May 12 (Reuters) - Canada's main stock index fell on Wednesday, triggered by fears of interest rate increases and higher bond yields after data showed stronger-than-expected inflation in the United States.
* U.S. consumer prices increased by the most in nearly 12 years in April as booming demand amid a reopening economy pushed against supply constraints, which could fuel financial market fears of a lengthy period of higher inflation. At 9:40 a.m. ET (13:40 GMT), the Toronto Stock Exchange's S&P/TSX composite index .GSPTSE was down 52.47 points, or 0.27%, at 19,221.57.
* Bombardier BBDb.TO said it would extend the time to get bondholders' consent to amend terms on certain bond issues, following claims that the company's recent asset sales breached certain covenants surrounding some of its notes. The energy sector .SPTTEN climbed 1.4% as U.S. crude CLc1 prices were up 0.9% a barrel, while Brent crude LCOc1 added 0.9%. O/R
* The financial sector .SPTTFS gained 0.2%. The industrial sector .GSPTTIN fell 0.8%.
* The materials sector .GSPTTMT , which includes precious and base metals miners and fertilizer companies, lost 0.6% as gold futures GCc1 fell 0.6% to $1,825.2 an ounce. GOL/
* On the TSX, 86 issues were higher, while 137 issues declined for a 1.59-to-1 ratio to the downside, with 19.01 million shares traded.
* The largest percentage gainer on the TSX was Intertape Polymer Group ITP.TO , which jumped 7.4% after its quarterly results beat estimates. Atco Ltd ACOx.TO was the second largest percentage gainer, which rose 4.2% after its partnership with Suncor Energy SU.TO to build a clean hydrogen project. Element Fleet Management EFN.TO fell 7.8%, the most on the TSX, after its first-quarter earnings missed estimates. The second biggest decliner was Hudbay Minerals Inc HBM.TO , down 6.8% after posting a quarterly loss of 23 cents per share. The most heavily traded shares by volume were Enbridge Inc ENB.TO , Tetra Bio-Pharma Ord TBP.TO and Kinross Gold Corp K.TO .
* The TSX posted 5 new 52-week highs and no new lows.
* Across all Canadian issues there were 25 new 52-week highs and 10 new lows, with total volume of 35.68 million shares.