Amid market concerns that the IPO (initial public offering) frenzy has peaked, it is reassuring to see three more companies get their flotations off without a hitch. Pipe maker Polypipe (PLP) nudges ahead 0.2% to 245.5p. In the same industry as FTSE 100 constituent Intertek (ITRK), testing group Exova (EXO) dips 0.7% to 200p on its main market debut. The runt of the litter is behavioural health specialist Cambian (CMBN) whose shares fall 8.7% to 205.38p.


Nevertheless, there is some bad IPO-related news. Lombard Medical Technology (LMT:AIM) dives 9% to 195.5p on postponing plans to list on the US NASDAQ exchange due to the recent sell-off in technology stocks in the US.


A solid trading update spelling out continued improvement in orders and better margins lifts power supply kit company XP Power (XPP:AIM) nearly 5% higher to £15.99. The stock has eased back from £17.28 levels since we looked at the company in a web story in January.


Specialist fund Biotech Growth Trust (BIOG) plummets 6.2% to 401.3p while Worldwide Healthcare Trust (WWHS) drops 7.6% to 535p on their exposure to the troubled US biotech market. We'll take a closer look in a web story later today.


Value women's fashion retailer Bonmarche (BON:AIM) bags a 3.5p gain at 290.5p on a positive trading update. Like-for-like sales skipped 13.5% higher in the fourth quarter, taking annual same-store revenues up 10.4%. With a helping hand from rapid online growth, chief executive officer Beth Butterwick says the results will be 'slightly ahead' of expectations.


Fantasy miniatures maker Games Workshop (GAW), whose resilience and cash generative qualities we outline here, gains 8.25p (1.58%) to 530.75p on a terse trading update. Chairman and acting CEO Tom Kirby says trading in the four months to 6 April 'broadly' met expectations, a vague offering which investors read as positive.


Antibody supplier to clinical diagnostic companies Bioventix (BVXO:ISDX) is to move to Aim from ISDX, an exchange for smaller companies, on or around April 29.


New contracts worth £3 million over the next three years boost content management software supplier Publishing Technology (PTO:AIM) 3% higher to 330p. The shares have made little progress so far in 2014, although they did peak to 600p last year.

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Issue Date: 11 Apr 2014