterly year-over-year comparison, year-to-date free cash flow is still $225 million higher than the same period last year. Last on this slide, we ended the second quarter with a record high liquidity of $1.1 billion and a record low net leverage -- net debt leverage ratio of 2.2x.
Next turning to Slide 10. This slide summarizes our third quarter financial guidance. We expect first half top line momentum to continue into the third quarter, with net sales up 10% at the midpoint, including a double-digit growth in EMEA and upper single-digit growth in Americas and APAC. So we expect the growth momentum to continue to cross all 3 regions.
This sales guidance assumes $25 million year-over-year benefit from pricing. And that's probably a little bit more proportionately directed at the Americas versus the other 2 regions. We guide towards adjusted operating profit of $160 million at the midpoint, up $92 million from last year. But as a reminder, we recognized an $80 million combined charge in last year's third quarter for restructuring and an asset impairment. This adjusted operating profit guidance assumes that the third quarter benefit from pricing does not quite offset the negative impact from inflation. However, we do anticipate a full offset pricing versus inflation in the fourth quarter.
Finally, adjusted EPS is expected to increase approximately $0.23 at the midpoint, primarily driven by the $8 million restructuring and asset impairment charge in last year's third quarter as the EPS benefits from incremental volume are offset by headwinds from net price inflation and last year's COVID actions, which were still $10 million in the third quarter of 2020.
Next turning to Slide 11. We summarize our revised full year 2021 financial guidance, including net sales of $5 billion, up 14% from 2020 and $100 million higher than our prior guidance. We are increasing our adjusted operating profit guidance to $600 million, up $5 million from prior guidance. And we will provide some detail of dollar increase on the next slide. We are taking down our full year estimate for adjusted operating margin by approximately 10 basis points at the midpoint. There are several moving pieces to our updated operating profit guidance, which certainly impact operating margin.
Some of these are favorable; some are unfavorable as illustrated on the next slide. But in the macro, the reduction is driven by the additional net inflation and related costs, offset by fixed cost actions we have initiated, including controlling discretionary spending.
For the avoidance of any doubt, we are reaffirming our adjusted operating margin targets of 16% in the intermediate term and 20% in the long term. We believe the net inflation headwind is an unfortunate 2021 dynamic due to constrained supply chains coming out of COVID. And we believe the pricing actions we are implementing today will generate a nice tailwind for 2022. And we are certainly incurring costs today to satisfy customer needs currently, and I'm referring to the spot buys and expedited freight, that we consider a long-term investment in our customer relationships, which can be referenced as winning later.
Even though it is hypothetical, at least on paper without the $45 million net inflation headwinds, we could be discussing adjusted operating profit in the $645 million range for 2020 as growth remains robust, with net sales now expected to be $225 million at the midpoint higher than our beginning-of-the-year estimates.
Full year adjusted EPS is expected to be $1.15, $0.04 higher than our prior full year guidance, driven by the $5 million increase in adjusted operating profit, about $0.01, and $11 million lower full year tax expense contributing about $0.03. And that was primarily the result of a discrete tax benefit that we recognized in the second quarter.
Finally, we are maintaining our full year projected free cash flow guidance of $300 million, which is up almost $140 million from full year 2020. We discussed internally whether we should increase our full year free cash flow guidance, but we are holding flat due to uncertainty in the supply chain, we generally realize a really nice cash inflow in the fourth quarter from the reduction of inventory, but we want to wait another quarter to see how that plays out for this year. With that said, we do like the upper end of the range of our $290 million to $310 million free cash flow full year guidance.
Next, turning to Slide 12. This chart bridges our full year adjusted operating profit from prior guidance of $5 million increase. On the prior slide, we noted a $100 million net sales increase. The components of this increase include $40 million of pricing mostly in the second half, $15 million of foreign exchange translation almost entirely in the second quarter and $45 million of volume with $35 million of that in the second quarter and $10 million in the second half. The $40 million of pricing is depicted in the first green bar.
The second green bar reflects the benefits of various fixed cost reduction actions we implemented in the second quarter, including controlling discretionary spending, and this should benefit the remainder of 2021. The third green bar reflects the expected flow-through from the $40 million to $45 million incremental organic volume.
The 2 largest red bars on this page reflect our updated views on the impact of supply chain challenges in 2021. This represents combined about $65 million of higher cost compared to our previous guidance with an incremental $20 million realized in the second quarter and $45 million added to the second half. Finally, on this slide, the last red bar on the right reflects expected headwinds from our prior guidance related to timing delays in productivity, both in purchasing and in the plant as a result of the current supply chain environment.
With that said, I turn it back over to Rob. Rob?