Wall Street watches a company's quarterly report closely to understand as much as possible about its recent performance and what to expect going forward. Of course, one figure often stands out among the rest: earnings.

Life and the stock market are both about expectations, and rising above what is expected is often rewarded, while falling short can come with negative consequences. Investors might want to try to capture stronger returns by finding positive earnings surprises.

Hunting for 'earnings whispers' or companies poised to beat their quarterly earnings estimates is a somewhat common practice. But that doesn't make it easy. One way that has been proven to work is by using the Zacks Earnings ESP tool.

The Zacks Earnings ESP, Explained

The Zacks Expected Surprise Prediction, or ESP, works by locking in on the most up-to-date analyst earnings revisions because they can be more accurate than estimates from weeks or even months before the actual release date. The thinking is pretty straightforward: analysts who provide earnings estimates closer to the report are likely to have more information.

The core of the ESP model is comparing the Most Accurate Estimate to the Zacks Consensus Estimate, where the resulting percentage difference between the two equals the Expected Surprise Prediction. The Zacks Rank is also factored into the ESP metric to better help find companies that appear poised to top their next bottom-line consensus estimate, which will hopefully help lift the stock price.

In fact, when we combined a Zacks Rank #3 (Hold) or better and a positive Earnings ESP, stocks produced a positive surprise 70% of the time. Perhaps most importantly, using these parameters has helped produce 28.3% annual returns on average, according to our 10 year backtest.

Stocks with a #3 (Hold) ranking, which is most stocks covered at 60%, are expected to perform in-line with the broader market. But stocks that fall into the #2 (Buy) and #1 (Strong Buy) ranking, or the top 15% and top 5% of stocks, respectively, should outperform the market. Strong Buy stocks should outperform more than any other rank.

Should You Consider PPL?

The final step today is to look at a stock that meets our ESP qualifications. PPL (PPL Quick QuotePPL - Free Report) earns a #3 (Hold) 29 days from its next quarterly earnings release on August 1, 2025, and its Most Accurate Estimate comes in at $0.40 a share.

PPL has an Earnings ESP figure of +1.28%, which, as explained above, is calculated by taking the percentage difference between the $0.40 Most Accurate Estimate and the Zacks Consensus Estimate of $0.39. PPL is one of a large database of stocks with positive ESPs. Make sure to utilize our Earnings ESP Filter to uncover the best stocks to buy or sell before they've reported.

PPL is one of just a large database of Utilities stocks with positive ESPs. Another solid-looking stock is Duke Energy (DUK Quick QuoteDUK - Free Report) .

Duke Energy is a Zacks Rank #3 (Hold) stock, and is getting ready to report earnings on August 5, 2025. DUK's Most Accurate Estimate sits at $1.32 a share 33 days from its next earnings release.

The Zacks Consensus Estimate for Duke Energy is $1.29, and when you take the percentage difference between that number and its Most Accurate Estimate, you get the Earnings ESP figure of +2.13%.

Because both stocks hold a positive Earnings ESP, PPL and DUK could potentially post earnings beats in their next reports.

Find Stocks to Buy or Sell Before They're Reported

Use the Zacks Earnings ESP Filter to turn up stocks with the highest probability of positively, or negatively, surprising to buy or sell before they're reported for profitable earnings season trading. Check it out here >>