LONDON -- The FTSE 100 (FTSEINDICES:^FTSE) has been gradually gaining strength today and is up 1.1% to 6,418 points as 10 a.m. EST, beating the previous 52-week record of 6,412 set in February. Markets were buoyed by bullish utterings from the economic masters of the U.S. and China, and a raft of upbeat company results added to the FTSE's impetus.

But not every share is storming up -- not even some that are backed by strong earnings. Here are three that are falling behind the index today.

Rotork (LSE:ROR)
Rotork shares slumped have slumped 3.8% to 2,792 pence despite 2012 full-year results coming in pretty much bang on City forecasts. Adjusted pre-tax profit was up 12.2% to 131.6 million pounds, with adjusted earnings per share up 13.6% to 109.3 pence. The industrial engineer's full-year dividend was raised by 15.4% to 43 pence per share.

Despite today's fall, the shares are still up about 35% over the past 12 months, though December 2013 forecasts do put them on a forward price-to-earnings ratio of 23, which some will think too high.

Moneysupermarket.com (LSE:MONY)
Full-year results from Moneysupermarket.com resulted in a small share-price fall of 1.6% to 200 pence -- but the shares are still more than 50% up over the year. Chief executive Peter Plumb told us "The U.K. has caught the money saving bug" after the operator of the U.K.'s biggest price-comparison website saw revenue rise 13% to 204.8 million pounds, with adjusted EBITDA up 26% to 66.5 million pounds.

The full-year dividend was lifted by 27% to 5.74 pence per share, for a yield of 2.9% -- that's not a great yield yet, but it's still early days, and further rises are forecast for the next two years.

Pace (LSE:PIC)
Digital TV technologist Pace is our third to see its share price fall today after the release of good-looking results. In this case, the shares are down a modest 0.5% to 226 pence. But they have seen by far the biggest rise of the year: They're up about 180%, even after recent slips.

The year saw revenue up 4.1% to $2.4 billion, with adjusted EBITA up 11.8% to $158.1 million, even though the firm was hit by last year's global hard-disk supply problems. There will be a full-year dividend of $0.045 per share, up 20% on last year.

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Alan does not own any shares mentioned in this article. The Motley Fool has a disclosure policy. We Fools may not all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. Try any of our Foolish newsletter services free for 30 days.