Following a topsy-turvy day of regular trading this Tuesday -- which saw a nearly 700-point swing in the Dow, from up triple digits early in the day to more than 400 points down at the close -- we see another slew of Q1 earnings results from prominent companies in each of their various industries. Results have been uniformly positive thus far; hopefully these will help carry forth into a positive trading day Wednesday.Zacks Rank #2 (Buy)-rated Texas Instrument TXN easily outperformed expectations on its top and bottom lines, posting $1.35 per share in the quarter on $3.79 billion in sales, up from the $1.11 per share and $3.65 billion expected, respectively. Guidance for next quarter is in a range of $1.19-1.35; the prior Zacks estimate for Q2 was $1.23. Shares are up more than 5% in the after-market; T.I. had been trading off its recent highs by as much as 18%. For more on TXN's earnings, click here.Wynn Resorts WYNN also zoomed passed expectations in its quarterly earnings release after today's closing bell: $2.30 per share outshined the $1.96 estimate, and well ahead of the $1.24 per share in the year-ago quarter. Revenues eked out a beat as well, to $1.72 billion from the $1.71 billion expected. The company's also announced a 50% dividend hike, which seems a bit out of the ordinary for a company that just lost its founder and CEO, Steve Wynn, ten weeks ago on charges of sexual misconduct. That said, the company has averaged more than a 22% positive surprise over the previous four quarters. For more on WYNN's earnings, click here.Shares of iRobot IRBT, the maker of the Roomba, easily surpassed expectations and year-ago earnings: 71 cents per share versus 50 cents in the Zacks consensus and 52 cents in Q1 2017. Revenues of $217.1 million topped the $215.6 million analysts were looking for. Guidance for full-year 2018 earnings is currently $2.15-2.40 per share; the Zacks estimate had been $2.31 per share. iRobot is also no stranger to positive earnings surprises -- its trailing 4-quarters averaged a beat of 113%. For more on IRBT's earnings, click here.And Hawaiian Airlines HA, which itself has recently changed CEOs, also outperformed in its most recent quarter: $1.09 per share over the 82 cents anticipated, on $665.4 million in sales that beat the $652.4 million analysts had been expecting. The new CEO, Peter Ingram, was quoted as saying the company had higher revenue and more guests than any quarter in its history.Will You Make a Fortune on the Shift to Electric Cars?Here's another stock idea to consider. Much like petroleum 150 years ago, lithium power may soon shake the world, creating millionaires and reshaping geo-politics. Soon electric vehicles (EVs) may be cheaper than gas guzzlers. Some are already reaching 265 miles on a single charge.With battery prices plummeting and charging stations set to multiply, one company stands out as the #1 stock to buy according to Zacks research. It's not the one you think.See This Ticker Free >>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 Hawaiian Holdings, Inc. (HA): Free Stock Analysis Report Wynn Resorts, Limited (WYNN): Free Stock Analysis Report iRobot Corporation (IRBT): Free Stock Analysis Report Texas Instruments Incorporated (TXN): Free Stock Analysis Report To read this article on Zacks.com click here. Zacks Investment Research