Aptiv PLC APTV posted better-than-expected fourth-quarter 2018 results.Adjusted earnings of $1.34 per share surpassed the Zacks Consensus Estimate by 13 cents and increased 5% year over year. Revenues of $3.6 billion exceeded the consensus mark by $100 million and increased 6% year over year.In the past year, shares of Aptiv have lost 22.3% compared with the Zacks S&P 500 Composite’s 5.1% decline.Quarterly Numbers in DetailRevenues in the Signal and Power Solutions segment totaled $2.6 billion, up 4% on a year-over-year basis and contributing 72% to total revenues. Advanced Safety and User Experience revenues of $1 billion improved 9% year over year and contributed 28% to total revenues.Aptiv PLC Revenue (TTM) Aptiv PLC Revenue (TTM) | Aptiv PLC Quote Adjusted operating income of $430 million fell 4.4% year over year. Adjusted operating income margin of 11.8% contracted 130 basis points (bps) year over year.Aptiv ended the fourth quarter with cash and cash equivalents balance of $567 million compared with $771 million in the previous quarter. Long-term debt was $4 billion compared with $4.1 billion in the prior quarter.Total available liquidity at the end of the quarter was $2.6 billion compared with $3.1 billion at the end of the prior quarter. Net cash provided by operating activities was $757 million and capital expenditures were $185 million in the quarter.Aptiv returned $335 million to shareholders through share repurchases and dividends.Q1 GuidanceAptiv anticipates adjusted earnings to be between 97 cents and $1.02 per share, lower than the Zacks Consensus Estimate of $1.27. Net sales are expected in the range of $3.40-$3.50 billion, lower than the Zacks Consensus Estimate of $3.72 billion.Adjusted operating income is expected in the range of $325-$345 million. Adjusted operating income margin is anticipated between 9.6-9.9%.2019 GuidanceThe company expects adjusted earnings in the range of $5.25-$5.45 per share. The Zacks Consensus Estimate is pegged at $5.45. Net sales are anticipated between $14.60 billion and $15.00 billion, lower than the Zacks Consensus Estimate of $15.14 billion.Adjusted operating income is expected in the range of $1.72-$1.80 million. Adjusted operating income margin is anticipated between 11.8-12.0%.Zacks Rank & Upcoming ReleasesAptiv currently carries a Zacks Rank #3 (Hold).A few better-ranked stocks in the broader Business Services sector are General Finance Corporation GFN, Omnicom Group Inc OMC and Paychex, Inc PAYX, each carrying a Zacks Rank #2 (Buy). You can see the complete list of today’s Zacks #1 Rank (Strong Buy) stocks here.The long-term expected EPS (three to five years) growth rate for General Finance, Omnicom and Paychex is 11%, 6.9% and 8.8%, respectively.Looking for Stocks with Skyrocketing Upside?Zacks has just released a Special Report on the booming investment opportunities of legal marijuana.Ignited by new referendums and legislation, this industry is expected to blast from an already robust $6.7 billion to $20.2 billion in 2021. Early investors stand to make a killing, but you have to be ready to act and know just where to look.See the pot trades we're targeting>>Want the latest recommendations from Zacks Investment Research? Today, you can download 7 Best Stocks for the Next 30 Days. Click to get this free report Omnicom Group Inc. (OMC): Free Stock Analysis Report General Finance Corporation (GFN): Get Free Report Paychex, Inc. (PAYX): Get Free Report Aptiv PLC (APTV): Get Free Report To read this article on Zacks.com click here.