LONDON -- The FTSE 100 (INDEX: ^FTSE) hit an intraday high of 6,352 points today but ended up giving back those gains to land at 6,328 -- less than a point above where it started the day. But at least the index of top U.K. managed to end the week above the 6,300 level.

But which shares are helping keep the various indexes up? Here are three that are reaching new records today.

Aberdeen Asset Management (ADN)
Aberdeen Asset Management hit yet another new 52-week high today as shares in the FTSE 100 investment manager touched 434 pence in early trading, though the price finished at 428 pence, up 0.4% for the day. That takes the shares up about 63% over the past 12 months, with the price having three-bagged in three years.

Forecasts for the year to September 2013 suggest a rise in earnings of 7%, putting the shares on a forward price-to-earnings ratio of 16, and there's a 3.3% dividend yield expected.

Galliford Try (GFRD -0.82%)
Shares in Galliford Try reached a new high of 894 pence this morning before dropping back to finish the day at 890.5 pence. The price is up 75% over the past 12 months after the homebuilder delivered a 90% rise in earnings per share last year. There's a more modest 14% rise forecast for the year to June 2013, and there's a considerable 4.2% dividend yield looking likely.

And last month's trading update told us that half-year profit should be ahead of the company's previous expectations, with revenue and operating margin expected to be up on last year.

Trinity Mirror (LSE: TNI)
Trinity Mirror has shown us a pretty amazing recovery over the past 12 months, with the shares hitting a new 52-week record of 116 pence today before dropping back to finish at 114.5. The price has more than quadrupled in a little more than six months from a low of just 24 pence.

In October's interim update, the company told us that improving advertising revenue and tight cost-management have given it the confidence to expect adjusted operating profit for the full year to be broadly in line with 2011's 104.5 million pounds. Results should be released on March 14.

If you're looking for potential growth shares, identifying the best prospects can be a tricky task that's not without its risks -- so we should welcome all the help we can get. With that in mind, I recommend you get yourself a copy of our brand-new report "The Motley Fool's Top Growth Share For 2013," which is the result of some serious brain-work by the Fool's top analysts. It's completely free of charge, but it will be available for a limited period only. So click here to get your copy today.