LONDON -- The FTSE 100 (INDEX: ^FTSE), up 33 points to 5,640 this morning, looks like it's edging closer to its 52-week high of 5,966 points, attained on March 16. And it's far above the 52-week low of 4,944 it hit on Oct. 4, 2011.

But however long it takes the FTSE to reach a new high, it's been high times for shares peaking this week. Here are three constituents of the FTSE indexes managing the feat today.

Anite
Mobile communications software developer Anite (LSE: AIE.L) continued on up this week after releasing good results last week and boosting its dividend, reaching a 52-week high of 133.8 pence.

The shares have had a cracking run, climbing from a 2011 low of 58 pence to more than double in less than six months.

Moneysupermarket.com
Moneysupermarket.com Group
(LSE: MONY.L) has had a great year as well. A strong preclose update suggested that half-year sales will grow by around 15%, with EBITDA leaping by 24%, helping push the shares to a new high of 137.2 pence today.

This is another one that has served investors well, more than doubling in two years with a forecast dividend of 3.7% dividend this year and 4% next.

Shaftesbury
If you're interested in a play on the property market, the Shaftesbury (LSE: SHB.L) Real Estate Investment Trust is doing well, having rebounded strongly from a credit-crunch low of 186 pence to a new 52-week high of 538 pence. It's far ahead of its net asset value per share of around 420 pence (though that is expected to rise nearer to 500 pence this year), largely because it earns money from rental income.

If you want to find other shares that have a good chance of reaching new highs over the long term, the free report "Top Sectors for 2012," put together by The Motley Fool's top analysts, should give you some ideas of where to look.

Are you looking to profit as a long-term investor? " 10 Steps To Making A Million In The Market " is the latest Motley Fool guide to help Britain invest. Better. We urge you to read the report today -- while it's still free and available.

Further Motley Fool investment opportunities: